移到新目錄(gogs) 並優化 login 及上傳圖片機制

lib/expense/expense_detail.dart

@@ -1,6 +1,7 @@
 import 'package:flutter/material.dart';
 import 'package:intl/intl.dart';
 import './expense_model.dart';
+import '../services/generic_api_service.dart';
 
 class ExpenseDetail extends StatelessWidget {
   final ExpenseApply expense;
@@ -170,17 +171,32 @@ class ExpenseDetail extends StatelessWidget {
             height: 250,
             width: double.infinity,
             fit: BoxFit.cover,
+            // [新增] 加載中的轉圈圈
+            loadingBuilder: (context, child, loadingProgress) {
+              if (loadingProgress == null) return child;
+              return Container(
+                height: 250,
+                color: Colors.grey.shade100,
+                child: const Center(child: CircularProgressIndicator()),
+              );
+            },
             // 處理圖片加載失敗
-            errorBuilder: (context, error, stackTrace) => Container(
-              height: 200,
-              child: const Column(
-                mainAxisAlignment: MainAxisAlignment.center,
-                children: [
-                  Icon(Icons.broken_image, color: Colors.grey, size: 40),
-                  Text('無法載入單據圖片', style: TextStyle(color: Colors.grey)),
-                ],
-              ),
-            ),
+            errorBuilder: (context, error, stackTrace) {
+              print("圖片載入失敗，試圖存取的網址為: ${expense.fullPicUrl}");
+              return Container(
+                height: 200,
+                color: Colors.grey.shade100,
+                child: Column(
+                  mainAxisAlignment: MainAxisAlignment.center,
+                  children: [
+                    const Icon(Icons.broken_image, color: Colors.red, size: 40),
+                    const SizedBox(height: 8),
+                    Text('無法載入圖片', style: TextStyle(color: Colors.grey.shade600)),
+                    Text(expense.picPath ?? "無檔名", style: const TextStyle(fontSize: 10)),
+                  ],
+                ),
+              );
+            },
           ),
         ),
       ),