Initial commit: sheepflix media streaming API

Go API for browsing/searching media files with ffprobe metadata,
token auth, and go-transcode integration for HLS streaming.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

internal/api/api.go

@@ -0,0 +1,137 @@
+package api
+
+import (
+	"encoding/json"
+	"net/http"
+	"strconv"
+	"strings"
+
+	"sheepflix/internal/library"
+	"sheepflix/internal/probe"
+
+	"github.com/go-chi/chi/v5"
+	"github.com/go-chi/chi/v5/middleware"
+)
+
+const authToken = "i-am-pepper"
+
+func NewRouter(lib *library.Library) http.Handler {
+	r := chi.NewRouter()
+	r.Use(middleware.Logger)
+	r.Use(middleware.Recoverer)
+	r.Use(authMiddleware)
+
+	r.Get("/api/health", healthHandler)
+	r.Get("/api/library", listHandler(lib))
+	r.Get("/api/library/{id}", detailHandler(lib))
+	r.Get("/api/search", searchHandler(lib))
+	r.Get("/api/rescan", rescanHandler(lib))
+
+	return r
+}
+
+func authMiddleware(next http.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		// Accept token from Authorization header or ?token= query param
+		token := r.Header.Get("Authorization")
+		if token == "" {
+			token = r.URL.Query().Get("token")
+		} else {
+			// Strip "Bearer " prefix if present
+			token = strings.TrimPrefix(token, "Bearer ")
+		}
+
+		if token != authToken {
+			http.Error(w, "unauthorized", http.StatusUnauthorized)
+			return
+		}
+
+		w.Header().Set("Access-Control-Allow-Origin", "*")
+		w.Header().Set("Access-Control-Allow-Methods", "GET, OPTIONS")
+		w.Header().Set("Access-Control-Allow-Headers", "Content-Type, Authorization")
+		if r.Method == "OPTIONS" {
+			w.WriteHeader(http.StatusNoContent)
+			return
+		}
+		next.ServeHTTP(w, r)
+	})
+}
+
+func writeJSON(w http.ResponseWriter, status int, v any) {
+	w.Header().Set("Content-Type", "application/json")
+	w.WriteHeader(status)
+	json.NewEncoder(w).Encode(v)
+}
+
+func healthHandler(w http.ResponseWriter, r *http.Request) {
+	writeJSON(w, http.StatusOK, map[string]string{"status": "ok"})
+}
+
+func listHandler(lib *library.Library) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		sortBy := r.URL.Query().Get("sort")
+		if sortBy == "" {
+			sortBy = "name"
+		}
+
+		offset, _ := strconv.Atoi(r.URL.Query().Get("offset"))
+		limit, _ := strconv.Atoi(r.URL.Query().Get("limit"))
+		if limit <= 0 || limit > 500 {
+			limit = 50
+		}
+
+		items, total := lib.List(sortBy, offset, limit)
+		writeJSON(w, http.StatusOK, map[string]any{
+			"items": items,
+			"total": total,
+		})
+	}
+}
+
+func detailHandler(lib *library.Library) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		id := chi.URLParam(r, "id")
+		item, fullPath, ok := lib.Get(id)
+		if !ok {
+			writeJSON(w, http.StatusNotFound, map[string]string{"error": "not found"})
+			return
+		}
+
+		probeResult, err := probe.Run(fullPath)
+		if err != nil {
+			writeJSON(w, http.StatusOK, map[string]any{
+				"item":       item,
+				"probe":      nil,
+				"probe_error": err.Error(),
+			})
+			return
+		}
+
+		writeJSON(w, http.StatusOK, map[string]any{
+			"item":  item,
+			"probe": probeResult,
+		})
+	}
+}
+
+func searchHandler(lib *library.Library) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		q := r.URL.Query().Get("q")
+		if q == "" {
+			writeJSON(w, http.StatusBadRequest, map[string]string{"error": "missing q parameter"})
+			return
+		}
+		results := lib.Search(q)
+		writeJSON(w, http.StatusOK, map[string]any{
+			"items": results,
+			"total": len(results),
+		})
+	}
+}
+
+func rescanHandler(lib *library.Library) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		go lib.Scan()
+		writeJSON(w, http.StatusOK, map[string]string{"status": "rescan started"})
+	}
+}