feat: new interval trigger

app.go

@@ -42,16 +42,16 @@ type App struct {
 
 type Item types.Item
 
-func (mi Item) Compare(other queue.Item) int {
-	if mi.Priority > other.(Item).Priority {
+func (i Item) Compare(other queue.Item) int {
+	if i.Priority > other.(Item).Priority {
 		return 1
-	} else if mi.Priority == other.(Item).Priority {
+	} else if i.Priority == other.(Item).Priority {
 		return 0
 	}
 	return -1
 }
 
-// validateHomeZone verifies that the home zone entity exists and has latitude/longitude
+// validateHomeZone verifies that the home zone entity exists and has latitude/longitude.
 func validateHomeZone(state State, entityID string) error {
 	entity, err := state.Get(entityID)
 	if err != nil {
@@ -75,10 +75,7 @@ func validateHomeZone(state State, entityID string) error {
 	return nil
 }
 
-/*
-NewApp establishes the websocket connection and returns an object
-you can use to register schedules and listeners.
-*/
+// NewApp establishes the WebSocket connection and returns an object you can use to register schedules and listeners.
 func NewApp(request types.NewAppRequest) (*App, error) {
 	if (request.URL == "" && request.IpAddress == "") || request.HAAuthToken == "" {
 		slog.Error("URL and HAAuthToken are required arguments in NewAppRequest")
@@ -138,11 +135,9 @@ func (app *App) Cleanup() {
 	}
 }
 
-// Close performs a clean shutdown of the application.
-// It cancels the context, closes the websocket connection,
-// and ensures all background processes are properly terminated.
+// Close performs a clean shutdown of the application. It cancels the context, closes the WebSocket connection, and ensures all background processes are properly terminated.
 func (app *App) Close() error {
-	// Close websocket connection if it exists
+	// Close WebSocket connection if it exists
 	if app.conn != nil {
 		deadline := time.Now().Add(10 * time.Second)
 		err := app.conn.Conn.WriteControl(websocket.CloseMessage, websocket.FormatCloseMessage(websocket.CloseNormalClosure, ""), deadline)
@@ -151,15 +146,15 @@ func (app *App) Close() error {
 			return err
 		}
 
-		// Close the websocket connection
+		// Close the WebSocket connection
 		err = app.conn.Conn.Close()
 		if err != nil {
-			slog.Warn("Error closing websocket connection", "error", err)
+			slog.Warn("Error closing WebSocket connection", "error", err)
 			return err
 		}
 	}
 
-	// Wait a short time for the websocket connection to close
+	// Wait a short time for the WebSocket connection to close
 	time.Sleep(500 * time.Millisecond)
 
 	// Cancel context to signal all goroutines to stop
@@ -338,7 +333,7 @@ func (app *App) Start() {
 		select {
 		case msg, ok := <-elChan:
 			if !ok {
-				slog.Info("Websocket channel closed, stopping main loop")
+				slog.Info("WebSocket channel closed, stopping main loop")
 				return
 			}
 			if app.entityListenersId == msg.Id {

app_test.go

@@ -133,11 +133,11 @@ func TestAppWithNilFields(t *testing.T) {
 }
 
 func TestAppWithWebsocketConnection(t *testing.T) {
-	// Test app with websocket connection (mocked)
+	// Test app with WebSocket connection (mocked)
 	app := &App{
 		ctx:       context.Background(),
 		ctxCancel: func() {},
-		conn:      nil, // In real test, this would be a mock websocket
+		conn:      nil, // In real test, this would be a mock WebSocket
 	}
 
 	// Test that Close() handles nil connection gracefully

cmd/generate/main.go

@@ -67,7 +67,7 @@ func toCamelCase(s string) string {
 	return result.String()
 }
 
-// validateHomeZone verifies that the home zone entity exists and is valid
+// validateHomeZone verifies that the home zone entity exists and is valid.
 func validateHomeZone(state ha.State, entityID string) error {
 	entity, err := state.Get(entityID)
 	if err != nil {
@@ -93,7 +93,7 @@ func validateHomeZone(state ha.State, entityID string) error {
 	return nil
 }
 
-// generate creates the entities.go file with constants for all Home Assistant entities
+// generate creates the entities.go file with constants for all Home Assistant entities.
 func generate(config Config) error {
 	if config.HomeZoneEntityId == "" {
 		config.HomeZoneEntityId = "zone.home"

entity_listener.go

@@ -67,8 +67,6 @@ type msgState struct {
 	Attributes  map[string]any `json:"attributes"`
 }
 
-/* Methods */
-
 func NewEntityListener() elBuilder1 {
 	return elBuilder1{EntityListener{
 		lastRan: carbon.Now().StartOfCentury(),
@@ -154,10 +152,8 @@ func (b elBuilder3) RunOnStartup() elBuilder3 {
 	return b
 }
 
-/*
-Enable this listener only when the current state of {entityId} matches {state}.
-If there is a network error while retrieving state, the listener runs if {runOnNetworkError} is true.
-*/
+// EnabledWhen enables this listener only when the current state of {entityId} matches {state}.
+// If there is a network error while retrieving state, the listener runs if {runOnNetworkError} is true.
 func (b elBuilder3) EnabledWhen(entityId, state string, runOnNetworkError bool) elBuilder3 {
 	if entityId == "" {
 		panic(fmt.Sprintf("entityId is empty in EnabledWhen entityId='%s' state='%s'", entityId, state))
@@ -171,10 +167,8 @@ func (b elBuilder3) EnabledWhen(entityId, state string, runOnNetworkError bool)
 	return b
 }
 
-/*
-Disable this listener when the current state of {entityId} matches {state}.
-If there is a network error while retrieving state, the listener runs if {runOnNetworkError} is true.
-*/
+// DisabledWhen disables this listener when the current state of {entityId} matches {state}.
+// If there is a network error while retrieving state, the listener runs if {runOnNetworkError} is true.
 func (b elBuilder3) DisabledWhen(entityId, state string, runOnNetworkError bool) elBuilder3 {
 	if entityId == "" {
 		panic(fmt.Sprintf("entityId is empty in EnabledWhen entityId='%s' state='%s'", entityId, state))

event_listener.go

@@ -34,8 +34,6 @@ type EventData struct {
 	RawEventJSON []byte
 }
 
-/* Methods */
-
 func NewEventListener() eventListenerBuilder1 {
 	return eventListenerBuilder1{EventListener{
 		lastRan: carbon.Now().StartOfCentury(),
@@ -96,10 +94,8 @@ func (b eventListenerBuilder3) ExceptionRange(start, end time.Time) eventListene
 	return b
 }
 
-/*
-Enable this listener only when the current state of {entityId} matches {state}.
-If there is a network error while retrieving state, the listener runs if {runOnNetworkError} is true.
-*/
+// EnabledWhen enables this listener only when the current state of {entityId} matches {state}.
+// If there is a network error while retrieving state, the listener runs if {runOnNetworkError} is true.
 func (b eventListenerBuilder3) EnabledWhen(entityId, state string, runOnNetworkError bool) eventListenerBuilder3 {
 	if entityId == "" {
 		panic(fmt.Sprintf("entityId is empty in eventListener EnabledWhen entityId='%s' state='%s' runOnNetworkError='%t'", entityId, state, runOnNetworkError))
@@ -113,10 +109,8 @@ func (b eventListenerBuilder3) EnabledWhen(entityId, state string, runOnNetworkE
 	return b
 }
 
-/*
-Disable this listener when the current state of {entityId} matches {state}.
-If there is a network error while retrieving state, the listener runs if {runOnNetworkError} is true.
-*/
+// DisabledWhen disables this listener when the current state of {entityId} matches {state}.
+// If there is a network error while retrieving state, the listener runs if {runOnNetworkError} is true.
 func (b eventListenerBuilder3) DisabledWhen(entityId, state string, runOnNetworkError bool) eventListenerBuilder3 {
 	if entityId == "" {
 		panic(fmt.Sprintf("entityId is empty in eventListener EnabledWhen entityId='%s' state='%s' runOnNetworkError='%t'", entityId, state, runOnNetworkError))
@@ -140,7 +134,6 @@ type BaseEventMsg struct {
 	} `json:"event"`
 }
 
-/* Functions */
 func callEventListeners(app *App, msg connect.ChannelMessage) {
 	baseEventMsg := BaseEventMsg{}
 	_ = json.Unmarshal(msg.Raw, &baseEventMsg)

go.mod

@@ -18,6 +18,7 @@ require (
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/kr/pretty v0.1.0 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
+	github.com/robfig/cron/v3 v3.0.0 // indirect
 	golang.org/x/net v0.42.0 // indirect
 	gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 // indirect
 )

go.sum

@@ -17,6 +17,8 @@ github.com/nathan-osman/go-sunrise v1.1.0/go.mod h1:RcWqhT+5ShCZDev79GuWLayetpJp
 github.com/philhofer/fwd v1.1.1/go.mod h1:gk3iGcWd9+svBvR0sR+KPcfE+RNWozjowpeBVG3ZVNU=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/robfig/cron/v3 v3.0.0 h1:kQ6Cb7aHOHTSzNVNEhmp8EcWKLb4CbiMW9h9VyIhO4E=
+github.com/robfig/cron/v3 v3.0.0/go.mod h1:eQICP3HwyT7UooqI/z+Ov+PtYAWygg1TEWWzGIFLtro=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
 github.com/stretchr/testify v1.10.0 h1:Xv5erBjTwe/5IxqUQTdXv5kgmIvbHo3QQyRwhJsOfJA=

internal/connect/connection.go

@@ -1,7 +1,3 @@
-// Package websocket is used to interact with the Home Assistant
-// websocket API. All HA interaction is done via websocket
-// except for cases explicitly called out in http package
-// documentation.
 package connect
 
 import (
@@ -20,13 +16,13 @@ import (
 
 var ErrInvalidToken = errors.New("invalid authentication token")
 
-// HAConnection is a wrapper around a websocket connection that provides a mutex for thread safety.
+// HAConnection is a wrapper around a WebSocket connection that provides a mutex for thread safety.
 type HAConnection struct {
 	Conn  *websocket.Conn // Note: this is not thread safe except for Close() and WriteControl()
 	mutex sync.Mutex
 }
 
-// WriteMessage writes a message to the websocket connection.
+// WriteMessage writes a message to the WebSocket connection.
 func (w *HAConnection) WriteMessage(msg any) error {
 	w.mutex.Lock()
 	defer w.mutex.Unlock()
@@ -34,7 +30,7 @@ func (w *HAConnection) WriteMessage(msg any) error {
 	return w.Conn.WriteJSON(msg)
 }
 
-// ReadMessageRaw reads a raw message from the websocket connection.
+// ReadMessageRaw reads a raw message from the WebSocket connection.
 func ReadMessageRaw(conn *websocket.Conn) ([]byte, error) {
 	_, msg, err := conn.ReadMessage()
 	if err != nil {
@@ -43,7 +39,7 @@ func ReadMessageRaw(conn *websocket.Conn) ([]byte, error) {
 	return msg, nil
 }
 
-// ReadMessage reads a message from the websocket connection and unmarshals it into the given type.
+// ReadMessage reads a message from the WebSocket connection and unmarshals it into the given type.
 func ReadMessage[T any](conn *websocket.Conn) (T, error) {
 	var result T
 	_, msg, err := conn.ReadMessage()
@@ -59,14 +55,14 @@ func ReadMessage[T any](conn *websocket.Conn) (T, error) {
 	return result, nil
 }
 
-// ConnectionFromUri creates a new websocket connection from the given base URL and authentication token.
+// ConnectionFromUri creates a new WebSocket connection from the given base URL and authentication token.
 func ConnectionFromUri(baseUrl *url.URL, token string) (*HAConnection, context.Context, context.CancelFunc, error) {
-	// Build the websocket URL
+	// Build the WebSocket URL
 	urlWebsockets := *baseUrl
 	urlWebsockets.Path = "/api/websocket"
 	scheme, err := internal.GetEquivalentWebsocketScheme(baseUrl.Scheme)
 	if err != nil {
-		return nil, nil, nil, fmt.Errorf("failed to build websocket URL: %w", err)
+		return nil, nil, nil, fmt.Errorf("failed to build WebSocket URL: %w", err)
 	}
 	urlWebsockets.Scheme = scheme
 
@@ -74,11 +70,11 @@ func ConnectionFromUri(baseUrl *url.URL, token string) (*HAConnection, context.C
 	connCtx, connCtxCancel := context.WithTimeout(context.Background(), time.Second*3)
 	defer connCtxCancel() // Always cancel the connection context when we're done
 
-	// Init websocket connection
+	// Init WebSocket connection
 	dialer := websocket.DefaultDialer
 	conn, _, err := dialer.DialContext(connCtx, urlWebsockets.String(), nil)
 	if err != nil {
-		slog.Error("Failed to connect to websocket. Check URI\n", "url", urlWebsockets)
+		slog.Error("Failed to connect to WebSocket. Check URI\n", "url", urlWebsockets)
 		return nil, nil, nil, err
 	}
 
@@ -87,7 +83,7 @@ func ConnectionFromUri(baseUrl *url.URL, token string) (*HAConnection, context.C
 		MsgType string `json:"type"`
 	}](conn)
 	if err != nil {
-		slog.Error("Unknown error creating websocket client\n")
+		slog.Error("Unknown error creating WebSocket client\n")
 		return nil, nil, nil, err
 	} else if msg.MsgType != "auth_required" {
 		slog.Error("Expected auth_required message, got", "msgType", msg.MsgType)
@@ -97,7 +93,7 @@ func ConnectionFromUri(baseUrl *url.URL, token string) (*HAConnection, context.C
 	// Send auth message
 	err = SendAuthMessage(conn, connCtx, token)
 	if err != nil {
-		slog.Error("Unknown error creating websocket client\n")
+		slog.Error("Unknown error creating WebSocket client\n")
 		return nil, nil, nil, err
 	}
 
