fix update page

lib/features/projects/presentation/pages/submission_create_page.dart

@@ -53,10 +53,14 @@ class _SubmissionCreatePageState extends ConsumerState<SubmissionCreatePage> {
   bool _isSubmitting = false;
   bool _isLoadingDetail = false;
   String? _deletingFileId; // Track which file is being deleted
+  bool _isAllowModify = true; // From API detail response
 
   /// Whether we're editing an existing submission
   bool get isEditing => widget.submission != null;
 
+  /// Whether the form is read-only (editing but not allowed to modify)
+  bool get isReadOnly => isEditing && !_isAllowModify;
+
   @override
   void initState() {
     super.initState();
@@ -101,6 +105,9 @@ class _SubmissionCreatePageState extends ConsumerState<SubmissionCreatePage> {
 
       // Set existing files from API
       _existingFiles = detail.filesList;
+
+      // Set modify permission from API
+      _isAllowModify = detail.isAllowModify;
     } catch (e) {
       if (mounted) {
         ScaffoldMessenger.of(context).showSnackBar(
@@ -146,7 +153,11 @@ class _SubmissionCreatePageState extends ConsumerState<SubmissionCreatePage> {
           onPressed: () => Navigator.of(context).pop(),
         ),
         title: Text(
-          isEditing ? 'Chỉnh sửa Dự án' : 'Đăng ký Công trình',
+          isReadOnly
+              ? 'Chi tiết Dự án'
+              : isEditing
+                  ? 'Chỉnh sửa Dự án'
+                  : 'Đăng ký Công trình',
           style: TextStyle(color: colorScheme.onSurface),
         ),
         actions: [
@@ -197,10 +208,12 @@ class _SubmissionCreatePageState extends ConsumerState<SubmissionCreatePage> {
 
             // File Upload
             _buildFileUploadCard(colorScheme),
-            const SizedBox(height: 24),
 
-            // Submit Button
-            _buildSubmitButton(colorScheme),
+            // Submit Button - only show when not read-only
+            if (!isReadOnly) ...[
+              const SizedBox(height: 24),
+              _buildSubmitButton(colorScheme),
+            ],
             const SizedBox(height: 40),
           ],
         ),
@@ -376,49 +389,50 @@ class _SubmissionCreatePageState extends ConsumerState<SubmissionCreatePage> {
             ),
             const SizedBox(height: 16),
 
-            // Upload Area
-            InkWell(
-              onTap: _pickFiles,
-              borderRadius: BorderRadius.circular(8),
-              child: Container(
-                padding: const EdgeInsets.symmetric(vertical: 40, horizontal: 20),
-                width: double.infinity,
-                decoration: BoxDecoration(
-                  border: Border.all(
-                    color: colorScheme.surfaceContainerHighest,
-                    width: 2,
-                    style: BorderStyle.solid,
+            // Upload Area - only show when not read-only
+            if (!isReadOnly)
+              InkWell(
+                onTap: _pickFiles,
+                borderRadius: BorderRadius.circular(8),
+                child: Container(
+                  padding: const EdgeInsets.symmetric(vertical: 40, horizontal: 20),
+                  width: double.infinity,
+                  decoration: BoxDecoration(
+                    border: Border.all(
+                      color: colorScheme.surfaceContainerHighest,
+                      width: 2,
+                      style: BorderStyle.solid,
+                    ),
+                    borderRadius: BorderRadius.circular(8),
                   ),
-                  borderRadius: BorderRadius.circular(8),
-                ),
-                child: Column(
-                  children: [
-                    FaIcon(
-                      FontAwesomeIcons.cloudArrowUp,
-                      size: 48,
-                      color: colorScheme.onSurfaceVariant,
-                    ),
-                    const SizedBox(height: 12),
-                    Text(
-                      'Kéo thả ảnh vào đây',
-                      style: TextStyle(
-                        fontSize: 16,
-                        fontWeight: FontWeight.w500,
-                        color: colorScheme.onSurface,
-                      ),
-                    ),
-                    const SizedBox(height: 4),
-                    Text(
-                      'hoặc nhấn để chọn file',
-                      style: TextStyle(
-                        fontSize: 14,
+                  child: Column(
+                    children: [
+                      FaIcon(
+                        FontAwesomeIcons.cloudArrowUp,
+                        size: 48,
                         color: colorScheme.onSurfaceVariant,
                       ),
-                    ),
-                  ],
+                      const SizedBox(height: 12),
+                      Text(
+                        'Kéo thả ảnh vào đây',
+                        style: TextStyle(
+                          fontSize: 16,
+                          fontWeight: FontWeight.w500,
+                          color: colorScheme.onSurface,
+                        ),
+                      ),
+                      const SizedBox(height: 4),
+                      Text(
+                        'hoặc nhấn để chọn file',
+                        style: TextStyle(
+                          fontSize: 14,
+                          color: colorScheme.onSurfaceVariant,
+                        ),
+                      ),
+                    ],
+                  ),
                 ),
               ),
-            ),
 
