// import { TimesheetsArchive } from "@prisma/client";
// import { PrismaService } from "src/prisma/prisma.service";

// export class TimesheetArchiveService {
//     constructor(private readonly prisma: PrismaService){}

//     async archiveOld(): Promise<void> {
//         //calcul du cutoff pour archivation
//         const cutoff = new Date();
//         cutoff.setMonth(cutoff.getMonth() - 6)

//         await this.prisma.$transaction(async transaction => {
//             //fetches all timesheets to cutoff
//             const oldSheets = await transaction.timesheets.findMany({
//                 where: { shift: { some: { date: { lt: cutoff } } },
//                 },
//                 select: {
//                     id: true,
//                     employee_id: true,
//                     is_approved: true,
//                 },
//             });
//             if( oldSheets.length === 0) return;

//             //preping data for archivation
//             const archiveDate = oldSheets.map(sheet => ({
//                 timesheet_id: sheet.id,
//                 employee_id: sheet.employee_id,
//                 is_approved: sheet.is_approved,
//             }));

//             //copying data from timesheets table to archive table
//             await transaction.timesheetsArchive.createMany({ data: archiveDate });

//             //removing data from timesheets table
//             await transaction.timesheets.deleteMany({ where: { id: { in: oldSheets.map(s => s.id) } } });
//         });
//     }

//       //fetches all archived timesheets
//       async findAllArchived(): Promise<TimesheetsArchive[]> {
//         return this.prisma.timesheetsArchive.findMany();
//       }
    
//       //fetches an archived timesheet
//       async findOneArchived(id: number): Promise<TimesheetsArchive> {
//         return this.prisma.timesheetsArchive.findUniqueOrThrow({ where: { id } });
//       }
// }