99 lines
2.3 KiB
Dart
99 lines
2.3 KiB
Dart
// https://docs.flutter.dev/cookbook/persistence/sqlite
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// SQLite
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import 'dart:io';
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import 'dart:async';
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import 'package:path/path.dart';
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import 'package:path_provider/path_provider.dart';
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import 'package:sqflite/sqflite.dart';
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// Local
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import '/models/expense.dart';
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// Leaned on this example:
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// https://learnflutterwithme.com/sqlite
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class DatabaseHelper {
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DatabaseHelper._privateConstructor();
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static final DatabaseHelper instance = DatabaseHelper._privateConstructor();
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static Database? _db;
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Future<Database> get db async => _db ??= await _initDatabase();
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Future<Database> _initDatabase() async {
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Directory documentsDirectory = await getApplicationDocumentsDirectory();
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String path = join(documentsDirectory.path, "com_hyperling_expense.db");
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return await openDatabase(
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path,
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version: 1,
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onCreate: _onCreate,
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);
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}
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Future _onCreate(Database db, int version) async {
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await db.execute("""
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CREATE TABLE expense
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( id INTEGER PRIMARY KEY
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, name TEXT NOT NULL UNIQUE
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, cost DOUBLE NOT NULL
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, frequency TEXT NOT NULL
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, description TEXT
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)
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""");
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}
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/// Expense Section
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///
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Future<List<Expense>> getExpenses() async {
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Database db = await instance.db;
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var expenses = await db.query("expense", orderBy: "name");
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List<Expense> expenseList = expenses.isNotEmpty
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? expenses.map((c) => Expense.fromMap(c)).toList()
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: [];
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return expenseList;
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}
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Future<int> addExpense(Expense expense) async {
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Database db = await instance.db;
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return await db.insert(
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"expense",
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expense.toMap(),
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);
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}
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Future<int> removeExpense(int id) async {
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Database db = await instance.db;
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return await db.delete(
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"expense",
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where: "id = ?",
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whereArgs: [id],
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);
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}
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Future<int> updateExpense(Expense expense) async {
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Database db = await instance.db;
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return await db.update(
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"expense",
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expense.toMap(),
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where: "id = ?",
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whereArgs: [expense.id],
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);
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}
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Future<bool> checkExpenseNameExists(String name) async {
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Database db = await instance.db;
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var expenses = await db.query("expense",
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where: "name = ?", whereArgs: [name],);
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return expenses.isNotEmpty;
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}
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///
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/// Income Section
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///
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///
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/// Liquid Asset Section
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///
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}
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