309 lines
12 KiB
TypeScript
309 lines
12 KiB
TypeScript
import { PrismaService } from "src/prisma/prisma.service";
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import { BadRequestException, Injectable, NotFoundException } from "@nestjs/common";
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import { Filters, CsvRow } from "src/time-and-attendance/exports/export-csv-options.dto";
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@Injectable()
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export class CsvExportService {
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constructor(private readonly prisma: PrismaService) { }
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async collectTransaction(
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year: number,
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period_no: number,
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filters: Filters,
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// approved: boolean = true
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): Promise<CsvRow[]> {
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//fetch period
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const period = await this.prisma.payPeriods.findFirst({
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where: { pay_year: year, pay_period_no: period_no },
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select: { period_start: true, period_end: true },
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});
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if (!period) throw new NotFoundException(`Pay period ${year}-${period_no} not found`);
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const start = period.period_start;
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const end = period.period_end;
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//fetch company codes from .env
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const company_codes = this.resolveCompanyCodes(filters.companies);
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if (company_codes.length === 0) throw new BadRequestException('No company selected');
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//Flag types
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const { shifts: want_shifts, expenses: want_expense, holiday: want_holiday, vacation: want_vacation } = filters.types;
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if (!want_shifts && !want_expense && !want_holiday && !want_vacation) {
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throw new BadRequestException(' No export type selected ');
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}
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const approved_filter = filters.approved ? { is_approved: true } : {};
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const holiday_code = await this.resolveHolidayTypeCode('HOLIDAY');
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const vacation_code = await this.resolveVacationTypeCode('VACATION');
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const code_filter = [holiday_code, vacation_code];
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//Prisma queries
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const promises: Array<Promise<any[]>> = [];
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if (want_shifts) {
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promises.push(this.prisma.shifts.findMany({
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where: {
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date: { gte: start, lte: end },
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...approved_filter,
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bank_code: { bank_code: { notIn: code_filter } },
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timesheet: { employee: { company_code: { in: company_codes } } },
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},
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select: {
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date: true,
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start_time: true,
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end_time: true,
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bank_code: { select: { bank_code: true } },
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timesheet: {
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select: {
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employee: {
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select: {
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company_code: true,
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external_payroll_id: true,
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user: { select: { first_name: true, last_name: true } },
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}
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},
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}
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},
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},
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}));
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} else {
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promises.push(Promise.resolve([]));
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}
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if (want_holiday) {
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promises.push(this.prisma.shifts.findMany({
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where: {
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date: { gte: start, lte: end },
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...approved_filter,
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bank_code: { bank_code: holiday_code },
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timesheet: { employee: { company_code: { in: company_codes } } },
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},
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select: {
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date: true,
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start_time: true,
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end_time: true,
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bank_code: { select: { bank_code: true } },
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timesheet: {
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select: {
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employee: {
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select: {
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company_code: true,
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external_payroll_id: true,
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user: { select: { first_name: true, last_name: true } },
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}
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},
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}
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},
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},
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}));
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} else {
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promises.push(Promise.resolve([]));
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}
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if (want_vacation) {
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promises.push(this.prisma.shifts.findMany({
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where: {
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date: { gte: start, lte: end },
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...approved_filter,
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bank_code: { bank_code: vacation_code },
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timesheet: { employee: { company_code: { in: company_codes } } },
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},
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select: {
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date: true,
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start_time: true,
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end_time: true,
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bank_code: { select: { bank_code: true } },
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timesheet: {
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select: {
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employee: {
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select: {
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company_code: true,
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external_payroll_id: true,
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user: { select: { first_name: true, last_name: true } },
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}
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},
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}
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},
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},
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}));
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} else {
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promises.push(Promise.resolve([]));
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}
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if (want_expense) {
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promises.push(this.prisma.expenses.findMany({
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where: {
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date: { gte: start, lte: end },
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...approved_filter,
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timesheet: { employee: { company_code: { in: company_codes } } },
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},
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select: {
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date: true,
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amount: true,
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bank_code: { select: { bank_code: true } },
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timesheet: {
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select: {
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employee: {
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select: {
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company_code: true,
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external_payroll_id: true,
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user: { select: { first_name: true, last_name: true } },
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}
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},
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}
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},
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},
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}));
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} else {
