Fix Nextcloud user creation and WebDAV URL construction

- Fix CreateNextcloudUser to use form-encoded POST (OCS API requirement)
- Fix WebDAV URL construction to avoid double slashes
- Apply fix to Upload, Download, and Delete methods

go_cloud/internal/storage/nextcloud.go

@@ -17,24 +17,19 @@ func CreateNextcloudUser(nextcloudBaseURL, adminUser, adminPass, username, passw
 	baseURL := strings.Split(nextcloudBaseURL, "/remote.php")[0]
 	url := fmt.Sprintf("%s/ocs/v1.php/cloud/users", baseURL)
 
-	payload := map[string]string{
+	// OCS API expects form-encoded data, not JSON
-		"userid":   username,
+	formData := fmt.Sprintf("userid=%s&password=%s", 
-		"password": password,
+		strings.ReplaceAll(username, " ", "+"),
-	}
+		strings.ReplaceAll(password, " ", "+"))
 
-	jsonData, err := json.Marshal(payload)
+	req, err := http.NewRequest("POST", url, bytes.NewBufferString(formData))
-	if err != nil {
-		return fmt.Errorf("failed to marshal payload: %w", err)
-	}
-
-	req, err := http.NewRequest("POST", url, bytes.NewBuffer(jsonData))
 	if err != nil {
 		return fmt.Errorf("failed to create request: %w", err)
 	}
 
 	req.SetBasicAuth(adminUser, adminPass)
 	req.Header.Set("OCS-APIRequest", "true")
-	req.Header.Set("Content-Type", "application/json")
+	req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
 
 	client := &http.Client{}
 	resp, err := client.Do(req)
@@ -50,7 +45,7 @@ func CreateNextcloudUser(nextcloudBaseURL, adminUser, adminPass, username, passw
 		return fmt.Errorf("failed to create Nextcloud user (status %d): %s", resp.StatusCode, string(body))
 	}
 
-	fmt.Printf("[NEXTCLOUD] Created user account: %s\n", username)
+	fmt.Printf("[NEXTCLOUD] Created user account: %s with generated password\n", username)
 	return nil
 }
 

go_cloud/internal/storage/webdav.go

@@ -85,9 +85,16 @@ func (c *WebDAVClient) Upload(ctx context.Context, remotePath string, r io.Reade
 	rel := strings.TrimLeft(remotePath, "/")
 	u := c.basePrefix
 	if u == "/" || u == "" {
-		u = "/"
+		u = ""
+	}
+	u = strings.TrimRight(u, "/")
+	
+	var full string
+	if u == "" {
+		full = fmt.Sprintf("%s/%s", c.baseURL, url.PathEscape(rel))
+	} else {
+		full = fmt.Sprintf("%s%s/%s", c.baseURL, u, url.PathEscape(rel))
 	}
-	full := fmt.Sprintf("%s%s/%s", c.baseURL, u, url.PathEscape(rel))
 	full = strings.ReplaceAll(full, "%2F", "/")
 	
 	fmt.Printf("[WEBDAV-UPLOAD] BaseURL: %s, BasePrefix: %s, RemotePath: %s, Full URL: %s\n", c.baseURL, c.basePrefix, remotePath, full)
@@ -125,9 +132,16 @@ func (c *WebDAVClient) Download(ctx context.Context, remotePath string) (io.Read
 	rel := strings.TrimLeft(remotePath, "/")
 	u := c.basePrefix
 	if u == "/" || u == "" {
-		u = "/"
+		u = ""
+	}
+	u = strings.TrimRight(u, "/")
+	
+	var full string
+	if u == "" {
+		full = fmt.Sprintf("%s/%s", c.baseURL, url.PathEscape(rel))
+	} else {
+		full = fmt.Sprintf("%s%s/%s", c.baseURL, u, url.PathEscape(rel))
 	}
-	full := fmt.Sprintf("%s%s/%s", c.baseURL, u, url.PathEscape(rel))
 	full = strings.ReplaceAll(full, "%2F", "/")
 
 	req, err := http.NewRequestWithContext(ctx, "GET", full, nil)
@@ -161,9 +175,16 @@ func (c *WebDAVClient) Delete(ctx context.Context, remotePath string) error {
 	rel := strings.TrimLeft(remotePath, "/")
 	u := c.basePrefix
 	if u == "/" || u == "" {
-		u = "/"
+		u = ""
+	}
+	u = strings.TrimRight(u, "/")
+	
+	var full string
+	if u == "" {
+		full = fmt.Sprintf("%s/%s", c.baseURL, url.PathEscape(rel))
+	} else {
+		full = fmt.Sprintf("%s%s/%s", c.baseURL, u, url.PathEscape(rel))
 	}
-	full := fmt.Sprintf("%s%s/%s", c.baseURL, u, url.PathEscape(rel))
 	full = strings.ReplaceAll(full, "%2F", "/")
 
 	req, err := http.NewRequestWithContext(ctx, "DELETE", full, nil)