mirror of
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125 lines
3.2 KiB
Go
125 lines
3.2 KiB
Go
package main
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import (
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"strconv"
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"strings"
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"time"
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"github.com/samber/lo"
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)
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type Query struct {
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Subject *string
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Title *string
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Keywords *[]string
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OpenOnly *bool
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TermPart *[]string // e.g. [1, B6, 8, J]
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Campus *[]string // e.g. [9, 1DT, 1LR]
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InstructionalMethod *[]string // e.g. [HB]
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Attributes *[]string // e.g. [060, 010]
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Instructor *[]uint64 // e.g. [27957, 27961]
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StartTime *time.Duration
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EndTime *time.Duration
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CreditHours *Range
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CourseNumberRange *Range
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}
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type Range struct {
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Low int
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High int
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}
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// FormatTimeParameter formats a time.Duration into a tuple of strings
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// This is mostly a private helper to keep the parameter formatting for both the start and end time consistent together
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func FormatTimeParameter(d time.Duration) (string, string, string) {
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hourParameter, minuteParameter, meridiemParameter := "", "", ""
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hours := int64(d.Hours())
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minutes := int64(d.Minutes()) % 60
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minuteParameter = strconv.FormatInt(minutes, 10)
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if hours >= 12 {
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hourParameter = "PM"
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// Exceptional case: 12PM = 12, 1PM = 1, 2PM = 2
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if hours >= 13 {
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hourParameter = strconv.FormatInt(hours - 12, 10) // 13 - 12 = 1, 14 - 12 = 2
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} else {
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hourParameter = strconv.FormatInt(hours, 10)
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}
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} else {
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meridiemParameter = "AM"
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hourParameter = strconv.FormatInt(hours, 10)
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}
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return hourParameter, minuteParameter, meridiemParameter
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}
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// Paramify converts a Query into a map of parameters that can be used in a POST request
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// This function assumes each query key only appears once.
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func (q *Query) Paramify() map[string]string {
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params := map[string]string{}
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if q.Subject != nil {
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params["txt_subject"] = *q.Subject
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}
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if q.Title != nil {
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// Whitespace can prevent valid queries from succeeding
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params["txt_title"] = strings.TrimSpace(*q.Title)
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}
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if q.Keywords != nil {
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params["txt_keyword"] = strings.Join(*q.Keywords, " ")
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}
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if q.OpenOnly != nil {
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params["chk_open_only"] = "true"
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}
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if q.TermPart != nil {
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params["txt_partOfTerm"] = strings.Join(*q.TermPart, ",")
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}
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if q.Campus != nil {
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params["txt_campus"] = strings.Join(*q.Campus, ",")
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}
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if q.Attributes != nil {
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params["txt_attribute"] = strings.Join(*q.Attributes, ",")
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}
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if q.Instructor != nil {
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params["txt_instructor"] = strings.Join(lo.Map(*q.Instructor, func(i uint64, _ int) string {
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return strconv.FormatUint(i, 10)
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}), ",")
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}
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if q.StartTime != nil {
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hour, minute, meridiem := FormatTimeParameter(*q.StartTime)
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params["select_start_hour"] = hour
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params["select_start_min"] = minute
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params["select_start_ampm"] = meridiem
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}
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if q.EndTime != nil {
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hour, minute, meridiem := FormatTimeParameter(*q.EndTime)
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params["select_end_hour"] = hour
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params["select_end_min"] = minute
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params["select_end_ampm"] = meridiem
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}
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if q.CreditHours != nil {
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params["txt_credithourlow"] = strconv.Itoa(q.CreditHours.Low)
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params["txt_credithourhigh"] = strconv.Itoa(q.CreditHours.High)
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}
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if q.CourseNumberRange != nil {
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params["txt_course_number_range"] = strconv.Itoa(q.CourseNumberRange.Low)
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params["txt_course_number_range_to"] = strconv.Itoa(q.CourseNumberRange.High)
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}
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return params
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}
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