import { DayExpensesDto, WeekDto, DetailedShifts, TimesheetPeriodDto } from "./dtos/timesheet-period.dto";
import { ExpenseRow, ExpensesAmount, ShiftRow } from "./timesheet.types";
import { addDays, shortDate, toNum, upper } from "./timesheet.helpers";
import { Prisma } from "@prisma/client";


//mappers
export const mapShiftRow = (shift: {
    date: Date;
    start_time: Date;
    end_time: Date;
    comment?: string | null;
    is_approved: boolean;
    is_remote: boolean;
    bank_code: { type: string };
}): ShiftRow => ({
    date: shift.date,
    start_time: shift.start_time,
    end_time: shift.end_time,
    comment: shift.comment ?? '',
    is_approved: shift.is_approved,
    is_remote: shift.is_remote,
    type: upper(shift.bank_code.type),
});

export const mapExpenseRow = (expense: {
    date: Date;
    amount: Prisma.Decimal | number | null;
    mileage: Prisma.Decimal | number | null;
    comment?: string | null;
    is_approved: boolean;
    supervisor_comment?: string|null;
    bank_code: { type: string },
}): ExpenseRow => ({
    date: expense.date,
    amount: toNum(expense.amount),
    mileage: toNum(expense.mileage),
    comment: expense.comment ?? '',
    is_approved: expense.is_approved,
    supervisor_comment: expense.supervisor_comment ?? '',
    type: upper(expense.bank_code.type),
});


// Factories
export function makeEmptyDayExpenses(): DayExpensesDto {
    return {
        expenses: [],
        total_expense: -1,
        total_mileage: -1,
    };
}

export function makeEmptyWeek(week_start: Date): WeekDto {
    const make_empty_shifts = (offset: number): DetailedShifts => ({
        shifts: [],
        regular_hours: 0,
        evening_hours: 0,
        emergency_hours: 0,
        overtime_hours: 0,
        comment: '',
        short_date: shortDate(addDays(week_start, offset)),
        break_durations: 0,
    });
    return {
        is_approved: true,
        shifts: {
            sun: make_empty_shifts(0),
            mon: make_empty_shifts(1),
            tue: make_empty_shifts(2),
            wed: make_empty_shifts(3),
            thu: make_empty_shifts(4),
            fri: make_empty_shifts(5),
            sat: make_empty_shifts(6),
        },
        expenses: {
            sun: makeEmptyDayExpenses(),
            mon: makeEmptyDayExpenses(),
            tue: makeEmptyDayExpenses(),
            wed: makeEmptyDayExpenses(),
            thu: makeEmptyDayExpenses(),
            fri: makeEmptyDayExpenses(),
            sat: makeEmptyDayExpenses(),
        },
    };
}

export function makeEmptyPeriod(): TimesheetPeriodDto {
    return { weeks: [makeEmptyWeek(new Date()), makeEmptyWeek(new Date())], employee_full_name: '' };
}

export const makeAmounts = (): ExpensesAmount => ({
    expense: 0,
    mileage: 0,
});