@@ -114,7 +110,7 @@ func ConnectionFromUri(baseUrl *url.URL, token string) (*HAConnection, context.C
 	return &HAConnection{Conn: conn}, appCtx, appCtxCancel, nil
 }
 
-// SendAuthMessage sends an auth message to the websocket connection.
+// SendAuthMessage sends an auth message to the WebSocket connection.
 func SendAuthMessage(conn *websocket.Conn, ctx context.Context, token string) error {
 	type AuthMessage struct {
 		MsgType     string `json:"type"`
@@ -174,7 +170,7 @@ func SubscribeToEventType(eventType string, conn *HAConnection, ctx context.Cont
 	err := conn.WriteMessage(e)
 	// TODO: Handle errors better
 	if err != nil {
-		wrappedErr := fmt.Errorf("error writing to websocket: %w", err)
+		wrappedErr := fmt.Errorf("error writing to WebSocket: %w", err)
 		slog.Error(wrappedErr.Error())
 		panic(wrappedErr)
 	}

internal/connect/listen.go

@@ -7,7 +7,7 @@ import (
 	"github.com/gorilla/websocket"
 )
 
-// BaseMessage is the base message type for all messages sent by the websocket server.
+// BaseMessage is the base message type for all messages sent by the WebSocket server.
 type BaseMessage struct {
 	Type    string `json:"type"`
 	Id      int64  `json:"id"`
@@ -21,14 +21,14 @@ type ChannelMessage struct {
 	Raw     []byte
 }
 
-// ListenWebsocket reads messages from the websocket connection and sends them to the channel.
+// ListenWebsocket reads messages from the WebSocket connection and sends them to the channel.
 // It will close the channel if it encounters an error, or if the channel is full, and return.
 // It ignores errors in deserialization.
 func ListenWebsocket(conn *websocket.Conn, c chan ChannelMessage) {
 	for {
 		raw, err := ReadMessageRaw(conn)
 		if err != nil {
-			slog.Error("Error reading from websocket", "err", err)
+			slog.Error("Error reading from WebSocket", "err", err)
 			close(c)
 			break
 		}
@@ -60,7 +60,7 @@ func ListenWebsocket(conn *websocket.Conn, c chan ChannelMessage) {
 			// Message sent successfully
 		default:
 			// Channel is full or closed, break out of loop
-			slog.Warn("Websocket message channel is full or closed, stopping listener",
+			slog.Warn("WebSocket message channel is full or closed, stopping listener",
 				"channel_capacity", cap(c),
 				"channel_length", len(c))
 			close(c)

internal/http.go

@@ -1,6 +1,3 @@
-// http is used to interact with the home assistant
-// REST API. Currently only used to retrieve state for
-// a single entity_id
 package internal
 
 import (
@@ -44,7 +41,7 @@ func NewHttpClient(ctx context.Context, baseUrl *url.URL, token string) *HttpCli
 	}
 }
 
-// getRequest returns a new request
+// getRequest returns a new request.
 func (c *HttpClient) getRequest() *resty.Request {
 	return c.baseRequest.Clone(c.client.Context())
 }

internal/misc.go

@@ -21,8 +21,7 @@ var (
 	id atomic.Int64 // default value is 0
 )
 
-// NextId returns a unique integer (for the given process), often used for providing a uniquely identifiable
-// id for a request. This function is thread-safe.
+// NextId returns a unique integer (for the given process), often used for providing a uniquely identifiable ID for a request. This function is thread-safe.
 func NextId() int64 {
 	return id.Add(1)
 }
@@ -32,7 +31,7 @@ func GetFunctionName(i interface{}) string {
 	return runtime.FuncForPC(reflect.ValueOf(i).Pointer()).Name()
 }
 
-// GetEquivalentWebsocketScheme returns the equivalent websocket scheme for the given scheme.
+// GetEquivalentWebsocketScheme returns the equivalent WebSocket scheme for the given scheme.
 // If the scheme is http or https, it returns ws or wss respectively.
 // If the scheme is ws or wss, it returns the same scheme.
 // If the scheme is not any of the above, it returns an error.
@@ -48,3 +47,7 @@ func GetEquivalentWebsocketScheme(scheme string) (string, error) {
 		return "", fmt.Errorf("unexpected scheme: %s", scheme)
 	}
 }
+
+func Ptr[T any](v T) *T {
+	return &v
+}

internal/parse.go

@@ -8,11 +8,11 @@ import (
 	"github.com/dromara/carbon/v2"
 )
 
-// Parses a HH:MM string.
+// ParseTime parses a HH:MM string.
 func ParseTime(s string) *carbon.Carbon {
 	t, err := time.Parse("15:04", s)
 	if err != nil {
-		parsingErr := fmt.Errorf("failed to parse time string \"%s\"; format must be HH:MM.: %w", s, err)
+		parsingErr := fmt.Errorf("failed to parse time string \"%s\"; format must be HH:MM: %w", s, err)
 		slog.Error(parsingErr.Error())
 		panic(parsingErr)
 	}
@@ -22,7 +22,7 @@ func ParseTime(s string) *carbon.Carbon {
 func ParseDuration(s string) time.Duration {
 	d, err := time.ParseDuration(s)
 	if err != nil {
-		parsingErr := fmt.Errorf("couldn't parse string duration: \"%s\" see https://pkg.go.dev/time#ParseDuration for valid time units: %w", s, err)
+		parsingErr := fmt.Errorf("couldn't parse string duration: \"%s\"; see https://pkg.go.dev/time#ParseDuration for valid time units: %w", s, err)
 		slog.Error(parsingErr.Error())
 		panic(parsingErr)
 	}

internal/scheduling/builder.go

@@ -0,0 +1,114 @@
+package scheduling
+
+import (
+	"fmt"
+	"time"
+
+	"github.com/Xevion/go-ha/types"
+)
+
+type DailyScheduleBuilder struct {
+	errors   []error
+	hashes   map[uint64]bool
+	triggers []Trigger
+}
+
+func NewSchedule() *DailyScheduleBuilder {
+	return &DailyScheduleBuilder{
+		hashes: make(map[uint64]bool),
+	}
+}
+
+// tryAddTrigger adds a trigger to the builder if it is not already present.
+// If the trigger is already present, an error will be added to the builder's errors.
+// It will return the builder for chaining.
+func (b *DailyScheduleBuilder) tryAddTrigger(trigger Trigger) *DailyScheduleBuilder {
+	hash := trigger.Hash()
+	if _, ok := b.hashes[hash]; ok {
+		b.errors = append(b.errors, fmt.Errorf("duplicate trigger: %v", trigger))
+		return b
+	}
+
+	b.triggers = append(b.triggers, trigger)
+	b.hashes[hash] = true
+
+	return b
+}
+
+func (b *DailyScheduleBuilder) onSun(sunset bool, offset ...types.DurationString) *DailyScheduleBuilder {
+	if len(offset) == 0 {
+		b.errors = append(b.errors, fmt.Errorf("no offset provided for sun"))
+		return b
+	}
+
+	offsetDuration, err := time.ParseDuration(string(offset[0]))
+	if err != nil {
+		b.errors = append(b.errors, err)
+		return b
+	}
+
+	return b.tryAddTrigger(&SunTrigger{
+		sunset: sunset,
+		offset: &offsetDuration,
+	})
+}
+
+// OnSunrise adds a trigger for sunrise with an optional offset.
+// Only the first offset is considered.
+// You can call this multiple times to add multiple triggers for sunrise with different offsets.
+func (b *DailyScheduleBuilder) OnSunrise(offset ...types.DurationString) *DailyScheduleBuilder {
+	return b.onSun(false, offset...)
+}
+
+// OnSunset adds a trigger for sunset with an optional offset.
+// Only the first offset is considered.
+func (b *DailyScheduleBuilder) OnSunset(offset ...types.DurationString) *DailyScheduleBuilder {
+	return b.onSun(true, offset...)
+}
+
+// OnFixedTime adds a trigger for a fixed time each day.
+// The time is in the local timezone.
+// This will error if the integer values are not in the range 0-23 for the hour and 0-59 for the minute.
+func (b *DailyScheduleBuilder) OnFixedTime(hour, minute int) *DailyScheduleBuilder {
+	errored := false
+	if hour < 0 || hour > 23 {
+		b.errors = append(b.errors, fmt.Errorf("hour must be between 0 and 23"))
+		errored = true
+	}
+
+	if minute < 0 || minute > 59 {
+		b.errors = append(b.errors, fmt.Errorf("minute must be between 0 and 59"))
+		errored = true
+	}
+
+	if errored {
+		return b
+	}
+
+	return b.tryAddTrigger(&FixedTimeTrigger{
+		Hour:   hour,
+		Minute: minute,
+	})
+}
+
+// Build returns a Trigger that will trigger at the configured times.
+// It will return an error if any errors occurred during configuration.
+func (b *DailyScheduleBuilder) Build() (Trigger, error) {
+	// If there are no triggers, add an error.
+	if len(b.triggers) == 0 {
+		b.errors = append(b.errors, fmt.Errorf("no triggers provided"))
+	}
+
+	// If there are errors, return an error.
+	if len(b.errors) > 0 {
+		return nil, fmt.Errorf("errors occurred: %v", b.errors)
+	}
+
+	// If there is only one trigger, return it.
+	if len(b.triggers) == 1 {
+		return b.triggers[0], nil
+	}
+
+	// Otherwise, return a composite schedule that combines all the triggers.
+	return &CompositeDailySchedule{triggers: b.triggers}, nil
+}

