118 lines
4.1 KiB
TypeScript
118 lines
4.1 KiB
TypeScript
import { PrismaClient as Prisma } from "@prisma/client";
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import { PrismaClient as PrismaLegacy } from "@prisma/client-legacy"
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import { toStringFromDate } from "src/common/utils/date-utils";
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type NewEmployee = {
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id: number;
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company_code: number;
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external_payroll_id: number;
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}
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type OldTimesheets = {
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id: string;
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start_date: Date | null;
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status: boolean | null;
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}
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const prisma_legacy = new PrismaLegacy({});
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const prisma_new = new Prisma({});
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export const extractOldTimesheets = async () => {
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const list_of_employees = await prisma_new.employees.findMany();
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for (let id = 1; id <= list_of_employees.length; id++) {
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const new_employee = await findOneNewEmployee(id);
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const old_employee_id = await findOneOldEmployee(new_employee);
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const old_timesheets = await findManyOldTimesheets(old_employee_id);
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await createManyNewTimesheets(old_timesheets, new_employee);
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console.log(`${old_timesheets.length} New Timesheets created in new DB for employee ${new_employee.id}`);
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}
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await prisma_legacy.$disconnect();
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await prisma_new.$disconnect();
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console.log('migration of timesheets finished')
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}
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const findOneNewEmployee = async (id: number): Promise<NewEmployee> => {
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const new_employee = await prisma_new.employees.findUnique({
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where: { id: id },
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select: {
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id: true,
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company_code: true,
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external_payroll_id: true,
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},
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});
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if (!new_employee) throw new Error(`New Employee with id ${id} not found`)
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return new_employee;
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}
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const findOneOldEmployee = async (new_employee: NewEmployee): Promise<string> => {
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const employee_number = new_employee.external_payroll_id.toString()
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const old_employee = await prisma_legacy.employees.findFirst({
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where: {
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company: new_employee.company_code,
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employee_number: employee_number,
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},
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select: {
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id: true,
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},
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});
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if (!old_employee) throw new Error(`Old Employee not found`);
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return old_employee.id;
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}
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const findManyOldTimesheets = async (old_employee_id: string) => {
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console.log('trying to find old timesheets ...');
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const old_timesheets = await prisma_legacy.time_sheets.findMany({
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where: { employee_id: old_employee_id },
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select: { id: true, start_date: true, status: true }
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});
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console.log(old_timesheets.length, 'old timesheets found')
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if (!old_timesheets) throw new Error(`old Timesheets not found for employee_id ${old_employee_id}`)
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return old_timesheets;
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}
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const createManyNewTimesheets = async (old_timesheets: OldTimesheets[], new_employee: NewEmployee) => {
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console.log(old_timesheets.length, ' timesheets ready for creation')
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for (const timesheet of old_timesheets) {
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if (timesheet.start_date == null) {
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console.warn(`start_date invalid for legacy timesheet ${timesheet.id}`);
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continue;
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}
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if (timesheet.status == null) {
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console.warn(`status null for legacy timesheet ${timesheet.id}`);
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continue;
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}
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try {
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console.log(`Timesheet with start_date: ${toStringFromDate(timesheet.start_date!)} for employee ${new_employee.id} created`)
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const new_timesheet = await prisma_new.timesheets.create({
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data: {
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employee_id: new_employee.id,
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start_date: timesheet.start_date,
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is_approved: timesheet.status,
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},
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});
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if (!new_timesheet) throw new Error(
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`Timesheet with start_date: ${toStringFromDate(timesheet.start_date!)} for employee ${new_employee.id} not created`
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);
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} catch (error) {
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throw new Error('An error occured during timesheets creation', error);
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}
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}
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}
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// extractOldTimesheets()
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// .then(() => {
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// console.log("Migration completed");
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// })
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// .catch((error) => {
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// console.error("Migration failed:", error);
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// })
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// .finally(async () => {
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// await prisma_legacy.$disconnect();
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// await prisma_new.$disconnect();
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// });
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