Database controlle

harmonyV

Jul 26th, 2024

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import 'package:flutter/material.dart';
import 'package:habit_tracker/models/app_settings.dart';
import 'package:habit_tracker/services/extensions/day.dart';
import 'package:habit_tracker/models/habit.dart';
import 'package:habit_tracker/services/lists_enums_maps.dart';
import 'package:isar/isar.dart';
import 'package:path_provider/path_provider.dart';
class HabitDatabase extends ChangeNotifier {
static late Isar isar;
// I N I T I A L I Z E - D A T A B A S E
HabitDatabase() {
readHabitsFromDatabase();
}
static Future<void> initialize() async {
final directory = await getApplicationCacheDirectory();
isar = await Isar.open(
[HabitSchema, AppSettingsSchema],
directory: directory.path,
);
}
// save first date of app startup (for heatmap)
static Future<void> saveFirstLaunchDate() async {
final existingSettings = await isar.appSettings.where().findFirst();
if (existingSettings == null) {
final settings = AppSettings()..firstLaunchDate = DateTime.now();
await isar.writeTxn(() => isar.appSettings.put(settings));
}
}
// get first date of app startup (for heatmap)
Future<DateTime?> getFirstLaunchDate() async {
final settings = await isar.appSettings.where().findFirst();
return settings?.firstLaunchDate;
}
final _listOfHabits = <Habit>[];
List<Habit> get listOfHabits => _listOfHabits;
final _listOfHabitsInProgress = <Habit>[];
List<Habit> get listOfHabitsInProgress => _listOfHabitsInProgress;
final _listOfCompletedHabits = <Habit>[];
List<Habit> get listOfCompletedHabits => _listOfCompletedHabits;
var _selection = Selection.inProgress;
Selection get selection => _selection;
void setSelection(Selection newSelection) {
switch (newSelection) {
case Selection.inProgress:
_selection = newSelection;
break;
case Selection.completed:
_selection = newSelection;
break;
case Selection.overdue:
_selection = newSelection;
break;
default:
}
notifyListeners();
}
// C R E A T E - add a new habit
Future<void> addHabit(
String habitName,
String? details,
List<int> itemDataIntKeys,
HabitCategory habitCategory,
) async {
debugPrint(
"USED FOR CREATING HABIT; DATA_KEY_STRING_LIST; $itemDataIntKeys");
debugPrint("USED FOR CREATING HABIT; HABIT_CATEGORY; $habitCategory");
final newHabit = Habit(name: habitName, category: habitCategory);
newHabit.details = details;
newHabit.itemDataIntKeys.addAll(itemDataIntKeys);
// save to database
await isar.writeTxn(() => isar.habits.put(newHabit));
readHabitsFromDatabase();
}
// R E A D - read saved habits from database
Future<void> readHabitsFromDatabase() async {
final fetchedHabits = await isar.habits.where().findAll();
_listOfHabits.clear();
_listOfHabits.addAll(fetchedHabits);
_listOfHabitsInProgress.clear();
_listOfCompletedHabits.clear();
// check each habit in _listOfHabits for todays completion status
for (final habitToCheck in _listOfHabits) {
debugPrint("${habitToCheck.completedDays.contains(Day.now())}");
// if habit is NOT completed today => add it to _listOfHabitsInProgress
if (!habitToCheck.completedDays.contains(Day.now())) {
_listOfHabitsInProgress.add(habitToCheck);
}
// if habit IS completed today => add it to the _listOfCompletedHabits
else if (habitToCheck.completedDays.contains(Day.now())) {
_listOfCompletedHabits.add(habitToCheck);
}
}
setSelection(_selection);
notifyListeners();
}
// U P D A T E - check habit on and off
Future<void> updateHabitCompletion(int id, bool isCompleted) async {
// find the specific habit
final habit = await isar.habits.get(id);
// update completion status
if (habit != null) {
await isar.writeTxn(() async {
// if habit is completed => add the current date to the completedDays list
if (isCompleted && !habit.completedDays.contains(Day.now())) {
// addd the current date if it's not already in the list
habit.completedDays.checkDay(Day.now());
}
// if habit is NOT completed => remove current date from the completedDays list
else {
// remove the current date if the habit is marked as NOT completed
habit.completedDays.uncheckDay(Day.now());
//habit.completedDays.removeWhere((date) => date == Day.now());
}
// save the updated habits back to the database
await isar.habits.put(habit);
});
}
await readHabitsFromDatabase();
}
// U P D A T E - edit habit name
Future<void> editHabit(
int id,
String newName,
String? newDetails,
List<int> newitemDataIntKeys,
HabitCategory newHabitCategory,
) async {
// find the specific habit
final habit = await isar.habits.get(id);
// update habit name, itemKeyStringsList, category
if (habit != null) {
await isar.writeTxn(() async {
habit.name = newName;
habit.details = newDetails;
habit.itemDataIntKeys = [];
habit.itemDataIntKeys.addAll(newitemDataIntKeys);
habit.category = newHabitCategory;
// save updated habit back to database
await isar.habits.put(habit);
});
}
readHabitsFromDatabase();
}
// D E L E T E
Future<void> deleteHabit(int id) async {
await isar.writeTxn(() async {
await isar.habits.delete(id);
});
readHabitsFromDatabase();
}
}

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