internal/scheduling/builder_test.go

@@ -0,0 +1,353 @@
+package scheduling
+
+import (
+	"fmt"
+	"testing"
+	"time"
+
+	"github.com/Xevion/go-ha/types"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestNewSchedule(t *testing.T) {
+	builder := NewSchedule()
+	assert.NotNil(t, builder)
+	assert.Empty(t, builder.errors)
+	assert.Empty(t, builder.triggers)
+	assert.NotNil(t, builder.hashes)
+}
+
+func TestDailyScheduleBuilder_OnFixedTime(t *testing.T) {
+	tests := []struct {
+		name        string
+		hour        int
+		minute      int
+		expectError bool
+	}{
+		{
+			name:        "valid time",
+			hour:        12,
+			minute:      30,
+			expectError: false,
+		},
+		{
+			name:        "midnight",
+			hour:        0,
+			minute:      0,
+			expectError: false,
+		},
+		{
+			name:        "invalid hour negative",
+			hour:        -1,
+			minute:      30,
+			expectError: true,
+		},
+		{
+			name:        "invalid hour too high",
+			hour:        24,
+			minute:      30,
+			expectError: true,
+		},
+		{
+			name:        "invalid minute negative",
+			hour:        12,
+			minute:      -1,
+			expectError: true,
+		},
+		{
+			name:        "invalid minute too high",
+			hour:        12,
+			minute:      60,
+			expectError: true,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			builder := NewSchedule()
+			result := builder.OnFixedTime(tt.hour, tt.minute)
+
+			assert.Equal(t, builder, result) // Should return self for chaining
+
+			if tt.expectError {
+				assert.Len(t, builder.errors, 1)
+			} else {
+				assert.Empty(t, builder.errors)
+				assert.Len(t, builder.triggers, 1)
+			}
+		})
+	}
+}
+
+func TestDailyScheduleBuilder_OnSunrise(t *testing.T) {
+	tests := []struct {
+		name        string
+		offset      []types.DurationString
+		expectError bool
+	}{
+		{
+			name:        "with offset",
+			offset:      []types.DurationString{"30m"},
+			expectError: false,
+		},
+		{
+			name:        "with negative offset",
+			offset:      []types.DurationString{"-1h"},
+			expectError: false,
+		},
+		{
+			name:        "no offset",
+			offset:      []types.DurationString{},
+			expectError: true,
+		},
+		{
+			name:        "invalid duration",
+			offset:      []types.DurationString{"invalid"},
+			expectError: true,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			builder := NewSchedule()
+			result := builder.OnSunrise(tt.offset...)
+
+			assert.Equal(t, builder, result) // Should return self for chaining
+
+			if tt.expectError {
+				assert.Len(t, builder.errors, 1)
+			} else {
+				assert.Empty(t, builder.errors)
+				assert.Len(t, builder.triggers, 1)
+			}
+		})
+	}
+}
+
+func TestDailyScheduleBuilder_OnSunset(t *testing.T) {
+	tests := []struct {
+		name        string
+		offset      []types.DurationString
+		expectError bool
+	}{
+		{
+			name:        "with offset",
+			offset:      []types.DurationString{"1h"},
+			expectError: false,
+		},
+		{
+			name:        "with negative offset",
+			offset:      []types.DurationString{"-30m"},
+			expectError: false,
+		},
+		{
+			name:        "no offset",
+			offset:      []types.DurationString{},
+			expectError: true,
+		},
+		{
+			name:        "invalid duration",
+			offset:      []types.DurationString{"invalid"},
+			expectError: true,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			builder := NewSchedule()
+			result := builder.OnSunset(tt.offset...)
+
+			assert.Equal(t, builder, result) // Should return self for chaining
+
+			if tt.expectError {
+				assert.Len(t, builder.errors, 1)
+			} else {
+				assert.Empty(t, builder.errors)
+				assert.Len(t, builder.triggers, 1)
+			}
+		})
+	}
+}
+
+func TestDailyScheduleBuilder_DuplicateTriggers(t *testing.T) {
+	builder := NewSchedule()
+
+	// Add the same fixed time trigger twice
+	builder.OnFixedTime(12, 30)
+	builder.OnFixedTime(12, 30)
+
+	assert.Len(t, builder.errors, 1)
+	assert.Len(t, builder.triggers, 1) // Only one should be added
+	assert.Contains(t, builder.errors[0].Error(), "duplicate trigger")
+}
+
+func TestDailyScheduleBuilder_Build_Success(t *testing.T) {
+	tests := []struct {
+		name          string
+		setupBuilder  func(*DailyScheduleBuilder)
+		expectedType  string
+		expectedCount int
+	}{
+		{
+			name: "single fixed time trigger",
+			setupBuilder: func(b *DailyScheduleBuilder) {
+				b.OnFixedTime(12, 30)
+			},
+			expectedType:  "*scheduling.FixedTimeTrigger",
+			expectedCount: 1,
+		},
+		{
+			name: "single sunrise trigger",
+			setupBuilder: func(b *DailyScheduleBuilder) {
+				b.OnSunrise("30m")
+			},
+			expectedType:  "*scheduling.SunTrigger",
+			expectedCount: 1,
+		},
+		{
+			name: "multiple triggers",
+			setupBuilder: func(b *DailyScheduleBuilder) {
+				b.OnFixedTime(8, 0)
+				b.OnFixedTime(12, 0)
+				b.OnSunrise("1h")
+			},
+			expectedType:  "*scheduling.CompositeDailySchedule",
+			expectedCount: 3,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			builder := NewSchedule()
+			tt.setupBuilder(builder)
+
+			trigger, err := builder.Build()
+
+			require.NoError(t, err)
+			require.NotNil(t, trigger)
+			assert.Equal(t, tt.expectedType, fmt.Sprintf("%T", trigger))
+
+			// Test that the trigger works
+			now := time.Date(2025, 8, 2, 10, 0, 0, 0, time.Local)
+			result := trigger.NextTime(now)
+			assert.NotNil(t, result)
+		})
+	}
+}
+
+func TestDailyScheduleBuilder_Build_Errors(t *testing.T) {
+	tests := []struct {
+		name         string
+		setupBuilder func(*DailyScheduleBuilder)
+		expectError  bool
+	}{
+		{
+			name: "no triggers",
+			setupBuilder: func(b *DailyScheduleBuilder) {
+				// Don't add any triggers
+			},
+			expectError: true,
+		},
+		{
+			name: "invalid hour",
+			setupBuilder: func(b *DailyScheduleBuilder) {
+				b.OnFixedTime(25, 0) // Invalid hour
+			},
+			expectError: true,
+		},
+		{
+			name: "invalid minute",
+			setupBuilder: func(b *DailyScheduleBuilder) {
+				b.OnFixedTime(12, 60) // Invalid minute
+			},
+			expectError: true,
+		},
+		{
+			name: "no offset for sun trigger",
+			setupBuilder: func(b *DailyScheduleBuilder) {
+				b.OnSunrise() // No offset
+			},
+			expectError: true,
+		},
+		{
+			name: "invalid duration",
+			setupBuilder: func(b *DailyScheduleBuilder) {
+				b.OnSunset("invalid") // Invalid duration
+			},
+			expectError: true,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			builder := NewSchedule()
+			tt.setupBuilder(builder)
+
+			trigger, err := builder.Build()
+
+			if tt.expectError {
+				assert.Error(t, err)
+				assert.Nil(t, trigger)
+			} else {
+				assert.NoError(t, err)
+				assert.NotNil(t, trigger)
+			}
+		})
+	}
+}
+
+func TestDailyScheduleBuilder_Chaining(t *testing.T) {
+	builder := NewSchedule()
+
+	// Test method chaining
+	result := builder.
+		OnFixedTime(8, 0).
+		OnFixedTime(12, 0).
+		OnSunrise("30m")
+
+	assert.Equal(t, builder, result)
+	assert.Len(t, builder.triggers, 3)
+	assert.Empty(t, builder.errors)
+}
+
+func TestDailyScheduleBuilder_NextTime_Integration(t *testing.T) {
+	builder := NewSchedule()
+	builder.OnFixedTime(8, 0).
+		OnFixedTime(12, 0).
+		OnFixedTime(18, 0)
+
+	trigger, err := builder.Build()
+	require.NoError(t, err)
+
+	// Test at different times
+	tests := []struct {
+		name     string
+		now      time.Time
+		expected time.Time
+	}{
+		{
+			name:     "before all triggers",
+			now:      time.Date(2025, 8, 2, 6, 0, 0, 0, time.Local),
+			expected: time.Date(2025, 8, 2, 8, 0, 0, 0, time.Local),
+		},
+		{
+			name:     "between triggers",
+			now:      time.Date(2025, 8, 2, 10, 0, 0, 0, time.Local),
+			expected: time.Date(2025, 8, 2, 12, 0, 0, 0, time.Local),
+		},
+		{
+			name:     "after all triggers",
+			now:      time.Date(2025, 8, 2, 20, 0, 0, 0, time.Local),
+			expected: time.Date(2025, 8, 3, 8, 0, 0, 0, time.Local),
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			result := trigger.NextTime(tt.now)
+			require.NotNil(t, result)
+			assert.Equal(t, tt.expected, *result)
+		})
+	}
+}

internal/scheduling/cron.go

@@ -0,0 +1,43 @@
+package scheduling
+
+import (
+	"fmt"
+	"hash/fnv"
+	"time"
+
+	"github.com/robfig/cron/v3"
+)
+
+// CronTrigger represents a trigger based on a cron expression.
+type CronTrigger struct {
+	expression string // required for hash
+	schedule   cron.Schedule
+}
+
+// NewCronTrigger creates a new CronTrigger from a cron expression.
+func NewCronTrigger(expression string) (*CronTrigger, error) {
+	// Use the standard cron parser
+	parser := cron.NewParser(cron.Minute | cron.Hour | cron.Dom | cron.Month | cron.Dow)
+	schedule, err := parser.Parse(expression)
+	if err != nil {
+		return nil, fmt.Errorf("invalid cron expression: %w", err)
+	}
+
+	return &CronTrigger{
+		expression: expression,
+		schedule:   schedule,
+	}, nil
+}
+
+// NextTime calculates the next occurrence of this cron trigger after the given time.
+func (t *CronTrigger) NextTime(now time.Time) *time.Time {
+	next := t.schedule.Next(now)
+	return &next
+}
+
+// Hash returns a stable hash value for the CronTrigger.
+func (t *CronTrigger) Hash() uint64 {
+	h := fnv.New64()
+	fmt.Fprintf(h, "cron:%s", t.expression)
+	return h.Sum64()
+}

internal/scheduling/cron_test.go

@@ -0,0 +1,131 @@
+package scheduling_test
+
+import (
+	"testing"
+	"time"
+
+	"github.com/Xevion/go-ha/internal/scheduling"
+)
+
+func TestCronTrigger(t *testing.T) {
+	// Use a fixed time for consistent testing
+	baseTime := time.Date(2025, 8, 2, 10, 30, 0, 0, time.UTC)
+
+	tests := []struct {
+		name     string
+		cron     string
+		now      time.Time
+		expected time.Time
+	}{
+		{
+			name:     "daily at 9am",
+			cron:     "0 9 * * *",
+			now:      baseTime,
+			expected: time.Date(2025, 8, 3, 9, 0, 0, 0, time.UTC),
+		},
+		{
+			name:     "every 15 minutes",
+			cron:     "*/15 * * * *",
+			now:      baseTime,
+			expected: time.Date(2025, 8, 2, 10, 45, 0, 0, time.UTC),
+		},
+		{
+			name: "weekdays at 8am (Saturday)",
+			// Base time is a Saturday, so next run should be Monday
+			cron:     "0 8 * * 1-5",
+			now:      time.Date(2025, 8, 2, 10, 30, 0, 0, time.UTC),
+			expected: time.Date(2025, 8, 4, 8, 0, 0, 0, time.UTC),
+		},
+		{
+			name: "weekdays at 8am (Sunday)",
+			// Base time is a Sunday, so next run should be Monday
+			cron:     "0 8 * * 1-5",
+			now:      time.Date(2025, 8, 3, 10, 30, 0, 0, time.UTC),
+			expected: time.Date(2025, 8, 4, 8, 0, 0, 0, time.UTC),
+		},
+
+		{
+			name:     "monthly on 1st",
+			cron:     "0 0 1 * *",
+			now:      baseTime,
+			expected: time.Date(2025, 9, 1, 0, 0, 0, 0, time.UTC),
+		},
+		{
+			name:     "specific time today",
+			cron:     "0 14 * * *",
+			now:      baseTime,
+			expected: time.Date(2025, 8, 2, 14, 0, 0, 0, time.UTC),
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			trigger, err := scheduling.NewCronTrigger(tt.cron)
+			if err != nil {
+				t.Fatalf("Failed to create cron trigger: %v", err)
+			}
+
+			next := trigger.NextTime(tt.now)
+			if next == nil {
+				t.Fatal("Expected next time, got nil")
+			}
+
+			if !next.Equal(tt.expected) {
+				t.Errorf("Expected %v, got %v", tt.expected, *next)
+			}
+		})
+	}
+}
+
+func TestCronTriggerInvalid(t *testing.T) {
+	tests := []struct {
+		name       string
+		expression string
+	}{
+		{
+			name:       "bad pattern",
+			expression: "invalid",
+		},
+		{
+			name:       "requires 5 fields - too few",
+			expression: "4",
+		},
+		{
+			name:       "requires 5 fields - missing field",
+			expression: "0 9 * *",
+		},
+		{
+			name:       "too many fields",
+			expression: "0 9 * * * *",
+		},
+		{
+			name:       "invalid minute",
+			expression: "60 9 * * *",
+		},
+		{
+			name:       "invalid hour",
+			expression: "0 25 * * *",
+		},
+		{
+			name:       "invalid day of month",
+			expression: "0 9 32 * *",
+		},
+		{
+			name:       "invalid month",
+			expression: "0 9 * 13 *",
+		},
+		{
+			name:       "invalid day of week",
+			expression: "0 9 * * 7",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			_, err := scheduling.NewCronTrigger(tt.expression)
+			if err == nil {
+				t.Errorf("Expected error for invalid expression %q", tt.expression)
+			}
+		})
+	}
+}

internal/scheduling/daily.go

@@ -0,0 +1,110 @@
+package scheduling
+
+import (
+	"fmt"
+	"hash/fnv"
+	"time"
+
+	"github.com/Xevion/go-ha/internal"
+	"github.com/dromara/carbon/v2"
+	"github.com/nathan-osman/go-sunrise"
+)
+
+type Trigger interface {
+	// NextTime calculates the next occurrence of this trigger after the given time
+	NextTime(now time.Time) *time.Time
+	Hash() uint64
+}
+
+// FixedTimeTrigger represents a trigger at a specific hour and minute each day
+type FixedTimeTrigger struct {
+	Hour   int // 0-23
+	Minute int // 0-59
+}
+
+// SunTrigger represents a trigger based on sunrise or sunset with optional offset
+type SunTrigger struct {
+	latitude  float64        // latitude of the location
+	longitude float64        // longitude of the location
+	sunset    bool           // true for sunset, false for sunrise
+	offset    *time.Duration // offset from sun event (can be negative)
+}
+
+func (t *FixedTimeTrigger) NextTime(now time.Time) *time.Time {
+	next := carbon.NewCarbon(now).SetHour(t.Hour).SetMinute(t.Minute)
+
+	// If the calculated time is before or equal to now, advance to the next day
+	if !next.StdTime().After(now) {
+		next = next.AddDay()
+	}
+
+	return internal.Ptr(next.StdTime().Local())
+}
+
+// Hash returns a stable hash value for the FixedTimeTrigger
+func (t *FixedTimeTrigger) Hash() uint64 {
+	h := fnv.New64()
+	fmt.Fprintf(h, "%d:%d", t.Hour, t.Minute)
+	return h.Sum64()
+}
+
+// NextTime returns the next time the sun will rise or set. If an offset is provided, it will be added to the calculated time.
+func (t *SunTrigger) NextTime(now time.Time) *time.Time {
+	var sun time.Time
+
+	if t.sunset {
+		_, sun = sunrise.SunriseSunset(t.latitude, t.longitude, now.Year(), now.Month(), now.Day())
+	} else {
+		sun, _ = sunrise.SunriseSunset(t.latitude, t.longitude, now.Year(), now.Month(), now.Day())
+	}
+
+	// In the case that the sun does not rise or set on the given day, return nil
+	if sun.IsZero() {
+		return nil
+	}
+
+	sun = sun.Local() // Convert to local time
+	if t.offset != nil && *t.offset != 0 {
+		sun = sun.Add(*t.offset) // Add the offset if provided and not zero
+	}
+
+	return &sun
+}
+
+// Hash returns a stable hash value for the SunTrigger
+func (t *SunTrigger) Hash() uint64 {
+	h := fnv.New64()
+	fmt.Fprintf(h, "%f:%f:%t", t.latitude, t.longitude, t.sunset)
+	if t.offset != nil {
+		fmt.Fprintf(h, ":%d", t.offset.Nanoseconds())
+	}
+	return h.Sum64()
+}
+
+// CompositeDailySchedule combines multiple triggers into a single daily schedule.
+type CompositeDailySchedule struct {
+	triggers []Trigger
+}
+
+// NextTime returns the next time the first viable trigger will run.
+func (c *CompositeDailySchedule) NextTime(now time.Time) *time.Time {
+	best := c.triggers[0].NextTime(now)
+
+	for _, trigger := range c.triggers[1:] {
+		potential := trigger.NextTime(now)
+		if potential != nil && (best == nil || potential.Before(*best)) {
+			best = potential
+		}
+	}
+
+	return best
+}
+
+// Hash returns a stable hash value for the CompositeDailySchedule
+func (c *CompositeDailySchedule) Hash() uint64 {
+	h := fnv.New64()
+	for _, trigger := range c.triggers {
+		fmt.Fprintf(h, "%d", trigger.Hash())
+	}
+	return h.Sum64()
+}