             // Existing files from API
             if (_existingFiles.isNotEmpty) ...[
@@ -488,7 +502,9 @@ class _SubmissionCreatePageState extends ConsumerState<SubmissionCreatePage> {
     int maxLines = 1,
     TextInputType? keyboardType,
     String? helperText,
+    bool? readOnly,
   }) {
+    final isFieldReadOnly = readOnly ?? isReadOnly;
     return Column(
       crossAxisAlignment: CrossAxisAlignment.start,
       children: [
@@ -517,11 +533,12 @@ class _SubmissionCreatePageState extends ConsumerState<SubmissionCreatePage> {
           controller: controller,
           maxLines: maxLines,
           keyboardType: keyboardType,
+          readOnly: isFieldReadOnly,
           decoration: InputDecoration(
             hintText: hint,
             hintStyle: TextStyle(color: colorScheme.onSurfaceVariant),
             filled: true,
-            fillColor: colorScheme.surface,
+            fillColor: isFieldReadOnly ? colorScheme.surfaceContainerHighest : colorScheme.surface,
             border: OutlineInputBorder(
               borderRadius: BorderRadius.circular(8),
               borderSide: BorderSide(color: colorScheme.surfaceContainerHighest),
@@ -594,10 +611,10 @@ class _SubmissionCreatePageState extends ConsumerState<SubmissionCreatePage> {
         const SizedBox(height: 8),
         progressListAsync.when(
           data: (progressList) => DropdownButtonFormField<ProjectProgress>(
-            initialValue: _selectedProgress,
+            value: _selectedProgress,
             decoration: InputDecoration(
               filled: true,
-              fillColor: colorScheme.surface,
+              fillColor: isReadOnly ? colorScheme.surfaceContainerHighest : colorScheme.surface,
               border: OutlineInputBorder(
                 borderRadius: BorderRadius.circular(8),
                 borderSide: BorderSide(color: colorScheme.surfaceContainerHighest),
@@ -618,11 +635,13 @@ class _SubmissionCreatePageState extends ConsumerState<SubmissionCreatePage> {
                       child: Text(progress.status),
                     ))
                 .toList(),
-            onChanged: (value) {
-              setState(() {
-                _selectedProgress = value;
-              });
-            },
+            onChanged: isReadOnly
+                ? null
+                : (value) {
+                    setState(() {
+                      _selectedProgress = value;
+                    });
+                  },
             validator: (value) {
               if (value == null) {
                 return 'Vui lòng chọn tiến độ công trình';
@@ -692,11 +711,11 @@ class _SubmissionCreatePageState extends ConsumerState<SubmissionCreatePage> {
         ),
         const SizedBox(height: 8),
         InkWell(
-          onTap: _pickExpectedDate,
+          onTap: isReadOnly ? null : _pickExpectedDate,
           child: Container(
             padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 12),
             decoration: BoxDecoration(
-              color: colorScheme.surface,
+              color: isReadOnly ? colorScheme.surfaceContainerHighest : colorScheme.surface,
               border: Border.all(color: colorScheme.surfaceContainerHighest),
               borderRadius: BorderRadius.circular(8),
             ),
@@ -847,8 +866,8 @@ class _SubmissionCreatePageState extends ConsumerState<SubmissionCreatePage> {
               ],
             ),
           ),
-          // Only show remove button when not uploading
-          if (!_isSubmitting)
+          // Only show remove button when not uploading and not read-only
+          if (!_isSubmitting && !isReadOnly)
             IconButton(
               icon: const FaIcon(
                 FontAwesomeIcons.xmark,
@@ -961,8 +980,8 @@ class _SubmissionCreatePageState extends ConsumerState<SubmissionCreatePage> {
               ],
             ),
           ),
-          // Delete button or checkmark
-          if (!_isSubmitting && !isDeleting)
+          // Delete button or checkmark - only show delete when not read-only
+          if (!_isSubmitting && !isDeleting && !isReadOnly)
             IconButton(
               icon: const FaIcon(
                 FontAwesomeIcons.trash,
@@ -1166,10 +1185,19 @@ class _SubmissionCreatePageState extends ConsumerState<SubmissionCreatePage> {
   }
 
   Future<void> _pickExpectedDate() async {
+    final now = DateTime.now();
+    final today = DateTime(now.year, now.month, now.day);
+
+    // For editing mode with past date, allow selecting from that date
+    // Otherwise, start from today
+    final firstDate = (_expectedStartDate != null && _expectedStartDate!.isBefore(today))
+        ? _expectedStartDate!
+        : today;
+
     final date = await showDatePicker(
       context: context,
-      initialDate: _expectedStartDate ?? DateTime.now(),
-      firstDate: DateTime.now(),
+      initialDate: _expectedStartDate ?? today,
+      firstDate: firstDate,
       lastDate: DateTime.now().add(const Duration(days: 365 * 3)),
     );