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package api
import (
"encoding/json"
"errors"
"fmt"
"io"
"log/slog"
"net/http"
"strconv"
"codeberg.org/snonux/player/internal/model"
"codeberg.org/snonux/player/internal/service"
)
// ------------------------------------------------------------------
// Helpers
// ------------------------------------------------------------------
func writeJSON(w http.ResponseWriter, status int, data interface{}) {
w.Header().Set("Content-Type", "application/json")
w.WriteHeader(status)
if err := json.NewEncoder(w).Encode(data); err != nil {
slog.Error("encode json", "err", err)
}
}
func writeError(w http.ResponseWriter, status int, message string) {
writeJSON(w, status, map[string]string{"error": message})
}
func badRequest(w http.ResponseWriter, message string) {
writeError(w, http.StatusBadRequest, message)
}
func notFound(w http.ResponseWriter) {
writeError(w, http.StatusNotFound, "not found")
}
func forbidden(w http.ResponseWriter, message string) {
writeError(w, http.StatusForbidden, message)
}
// handleError maps service sentinel errors to the appropriate HTTP status
// and writes a JSON error response. It falls back to 500 for unknown errors.
func handleError(w http.ResponseWriter, err error) {
switch {
case errors.Is(err, service.ErrNotFound),
errors.Is(err, service.ErrShareNotFound),
errors.Is(err, service.ErrMediaNotFound):
notFound(w)
case errors.Is(err, service.ErrForbidden):
forbidden(w, "forbidden")
case errors.Is(err, service.ErrAlreadyBootstrapped):
forbidden(w, "bootstrap already complete")
case errors.Is(err, service.ErrInvalidCredentials):
writeJSON(w, http.StatusUnauthorized, map[string]string{"error": "invalid credentials"})
case errors.Is(err, service.ErrUnsupportedExtension),
errors.Is(err, service.ErrInvalidFeed):
badRequest(w, err.Error())
default:
writeJSON(w, http.StatusInternalServerError, map[string]string{"error": err.Error()})
}
}
func readJSON(r *http.Request, dst interface{}) error {
if r.Body == nil {
return errors.New("missing body")
}
defer r.Body.Close()
return json.NewDecoder(r.Body).Decode(dst)
}
func pathID(r *http.Request, name string) int64 {
id, _ := strconv.ParseInt(r.PathValue(name), 10, 64)
return id
}
func userIDFromContext(r *http.Request) int64 {
sess, _ := r.Context().Value(sessionCtxKey).(*model.Session)
if sess == nil {
return 0
}
return sess.UserID
}
func sessionIDFromContext(r *http.Request) string {
sess, _ := r.Context().Value(sessionCtxKey).(*model.Session)
if sess == nil {
return ""
}
return sess.ID
}
func stringPtr(s string) *string { return &s }
func floatPtr(f float64) *float64 { return &f }
func intPtr(i int64) *int64 { return &i }
func requireService(w http.ResponseWriter, svc any) bool {
if svc == nil {
writeJSON(w, http.StatusNotImplemented, map[string]string{"error": "not implemented"})
return false
}
return true
}
// ------------------------------------------------------------------
// Static pages
// ------------------------------------------------------------------
func (s *Server) serveFile(w http.ResponseWriter, r *http.Request, filename string) {
f, err := s.staticFS.Open(filename)
if err != nil {
http.Error(w, "not found", http.StatusNotFound)
return
}
defer f.Close()
stat, err := f.Stat()
if err != nil {
http.Error(w, "not found", http.StatusNotFound)
return
}
rs, ok := f.(io.ReadSeeker)
if !ok {
http.Error(w, "internal error", http.StatusInternalServerError)
return
}
http.ServeContent(w, r, filename, stat.ModTime(), rs)
}
func (s *Server) serveIndex(w http.ResponseWriter, r *http.Request) {
s.serveFile(w, r, "index.html")
}
func (s *Server) serveLogin(w http.ResponseWriter, r *http.Request) {
s.serveFile(w, r, "login.html")
}
func (s *Server) serveBootstrap(w http.ResponseWriter, r *http.Request) {
s.serveFile(w, r, "bootstrap.html")
}
func (s *Server) serveDetach(w http.ResponseWriter, r *http.Request) {
s.serveFile(w, r, "detach.html")
}
// ------------------------------------------------------------------
// File serving helpers
// ------------------------------------------------------------------
func (s *Server) serveFileResult(w http.ResponseWriter, r *http.Request, res *service.FileResult, attachment bool) {
streamer := s.streamer
if streamer == nil {
streamer = service.NewMediaStreamer(nil)
}
stream, err := streamer.Open(r.Context(), res, attachment)
if err != nil {
s.logger.Warn("api stream open failed", "file", res.FileName, "err", err)
http.Error(w, "not found", http.StatusNotFound)
return
}
defer stream.File.Close()
if stream.Remuxed {
s.serveRemuxed(w, r, streamer, stream)
return
}
if attachment {
disp := fmt.Sprintf("attachment; filename=%q", res.FileName)
w.Header().Set("Content-Disposition", disp)
}
w.Header().Set("Content-Type", stream.ContentType)
w.Header().Set("Accept-Ranges", "bytes")
s.logger.Info("api stream file", "file", stream.FileName, "size", stream.Size, "range", r.Header.Get("Range"))
http.ServeContent(w, r, stream.FileName, stream.ModTime, stream.File)
}
func (s *Server) serveRemuxed(w http.ResponseWriter, r *http.Request, streamer service.MediaStreamer, stream *service.StreamResult) {
w.Header().Set("Content-Type", stream.ContentType)
w.Header().Set("Cache-Control", "no-store")
if stream.Duration > 0 {
w.Header().Set("X-Duration", fmt.Sprintf("%f", stream.Duration))
}
s.logger.Info("api remux stream file", "file", stream.FileName, "size", stream.Size, "range", r.Header.Get("Range"))
if err := streamer.Remux(r.Context(), stream, w); err != nil {
s.logger.Error("remux media", "file", stream.FileName, "err", err)
}
}
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