internal/scheduling/daily_test.go

@@ -0,0 +1,300 @@
+package scheduling
+
+import (
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestFixedTimeTrigger_NextTime(t *testing.T) {
+	tests := []struct {
+		name     string
+		hour     int
+		minute   int
+		now      time.Time
+		expected time.Time
+	}{
+		{
+			name:     "same day trigger",
+			hour:     14,
+			minute:   30,
+			now:      time.Date(2025, 8, 2, 10, 0, 0, 0, time.Local),
+			expected: time.Date(2025, 8, 2, 14, 30, 0, 0, time.Local),
+		},
+		{
+			name:     "next day trigger",
+			hour:     8,
+			minute:   0,
+			now:      time.Date(2025, 8, 2, 10, 0, 0, 0, time.Local),
+			expected: time.Date(2025, 8, 3, 8, 0, 0, 0, time.Local),
+		},
+		{
+			name:     "exact time",
+			hour:     10,
+			minute:   0,
+			now:      time.Date(2025, 8, 2, 10, 0, 0, 0, time.Local),
+			expected: time.Date(2025, 8, 3, 10, 0, 0, 0, time.Local),
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			trigger := &FixedTimeTrigger{
+				Hour:   tt.hour,
+				Minute: tt.minute,
+			}
+
+			result := trigger.NextTime(tt.now)
+			require.NotNil(t, result)
+			assert.Equal(t, tt.expected, *result)
+		})
+	}
+}
+
+func TestFixedTimeTrigger_Hash(t *testing.T) {
+	tests := []struct {
+		name     string
+		hour     int
+		minute   int
+		expected uint64
+	}{
+		{
+			name:     "basic time",
+			hour:     12,
+			minute:   30,
+			expected: 0, // We'll check it's not zero
+		},
+		{
+			name:     "midnight",
+			hour:     0,
+			minute:   0,
+			expected: 0, // We'll check it's not zero
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			trigger := &FixedTimeTrigger{
+				Hour:   tt.hour,
+				Minute: tt.minute,
+			}
+
+			hash := trigger.Hash()
+			assert.NotZero(t, hash)
+			assert.IsType(t, uint64(0), hash)
+		})
+	}
+
+	// Test that different times produce different hashes
+	trigger1 := &FixedTimeTrigger{Hour: 12, Minute: 30}
+	trigger2 := &FixedTimeTrigger{Hour: 12, Minute: 31}
+	trigger3 := &FixedTimeTrigger{Hour: 13, Minute: 30}
+
+	hash1 := trigger1.Hash()
+	hash2 := trigger2.Hash()
+	hash3 := trigger3.Hash()
+
+	assert.NotEqual(t, hash1, hash2)
+	assert.NotEqual(t, hash1, hash3)
+	assert.NotEqual(t, hash2, hash3)
+
+	// Test that same times produce same hashes
+	trigger4 := &FixedTimeTrigger{Hour: 12, Minute: 30}
+	hash4 := trigger4.Hash()
+	assert.Equal(t, hash1, hash4)
+}
+
+func TestSunTrigger_NextTime(t *testing.T) {
+	// Test with a known location (New York City)
+	lat, lon := 40.7128, -74.0060
+
+	tests := []struct {
+		name     string
+		sunset   bool
+		offset   *time.Duration
+		now      time.Time
+		expected bool // whether we expect a result
+	}{
+		{
+			name:     "sunrise without offset",
+			sunset:   false,
+			offset:   nil,
+			now:      time.Date(2025, 8, 2, 10, 0, 0, 0, time.Local),
+			expected: true,
+		},
+		{
+			name:     "sunset without offset",
+			sunset:   true,
+			offset:   nil,
+			now:      time.Date(2025, 8, 2, 10, 0, 0, 0, time.Local),
+			expected: true,
+		},
+		{
+			name:     "sunrise with positive offset",
+			sunset:   false,
+			offset:   func() *time.Duration { d := 30 * time.Minute; return &d }(),
+			now:      time.Date(2025, 8, 2, 10, 0, 0, 0, time.Local),
+			expected: true,
+		},
+		{
+			name:     "sunset with negative offset",
+			sunset:   true,
+			offset:   func() *time.Duration { d := -1 * time.Hour; return &d }(),
+			now:      time.Date(2025, 8, 2, 10, 0, 0, 0, time.Local),
+			expected: true,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			trigger := &SunTrigger{
+				latitude:  lat,
+				longitude: lon,
+				sunset:    tt.sunset,
+				offset:    tt.offset,
+			}
+
+			result := trigger.NextTime(tt.now)
+			if tt.expected {
+				require.NotNil(t, result)
+				assert.False(t, result.IsZero())
+			} else {
+				// For polar regions or extreme dates, sun might not rise/set
+				// This is acceptable behavior
+			}
+		})
+	}
+}
+
+func TestSunTrigger_Hash(t *testing.T) {
+	lat1, lon1 := 40.7128, -74.0060
+	lat2, lon2 := 51.5074, -0.1278
+
+	tests := []struct {
+		name   string
+		lat    float64
+		lon    float64
+		sunset bool
+		offset *time.Duration
+	}{
+		{
+			name:   "sunrise without offset",
+			lat:    lat1,
+			lon:    lon1,
+			sunset: false,
+			offset: nil,
+		},
+		{
+			name:   "sunset with offset",
+			lat:    lat1,
+			lon:    lon1,
+			sunset: true,
+			offset: func() *time.Duration { d := 30 * time.Minute; return &d }(),
+		},
+		{
+			name:   "different location",
+			lat:    lat2,
+			lon:    lon2,
+			sunset: false,
+			offset: nil,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			trigger := &SunTrigger{
+				latitude:  tt.lat,
+				longitude: tt.lon,
+				sunset:    tt.sunset,
+				offset:    tt.offset,
+			}
+
+			hash := trigger.Hash()
+			assert.NotZero(t, hash)
+			assert.IsType(t, uint64(0), hash)
+		})
+	}
+
+	// Test that different configurations produce different hashes
+	trigger1 := &SunTrigger{latitude: lat1, longitude: lon1, sunset: false, offset: nil}
+	trigger2 := &SunTrigger{latitude: lat1, longitude: lon1, sunset: true, offset: nil}
+	trigger3 := &SunTrigger{latitude: lat2, longitude: lon2, sunset: false, offset: nil}
+
+	hash1 := trigger1.Hash()
+	hash2 := trigger2.Hash()
+	hash3 := trigger3.Hash()
+
+	assert.NotEqual(t, hash1, hash2)
+	assert.NotEqual(t, hash1, hash3)
+	assert.NotEqual(t, hash2, hash3)
+
+	// Test that same configurations produce same hashes
+	trigger4 := &SunTrigger{latitude: lat1, longitude: lon1, sunset: false, offset: nil}
+	hash4 := trigger4.Hash()
+	assert.Equal(t, hash1, hash4)
+}
+
+func TestCompositeDailySchedule_NextTime(t *testing.T) {
+	trigger1 := &FixedTimeTrigger{Hour: 8, Minute: 0}
+	trigger2 := &FixedTimeTrigger{Hour: 12, Minute: 0}
+	trigger3 := &FixedTimeTrigger{Hour: 18, Minute: 0}
+
+	composite := &CompositeDailySchedule{
+		triggers: []Trigger{trigger1, trigger2, trigger3},
+	}
+
+	now := time.Date(2025, 8, 2, 10, 0, 0, 0, time.Local)
+	result := composite.NextTime(now)
+
+	require.NotNil(t, result)
+	// Should return the earliest trigger after now (12:00)
+	expected := time.Date(2025, 8, 2, 12, 0, 0, 0, time.Local)
+	assert.Equal(t, expected, *result)
+}
+
+func TestCompositeDailySchedule_Hash(t *testing.T) {
+	trigger1 := &FixedTimeTrigger{Hour: 8, Minute: 0}
+	trigger2 := &FixedTimeTrigger{Hour: 12, Minute: 0}
+
+	composite1 := &CompositeDailySchedule{
+		triggers: []Trigger{trigger1, trigger2},
+	}
+
+	composite2 := &CompositeDailySchedule{
+		triggers: []Trigger{trigger2, trigger1}, // Different order
+	}
+
+	composite3 := &CompositeDailySchedule{
+		triggers: []Trigger{trigger1}, // Different number of triggers
+	}
+
+	hash1 := composite1.Hash()
+	hash2 := composite2.Hash()
+	hash3 := composite3.Hash()
+
+	assert.NotZero(t, hash1)
+	assert.NotZero(t, hash2)
+	assert.NotZero(t, hash3)
+	assert.IsType(t, uint64(0), hash1)
+
+	// Different orders should produce different hashes
+	assert.NotEqual(t, hash1, hash2)
+	assert.NotEqual(t, hash1, hash3)
+	assert.NotEqual(t, hash2, hash3)
+
+	// Same configuration should produce same hash
+	composite4 := &CompositeDailySchedule{
+		triggers: []Trigger{trigger1, trigger2},
+	}
+	hash4 := composite4.Hash()
+	assert.Equal(t, hash1, hash4)
+}
+
+func TestTriggerInterface(t *testing.T) {
+	// Test that all trigger types implement the Trigger interface
+	var _ Trigger = &FixedTimeTrigger{}
+	var _ Trigger = &SunTrigger{}
+	var _ Trigger = &CompositeDailySchedule{}
+}

internal/scheduling/interval.go

@@ -0,0 +1,91 @@
+package scheduling
+
+import (
+	"fmt"
+	"hash/fnv"
+	"time"
+)
+
+// IntervalTrigger represents a trigger that fires at a sequence of intervals.
+type IntervalTrigger struct {
+	intervals     []time.Duration // required for hash
+	epoch         time.Time       // required for hash
+	totalDuration time.Duration
+}
+
+// NewIntervalTrigger creates a new IntervalTrigger from one or more durations.
+// An error is returned if no intervals are provided or if any interval is not positive.
+// The epoch is the reference point for all interval calculations.
+// The duration between each time alternates between each interval (or, if there is only one interval, it is the interval).
+// For example, if the intervals are [1h, 2h, 3h], the first time will be at epoch + 1h, the second time will be at
+// epoch + 1h + 2h, the third time will be at epoch + 1h + 2h + 3h, and so on.
+func NewIntervalTrigger(interval time.Duration, additional ...time.Duration) (*IntervalTrigger, error) {
+	if interval <= 0 {
+		return nil, fmt.Errorf("intervals must be positive")
+	}
+	totalDuration := interval
+	for _, d := range additional {
+		if d <= 0 {
+			return nil, fmt.Errorf("intervals must be positive")
+		}
+		totalDuration += d
+	}
+
+	return &IntervalTrigger{
+		intervals:     append([]time.Duration{interval}, additional...),
+		epoch:         time.Time{}, // default epoch is zero time
+		totalDuration: totalDuration,
+	}, nil
+}
+
+// WithEpoch sets the epoch time for the IntervalTrigger. The epoch is the reference point for all interval calculations.
+func (t *IntervalTrigger) WithEpoch(epoch time.Time) *IntervalTrigger {
+	t.epoch = epoch
+	return t
+}
+
+// NextTime calculates the next occurrence of this interval trigger after the given time.
+func (t *IntervalTrigger) NextTime(now time.Time) *time.Time {
+	if t.totalDuration == 0 {
+		return nil
+	}
+
+	epoch := t.epoch
+	if epoch.IsZero() {
+		epoch = time.Unix(0, 0).UTC()
+	}
+
+	// If the current time is before the epoch, the next time is the first one in the cycle.
+	if now.Before(epoch) {
+		next := epoch.Add(t.intervals[0])
+		return &next
+	}
+
+	cyclesSinceEpoch := now.Sub(epoch) / t.totalDuration
+	currentCycleStart := epoch.Add(time.Duration(cyclesSinceEpoch) * t.totalDuration)
+
+	// Cycle through the offsets until the next time is found
+	cycle := currentCycleStart
+	for i := 0; i < len(t.intervals); i++ {
+		cycle = cycle.Add(t.intervals[i])
+		if cycle.After(now) {
+			return &cycle
+		}
+	}
+
+	// If we've reached here, it means we're at the end of a cycle.
+	// The next time will be the first interval of the next cycle.
+	nextCycleStart := currentCycleStart.Add(t.totalDuration)
+	next := nextCycleStart.Add(t.intervals[0])
+	return &next
+}
+
+// Hash returns a stable hash value for the IntervalTrigger.
+func (t *IntervalTrigger) Hash() uint64 {
+	h := fnv.New64a()
+	fmt.Fprintf(h, "interval:%d", t.epoch.UnixNano())
+	for _, d := range t.intervals {
+		fmt.Fprintf(h, ":%d", d)
+	}
+	return h.Sum64()
+}

