More work on Shares

server/public/handle_images.go

@@ -0,0 +1,53 @@
+package public
+
+import (
+	"context"
+	"errors"
+	"io"
+	"net/http"
+	"time"
+
+	"github.com/navidrome/navidrome/log"
+	"github.com/navidrome/navidrome/model"
+	"github.com/navidrome/navidrome/utils"
+)
+
+func (p *Router) handleImages(w http.ResponseWriter, r *http.Request) {
+	ctx, cancel := context.WithTimeout(r.Context(), 10*time.Second)
+	defer cancel()
+	id := r.URL.Query().Get(":id")
+	if id == "" {
+		http.Error(w, "invalid id", http.StatusBadRequest)
+		return
+	}
+
+	artId, err := DecodeArtworkID(id)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusBadRequest)
+		return
+	}
+
+	size := utils.ParamInt(r, "size", 0)
+	imgReader, lastUpdate, err := p.artwork.Get(ctx, artId.String(), size)
+
+	switch {
+	case errors.Is(err, context.Canceled):
+		return
+	case errors.Is(err, model.ErrNotFound):
+		log.Error(r, "Couldn't find coverArt", "id", id, err)
+		http.Error(w, "Artwork not found", http.StatusNotFound)
+		return
+	case err != nil:
+		log.Error(r, "Error retrieving coverArt", "id", id, err)
+		http.Error(w, "Error retrieving coverArt", http.StatusInternalServerError)
+		return
+	}
+
+	defer imgReader.Close()
+	w.Header().Set("Cache-Control", "public, max-age=315360000")
+	w.Header().Set("Last-Modified", lastUpdate.Format(time.RFC1123))
+	cnt, err := io.Copy(w, imgReader)
+	if err != nil {
+		log.Warn(ctx, "Error sending image", "count", cnt, err)
+	}
+}