1package server
  2
  3import (
  4	"context"
  5	"io/fs"
  6	"net/http"
  7	"strings"
  8
  9	"github.com/mjensen/weimar/internal/api"
 10	"github.com/mjensen/weimar/internal/auth"
 11	"github.com/mjensen/weimar/internal/config"
 12	"github.com/mjensen/weimar/internal/db"
 13	"github.com/mjensen/weimar/internal/storage"
 14)
 15
 16func New(cfg config.Config, webFS fs.FS, database *db.DB) (*Server, error) {
 17	sm := auth.NewSessionManager(database)
 18	st, err := storage.New(cfg.Storage.Path)
 19	if err != nil {
 20		return nil, err
 21	}
 22	h := api.New(database, sm, st, cfg)
 23
 24	mux := http.NewServeMux()
 25
 26	// Health check (public).
 27	mux.HandleFunc("GET /api/health", handleHealth)
 28
 29	s := &Server{
 30		cfg:  cfg,
 31		mux:  mux,
 32		auth: sm,
 33	}
 34
 35	// Auth (public).
 36	mux.HandleFunc("POST /api/auth/login", h.HandleLogin)
 37	mux.HandleFunc("POST /api/auth/register", h.HandleRegister)
 38
 39	// Auth (authenticated).
 40	mux.HandleFunc("POST /api/auth/logout", s.requireAuth(h.HandleLogout))
 41
 42	// Images (authenticated).
 43	mux.HandleFunc("POST /api/upload", s.requireAuth(h.HandleUpload))
 44	mux.HandleFunc("GET /api/images", s.requireAuth(h.HandleListImages))
 45	mux.HandleFunc("GET /api/images/{id}", s.requireAuth(h.HandleGetImage))
 46	mux.HandleFunc("GET /api/images/{id}/download", s.requireAuth(h.HandleDownload))
 47	mux.HandleFunc("GET /api/images/{id}/thumbnail", s.requireAuth(h.HandleThumbnail))
 48
 49	// Tags (authenticated).
 50	mux.HandleFunc("GET /api/tags/suggest", s.requireAuth(h.HandleTagSuggest))
 51
 52	// Users (authenticated).
 53	mux.HandleFunc("GET /api/users/me", s.requireAuth(h.HandleGetMe))
 54	mux.HandleFunc("POST /api/users/me/avatar", s.requireAuth(h.HandleUploadAvatar))
 55	mux.HandleFunc("GET /api/users/{id}/avatar", s.requireAuth(h.HandleServeAvatar))
 56
 57	// SPA — serve index.html for all non-API routes (client-side routing).
 58	mux.Handle("/", s.spaHandler(webFS))
 59
 60	return s, nil
 61}
 62
 63type Server struct {
 64	cfg  config.Config
 65	mux  *http.ServeMux
 66	auth *auth.SessionManager
 67}
 68
 69func (s *Server) Start(ctx context.Context) error {
 70	addr := s.cfg.Server.Host + ":" + itoa(s.cfg.Server.Port)
 71	srv := &http.Server{Addr: addr, Handler: s.mux}
 72
 73	go func() {
 74		<-ctx.Done()
 75		srv.Shutdown(context.Background())
 76	}()
 77
 78	return srv.ListenAndServe()
 79}
 80
 81func itoa(n int) string {
 82	if n == 0 {
 83		return "0"
 84	}
 85	var buf [20]byte
 86	i := len(buf)
 87	for n > 0 {
 88		i--
 89		buf[i] = byte('0' + n%10)
 90		n /= 10
 91	}
 92	return string(buf[i:])
 93}
 94
 95// spaHandler serves static files for SPA client-side routing.
 96// For routes that don't match an existing file (e.g. /browse, /image/123),
 97// it falls back to serving index.html so the SPA router can handle them.
 98func (s *Server) spaHandler(webFS fs.FS) http.HandlerFunc {
 99	fsHandler := http.FileServer(http.FS(webFS))
100	return func(w http.ResponseWriter, r *http.Request) {
101		// API routes should not be served by the SPA handler.
102		if strings.HasPrefix(r.URL.Path, "/api/") {
103			http.NotFound(w, r)
104			return
105		}
106
107		// Check if the requested file exists in the embedded FS.
108		path := strings.TrimPrefix(r.URL.Path, "/")
109		if _, err := fs.Stat(webFS, path); err != nil {
110			// File doesn't exist — serve index.html for SPA routing.
111			r.URL.Path = "/"
112			fsHandler.ServeHTTP(w, r)
113			return
114		}
115
116		// File exists — serve it directly.
117		fsHandler.ServeHTTP(w, r)
118	}
119}
120
121func handleHealth(w http.ResponseWriter, r *http.Request) {
122	w.Header().Set("Content-Type", "application/json")
123	w.Write([]byte(`{"status":"ok"}`))
124}