internal/scheduling/interval_test.go

@@ -0,0 +1,134 @@
+package scheduling
+
+import (
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestNewIntervalTrigger(t *testing.T) {
+	t.Run("valid single interval", func(t *testing.T) {
+		trigger, err := NewIntervalTrigger(time.Hour)
+		require.NoError(t, err)
+		assert.NotNil(t, trigger)
+		assert.Equal(t, []time.Duration{time.Hour}, trigger.intervals)
+		assert.Equal(t, time.Hour, trigger.totalDuration)
+		assert.True(t, trigger.epoch.IsZero())
+	})
+
+	t.Run("valid multiple intervals", func(t *testing.T) {
+		trigger, err := NewIntervalTrigger(time.Hour, 30*time.Minute)
+		require.NoError(t, err)
+		assert.NotNil(t, trigger)
+		assert.Equal(t, []time.Duration{time.Hour, 30 * time.Minute}, trigger.intervals)
+		assert.Equal(t, time.Hour+30*time.Minute, trigger.totalDuration)
+		assert.True(t, trigger.epoch.IsZero())
+	})
+
+	t.Run("invalid zero interval", func(t *testing.T) {
+		_, err := NewIntervalTrigger(time.Hour, 0)
+		assert.Error(t, err)
+	})
+
+	t.Run("invalid negative interval", func(t *testing.T) {
+		_, err := NewIntervalTrigger(time.Hour, -time.Minute)
+		assert.Error(t, err)
+	})
+
+	t.Run("first interval is invalid if zero", func(t *testing.T) {
+		_, err := NewIntervalTrigger(0)
+		assert.Error(t, err)
+	})
+}
+
+func TestIntervalTrigger_NextTime(t *testing.T) {
+	// A known time for predictable tests
+	now := time.Date(2024, 7, 25, 12, 0, 0, 0, time.UTC)
+
+	t.Run("single interval no epoch", func(t *testing.T) {
+		trigger, _ := NewIntervalTrigger(time.Hour)
+		// With a zero epoch, NextTime should calculate from the last hour boundary.
+		next := trigger.NextTime(now)
+		expected := time.Date(2024, 7, 25, 13, 0, 0, 0, time.UTC)
+		assert.Equal(t, expected, *next)
+	})
+
+	t.Run("single interval with aligned epoch", func(t *testing.T) {
+		trigger, _ := NewIntervalTrigger(time.Hour)
+		// Epoch is on an hour boundary relative to the Unix epoch, so it's not modified by WithEpoch.
+		epoch := time.Date(2024, 7, 25, 0, 0, 0, 0, time.UTC)
+		trigger.WithEpoch(epoch)
+		next := trigger.NextTime(now)
+		expected := time.Date(2024, 7, 25, 13, 0, 0, 0, time.UTC)
+		assert.Equal(t, expected, *next)
+	})
+
+	t.Run("multiple intervals", func(t *testing.T) {
+		trigger, _ := NewIntervalTrigger(time.Hour, 30*time.Minute) // total 1.5h
+		epoch := time.Date(2024, 7, 25, 0, 0, 0, 0, time.UTC)
+		trigger.WithEpoch(epoch)
+		// now = 12:00. epoch = 00:00. duration = 12h.
+		// cycles = 12h / 1.5h = 8.
+		// currentCycleStart = 00:00 + 8 * 1.5h = 12:00.
+		// 1. 12:00 + 1h = 13:00. This is after now, so it's the next time.
+		next := trigger.NextTime(now)
+		expected := time.Date(2024, 7, 25, 13, 0, 0, 0, time.UTC)
+		assert.Equal(t, expected, *next)
+
+		// Test the time after that
+		now2 := time.Date(2024, 7, 25, 13, 0, 0, 0, time.UTC)
+		// currentCycleStart is still 12:00.
+		// 1. 12:00 + 1h = 13:00. Not after now2.
+		// 2. 13:00 + 30m = 13:30. This is after now2.
+		next2 := trigger.NextTime(now2)
+		expected2 := time.Date(2024, 7, 25, 13, 30, 0, 0, time.UTC)
+		assert.Equal(t, expected2, *next2)
+	})
+
+	t.Run("now before epoch", func(t *testing.T) {
+		trigger, _ := NewIntervalTrigger(time.Hour)
+		epoch := time.Date(2024, 7, 26, 0, 0, 0, 0, time.UTC)
+		trigger.WithEpoch(epoch)
+		next := trigger.NextTime(now)
+		expected := time.Date(2024, 7, 26, 1, 0, 0, 0, time.UTC)
+		assert.Equal(t, expected, *next)
+	})
+
+	t.Run("now is exactly on a trigger time", func(t *testing.T) {
+		trigger, _ := NewIntervalTrigger(time.Hour)
+		epoch := time.Date(2024, 7, 25, 0, 0, 0, 0, time.UTC)
+		trigger.WithEpoch(epoch)
+		nowOnTrigger := time.Date(2024, 7, 25, 12, 0, 0, 0, time.UTC)
+		// The next trigger should be the following one.
+		next := trigger.NextTime(nowOnTrigger)
+		expected := time.Date(2024, 7, 25, 13, 0, 0, 0, time.UTC)
+		assert.Equal(t, expected, *next)
+	})
+
+}
+
+func TestIntervalTrigger_Hash(t *testing.T) {
+	t.Run("stable hash for same configuration", func(t *testing.T) {
+		trigger1, _ := NewIntervalTrigger(time.Hour, 30*time.Minute)
+		trigger2, _ := NewIntervalTrigger(time.Hour, 30*time.Minute)
+		assert.Equal(t, trigger1.Hash(), trigger2.Hash())
+	})
+
+	t.Run("hash changes with interval", func(t *testing.T) {
+		trigger1, _ := NewIntervalTrigger(time.Hour, 30*time.Minute)
+		trigger2, _ := NewIntervalTrigger(time.Hour, 31*time.Minute)
+		assert.NotEqual(t, trigger1.Hash(), trigger2.Hash())
+	})
+
+	t.Run("hash changes with epoch", func(t *testing.T) {
+		trigger1, _ := NewIntervalTrigger(time.Hour)
+		trigger1.WithEpoch(time.Date(2024, 1, 1, 0, 0, 0, 0, time.UTC))
+
+		trigger2, _ := NewIntervalTrigger(time.Hour)
+		trigger2.WithEpoch(time.Date(2024, 1, 2, 0, 0, 0, 0, time.UTC))
+
+		assert.NotEqual(t, trigger1.Hash(), trigger2.Hash())
+	})
+}

internal/services/alarm_control_panel.go

@@ -8,9 +8,7 @@ type AlarmControlPanel struct {
 	conn *connect.HAConnection
 }
 
-// Send the alarm the command for arm away.
-// Takes an entityId and an optional
-// map that is translated into service_data.
+// Send the alarm the command for arm away. Takes an entityId and an optional map that is translated into service_data.
 func (acp AlarmControlPanel) ArmAway(entityId string, serviceData ...map[string]any) error {
 	req := NewBaseServiceRequest(entityId)
 	req.Domain = "alarm_control_panel"
@@ -22,9 +20,7 @@ func (acp AlarmControlPanel) ArmAway(entityId string, serviceData ...map[string]
 	return acp.conn.WriteMessage(req)
 }
 
-// Send the alarm the command for arm away.
-// Takes an entityId and an optional
-// map that is translated into service_data.
+// Send the alarm the command for arm away. Takes an entityId and an optional map that is translated into service_data.
 func (acp AlarmControlPanel) ArmWithCustomBypass(entityId string, serviceData ...map[string]any) error {
 	req := NewBaseServiceRequest(entityId)
 	req.Domain = "alarm_control_panel"
@@ -36,9 +32,7 @@ func (acp AlarmControlPanel) ArmWithCustomBypass(entityId string, serviceData ..
 	return acp.conn.WriteMessage(req)
 }
 
-// Send the alarm the command for arm home.
-// Takes an entityId and an optional
-// map that is translated into service_data.
+// Send the alarm the command for arm home. Takes an entityId and an optional map that is translated into service_data.
 func (acp AlarmControlPanel) ArmHome(entityId string, serviceData ...map[string]any) error {
 	req := NewBaseServiceRequest(entityId)
 	req.Domain = "alarm_control_panel"
@@ -50,9 +44,7 @@ func (acp AlarmControlPanel) ArmHome(entityId string, serviceData ...map[string]
 	return acp.conn.WriteMessage(req)
 }
 
-// Send the alarm the command for arm night.
-// Takes an entityId and an optional
-// map that is translated into service_data.
+// Send the alarm the command for arm night. Takes an entityId and an optional map that is translated into service_data.
 func (acp AlarmControlPanel) ArmNight(entityId string, serviceData ...map[string]any) error {
 	req := NewBaseServiceRequest(entityId)
 	req.Domain = "alarm_control_panel"
@@ -64,9 +56,7 @@ func (acp AlarmControlPanel) ArmNight(entityId string, serviceData ...map[string
 	return acp.conn.WriteMessage(req)
 }
 
-// Send the alarm the command for arm vacation.
-// Takes an entityId and an optional
-// map that is translated into service_data.
+// Send the alarm the command for arm vacation. Takes an entityId and an optional map that is translated into service_data.
 func (acp AlarmControlPanel) ArmVacation(entityId string, serviceData ...map[string]any) error {
 	req := NewBaseServiceRequest(entityId)
 	req.Domain = "alarm_control_panel"
@@ -78,9 +68,7 @@ func (acp AlarmControlPanel) ArmVacation(entityId string, serviceData ...map[str
 	return acp.conn.WriteMessage(req)
 }
 
-// Send the alarm the command for disarm.
-// Takes an entityId and an optional
-// map that is translated into service_data.
+// Send the alarm the command for disarm. Takes an entityId and an optional map that is translated into service_data.
 func (acp AlarmControlPanel) Disarm(entityId string, serviceData ...map[string]any) error {
 	req := NewBaseServiceRequest(entityId)
 	req.Domain = "alarm_control_panel"
@@ -92,9 +80,7 @@ func (acp AlarmControlPanel) Disarm(entityId string, serviceData ...map[string]a
 	return acp.conn.WriteMessage(req)
 }
 
-// Send the alarm the command for trigger.
-// Takes an entityId and an optional
-// map that is translated into service_data.
+// Send the alarm the command for trigger. Takes an entityId and an optional map that is translated into service_data.
 func (acp AlarmControlPanel) Trigger(entityId string, serviceData ...map[string]any) error {
 	req := NewBaseServiceRequest(entityId)
 	req.Domain = "alarm_control_panel"

internal/services/cover.go

@@ -44,8 +44,7 @@ func (c Cover) OpenTilt(entityId string) error {
 	return c.conn.WriteMessage(req)
 }
 
-// Move to specific position all or specified cover. Takes an entityId and an optional
-// map that is translated into service_data.
+// Move to specific position all or specified cover. Takes an entityId and an optional map that is translated into service_data.
 func (c Cover) SetPosition(entityId string, serviceData ...map[string]any) error {
 	req := NewBaseServiceRequest(entityId)
 	req.Domain = "cover"
@@ -57,8 +56,7 @@ func (c Cover) SetPosition(entityId string, serviceData ...map[string]any) error
 	return c.conn.WriteMessage(req)
 }
 
-// Move to specific position all or specified cover tilt. Takes an entityId and an optional
-// map that is translated into service_data.
+// Move to specific position all or specified cover tilt. Takes an entityId and an optional map that is translated into service_data.
 func (c Cover) SetTiltPosition(entityId string, serviceData ...map[string]any) error {
 	req := NewBaseServiceRequest(entityId)
 	req.Domain = "cover"

internal/services/event.go

@@ -17,8 +17,7 @@ type FireEventRequest struct {
 	EventData map[string]any `json:"event_data,omitempty"`
 }
 
-// Fire an event. Takes an event type and an optional map that is sent
-// as `event_data`.
+// Fire an event. Takes an event type and an optional map that is sent as `event_data`.
 func (e Event) Fire(eventType string, eventData ...map[string]any) error {
 	req := FireEventRequest{
 		Id:   internal.NextId(),

internal/services/home_assistant.go

@@ -8,8 +8,7 @@ type HomeAssistant struct {
 	conn *connect.HAConnection
 }
 
-// TurnOn a Home Assistant entity. Takes an entityId and an optional
-// map that is translated into service_data.
+// TurnOn a Home Assistant entity. Takes an entityId and an optional map that is translated into service_data.
 func (ha *HomeAssistant) TurnOn(entityId string, serviceData ...map[string]any) error {
 	req := NewBaseServiceRequest(entityId)
 	req.Domain = "homeassistant"
@@ -21,8 +20,7 @@ func (ha *HomeAssistant) TurnOn(entityId string, serviceData ...map[string]any)
 	return ha.conn.WriteMessage(req)
 }
 
-// Toggle a Home Assistant entity. Takes an entityId and an optional
-// map that is translated into service_data.
+// Toggle a Home Assistant entity. Takes an entityId and an optional map that is translated into service_data.
 func (ha *HomeAssistant) Toggle(entityId string, serviceData ...map[string]any) error {
 	req := NewBaseServiceRequest(entityId)
 	req.Domain = "homeassistant"
@@ -34,6 +32,7 @@ func (ha *HomeAssistant) Toggle(entityId string, serviceData ...map[string]any)
 	return ha.conn.WriteMessage(req)
 }
 
