import { PrismaClient, LeaveApprovalStatus, LeaveTypes } from '@prisma/client';

if (process.env.SKIP_LEAVE_REQUESTS === 'true') {
  console.log('??  Seed leave-requests ignoré (SKIP_LEAVE_REQUESTS=true)');
  process.exit(0);
}

const prisma = new PrismaClient();

function daysAgo(n: number) {
  const d = new Date();
  d.setUTCDate(d.getUTCDate() - n);
  d.setUTCHours(0, 0, 0, 0);
  return d;
}

async function main() {
  const employees = await prisma.employees.findMany({ select: { id: true } });
  if (!employees.length) {
    throw new Error('Aucun employé trouvé. Exécute le seed employees avant celui-ci.');
  }

  const leaveCodes = await prisma.bankCodes.findMany({
    where: { type: { in: ['SICK', 'VACATION', 'HOLIDAY'] } },
    select: { id: true, type: true },
  });
  if (!leaveCodes.length) {
    throw new Error("Aucun bank code trouvé avec type in ('SICK','VACATION','HOLIDAY'). Vérifie ta table bank_codes.");
  }

  const statuses = Object.values(LeaveApprovalStatus);
  const created = [] as Array<{ id: number; employee_id: number; leave_type: LeaveTypes; date: Date; comment: string; approval_status: LeaveApprovalStatus; requested_hours: number; payable_hours: number | null }>;

  const COUNT = 12;
  for (let i = 0; i < COUNT; i++) {
    const emp = employees[i % employees.length];
    const leaveCode = leaveCodes[Math.floor(Math.random() * leaveCodes.length)];

    const date = daysAgo(120 - i * 3);
    const status = statuses[(i + 2) % statuses.length];
    const requestedHours = 4 + (i % 5); // 4 ? 8 h
    const payableHours = status === LeaveApprovalStatus.APPROVED ? Math.min(requestedHours, 8) : null;

    const lr = await prisma.leaveRequests.create({
      data: {
        employee_id: emp.id,
        bank_code_id: leaveCode.id,
        leave_type: leaveCode.type as LeaveTypes,
        date,
        comment: `Past leave #${i + 1} (${leaveCode.type})`,
        approval_status: status,
        requested_hours: requestedHours,
        payable_hours: payableHours,
      },
    });

    created.push({
      id: lr.id,
      employee_id: lr.employee_id,
      leave_type: lr.leave_type,
      date: lr.date,
      comment: lr.comment,
      approval_status: lr.approval_status,
      requested_hours: requestedHours,
      payable_hours: payableHours,
    });
  }

  for (const lr of created) {
    await prisma.leaveRequestsArchive.create({
      data: {
        leave_request_id: lr.id,
        employee_id: lr.employee_id,
        leave_type: lr.leave_type,
        date: lr.date,
        comment: lr.comment,
        approval_status: lr.approval_status,
        requested_hours: lr.requested_hours,
        payable_hours: lr.payable_hours,
      },
    });
  }

  console.log(`? LeaveRequestsArchive: ${created.length} rows`);
}

main().finally(() => prisma.$disconnect());