docker-compose.yml

@@ -136,6 +136,10 @@ services:
       MINIO_USE_SSL: "false"
       MINIO_BUCKET_CHAPTERS: "${MINIO_BUCKET_CHAPTERS:-libnovel-chapters}"
       MINIO_BUCKET_AUDIO: "${MINIO_BUCKET_AUDIO:-libnovel-audio}"
+      # Public endpoint used to sign presigned audio URLs so browsers can reach them.
+      # Leave empty to use MINIO_ENDPOINT (fine for local dev).
+      MINIO_PUBLIC_ENDPOINT: "${MINIO_PUBLIC_ENDPOINT:-}"
+      MINIO_PUBLIC_USE_SSL: "${MINIO_PUBLIC_USE_SSL:-true}"
       # PocketBase
       POCKETBASE_URL: "http://pocketbase:8090"
       POCKETBASE_ADMIN_EMAIL: "${POCKETBASE_ADMIN_EMAIL:-admin@libnovel.local}"

scraper/cmd/scraper/main.go

@@ -99,9 +99,11 @@ func run(log *slog.Logger) error {
 	// ── Storage backends ────────────────────────────────────────────────────
 	minioCfg := storage.MinioConfig{
 		Endpoint:       envOr("MINIO_ENDPOINT", "localhost:9000"),
+		PublicEndpoint: envOr("MINIO_PUBLIC_ENDPOINT", ""),
 		AccessKey:      envOr("MINIO_ACCESS_KEY", "admin"),
 		SecretKey:      envOr("MINIO_SECRET_KEY", "changeme123"),
 		UseSSL:         strings.ToLower(os.Getenv("MINIO_USE_SSL")) == "true",
+		PublicUseSSL:   strings.ToLower(os.Getenv("MINIO_PUBLIC_USE_SSL")) != "false",
 		BucketChapters: envOr("MINIO_BUCKET_CHAPTERS", "libnovel-chapters"),
 		BucketAudio:    envOr("MINIO_BUCKET_AUDIO", "libnovel-audio"),
 	}

scraper/internal/storage/minio.go

@@ -14,10 +14,12 @@ import (
 
 // MinioConfig holds connection parameters for MinIO.
 type MinioConfig struct {
-	Endpoint       string // e.g. "minio:9000"
+	Endpoint       string // e.g. "minio:9000" — internal address used for all operations
+	PublicEndpoint string // e.g. "minio.kalekber.cc" — used to sign presigned URLs so browsers can reach them; leave empty to use Endpoint
 	AccessKey      string
 	SecretKey      string
 	UseSSL         bool
+	PublicUseSSL   bool   // TLS for the public endpoint (usually true in prod)
 	BucketChapters string // e.g. "libnovel-chapters"
 	BucketAudio    string // e.g. "libnovel-audio"
 }
@@ -25,7 +27,8 @@ type MinioConfig struct {
 // MinioClient wraps a minio.Client and exposes object operations for
 // chapters and audio files.
 type MinioClient struct {
-	c   *minio.Client
+	c   *minio.Client // internal client — used for all read/write operations
+	pub *minio.Client // public client — used only for generating presigned URLs
 	cfg MinioConfig
 }
 
@@ -40,7 +43,21 @@ func NewMinioClient(ctx context.Context, cfg MinioConfig) (*MinioClient, error)
 		return nil, fmt.Errorf("minio: new client: %w", err)
 	}
 
-	mc := &MinioClient{c: c, cfg: cfg}
+	// Public client: signs presigned URLs with the public hostname so browsers
+	// can fetch them directly. Falls back to the internal client if no public
+	// endpoint is configured.
+	pub := c
+	if cfg.PublicEndpoint != "" && cfg.PublicEndpoint != cfg.Endpoint {
+		pub, err = minio.New(cfg.PublicEndpoint, &minio.Options{
+			Creds:  credentials.NewStaticV4(cfg.AccessKey, cfg.SecretKey, ""),
+			Secure: cfg.PublicUseSSL,
+		})
+		if err != nil {
+			return nil, fmt.Errorf("minio: new public client: %w", err)
+		}
+	}
+
+	mc := &MinioClient{c: c, pub: pub, cfg: cfg}
 	for _, bucket := range []string{cfg.BucketChapters, cfg.BucketAudio} {
 		if err := mc.ensureBucket(ctx, bucket); err != nil {
 			return nil, err
@@ -168,9 +185,8 @@ func (m *MinioClient) AudioExists(ctx context.Context, key string) bool {
 
 // ─── Presigned URLs ───────────────────────────────────────────────────────────
 
-// PresignChapter returns a presigned GET URL for a chapter object, valid for
-// the given duration. The URL is signed with the MinIO credentials and can be
-// fetched directly by the browser without authentication.
+// PresignChapter returns a presigned GET URL for a chapter object signed with
+// the internal endpoint — intended for server-side fetches only.
 func (m *MinioClient) PresignChapter(ctx context.Context, slug string, vol, n int, expires time.Duration) (string, error) {
 	key := chapterKey(slug, vol, n)
 	u, err := m.c.PresignedGetObject(ctx, m.cfg.BucketChapters, key, expires, nil)
@@ -180,9 +196,10 @@ func (m *MinioClient) PresignChapter(ctx context.Context, slug string, vol, n in
 	return u.String(), nil
 }
 
-// PresignAudio returns a presigned GET URL for an audio object.
+// PresignAudio returns a presigned GET URL for an audio object signed with
+// the public endpoint so the browser can fetch it directly.
 func (m *MinioClient) PresignAudio(ctx context.Context, key string, expires time.Duration) (string, error) {
-	u, err := m.c.PresignedGetObject(ctx, m.cfg.BucketAudio, key, expires, nil)
+	u, err := m.pub.PresignedGetObject(ctx, m.cfg.BucketAudio, key, expires, nil)
 	if err != nil {
 		return "", fmt.Errorf("minio: presign audio %s: %w", key, err)
 	}

ui/src/lib/server/minio.ts

@@ -90,5 +90,7 @@ export async function presignAudio(
 	}
 	const data = (await res.json()) as { url: string };
 	log.debug('minio', 'presign audio ok', { slug, n });
-	return rewriteHost(data.url);
+	// The scraper now signs audio URLs with the public endpoint directly,
+	// so no host rewrite is needed here.
+	return data.url;
 }