+// TurnOff turns off a Home Assistant entity.
 func (ha *HomeAssistant) TurnOff(entityId string) error {
 	req := NewBaseServiceRequest(entityId)
 	req.Domain = "homeassistant"

internal/services/input_boolean.go

@@ -8,6 +8,7 @@ type InputBoolean struct {
 	conn *connect.HAConnection
 }
 
+// TurnOn turns on an input boolean entity.
 func (ib InputBoolean) TurnOn(entityId string) error {
 	req := NewBaseServiceRequest(entityId)
 	req.Domain = "input_boolean"
@@ -16,6 +17,7 @@ func (ib InputBoolean) TurnOn(entityId string) error {
 	return ib.conn.WriteMessage(req)
 }
 
+// Toggle toggles an input boolean entity.
 func (ib InputBoolean) Toggle(entityId string) error {
 	req := NewBaseServiceRequest(entityId)
 	req.Domain = "input_boolean"
@@ -24,6 +26,7 @@ func (ib InputBoolean) Toggle(entityId string) error {
 	return ib.conn.WriteMessage(req)
 }
 
+// TurnOff turns off an input boolean entity.
 func (ib InputBoolean) TurnOff(entityId string) error {
 	req := NewBaseServiceRequest(entityId)
 	req.Domain = "input_boolean"

internal/services/input_button.go

@@ -8,6 +8,7 @@ type InputButton struct {
 	conn *connect.HAConnection
 }
 
+// Press presses an input button entity.
 func (ib InputButton) Press(entityId string) error {
 	req := NewBaseServiceRequest(entityId)
 	req.Domain = "input_button"

internal/services/input_text.go

@@ -8,6 +8,7 @@ type InputText struct {
 	conn *connect.HAConnection
 }
 
+// Set sets the value of an input text entity.
 func (ib InputText) Set(entityId string, value string) error {
 	req := NewBaseServiceRequest(entityId)
 	req.Domain = "input_text"

internal/services/light.go

@@ -8,8 +8,7 @@ type Light struct {
 	conn *connect.HAConnection
 }
 
-// TurnOn a light entity. Takes an entityId and an optional
-// map that is translated into service_data.
+// TurnOn a light entity. Takes an entityId and an optional map that is translated into service_data.
 func (l Light) TurnOn(entityId string, serviceData ...map[string]any) error {
 	req := NewBaseServiceRequest(entityId)
 	req.Domain = "light"
@@ -21,8 +20,7 @@ func (l Light) TurnOn(entityId string, serviceData ...map[string]any) error {
 	return l.conn.WriteMessage(req)
 }
 
-// Toggle a light entity. Takes an entityId and an optional
-// map that is translated into service_data.
+// Toggle a light entity. Takes an entityId and an optional map that is translated into service_data.
 func (l Light) Toggle(entityId string, serviceData ...map[string]any) error {
 	req := NewBaseServiceRequest(entityId)
 	req.Domain = "light"
@@ -34,6 +32,7 @@ func (l Light) Toggle(entityId string, serviceData ...map[string]any) error {
 	return l.conn.WriteMessage(req)
 }
 
+// TurnOff turns off a light entity.
 func (l Light) TurnOff(entityId string) error {
 	req := NewBaseServiceRequest(entityId)
 	req.Domain = "light"

internal/services/lock.go

@@ -8,8 +8,7 @@ type Lock struct {
 	conn *connect.HAConnection
 }
 
-// Lock a lock entity. Takes an entityId and an optional
-// map that is translated into service_data.
+// Lock a lock entity. Takes an entityId and an optional map that is translated into service_data.
 func (l Lock) Lock(entityId string, serviceData ...map[string]any) error {
 	req := NewBaseServiceRequest(entityId)
 	req.Domain = "lock"
@@ -21,8 +20,7 @@ func (l Lock) Lock(entityId string, serviceData ...map[string]any) error {
 	return l.conn.WriteMessage(req)
 }
 
-// Unlock a lock entity. Takes an entityId and an optional
-// map that is translated into service_data.
+// Unlock a lock entity. Takes an entityId and an optional map that is translated into service_data.
 func (l Lock) Unlock(entityId string, serviceData ...map[string]any) error {
 	req := NewBaseServiceRequest(entityId)
 	req.Domain = "lock"

internal/services/media_player.go

@@ -8,8 +8,7 @@ type MediaPlayer struct {
 	conn *connect.HAConnection
 }
 
-// Send the media player the command to clear players playlist.
-// Takes an entityId.
+// Send the media player the command to clear players playlist. Takes an entityId.
 func (mp MediaPlayer) ClearPlaylist(entityId string) error {
 	req := NewBaseServiceRequest(entityId)
 	req.Domain = "media_player"
@@ -18,9 +17,7 @@ func (mp MediaPlayer) ClearPlaylist(entityId string) error {
 	return mp.conn.WriteMessage(req)
 }
 
-// Group players together. Only works on platforms with support for player groups.
-// Takes an entityId and an optional
-// map that is translated into service_data.
+// Group players together. Only works on platforms with support for player groups. Takes an entityId and an optional map that is translated into service_data.
 func (mp MediaPlayer) Join(entityId string, serviceData ...map[string]any) error {
 	req := NewBaseServiceRequest(entityId)
 	req.Domain = "media_player"
@@ -32,8 +29,7 @@ func (mp MediaPlayer) Join(entityId string, serviceData ...map[string]any) error
 	return mp.conn.WriteMessage(req)
 }
 
-// Send the media player the command for next track.
-// Takes an entityId.
+// Send the media player the command for next track. Takes an entityId.
 func (mp MediaPlayer) Next(entityId string) error {
 	req := NewBaseServiceRequest(entityId)
 	req.Domain = "media_player"
@@ -42,8 +38,7 @@ func (mp MediaPlayer) Next(entityId string) error {
 	return mp.conn.WriteMessage(req)
 }
 
-// Send the media player the command for pause.
-// Takes an entityId.
+// Send the media player the command for pause. Takes an entityId.
 func (mp MediaPlayer) Pause(entityId string) error {
 	req := NewBaseServiceRequest(entityId)
 	req.Domain = "media_player"
@@ -52,8 +47,7 @@ func (mp MediaPlayer) Pause(entityId string) error {
 	return mp.conn.WriteMessage(req)
 }
 
-// Send the media player the command for play.
-// Takes an entityId.
+// Send the media player the command for play. Takes an entityId.
 func (mp MediaPlayer) Play(entityId string) error {
 	req := NewBaseServiceRequest(entityId)
 	req.Domain = "media_player"
@@ -62,8 +56,7 @@ func (mp MediaPlayer) Play(entityId string) error {
 	return mp.conn.WriteMessage(req)
 }
 
-// Toggle media player play/pause state.
-// Takes an entityId.
+// Toggle media player play/pause state. Takes an entityId.
 func (mp MediaPlayer) PlayPause(entityId string) error {
 	req := NewBaseServiceRequest(entityId)
 	req.Domain = "media_player"
@@ -72,8 +65,7 @@ func (mp MediaPlayer) PlayPause(entityId string) error {
 	return mp.conn.WriteMessage(req)
 }
 
-// Send the media player the command for previous track.
-// Takes an entityId.
+// Send the media player the command for previous track. Takes an entityId.
 func (mp MediaPlayer) Previous(entityId string) error {
 	req := NewBaseServiceRequest(entityId)
 	req.Domain = "media_player"
@@ -82,9 +74,7 @@ func (mp MediaPlayer) Previous(entityId string) error {
 	return mp.conn.WriteMessage(req)
 }
 
-// Send the media player the command to seek in current playing media.
-// Takes an entityId and an optional
-// map that is translated into service_data.
+// Send the media player the command to seek in current playing media. Takes an entityId and an optional map that is translated into service_data.
 func (mp MediaPlayer) Seek(entityId string, serviceData ...map[string]any) error {
 	req := NewBaseServiceRequest(entityId)
 	req.Domain = "media_player"
@@ -96,8 +86,7 @@ func (mp MediaPlayer) Seek(entityId string, serviceData ...map[string]any) error
 	return mp.conn.WriteMessage(req)
 }
 
-// Send the media player the stop command.
-// Takes an entityId.
+// Send the media player the stop command. Takes an entityId.
 func (mp MediaPlayer) Stop(entityId string) error {
 	req := NewBaseServiceRequest(entityId)
 	req.Domain = "media_player"
@@ -106,9 +95,7 @@ func (mp MediaPlayer) Stop(entityId string) error {
 	return mp.conn.WriteMessage(req)
 }
 
-// Send the media player the command for playing media.
-// Takes an entityId and an optional
-// map that is translated into service_data.
+// Send the media player the command to play a media. Takes an entityId and an optional map that is translated into service_data.
 func (mp MediaPlayer) PlayMedia(entityId string, serviceData ...map[string]any) error {
 	req := NewBaseServiceRequest(entityId)
 	req.Domain = "media_player"
@@ -120,8 +107,7 @@ func (mp MediaPlayer) PlayMedia(entityId string, serviceData ...map[string]any)
 	return mp.conn.WriteMessage(req)
 }
 
-// Set repeat mode. Takes an entityId and an optional
-// map that is translated into service_data.
+// Set repeat mode. Takes an entityId and an optional map that is translated into service_data.
 func (mp MediaPlayer) RepeatSet(entityId string, serviceData ...map[string]any) error {
 	req := NewBaseServiceRequest(entityId)
 	req.Domain = "media_player"
@@ -133,9 +119,7 @@ func (mp MediaPlayer) RepeatSet(entityId string, serviceData ...map[string]any)
 	return mp.conn.WriteMessage(req)
 }
 
-// Send the media player the command to change sound mode.
-// Takes an entityId and an optional
-// map that is translated into service_data.
+// Select a sound mode. Takes an entityId and an optional map that is translated into service_data.
 func (mp MediaPlayer) SelectSoundMode(entityId string, serviceData ...map[string]any) error {
 	req := NewBaseServiceRequest(entityId)
 	req.Domain = "media_player"
@@ -147,9 +131,7 @@ func (mp MediaPlayer) SelectSoundMode(entityId string, serviceData ...map[string
 	return mp.conn.WriteMessage(req)
 }
 
-// Send the media player the command to change input source.
-// Takes an entityId and an optional
-// map that is translated into service_data.
+// Select a source. Takes an entityId and an optional map that is translated into service_data.
 func (mp MediaPlayer) SelectSource(entityId string, serviceData ...map[string]any) error {
 	req := NewBaseServiceRequest(entityId)
 	req.Domain = "media_player"
@@ -161,9 +143,7 @@ func (mp MediaPlayer) SelectSource(entityId string, serviceData ...map[string]an
 	return mp.conn.WriteMessage(req)
 }
 
-// Set shuffling state.
-// Takes an entityId and an optional
-// map that is translated into service_data.
+// Toggle shuffle state. Takes an entityId and an optional map that is translated into service_data.
 func (mp MediaPlayer) Shuffle(entityId string, serviceData ...map[string]any) error {
 	req := NewBaseServiceRequest(entityId)
 	req.Domain = "media_player"
@@ -175,8 +155,7 @@ func (mp MediaPlayer) Shuffle(entityId string, serviceData ...map[string]any) er
 	return mp.conn.WriteMessage(req)
 }
 
-// Toggles a media player power state.
-// Takes an entityId.
+// Toggle a media player on/off. Takes an entityId.
 func (mp MediaPlayer) Toggle(entityId string) error {
 	req := NewBaseServiceRequest(entityId)
 	req.Domain = "media_player"
@@ -185,8 +164,7 @@ func (mp MediaPlayer) Toggle(entityId string) error {
 	return mp.conn.WriteMessage(req)
 }
 
-// Turn a media player power off.
-// Takes an entityId.
+// Turn off a media player. Takes an entityId.
 func (mp MediaPlayer) TurnOff(entityId string) error {
 	req := NewBaseServiceRequest(entityId)
 	req.Domain = "media_player"
@@ -195,8 +173,7 @@ func (mp MediaPlayer) TurnOff(entityId string) error {
 	return mp.conn.WriteMessage(req)
 }
 
-// Turn a media player power on.
-// Takes an entityId.
+// Turn on a media player. Takes an entityId.
 func (mp MediaPlayer) TurnOn(entityId string) error {
 	req := NewBaseServiceRequest(entityId)
 	req.Domain = "media_player"
@@ -205,9 +182,7 @@ func (mp MediaPlayer) TurnOn(entityId string) error {
 	return mp.conn.WriteMessage(req)
 }
 
-// Unjoin the player from a group. Only works on
-// platforms with support for player groups.
-// Takes an entityId.
+// Separate a player from a group. Only works on platforms with support for player groups. Takes an entityId.
 func (mp MediaPlayer) Unjoin(entityId string) error {
 	req := NewBaseServiceRequest(entityId)
 	req.Domain = "media_player"
@@ -216,8 +191,7 @@ func (mp MediaPlayer) Unjoin(entityId string) error {
 	return mp.conn.WriteMessage(req)
 }
 
-// Turn a media player volume down.
-// Takes an entityId.
+// Send the media player the command for volume down. Takes an entityId.
 func (mp MediaPlayer) VolumeDown(entityId string) error {
 	req := NewBaseServiceRequest(entityId)
 	req.Domain = "media_player"
@@ -226,9 +200,7 @@ func (mp MediaPlayer) VolumeDown(entityId string) error {
 	return mp.conn.WriteMessage(req)
 }
 
