import { ref } from 'vue';
import { defineStore } from 'pinia';
import { useAuthStore } from 'src/stores/auth-store';
import { timesheetApprovalService } from 'src/modules/timesheet-approval/services/timesheet-approval-service';
import { timesheetService } from 'src/modules/timesheets/services/timesheet-service';
import type { TimesheetOverview } from "src/modules/timesheet-approval/models/timesheet-overview.models";
import type { PayPeriod } from 'src/modules/shared/models/pay-period.models';
import type { Timesheet } from 'src/modules/timesheets/models/timesheet.models';
import type { TimesheetApprovalCSVReportFilters } from 'src/modules/timesheet-approval/models/timesheet-approval-csv-report.models';


export const useTimesheetStore = defineStore('timesheet', () => {
    const auth_store = useAuthStore();
    const is_loading = ref<boolean>(false);
    const pay_period = ref<PayPeriod>();
    const pay_period_overviews = ref<TimesheetOverview[]>([]);
    const current_pay_period_overview = ref<TimesheetOverview>();
    const timesheets = ref<Timesheet[]>();
    const pay_period_report = ref();

    const getPayPeriodByDateOrYearAndNumber = async (date_or_year: string | number, period_number?: number): Promise<boolean> => {
        try {
            if (typeof date_or_year === 'string') {
                pay_period.value = await timesheetService.getPayPeriodByDate(date_or_year);
            }
            else if (typeof date_or_year === 'number' && period_number) {
                pay_period.value = await timesheetService.getPayPeriodByYearAndPeriodNumber(date_or_year, period_number);
            }
            else pay_period.value = undefined;

            return true;
        } catch (error) {
            console.error('Could not get current pay period: ', error);
            pay_period.value = undefined;
            pay_period_overviews.value = [];
            //TODO: More in-depth error-handling here

            return false;
        }
    };

    const getTimesheetOverviewsByPayPeriod = async (pay_year: number, period_number: number, supervisor_email?: string): Promise<boolean> => {
        is_loading.value = true;

        try {
            const response = await timesheetApprovalService.getPayPeriodOverviewsBySupervisorEmail(pay_year, period_number, supervisor_email ?? auth_store.user?.email ?? '');
            pay_period_overviews.value = response.employees_overview;
            is_loading.value = false;

            return true;
        } catch (error) {
            console.error('There was an error retrieving Employee Pay Period overviews: ', error);
            pay_period_overviews.value = [];
            // TODO: More in-depth error-handling here
            is_loading.value = false;

            return false;
        }
    };

    const getTimesheetsByEmployeeEmail = async (employee_email: string) => {
        is_loading.value = true;

        if (pay_period.value === undefined) return;
        try {
            const response = await timesheetService.getTimesheetsByPayPeriodAndEmployeeEmail(employee_email, pay_period.value.pay_year, pay_period.value.pay_period_no);
            timesheets.value = response.timesheets;
            is_loading.value = false;
        } catch (error) {
            console.error('There was an error retrieving timesheet details for this employee: ', error);
            // TODO: More in-depth error-handling here
            timesheets.value = [];
            is_loading.value = false;
        }
    };

    const getPayPeriodReportByYearAndPeriodNumber = async (year: number, period_number: number, report_filters?: TimesheetApprovalCSVReportFilters) => {
        try {
            const response = await timesheetApprovalService.getPayPeriodReportByYearAndPeriodNumber(
                year,
                period_number,
                report_filters
            );
            pay_period_report.value = response;
            return true;
        } catch (error) {
            console.error('There was an error retrieving the report CSV: ', error);
            // TODO: More in-depth error-handling here
        }

        return false;
    };

    return {
        is_loading,
        pay_period,
        pay_period_overviews,
        current_pay_period_overview,
        timesheets,
        getPayPeriodByDateOrYearAndNumber,
        getTimesheetOverviewsByPayPeriod,
        getTimesheetsByEmployeeEmail,
        getPayPeriodReportByYearAndPeriodNumber,
    };
});