108 lines
3 KiB
Go
108 lines
3 KiB
Go
// NextNVR v0.1.0 — HTTP server and routing
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// Serves the embedded SPA and API endpoints.
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package main
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import (
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"embed"
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"encoding/json"
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"io/fs"
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"log"
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"net/http"
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"strings"
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)
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//go:embed public/*
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var publicFiles embed.FS
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// Server wraps the HTTP server and application state.
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type Server struct {
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config Config
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http *http.Server
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mux *http.ServeMux
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appConfig *Config // mutable config reference for hot-reload
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}
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// NewServer creates and configures the HTTP server.
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func NewServer(cfg Config) (*Server, error) {
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s := &Server{
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config: cfg,
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appConfig: &cfg,
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mux: http.NewServeMux(),
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}
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s.registerRoutes()
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s.http = &http.Server{
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Addr: cfg.Server.BindHost + cfg.Server.Port,
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Handler: s.middleware(s.mux),
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}
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return s, nil
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}
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// ListenAndServe starts the HTTP server.
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func (s *Server) ListenAndServe() error {
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log.Printf("HTTP server listening on %s", s.http.Addr)
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return s.http.ListenAndServe()
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}
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// Close shuts down the HTTP server.
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func (s *Server) Close() {
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if s.http != nil {
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s.http.Close()
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}
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}
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// registerRoutes sets up all API and static file routes.
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func (s *Server) registerRoutes() {
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// API endpoints.
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s.mux.HandleFunc("/api/cameras", s.handleCameras)
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s.mux.HandleFunc("/api/cameras/", s.handleCameraByID)
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s.mux.HandleFunc("/api/config", s.handleConfig)
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s.mux.HandleFunc("/api/scan", s.handleScan)
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s.mux.HandleFunc("/api/status", s.handleStatus)
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s.mux.HandleFunc("/api/recordings", s.handleRecordings)
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// Live MJPEG stream proxy — proxied through NextNVR to avoid cross-origin issues.
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s.mux.HandleFunc("/stream/", s.handleStream)
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// Static file server for recordings (actual video files on disk).
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s.mux.Handle("/recordings/", http.StripPrefix("/recordings/",
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http.FileServer(http.Dir(s.config.Storage.RecordingsPath))))
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// Static file server for embedded SPA.
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publicFS, _ := fs.Sub(publicFiles, "public")
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s.mux.Handle("/", http.FileServer(http.FS(publicFS)))
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}
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// middleware wraps handlers with CORS, no-cache, and logging.
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func (s *Server) middleware(next http.Handler) http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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w.Header().Set("Access-Control-Allow-Origin", "*")
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w.Header().Set("Access-Control-Allow-Methods", "GET, POST, PUT, DELETE, OPTIONS")
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w.Header().Set("Access-Control-Allow-Headers", "Content-Type")
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// Prevent caching of static files during development.
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w.Header().Set("Cache-Control", "no-cache, no-store, must-revalidate")
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w.Header().Set("Pragma", "no-cache")
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w.Header().Set("Expires", "0")
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if r.Method == "OPTIONS" {
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w.WriteHeader(http.StatusOK)
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return
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}
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// API logging.
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if strings.HasPrefix(r.URL.Path, "/api/") {
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log.Printf("%s %s", r.Method, r.URL.Path)
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}
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next.ServeHTTP(w, r)
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})
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}
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// jsonResponse writes a JSON response with the given status code.
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func jsonResponse(w http.ResponseWriter, status int, resp APIResponse) {
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w.Header().Set("Content-Type", "application/json")
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w.WriteHeader(status)
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json.NewEncoder(w).Encode(resp)
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}
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