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promises.push(Promise.resolve([]));
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}
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//array of arrays
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const [base_shifts, holiday_shifts, vacation_shifts, expenses] = await Promise.all(promises);
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//mapping
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const rows: CsvRow[] = [];
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const map_shifts = (shift: any, is_holiday: boolean) => {
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const employee = shift.timesheet.employee;
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const week = this.computeWeekNumber(start, shift.date);
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return {
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company_code: employee.company_code,
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external_payroll_id: employee.external_payroll_id,
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full_name: `${employee.first_name} ${employee.last_name}`,
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bank_code: shift.bank_code?.bank_code ?? '',
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quantity_hours: this.computeHours(shift.start_time, shift.end_time),
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amount: undefined,
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week_number: week,
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pay_date: this.formatDate(end),
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holiday_date: is_holiday ? this.formatDate(shift.date) : '',
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} as CsvRow;
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};
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//final mapping of all shifts based filters
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for (const shift of base_shifts) rows.push(map_shifts(shift, false));
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for (const shift of holiday_shifts) rows.push(map_shifts(shift, true));
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for (const shift of vacation_shifts) rows.push(map_shifts(shift, false));
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for (const expense of expenses) {
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const employee = expense.timesheet.employee;
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const week = this.computeWeekNumber(start, expense.date);
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rows.push({
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company_code: employee.company_code,
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external_payroll_id: employee.external_payroll_id,
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full_name: `${employee.first_name} ${employee.last_name}`,
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bank_code: expense.bank_code?.bank_code ?? '',
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quantity_hours: undefined,
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amount: Number(expense.amount),
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week_number: week,
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pay_date: this.formatDate(end),
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holiday_date: '',
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})
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}
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//Final mapping and sorts
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rows.sort((a, b) => {
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if (a.external_payroll_id !== b.external_payroll_id) {
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return a.external_payroll_id - b.external_payroll_id;
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}
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const bk_code = String(a.bank_code).localeCompare(String(b.bank_code));
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if (bk_code !== 0) return bk_code;
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if (a.bank_code !== b.bank_code) return a.bank_code.localeCompare(b.bank_code);
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return 0;
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});
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return rows;
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}
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resolveHolidayTypeCode = async (holiday: string): Promise<string> => {
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const holiday_code = await this.prisma.bankCodes.findFirst({
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where: { type: holiday },
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select: {
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bank_code: true,
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},
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});
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if (!holiday_code) throw new BadRequestException('Missing Holiday bank code');
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return holiday_code.bank_code;
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}
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resolveVacationTypeCode = async (vacation: string): Promise<string> => {
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const vacation_code = await this.prisma.bankCodes.findFirst({
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where: { type: vacation },
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select: {
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bank_code: true,
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},
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});
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if (!vacation_code) throw new BadRequestException('Missing Vacation bank code');
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return vacation_code.bank_code;
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}
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resolveCompanyCodes(companies: { targo: boolean; solucom: boolean; }): number[] {
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const out: number[] = [];
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if (companies.targo) {
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const code_no = parseInt(process.env.TARGO_NO ?? '', 10);
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if (!Number.isFinite(code_no) || code_no <= 0) throw new BadRequestException('Invalid Targo code in env');
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out.push(code_no);
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}
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if (companies.solucom) {
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const code_no = parseInt(process.env.SOLUCOM_NO ?? '', 10);
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if (!Number.isFinite(code_no) || code_no <= 0) throw new BadRequestException('Invalid Solucom code in env');
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out.push(code_no);
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}
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return out;
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}
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//csv builder and "mise en page"
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generateCsv(rows: CsvRow[]): Buffer {
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const header = [
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'company_code',
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'external_payroll_id',
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'full_name',
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'bank_code',
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'quantity_hours',
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'amount',
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'week_number',
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'pay_date',
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'holiday_date',
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].join(',') + '\n';
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const body = rows.map(row => {
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const full_name = `${String(row.full_name).replace(/"/g, '""')}`;
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const quantity_hours = (typeof row.quantity_hours === 'number') ? row.quantity_hours.toFixed(2) : '';
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const amount = (typeof row.amount === 'number') ? row.amount.toFixed(2) : '';
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return [
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row.company_code,
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row.external_payroll_id,
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full_name,
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row.bank_code,
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quantity_hours,
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amount,
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row.week_number,
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row.pay_date,
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row.holiday_date ?? '',
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].join(',');
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}).join('\n');
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return Buffer.from('\uFEFF' + header + body, 'utf8');
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}
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private computeHours(start: Date, end: Date): number {
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const diffMs = end.getTime() - start.getTime();
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return +(diffMs / 1000 / 3600).toFixed(2);
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}
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private computeWeekNumber(start: Date, date: Date): number {
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const dayMS = 86400000;
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const days = Math.floor((this.toUTC(date).getTime() - this.toUTC(start).getTime()) / dayMS);
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return Math.floor(days / 7) + 1;
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}
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toUTC(date: Date) {
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return new Date(Date.UTC(date.getUTCFullYear(), date.getUTCMonth(), date.getUTCDate()));
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}
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private formatDate(d: Date): string {
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return d.toISOString().split('T')[0];
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}
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}
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