// https://docs.flutter.dev/cookbook/persistence/sqlite

// SQLite
import 'dart:async';
import 'package:flutter/widgets.dart';
import 'package:flutter_expense_tracker/models/frequency.dart';
import 'package:path/path.dart';
import 'package:sqflite/sqflite.dart';

// Local
import '/models/expense.dart';

void loadDB() async {
  // Avoid errors caused by flutter upgrade.
  WidgetsFlutterBinding.ensureInitialized();

  final String frequencies =
      "'${Frequency.values.map((freq) => freq.title).join("','")}'";
  print(frequencies);

  // Open the database and store the reference.
  final database = openDatabase(
    // Set the path to the database. Note: Using the `join` function from the
    // `path` package is best practice to ensure the path is correctly
    // constructed for each platform.
    join(await getDatabasesPath(), 'expense_tracker.db'),

    onCreate: (db, version) {
      // Run the CREATE TABLE statement on the database.
      return db.execute(
        """
        CREATE TABLE expense
          ( id INTEGER PRIMARY KEY
          , name TEXT
          , cost DOUBLE
          , frequency TEXT CHECK(frequency IN ($frequencies) )
          , description TEXT
        )""",
      );
    },
    // Set the version. This executes the onCreate function and provides a
    // path to perform database upgrades and downgrades.
    version: 1,
  );
}