modifications in ui for audio recording display and some backend fixes

server/internal/handlers/records.go

@@ -1,8 +1,8 @@
 package handlers
 
 import (
-	"context"
 	"fmt"
+	"io"
 	"mime/multipart"
 	"net/http"
 	"path"
@@ -111,13 +111,35 @@ func (h *RecordsHandler) File(c *gin.Context) {
 	id, _ := strconv.Atoi(c.Param("id"))
 	var rec models.Record
 	if err := h.db.First(&rec, id).Error; err != nil {
-		c.JSON(http.StatusNotFound, gin.H{"error": "not found"})
+		c.Status(http.StatusNotFound)
 		return
 	}
-	u, err := h.minio.PresignedGetObject(context.Background(), h.recordsBucket, rec.ObjectKey, h.presignTTL, nil)
+	// Stream from MinIO to the client to avoid redirecting to an internal host like "minio".
+	obj, err := h.minio.GetObject(c.Request.Context(), h.recordsBucket, rec.ObjectKey, minio.GetObjectOptions{})
 	if err != nil {
-		c.JSON(http.StatusInternalServerError, gin.H{"error": "presign failed"})
+		c.Status(http.StatusInternalServerError)
 		return
 	}
-	c.Redirect(http.StatusFound, u.String())
+	defer obj.Close()
+
+	info, err := h.minio.StatObject(c.Request.Context(), h.recordsBucket, rec.ObjectKey, minio.StatObjectOptions{})
+	if err != nil {
+		c.Status(http.StatusInternalServerError)
+		return
+	}
+
+	if ct := info.ContentType; ct != "" {
+		c.Header("Content-Type", ct)
+	} else {
+		c.Header("Content-Type", "application/octet-stream")
+	}
+	if info.Size >= 0 {
+		c.Header("Content-Length", strconv.FormatInt(info.Size, 10))
+	}
+	if filename := path.Base(rec.ObjectKey); filename != "" {
+		c.Header("Content-Disposition", fmt.Sprintf("inline; filename=%q", filename))
+	}
+
+	c.Status(http.StatusOK)
+	_, _ = io.Copy(c.Writer, obj)
 }