-// Mute a media player's volume.
-// Takes an entityId and an optional
-// map that is translated into service_data.
+// Mute a media player. Takes an entityId and an optional map that is translated into service_data.
 func (mp MediaPlayer) VolumeMute(entityId string, serviceData ...map[string]any) error {
 	req := NewBaseServiceRequest(entityId)
 	req.Domain = "media_player"
@@ -240,9 +212,7 @@ func (mp MediaPlayer) VolumeMute(entityId string, serviceData ...map[string]any)
 	return mp.conn.WriteMessage(req)
 }
 
-// Set a media player's volume level.
-// Takes an entityId and an optional
-// map that is translated into service_data.
+// Set volume level. Takes an entityId and an optional map that is translated into service_data.
 func (mp MediaPlayer) VolumeSet(entityId string, serviceData ...map[string]any) error {
 	req := NewBaseServiceRequest(entityId)
 	req.Domain = "media_player"
@@ -254,8 +224,7 @@ func (mp MediaPlayer) VolumeSet(entityId string, serviceData ...map[string]any)
 	return mp.conn.WriteMessage(req)
 }
 
-// Turn a media player volume up.
-// Takes an entityId.
+// Send the media player the command for volume up. Takes an entityId.
 func (mp MediaPlayer) VolumeUp(entityId string) error {
 	req := NewBaseServiceRequest(entityId)
 	req.Domain = "media_player"

internal/services/scene.go

@@ -20,8 +20,7 @@ func (s Scene) Apply(serviceData ...map[string]any) error {
 	return s.conn.WriteMessage(req)
 }
 
-// Create a scene entity. Takes an entityId and an optional
-// map that is translated into service_data.
+// Create a scene entity. Takes an entityId and an optional map that is translated into service_data.
 func (s Scene) Create(entityId string, serviceData ...map[string]any) error {
 	req := NewBaseServiceRequest(entityId)
 	req.Domain = "scene"
@@ -42,8 +41,7 @@ func (s Scene) Reload() error {
 	return s.conn.WriteMessage(req)
 }
 
-// TurnOn a scene entity. Takes an entityId and an optional
-// map that is translated into service_data.
+// TurnOn a scene entity. Takes an entityId and an optional map that is translated into service_data.
 func (s Scene) TurnOn(entityId string, serviceData ...map[string]any) error {
 	req := NewBaseServiceRequest(entityId)
 	req.Domain = "scene"

internal/services/switch.go

@@ -8,6 +8,7 @@ type Switch struct {
 	conn *connect.HAConnection
 }
 
+// TurnOn turns on a switch entity.
 func (s Switch) TurnOn(entityId string) error {
 	req := NewBaseServiceRequest(entityId)
 	req.Domain = "switch"
@@ -16,6 +17,7 @@ func (s Switch) TurnOn(entityId string) error {
 	return s.conn.WriteMessage(req)
 }
 
+// Toggle toggles a switch entity.
 func (s Switch) Toggle(entityId string) error {
 	req := NewBaseServiceRequest(entityId)
 	req.Domain = "switch"
@@ -24,6 +26,7 @@ func (s Switch) Toggle(entityId string) error {
 	return s.conn.WriteMessage(req)
 }
 
+// TurnOff turns off a switch entity.
 func (s Switch) TurnOff(entityId string) error {
 	req := NewBaseServiceRequest(entityId)
 	req.Domain = "switch"

internal/services/tts.go

@@ -17,9 +17,7 @@ func (tts TTS) ClearCache() error {
 	return tts.conn.WriteMessage(req)
 }
 
-// Say something using text-to-speech on a media player with cloud.
-// Takes an entityId and an optional
-// map that is translated into service_data.
+// Say something using text-to-speech on a media player with cloud. Takes an entityId and an optional map that is translated into service_data.
 func (tts TTS) CloudSay(entityId string, serviceData ...map[string]any) error {
 	req := NewBaseServiceRequest(entityId)
 	req.Domain = "tts"
@@ -31,9 +29,7 @@ func (tts TTS) CloudSay(entityId string, serviceData ...map[string]any) error {
 	return tts.conn.WriteMessage(req)
 }
 
-// Say something using text-to-speech on a media player with google_translate.
-// Takes an entityId and an optional
-// map that is translated into service_data.
+// Say something using text-to-speech on a media player with google_translate. Takes an entityId and an optional map that is translated into service_data.
 func (tts TTS) GoogleTranslateSay(entityId string, serviceData ...map[string]any) error {
 	req := NewBaseServiceRequest(entityId)
 	req.Domain = "tts"

internal/services/vacuum.go

@@ -8,8 +8,7 @@ type Vacuum struct {
 	conn *connect.HAConnection
 }
 
-// Tell the vacuum cleaner to do a spot clean-up.
-// Takes an entityId.
+// Tell the vacuum cleaner to do a spot clean-up. Takes an entityId.
 func (v Vacuum) CleanSpot(entityId string) error {
 	req := NewBaseServiceRequest(entityId)
 	req.Domain = "vacuum"
@@ -18,8 +17,7 @@ func (v Vacuum) CleanSpot(entityId string) error {
 	return v.conn.WriteMessage(req)
 }
 
-// Locate the vacuum cleaner robot.
-// Takes an entityId.
+// Locate the vacuum cleaner robot. Takes an entityId.
 func (v Vacuum) Locate(entityId string) error {
 	req := NewBaseServiceRequest(entityId)
 	req.Domain = "vacuum"
@@ -28,8 +26,7 @@ func (v Vacuum) Locate(entityId string) error {
 	return v.conn.WriteMessage(req)
 }
 
-// Pause the cleaning task.
-// Takes an entityId.
+// Pause the cleaning task. Takes an entityId.
 func (v Vacuum) Pause(entityId string) error {
 	req := NewBaseServiceRequest(entityId)
 	req.Domain = "vacuum"
@@ -38,8 +35,7 @@ func (v Vacuum) Pause(entityId string) error {
 	return v.conn.WriteMessage(req)
 }
 
-// Tell the vacuum cleaner to return to its dock.
-// Takes an entityId.
+// Tell the vacuum cleaner to return to its dock. Takes an entityId.
 func (v Vacuum) ReturnToBase(entityId string) error {
 	req := NewBaseServiceRequest(entityId)
 	req.Domain = "vacuum"
@@ -48,8 +44,7 @@ func (v Vacuum) ReturnToBase(entityId string) error {
 	return v.conn.WriteMessage(req)
 }
 
-// Send a raw command to the vacuum cleaner. Takes an entityId and an optional
-// map that is translated into service_data.
+// Send a raw command to the vacuum cleaner. Takes an entityId and an optional map that is translated into service_data.
 func (v Vacuum) SendCommand(entityId string, serviceData ...map[string]any) error {
 	req := NewBaseServiceRequest(entityId)
 	req.Domain = "vacuum"
@@ -61,8 +56,7 @@ func (v Vacuum) SendCommand(entityId string, serviceData ...map[string]any) erro
 	return v.conn.WriteMessage(req)
 }
 
-// Set the fan speed of the vacuum cleaner. Takes an entityId and an optional
-// map that is translated into service_data.
+// Set the fan speed of the vacuum cleaner. Takes an entityId and an optional map that is translated into service_data.
 func (v Vacuum) SetFanSpeed(entityId string, serviceData ...map[string]any) error {
 	req := NewBaseServiceRequest(entityId)
 	req.Domain = "vacuum"
@@ -75,8 +69,7 @@ func (v Vacuum) SetFanSpeed(entityId string, serviceData ...map[string]any) erro
 	return v.conn.WriteMessage(req)
 }
 
-// Start or resume the cleaning task.
-// Takes an entityId.
+// Start or resume the cleaning task. Takes an entityId.
 func (v Vacuum) Start(entityId string) error {
 	req := NewBaseServiceRequest(entityId)
 	req.Domain = "vacuum"
@@ -85,8 +78,7 @@ func (v Vacuum) Start(entityId string) error {
 	return v.conn.WriteMessage(req)
 }
 
-// Start, pause, or resume the cleaning task.
-// Takes an entityId.
+// Start, pause, or resume the cleaning task. Takes an entityId.
 func (v Vacuum) StartPause(entityId string) error {
 	req := NewBaseServiceRequest(entityId)
 	req.Domain = "vacuum"
@@ -95,8 +87,7 @@ func (v Vacuum) StartPause(entityId string) error {
 	return v.conn.WriteMessage(req)
 }
 
-// Stop the current cleaning task.
-// Takes an entityId.
+// Stop the current cleaning task. Takes an entityId.
 func (v Vacuum) Stop(entityId string) error {
 	req := NewBaseServiceRequest(entityId)
 	req.Domain = "vacuum"
@@ -105,8 +96,7 @@ func (v Vacuum) Stop(entityId string) error {
 	return v.conn.WriteMessage(req)
 }
 
-// Stop the current cleaning task and return to home.
-// Takes an entityId.
+// Stop the current cleaning task and return to home. Takes an entityId.
 func (v Vacuum) TurnOff(entityId string) error {
 	req := NewBaseServiceRequest(entityId)
 	req.Domain = "vacuum"
@@ -115,8 +105,7 @@ func (v Vacuum) TurnOff(entityId string) error {
 	return v.conn.WriteMessage(req)
 }
 
-// Start a new cleaning task.
-// Takes an entityId.
+// Start a new cleaning task. Takes an entityId.
 func (v Vacuum) TurnOn(entityId string) error {
 	req := NewBaseServiceRequest(entityId)
 	req.Domain = "vacuum"

interval.go

@@ -79,20 +79,20 @@ func (ib intervalBuilder) Call(callback IntervalCallback) intervalBuilderCall {
 	return intervalBuilderCall(ib)
 }
 
-// Takes a DurationString ("2h", "5m", etc) to set the frequency of the interval.
+// Every takes a DurationString ("2h", "5m", etc.) to set the frequency of the interval.
 func (ib intervalBuilderCall) Every(s types.DurationString) intervalBuilderEnd {
 	d := internal.ParseDuration(string(s))
 	ib.interval.frequency = d
 	return intervalBuilderEnd(ib)
 }
 
-// Takes a TimeString ("HH:MM") when this interval will start running for the day.
+// StartingAt takes a TimeString ("HH:MM") when this interval will start running for the day.
 func (ib intervalBuilderEnd) StartingAt(s types.TimeString) intervalBuilderEnd {
 	ib.interval.startTime = s
 	return ib
 }
 
-// Takes a TimeString ("HH:MM") when this interval will stop running for the day.
+// EndingAt takes a TimeString ("HH:MM") when this interval will stop running for the day.
 func (ib intervalBuilderEnd) EndingAt(s types.TimeString) intervalBuilderEnd {
 	ib.interval.endTime = s
 	return ib
@@ -111,10 +111,8 @@ func (ib intervalBuilderEnd) ExceptionRange(start, end time.Time) intervalBuilde
 	return ib
 }
 
-/*
-Enable this interval only when the current state of {entityId} matches {state}.
-If there is a network error while retrieving state, the interval runs if {runOnNetworkError} is true.
-*/
+// Enable this interval only when the current state of {entityId} matches {state}.
+// If there is a network error while retrieving state, the interval runs if {runOnNetworkError} is true.
 func (ib intervalBuilderEnd) EnabledWhen(entityId, state string, runOnNetworkError bool) intervalBuilderEnd {
 	if entityId == "" {
 		panic(fmt.Sprintf("entityId is empty in EnabledWhen entityId='%s' state='%s'", entityId, state))
@@ -128,10 +126,8 @@ func (ib intervalBuilderEnd) EnabledWhen(entityId, state string, runOnNetworkErr
 	return ib
 }
 
-/*
-Disable this interval when the current state of {entityId} matches {state}.
-If there is a network error while retrieving state, the interval runs if {runOnNetworkError} is true.
-*/
+// Disable this interval when the current state of {entityId} matches {state}.
+// If there is a network error while retrieving state, the interval runs if {runOnNetworkError} is true.
 func (ib intervalBuilderEnd) DisabledWhen(entityId, state string, runOnNetworkError bool) intervalBuilderEnd {
 	if entityId == "" {
 		panic(fmt.Sprintf("entityId is empty in EnabledWhen entityId='%s' state='%s'", entityId, state))
@@ -188,10 +184,10 @@ func runIntervals(a *App) {
 }
 
 func (i Interval) maybeRunCallback(a *App) {
-	if c := CheckStartEndTime(i.startTime /* isStart = */, true); c.fail {
+	if c := CheckStartEndTime(i.startTime, true); c.fail {
 		return
 	}
-	if c := CheckStartEndTime(i.endTime /* isStart = */, false); c.fail {
+	if c := CheckStartEndTime(i.endTime, false); c.fail {
 		return
 	}
 	if c := CheckExceptionDates(i.exceptionDates); c.fail {

schedule.go

@@ -1,3 +1,6 @@
+// Package gomeassistant provides a Go library for creating Home Assistant automations
+// and schedules. This file contains the scheduling system that allows you to create
+// daily schedules with various conditions and callbacks.
 package gomeassistant
 
 import (
@@ -10,44 +13,67 @@ import (
 	"github.com/dromara/carbon/v2"
 )
 
+// ScheduleCallback is a function type that gets called when a schedule triggers.
+// It receives the service instance and current state as parameters.
 type ScheduleCallback func(*Service, State)
 
+// DailySchedule represents a recurring daily schedule with various conditions.
+// It can be configured to run at specific times, sunrise/sunset, or based on
+// entity states and date restrictions.
 type DailySchedule struct {
-	// 0-23
+	// Hour of the day (0-23) when the schedule should run
 	hour int
-	// 0-59
+	// Minute of the hour (0-59) when the schedule should run
 	minute int
 
