feat(thread): check and show soft closed state

Author: realth000

lib/features/thread/v1/bloc/thread_bloc.dart

@@ -212,6 +212,7 @@ class ThreadBloc extends Bloc<ThreadEvent, ThreadState> with LoggerMixin {
     final threadLink = document.querySelector('head > link')?.attributes['href'];
     final tid = Uri.parse(threadLink ?? '').queryParameters['tid'];
 
+    final threadSoftClosed = document.querySelector('div#postlist h1.ts img[title="关闭"]') != null;
     final threadClosed = document.querySelector('form#fastpostform') == null;
     final threadDataNode = document.querySelector('div#postlist');
     final postList = Post.buildListFromThreadDataNode(threadDataNode, document.currentPage() ?? 1);
@@ -319,6 +320,7 @@ class ThreadBloc extends Bloc<ThreadEvent, ThreadState> with LoggerMixin {
       havePermission: havePermission,
       permissionDeniedMessage: permissionDeniedMessage,
       needLogin: needLogin,
+      threadSoftClosed: threadSoftClosed,
       threadClosed: threadClosed,
       postList: [...state.postList, ...postList],
       threadType: threadType,

lib/features/thread/v1/bloc/thread_state.dart

@@ -32,6 +32,7 @@ class ThreadState with ThreadStateMappable {
     this.havePermission = true,
     this.permissionDeniedMessage,
     this.needLogin = false,
+    this.threadSoftClosed = false,
     this.threadClosed = false,
     this.postList = const [],
     this.replyParameters,
@@ -99,6 +100,15 @@ class ThreadState with ThreadStateMappable {
   /// Only works when no user logged.
   final bool needLogin;
 
+  /// A soft closed state only means the thread is locked.
+  ///
+  /// Like soft lock, soft closed is a state where the thread is closed but the user may still has write permission
+  /// (For example, user is the moderator of current subreddit).
+  ///
+  /// In this state we shall keep the post functionality as the prerequisites are still satisfied, but give a tip that
+  /// the thread is closed and maybe it's not proper to post again.
+  final bool threadSoftClosed;
+
   /// Indicating current thread is closed or not.
   final bool threadClosed;
 

lib/features/thread/v1/view/thread_page.dart

@@ -2,6 +2,7 @@ import 'package:flutter/material.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
 import 'package:go_router/go_router.dart';
 import 'package:tsdm_client/constants/constants.dart';
+import 'package:tsdm_client/constants/layout.dart';
 import 'package:tsdm_client/constants/url.dart';
 import 'package:tsdm_client/extensions/build_context.dart';
 import 'package:tsdm_client/extensions/string.dart';
@@ -135,6 +136,8 @@ class _ThreadPageState extends State<ThreadPage> with SingleTickerProviderStateM
   }
 
   Widget _buildContent(BuildContext context, ThreadState state) {
+    final tr = context.t.threadPage;
+
     return Column(
       children: [
         Expanded(
@@ -154,6 +157,25 @@ class _ThreadPageState extends State<ThreadPage> with SingleTickerProviderStateM
             latestModAct: state.latestModAct,
           ),
         ),
+        if (state.threadSoftClosed && !state.threadClosed)
+          ColoredBox(
+            color: Theme.of(context).colorScheme.secondaryContainer,
+            child: Padding(
+              padding: edgeInsetsL12T4R12B4,
+              child: Row(
+                children: [
+                  Icon(Icons.lock_outline, size: 16, color: Theme.of(context).colorScheme.onSecondaryContainer),
+                  sizedBoxW4H4,
+                  Expanded(
+                    child: Text(
+                      tr.softCloseHint,
+                      style: TextStyle(color: Theme.of(context).colorScheme.onSecondaryContainer),
+                    ),
+                  ),
+                ],
+              ),
+            ),
+          ),
         _buildReplyBar(context, state),
       ],
     );

lib/i18n/en.i18n.json

@@ -365,7 +365,8 @@
     "draft": "Draft",
     "operationLog": {
       "title": "Operation Log"
-    }
+    },
+    "softCloseHint": "Thread is closed, be attention before posting"
   },
   "noticePage": {
     "title": "Notifications",

lib/i18n/zh-CN.i18n.json

@@ -365,7 +365,8 @@
     "draft": "草稿",
     "operationLog": {
       "title": "操作记录"
-    }
+    },
+    "softCloseHint": "帖子已关闭，回复前请注意"
   },
   "noticePage": {
     "title": "通知",

lib/i18n/zh-TW.i18n.json

@@ -365,7 +365,8 @@
     "draft": "草稿",
     "operationLog": {
       "title": "操作記錄"
-    }
+    },
+    "softCloseHint": "帖子已关闭，回复前请注意"
   },
   "noticePage": {
     "title": "通知",