integrated with previous

2023-06-09 15:55:59 +05:30
parent a358f65853
commit 2cd685b65e
23 changed files with 1950 additions and 397 deletions
--- a/lib/utils/checkin_db_helper.dart
+++ b/lib/utils/checkin_db_helper.dart
@ -0,0 +1,82 @@
+import 'package:sqflite/sqflite.dart';
+import 'package:path/path.dart';
+
+class CheckinDBHelper {
+  static final _databaseName = "EventDatabase.db";
+  static final _databaseVersion = 1;
+
+  static final table = 'event_table';
+
+  static final columnLocationId = 'location_id';
+  static final columnOrderId = 'order_id';
+  static final columnCheckinTime = 'checkin_time';
+  static final columnEventName = 'event_name';
+
+  // make this a singleton class
+  CheckinDBHelper._privateConstructor();
+  static final CheckinDBHelper instance = CheckinDBHelper._privateConstructor();
+
+  // only have a single app-wide reference to the database
+  static Database? _database;
+  Future<Database> get database async {
+    if (_database != null) return _database!;
+    _database = await _initDatabase();
+    return _database!;
+  }
+
+  // this opens the database (and creates it if it doesn't exist)
+  _initDatabase() async {
+    String path = join(await getDatabasesPath(), _databaseName);
+    return await openDatabase(path,
+        version: _databaseVersion,
+        onCreate: _onCreate);
+  }
+
+  // SQL code to create the database table
+  Future _onCreate(Database db, int version) async {
+    await db.execute('''
+          CREATE TABLE $table (
+            $columnLocationId INTEGER PRIMARY KEY,
+            $columnOrderId INTEGER NOT NULL,
+            $columnCheckinTime TEXT NOT NULL,
+            $columnEventName TEXT NOT NULL
+          )
+          ''');
+  }
+
+  // Helper methods
+
+  Future<int> insert(Map<String, dynamic> row) async {
+    Database db = await instance.database;
+    return await db.insert(table, row);
+  }
+
+  Future<bool> exists(int locationId) async {
+    Database db = await instance.database;
+    List<Map<String, dynamic>> rows = await db.query(
+      table,
+      where: '$columnLocationId = ?',
+      whereArgs: [locationId],
+    );
+    return rows.isNotEmpty;
+  }
+
+  Future<List<Map<String, dynamic>>> queryAllRows() async {
+    Database db = await instance.database;
+    return await db.query(table);
+  }
+
+  Future<List<Map<String, dynamic>>> queryRowsByLocation(int locationId) async {
+    Database db = await instance.database;
+    return await db.query(table,
+      where: '$columnLocationId = ?',
+      whereArgs: [locationId],
+    );
+  }
+
+  Future<int> update(Map<String, dynamic> row) async {
+    Database db = await instance.database;
+    int id = row[columnLocationId];
+    return await db.update(table, row, where: '$columnLocationId = ?', whereArgs: [id]);
+  }
+}