feat: configuration parameters for minio host, port, timeout;

refactor: renamed buckets;
fix: corrected Host header changing behavior in minio gin endpoint;
feat: function to convert local minio url to /s3/ path url with the backend host

backend/internal/minioClient/buckets.go

@@ -31,9 +31,9 @@ var Buckets map[string]string
 func setupBuckets(client *minio.Client) {
 
 	Buckets = map[string]string{
-		"avatars": "avatars",
-		"images": "images",
-		"uploads": "uploads",
+		"avatars": "ew-avatars",
+		"images": "ew-images",
+		"uploads": "ew-uploads",
 	}
 
 	hiddenBuckets := []string{

backend/internal/minioClient/ginEndpoint.go

@@ -18,21 +18,28 @@
 package minioclient
 
 import (
+	"easywish/config"
+	"fmt"
 	"io"
+	"maps"
 	"net/http"
 	"net/url"
 	"time"
-	"maps"
+
 	"github.com/gin-gonic/gin"
 )
 
 func setupGinEndpoint(router *gin.Engine) {
+
+	cfg := config.GetConfig()
+	minioHost := fmt.Sprintf("%s:%d", cfg.MinioHost, cfg.MinioPort)
+
 	s3group := router.Group("/s3")
 	s3group.Any("/*path", func(c *gin.Context) {
 		path := c.Param("path")
 		minioURL := &url.URL{
 			Scheme:   "http",
-			Host:     "minio:9000", // XXX: hardcoded minio host
+			Host:     minioHost, 
 			Path:     path,
 			RawQuery: c.Request.URL.RawQuery,
 		}
@@ -42,9 +49,9 @@ func setupGinEndpoint(router *gin.Engine) {
 		}
 		req = req.WithContext(c.Request.Context())
 		maps.Copy(req.Header, c.Request.Header)
-		delete(req.Header, "Host")
+		req.Header.Set("Host", minioHost) 
 		client := &http.Client{
-			Timeout: 30 * time.Second, // XXX: magic number
+			Timeout: time.Duration(cfg.MinioTimeout),
 			CheckRedirect: func(req *http.Request, via []*http.Request) error {
 				return http.ErrUseLastResponse
 			},

backend/internal/utils/minio.go

@@ -0,0 +1,44 @@
+// Copyright (c) 2025 Nikolai Papin
+//
+// This file is part of Easywish
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
+// the GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+package utils
+
+import (
+	"easywish/config"
+	"fmt"
+	"net/url"
+)
+
+func LocalizeS3Url(originalURL string) (string, error) {
+
+	cfg := config.GetConfig()
+	newDomain := fmt.Sprintf("%s:%d", cfg.Hostname, cfg.Port)
+
+	parsedURL, err := url.Parse(originalURL)
+	if err != nil {
+		return "", fmt.Errorf("invalid URL: %w", err)
+	}
+
+	newURL := &url.URL{
+		Scheme: parsedURL.Scheme,
+		Host:   newDomain,
+		Path:   "/s3" + parsedURL.Path,
+		RawQuery: parsedURL.RawQuery,
+	}
+
+	return newURL.String(), nil
+}