I made this Flutter app when I was working as a student (2021) to track my wage from month to month by logging my shifts. I just started learning Flutter when I wrote this code. I learned much since then.
The app stores the data locally. The stored data is a JSON array with serialized instances of the Work (lib/models/work.dart) class as JSON objects in it.
It uses hardcoded numbers as hourly wages and VAT (15%). The default hourly wage is 1500Ft that grows between 6pm and 10pm with 30% and between 10pm and 6am with 40%. On red-letter days the whole wage for the shift being multiplied by 2.
It uses the following method to calculate wage for a shift with the specifications above:
Salary _calculateSalary() {
int perHour = 1500; // TODO: add to settings
// TODO: add them to settings
int after18 = (perHour * 1.3).toInt();
int after22 = (perHour * 1.4).toInt();
int salary = 0;
DateTime temp = _fromDate;
while (temp.isBefore(_toDate)) {
if (temp.hour >= 22 || temp.hour < 6) {
salary += after22;
} else if (temp.hour >= 18 && temp.hour < 22) {
salary += after18;
} else {
salary += perHour;
}
temp = temp.add(Duration(hours: 1));
}
return Salary(_celebrationDay ? salary * 2 : salary);
}lib/widgets/add_day.dart | line 265
The Salary (lib/models/salary.dart) class has a salary and a withoutVAT field. The withoutVAT is being multiplied by 0.85 (VAT is 15%) in the constructor.
It has a minimal UI design aswell. The data is shown for the selected month, but you can add shifts to any month with the add button or with editing a current shift's month.
- modal_bottom_sheet
^2.0.0 - platform_date_picker
^0.2.0-nullsafety.0+1 - intl
^0.17.0 - shared_preferences
^2.0.5 - flutter_native_splash
^2.2.17 - mat_month_picker_dialog
^1.1.1