feat: add workflows for testing, linting, compiling

.github/workflows/ci.yml

@@ -0,0 +1,121 @@
+name: CI
+
+on:
+  push:
+    branches: [master, develop]
+  pull_request:
+    branches: [master, develop]
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  clippy:
+    name: Clippy
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install Rust
+        uses: dtolnay/rust-toolchain@stable
+        with:
+          components: clippy
+
+      - name: Cache cargo registry
+        uses: actions/cache@v4
+        with:
+          path: ~/.cargo/registry
+          key: ${{ runner.os }}-cargo-registry-${{ hashFiles('**/Cargo.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-cargo-registry-
+
+      - name: Cache cargo index
+        uses: actions/cache@v4
+        with:
+          path: ~/.cargo/git
+          key: ${{ runner.os }}-cargo-index-${{ hashFiles('**/Cargo.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-cargo-index-
+
+      - name: Cache cargo build
+        uses: actions/cache@v4
+        with:
+          path: target
+          key: ${{ runner.os }}-cargo-build-target-${{ hashFiles('**/Cargo.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-cargo-build-target-
+
+      - name: Run clippy
+        run: cargo clippy --all-targets --all-features -- -D warnings
+
+  test:
+    name: Test
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install Rust
+        uses: dtolnay/rust-toolchain@stable
+
+      - name: Cache cargo registry
+        uses: actions/cache@v4
+        with:
+          path: ~/.cargo/registry
+          key: ${{ runner.os }}-cargo-registry-${{ hashFiles('**/Cargo.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-cargo-registry-
+
+      - name: Cache cargo index
+        uses: actions/cache@v4
+        with:
+          path: ~/.cargo/git
+          key: ${{ runner.os }}-cargo-index-${{ hashFiles('**/Cargo.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-cargo-index-
+
+      - name: Cache cargo build
+        uses: actions/cache@v4
+        with:
+          path: target
+          key: ${{ runner.os }}-cargo-build-target-${{ hashFiles('**/Cargo.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-cargo-build-target-
+
+      - name: Run tests
+        run: cargo test --verbose
+
+  build:
+    name: Build (Linux Debug)
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install Rust
+        uses: dtolnay/rust-toolchain@stable
+
+      - name: Cache cargo registry
+        uses: actions/cache@v4
+        with:
+          path: ~/.cargo/registry
+          key: ${{ runner.os }}-cargo-registry-${{ hashFiles('**/Cargo.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-cargo-registry-
+
+      - name: Cache cargo index
+        uses: actions/cache@v4
+        with:
+          path: ~/.cargo/git
+          key: ${{ runner.os }}-cargo-index-${{ hashFiles('**/Cargo.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-cargo-index-
+
+      - name: Cache cargo build
+        uses: actions/cache@v4
+        with:
+          path: target
+          key: ${{ runner.os }}-cargo-build-target-${{ hashFiles('**/Cargo.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-cargo-build-target-
+
+      - name: Build project
+        run: cargo build --verbose

.github/workflows/format.yml

@@ -0,0 +1,22 @@
+name: Format Check
+
+on:
+  push:
+    branches: [master, develop]
+  pull_request:
+    branches: [master, develop]
+
+jobs:
+  format:
+    name: Format Check
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install Rust
+        uses: dtolnay/rust-toolchain@stable
+        with:
+          components: rustfmt
+
+      - name: Check formatting
+        run: cargo fmt --all -- --check

src/main.rs

@@ -1,8 +1,8 @@
 use std::net::SocketAddr;
 
 use crate::routes::{
-    absolute_handler, fallback_handler, favicon_handler, implicit_handler, index_handler,
-    relative_handler,
+    absolute_handler, fallback_handler, favicon_handler, favicon_png_handler, implicit_handler,
+    index_handler, relative_handler,
 };
 use axum::{http::HeaderValue, response::Response, routing::get, Router};
 use config::Configuration;
@@ -36,6 +36,7 @@ async fn main() {
     let app = Router::new()
         .route("/", get(index_handler))
         .route("/favicon.ico", get(favicon_handler))
+        .route("/favicon.png", get(favicon_png_handler))
         .route("/{path}", get(implicit_handler))
         .route("/rel/{path}", get(relative_handler))
         .route("/relative/{path}", get(relative_handler))

src/routes.rs

@@ -83,6 +83,27 @@ pub async fn favicon_handler(ConnectInfo(addr): ConnectInfo<SocketAddr>) -> impl
     }
 }
 
+/// Handles `/favicon.png` - generates a dynamic clock favicon showing the current time.
+///
+/// Logs the client IP address and returns a PNG image of an analog clock.
+pub async fn favicon_png_handler(ConnectInfo(addr): ConnectInfo<SocketAddr>) -> impl IntoResponse {
+    let now = chrono::Utc::now();
+
+    // Log the IP address for the favicon request
+    tracing::info!("Favicon PNG request from IP: {}", addr.ip());
+
+    // Generate PNG bytes directly
+    match generate_favicon_png_bytes(now) {
+        Ok(png_bytes) => (
+            StatusCode::OK,
+            [(header::CONTENT_TYPE, "image/png")],
+            png_bytes,
+        )
+            .into_response(),
+        Err(e) => get_error_response(e).into_response(),
+    }
+}
+
 /// Fallback handler for unmatched routes.
 pub async fn fallback_handler() -> impl IntoResponse {
     get_error_response(TimeBannerError::NotFound).into_response()