오대리ㅣㅣㅣㅣ

2026-04-07 16:17:03 +09:00
commit 5bb54fdefe
63 changed files with 7897 additions and 0 deletions
--- a/mobile/lib/data/message_local_store.dart
+++ b/mobile/lib/data/message_local_store.dart
@@ -0,0 +1,119 @@
+import 'package:flutter/foundation.dart';
+import 'package:path/path.dart' as p;
+import 'package:path_provider/path_provider.dart';
+import 'package:sqflite/sqflite.dart';
+
+import '../models/message_model.dart';
+
+/// Local cache of messages keyed by context + room (plan: 맥락 ID 반영).
+/// On **web**, uses in-memory storage only (`sqflite` is not supported).
+class MessageLocalStore {
+  MessageLocalStore();
+
+  Database? _db;
+
+  /// Web-only: key = "contextId::roomId"
+  final Map<String, List<MessageModel>> _memory = {};
+
+  static String _memKey(String contextId, String roomId) => '$contextId::$roomId';
+
+  Future<Database> get database async {
+    if (kIsWeb) {
+      throw UnsupportedError('database getter should not be used on web');
+    }
+    if (_db != null) return _db!;
+    final dir = await getApplicationDocumentsDirectory();
+    final path = p.join(dir.path, 'msn_messages.db');
+    _db = await openDatabase(
+      path,
+      version: 1,
+      onCreate: (db, v) async {
+        await db.execute('''
+CREATE TABLE messages (
+  id TEXT NOT NULL,
+  context_id TEXT NOT NULL,
+  room_id TEXT NOT NULL,
+  sender_id TEXT NOT NULL,
+  body TEXT NOT NULL,
+  created_at TEXT NOT NULL,
+  kind TEXT NOT NULL DEFAULT 'text',
+  PRIMARY KEY (id, context_id)
+);
+''');
+        await db.execute(
+          'CREATE INDEX idx_room_ctx ON messages(room_id, context_id, created_at);',
+        );
+      },
+    );
+    return _db!;
+  }
+
+  /// [roomId] required so empty API results can clear the web cache.
+  Future<void> upsertMessages(
+    String contextId,
+    String roomId,
+    List<MessageModel> list,
+  ) async {
+    if (kIsWeb) {
+      final key = _memKey(contextId, roomId);
+      if (list.isEmpty) {
+        _memory[key] = [];
+        return;
+      }
+      final byId = <String, MessageModel>{
+        for (final m in _memory[key] ?? []) m.id: m,
+      };
+      for (final m in list) {
+        byId[m.id] = m;
+      }
+      final merged = byId.values.toList()
+        ..sort((a, b) => a.createdAt.compareTo(b.createdAt));
+      _memory[key] = merged;
+      return;
+    }
+
+    final db = await database;
+    final batch = db.batch();
+    for (final m in list) {
+      batch.insert(
+        'messages',
+        {
+          'id': m.id,
+          'context_id': contextId,
+          'room_id': m.roomId,
+          'sender_id': m.senderId,
+          'body': m.body,
+          'created_at': m.createdAt,
+          'kind': m.kind,
+        },
+        conflictAlgorithm: ConflictAlgorithm.replace,
+      );
+    }
+    await batch.commit(noResult: true);
+  }
+
+  Future<List<MessageModel>> listForRoom(String contextId, String roomId) async {
+    if (kIsWeb) {
+      return List<MessageModel>.from(_memory[_memKey(contextId, roomId)] ?? []);
+    }
+    final db = await database;
+    final rows = await db.query(
+      'messages',
+      where: 'context_id = ? AND room_id = ?',
+      whereArgs: [contextId, roomId],
+      orderBy: 'created_at ASC',
+    );
+    return rows
+        .map(
+          (r) => MessageModel(
+            id: r['id']! as String,
+            roomId: r['room_id']! as String,
+            senderId: r['sender_id']! as String,
+            body: r['body']! as String,
+            createdAt: r['created_at']! as String,
+            kind: r['kind'] as String? ?? 'text',
+          ),
+        )
+        .toList();
+  }
+}