-	callback    ScheduleCallback
+	// Function to call when the schedule triggers
+	callback ScheduleCallback
+	// Next time this schedule should run
 	nextRunTime time.Time
 
+	// If true, schedule runs at sunrise instead of fixed time
 	isSunrise bool
-	isSunset  bool
+	// If true, schedule runs at sunset instead of fixed time
+	isSunset bool
+	// Offset from sunrise/sunset (e.g., "-30m", "+1h")
 	sunOffset types.DurationString
 
+	// Dates when this schedule should NOT run
 	exceptionDates []time.Time
+	// Dates when this schedule is ONLY allowed to run (if empty, runs on all dates)
 	allowlistDates []time.Time
 
-	enabledEntities  []internal.EnabledDisabledInfo
+	// Entities that must be in specific states for this schedule to run
+	enabledEntities []internal.EnabledDisabledInfo
+	// Entities that must NOT be in specific states for this schedule to run
 	disabledEntities []internal.EnabledDisabledInfo
 }
 
+// Hash returns a unique string identifier for this schedule based on its
+// time and callback function.
 func (s DailySchedule) Hash() string {
 	return fmt.Sprint(s.hour, s.minute, s.callback)
 }
 
+// scheduleBuilder is used in the fluent API to build schedules step by step.
 type scheduleBuilder struct {
 	schedule DailySchedule
 }
 
+// scheduleBuilderCall represents the state after setting the callback function.
 type scheduleBuilderCall struct {
 	schedule DailySchedule
 }
 
+// scheduleBuilderEnd represents the final state where time and conditions are set.
 type scheduleBuilderEnd struct {
 	schedule DailySchedule
 }
 
+// NewDailySchedule creates a new schedule builder with default values.
+// Use the fluent API to configure the schedule:
+//
+//	NewDailySchedule().Call(myFunction).At("15:30").Build()
 func NewDailySchedule() scheduleBuilder {
 	return scheduleBuilder{
 		DailySchedule{
@@ -58,6 +84,7 @@ func NewDailySchedule() scheduleBuilder {
 	}
 }
 
+// String returns a human-readable representation of the schedule.
 func (s DailySchedule) String() string {
 	return fmt.Sprintf("Schedule{ call %q daily at %s }",
 		internal.GetFunctionName(s.callback),
@@ -65,16 +92,20 @@ func (s DailySchedule) String() string {
 	)
 }
 
+// stringHourMinute formats hour and minute as "HH:MM".
 func stringHourMinute(hour, minute int) string {
 	return fmt.Sprintf("%02d:%02d", hour, minute)
 }
 
+// Call sets the callback function that will be executed when the schedule triggers.
+// This is the first step in the fluent API chain.
 func (sb scheduleBuilder) Call(callback ScheduleCallback) scheduleBuilderCall {
 	sb.schedule.callback = callback
 	return scheduleBuilderCall(sb)
 }
 
-// At takes a string in 24hr format time like "15:30".
+// At sets the schedule to run at a specific time in 24-hour format.
+// Examples: "15:30", "09:00", "23:45"
 func (sb scheduleBuilderCall) At(s string) scheduleBuilderEnd {
 	t := internal.ParseTime(s)
 	sb.schedule.hour = t.Hour()
@@ -82,9 +113,13 @@ func (sb scheduleBuilderCall) At(s string) scheduleBuilderEnd {
 	return scheduleBuilderEnd(sb)
 }
 
-// Sunrise takes an optional duration string that is passed to time.ParseDuration.
-// Examples include "-1.5h", "30m", etc. See https://pkg.go.dev/time#ParseDuration
-// for full list.
+// Sunrise configures the schedule to run at sunrise with an optional offset.
+// The offset parameter is a duration string (e.g., "-30m", "+1h", "-1.5h").
+// Only the first offset, if provided, is considered.
+// Examples:
+//   - Sunrise() - runs at sunrise
+//   - Sunrise("-30m") - runs 30 minutes before sunrise
+//   - Sunrise("+1h") - runs 1 hour after sunrise
 func (sb scheduleBuilderCall) Sunrise(offset ...types.DurationString) scheduleBuilderEnd {
 	sb.schedule.isSunrise = true
 	if len(offset) > 0 {
@@ -93,9 +128,13 @@ func (sb scheduleBuilderCall) Sunrise(offset ...types.DurationString) scheduleBu
 	return scheduleBuilderEnd(sb)
 }
 
-// Sunset takes an optional duration string that is passed to time.ParseDuration.
-// Examples include "-1.5h", "30m", etc. See https://pkg.go.dev/time#ParseDuration
-// for full list.
+// Sunset configures the schedule to run at sunset with an optional offset.
+// The offset parameter is a duration string (e.g., "-30m", "+1h", "-1.5h").
+// Only the first offset, if provided, is considered.
+// Examples:
+//   - Sunset() - runs at sunset
+//   - Sunset("-30m") - runs 30 minutes before sunset
+//   - Sunset("+1h") - runs 1 hour after sunset
 func (sb scheduleBuilderCall) Sunset(offset ...types.DurationString) scheduleBuilderEnd {
 	sb.schedule.isSunset = true
 	if len(offset) > 0 {
@@ -104,20 +143,27 @@ func (sb scheduleBuilderCall) Sunset(offset ...types.DurationString) scheduleBui
 	return scheduleBuilderEnd(sb)
 }
 
+// ExceptionDates adds dates when this schedule should NOT run.
+// You can pass multiple dates: ExceptionDates(date1, date2, date3)
 func (sb scheduleBuilderEnd) ExceptionDates(t time.Time, tl ...time.Time) scheduleBuilderEnd {
 	sb.schedule.exceptionDates = append(tl, t)
 	return sb
 }
 
+// OnlyOnDates restricts the schedule to run ONLY on the specified dates.
+// If no dates are specified, the schedule runs on all dates.
+// You can pass multiple dates: OnlyOnDates(date1, date2, date3)
 func (sb scheduleBuilderEnd) OnlyOnDates(t time.Time, tl ...time.Time) scheduleBuilderEnd {
 	sb.schedule.allowlistDates = append(tl, t)
 	return sb
 }
 
-/*
-Enable this schedule only when the current state of {entityId} matches {state}.
-If there is a network error while retrieving state, the schedule runs if {runOnNetworkError} is true.
-*/
+// EnabledWhen makes this schedule only run when the specified entity is in the given state.
+// If there's a network error while checking the entity state, the schedule runs
+// only if runOnNetworkError is true.
+// Examples:
+//   - EnabledWhen("light.living_room", "on", true) - only run when light is on
+//   - EnabledWhen("sensor.motion", "detected", false) - only run when motion detected, fail on network error
 func (sb scheduleBuilderEnd) EnabledWhen(entityId, state string, runOnNetworkError bool) scheduleBuilderEnd {
 	if entityId == "" {
 		panic(fmt.Sprintf("entityId is empty in EnabledWhen entityId='%s' state='%s'", entityId, state))
@@ -131,10 +177,11 @@ func (sb scheduleBuilderEnd) EnabledWhen(entityId, state string, runOnNetworkErr
 	return sb
 }
 
-/*
-Disable this schedule when the current state of {entityId} matches {state}.
-If there is a network error while retrieving state, the schedule runs if {runOnNetworkError} is true.
-*/
+// DisabledWhen prevents this schedule from running when the specified entity is in the given state.
+// If there's a network error while checking the entity state, the schedule runs only if runOnNetworkError is true.
+// Examples:
+//   - DisabledWhen("light.living_room", "off", true) - don't run when light is off
+//   - DisabledWhen("sensor.motion", "detected", false) - don't run when motion detected, fail on network error
 func (sb scheduleBuilderEnd) DisabledWhen(entityId, state string, runOnNetworkError bool) scheduleBuilderEnd {
 	if entityId == "" {
 		panic(fmt.Sprintf("entityId is empty in EnabledWhen entityId='%s' state='%s'", entityId, state))
@@ -148,11 +195,15 @@ func (sb scheduleBuilderEnd) DisabledWhen(entityId, state string, runOnNetworkEr
 	return sb
 }
 
+// Build finalizes the schedule configuration and returns the DailySchedule.
+// This is the final step in the fluent API chain.
 func (sb scheduleBuilderEnd) Build() DailySchedule {
 	return sb.schedule
 }
 
-// app.Start() functions
+// runSchedules is the main goroutine that manages all schedules.
+// It continuously processes schedules, running them when their time comes
+// and requeuing them for the next day.
 func runSchedules(a *App) {
 	if a.schedules.Len() == 0 {
 		return
@@ -168,7 +219,7 @@ func runSchedules(a *App) {
 
 		sched := popSchedule(a)
 
-		// run callback for all schedules before now in case they overlap
+		// Run callback for all schedules that are overdue in case they overlap
 		for sched.nextRunTime.Before(time.Now()) {
 			sched.maybeRunCallback(a)
 			requeueSchedule(a, sched)
@@ -178,7 +229,7 @@ func runSchedules(a *App) {
 
 		slog.Info("Next schedule", "start_time", sched.nextRunTime)
 
-		// Use context-aware sleep
+		// Wait until the next schedule time or context cancellation
 		select {
 		case <-time.After(time.Until(sched.nextRunTime)):
 			// Time elapsed, continue
@@ -192,6 +243,13 @@ func runSchedules(a *App) {
 	}
 }
 
+// maybeRunCallback checks all conditions and runs the callback if they're all met.
+// Conditions checked:
+// 1. Exception dates (schedule should not run on these dates)
+// 2. Allowlist dates (schedule should only run on these dates)
+// 3. Enabled entities (required entity states)
+// 4. Disabled entities (forbidden entity states)
+// The callback runs in a goroutine to avoid blocking the scheduler.
 func (s DailySchedule) maybeRunCallback(a *App) {
 	if c := CheckExceptionDates(s.exceptionDates); c.fail {
 		return
@@ -208,15 +266,19 @@ func (s DailySchedule) maybeRunCallback(a *App) {
 	go s.callback(a.service, a.state)
 }
 
+// popSchedule removes and returns the next schedule from the priority queue.
 func popSchedule(a *App) DailySchedule {
 	_sched, _ := a.schedules.Get(1)
 	return _sched[0].(Item).Value.(DailySchedule)
 }
 
+// requeueSchedule calculates the next run time for a schedule and adds it back to the queue.
+// For sunrise/sunset schedules, it calculates the next sunrise/sunset time.
+// For fixed-time schedules, it adds one day to the current run time.
 func requeueSchedule(a *App, s DailySchedule) {
 	if s.isSunrise || s.isSunset {
 		var nextSunTime *carbon.Carbon
-		// "0s" is default value
+		// "0s" is the default value for no offset
 		if s.sunOffset != "0s" {
 			nextSunTime = getNextSunRiseOrSet(a, s.isSunrise, s.sunOffset)
 		} else {

state.go

@@ -81,7 +81,7 @@ func (s *StateImpl) Get(entityId string) (EntityState, error) {
 }
 
 // ListEntities returns a list of all entities in Home Assistant.
-// see rest documentation for more details: https://developers.home-assistant.io/docs/api/rest/#actions
+// See REST documentation for more details: https://developers.home-assistant.io/docs/api/rest/#actions
 func (s *StateImpl) ListEntities() ([]EntityState, error) {
 	resp, err := s.httpClient.GetStates()
 	if err != nil {
@@ -101,7 +101,7 @@ func (s *StateImpl) Equals(entityId string, expectedState string) (bool, error)
 }
 
 func (s *StateImpl) BeforeSunrise(offset ...types.DurationString) bool {
-	sunrise := getSunriseSunset(s /* sunrise = */, true, carbon.Now(), offset...)
+	sunrise := getSunriseSunset(s, true, carbon.Now(), offset...)
 	return carbon.Now().Lt(sunrise)
 }
 
@@ -110,7 +110,7 @@ func (s *StateImpl) AfterSunrise(offset ...types.DurationString) bool {
 }
 
 func (s *StateImpl) BeforeSunset(offset ...types.DurationString) bool {
-	sunset := getSunriseSunset(s /* sunrise = */, false, carbon.Now(), offset...)
+	sunset := getSunriseSunset(s, false, carbon.Now(), offset...)
 	return carbon.Now().Lt(sunset)
 }
 

types/app.go

@@ -7,7 +7,7 @@ type NewAppRequest struct {
 
 	// Optional
 	// Deprecated: use URL instead
-	// IpAddress of your Home Assistant instance i.e. "localhost"
+	// IpAddress of your Home Assistant instance, e.g. "localhost"
 	// or "192.168.86.59" etc.
 	IpAddress string
 
@@ -18,18 +18,18 @@ type NewAppRequest struct {
 
 	// Required
 	// Auth token generated in Home Assistant. Used
-	// to connect to the Websocket API.
+	// to connect to the WebSocket API.
 	HAAuthToken string
 
 	// Required
-	// EntityId of the zone representing your home e.g. "zone.home".
+	// EntityId of the zone representing your home, e.g. "zone.home".
 	// Used to pull latitude/longitude from Home Assistant
 	// to calculate sunset/sunrise times.
 	HomeZoneEntityId string
 
 	// Optional
-	// Whether to use secure connections for http and websockets.
-	// Setting this to `true` will use `https://` instead of `https://`
+	// Whether to use secure connections for HTTP and WebSockets.
+	// Setting this to `true` will use `https://` instead of `http://`
 	// and `wss://` instead of `ws://`.
 	Secure bool
 }