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

const prisma = new PrismaClient();
const BASE_PHONE = 1_100_000_000; // < 2_147_483_647

function emailFor(i: number) {
  return `user${i + 1}@example.test`;
}

async function main() {
  // 50 users total: 40 employees + 10 customers
  // Roles distribution for the 40 employees:
  // 1 ADMIN, 4 SUPERVISOR, 1 HR, 1 ACCOUNTING, 33 EMPLOYEE
  // 10 CUSTOMER (non-employees)
  const usersData: {
    first_name: string;
    last_name: string;
    email: string;
    phone_number: number;
    residence?: string | null;
    role: Roles;
  }[] = [];

  const firstNames = ['Alex','Sam','Chris','Jordan','Taylor','Morgan','Jamie','Robin','Avery','Casey'];
  const lastNames  = ['Smith','Johnson','Williams','Brown','Jones','Miller','Davis','Wilson','Taylor','Clark'];

  // helper to pick
  const pick = <T>(arr: T[]) => arr[Math.floor(Math.random() * arr.length)];

  const rolesForEmployees: Roles[] = [
    Roles.ADMIN,
    ...Array(4).fill(Roles.SUPERVISOR),
    Roles.HR,
    Roles.ACCOUNTING,
    ...Array(33).fill(Roles.EMPLOYEE),
  ];

  // 40 employees
  for (let i = 0; i < 40; i++) {
    const fn = pick(firstNames);
    const ln = pick(lastNames);
    usersData.push({
      first_name: fn,
      last_name: ln,
      email: emailFor(i),
      phone_number: BASE_PHONE + i,
      residence: Math.random() < 0.5 ? 'QC' : 'ON',
      role: rolesForEmployees[i],
    });
  }

  // 10 customers
  for (let i = 40; i < 50; i++) {
    const fn = pick(firstNames);
    const ln = pick(lastNames);
    usersData.push({
      first_name: fn,
      last_name: ln,
      email: emailFor(i),
      phone_number: BASE_PHONE + i,
      residence: Math.random() < 0.5 ? 'QC' : 'ON',
      role: Roles.CUSTOMER,
    });
  }

  await prisma.users.createMany({ data: usersData, skipDuplicates: true });
  console.log('✓ Users: 50 rows (40 employees, 10 customers)');
}

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