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

const prisma = new PrismaClient();

async function ensureUser(name: string, username: string, deptName: string, employeeNo: string, passwordHash: string) {
  const existing = await prisma.user.findFirst({ where: { OR: [{ username }, { displayName: name }] } });
  if (existing) return existing.id;
  const dept =
    (await prisma.department.findFirst({ where: { name: deptName } })) ||
    (await prisma.department.findFirst({ where: { name: { contains: '研发' } } })) ||
    (await prisma.department.findFirst({ where: { parentId: { not: null } } }));
  if (!dept) throw new Error(`没有部门可挂 ${name}`);
  const empRole = await prisma.role.findFirst({ where: { code: 'employee' } });
  if (!empRole) throw new Error('没有 employee 角色');
  let emp = await prisma.employee.findFirst({ where: { OR: [{ name }, { employeeNo }] } });
  if (!emp) {
    emp = await prisma.employee.create({
      data: {
        name,
        employeeNo,
        departmentId: dept.id,
        title: '员工',
        employmentStatus: 'LEFT',
        remark: `OA 报销有此人（原部门 ${deptName}），人事花名册未导入，补建后挂单据，账号停用。`,
      },
    });
  }
  const user = await prisma.user.create({
    data: {
      username,
      displayName: name,
      passwordHash,
      status: 'DISABLED',
      employeeId: emp.id,
    },
  });
  await prisma.userRole.create({ data: { userId: user.id, roleId: empRole.id } });
  console.log('created leftover', name, user.id, 'dept', dept.name);
  return user.id;
}

async function main() {
  const admin = await prisma.user.findFirst({ where: { username: 'admin' } });
  if (!admin) throw new Error('no admin');
  await ensureUser('李乐菡', 'lilehan', '项目一部', 'E0115', admin.passwordHash);

  const users = await prisma.user.findMany();
  const byName = new Map(users.map((u) => [u.displayName, u.id]));
  const ALIAS: Record<string, string> = { 张靖妍: '张婧妍' };
  for (const [from, to] of Object.entries(ALIAS)) {
    const uid = byName.get(to);
    if (uid) byName.set(from, uid);
  }
  const expenses = await prisma.expenseClaim.findMany({ select: { id: true, remark: true, applicantId: true, status: true } });
  let n = 0;
  for (const e of expenses) {
    const name = (e.remark || '').split(' / ')[0]?.trim();
    if (!name || name === '系统管理员') continue;
    const uid = byName.get(name);
    if (!uid || uid === e.applicantId) continue;
    await prisma.expenseClaim.update({ where: { id: e.id }, data: { applicantId: uid } });
    n += 1;
  }
  const loans = await prisma.loanRecord.findMany({ select: { id: true, remark: true, applicantId: true } });
  let ln = 0;
  for (const e of loans) {
    const name = (e.remark || '').split(' / ')[0]?.trim();
    if (!name || name === '系统管理员') continue;
    const uid = byName.get(name);
    if (!uid || uid === e.applicantId) continue;
    await prisma.loanRecord.update({ where: { id: e.id }, data: { applicantId: uid } });
    ln += 1;
  }

  const approvers = await prisma.user.findMany({
    where: { status: 'ACTIVE', roles: { some: { role: { code: { in: ['admin', 'finance', 'owner'] } } } } },
  });
  const pendingExp = await prisma.expenseClaim.findMany({ where: { status: 'PENDING' } });
  const pendingLoan = await prisma.loanRecord.findMany({ where: { status: 'PENDING' } });
  let tasks = 0;
  for (const row of pendingExp) {
    for (const u of approvers) {
      const hit = await prisma.approvalTask.findFirst({
        where: { bizType: 'EXPENSE_APPROVAL', bizId: row.id, assigneeId: u.id, status: 'PENDING' },
      });
      if (hit) continue;
      await prisma.approvalTask.create({
        data: {
          title: `报销确认：${row.claimNo}`,
          bizType: 'EXPENSE_APPROVAL',
          bizId: row.id,
          assigneeId: u.id,
        },
      });
      tasks += 1;
    }
  }
  for (const row of pendingLoan) {
    for (const u of approvers) {
      const hit = await prisma.approvalTask.findFirst({
        where: { bizType: 'LOAN_APPROVAL', bizId: row.id, assigneeId: u.id, status: 'PENDING' },
      });
      if (hit) continue;
      await prisma.approvalTask.create({
        data: {
          title: `借款确认：${row.loanNo}`,
          bizType: 'LOAN_APPROVAL',
          bizId: row.id,
          assigneeId: u.id,
        },
      });
      tasks += 1;
    }
  }

  const left = await prisma.expenseClaim.count({ where: { applicantId: admin.id } });
  console.log(JSON.stringify({ rematchedExpenses: n, rematchedLoans: ln, approvalTasks: tasks, adminStillHolds: left }));
}

main()
  .catch((e) => {
    console.error(e);
    process.exit(1);
  })
  .finally(() => prisma.$disconnect());