import { dbGlobal } from "drizzle-pkg/lib/db";
import { users } from "drizzle-pkg/lib/schema/auth";
import { and, count, desc, eq, like, or, asc } from "drizzle-orm";

export default defineWrappedResponseHandler(async (event) => {
  const query = getQuery(event);
  const page = query.page ? Number(query.page) : 1;
  const pageSize = query.pageSize ? Number(query.pageSize) : 10;
  const search = query.search as string | undefined;
  const status = query.status as string | undefined;
  const role = query.role as string | undefined;
  const sortBy = query.sortBy as string | undefined;
  const sortOrder = query.sortOrder as string | undefined;

  const offset = (page - 1) * pageSize;
  const searchPattern = search ? `%${search}%` : undefined;

  // Build conditions array
  const conditions: any[] = [];

  if (searchPattern) {
    conditions.push(
      or(
        like(users.username, searchPattern),
        like(users.email, searchPattern),
        like(users.nickname, searchPattern),
      )
    );
  }

  if (status) {
    conditions.push(eq(users.status, status));
  }

  if (role) {
    conditions.push(eq(users.role, role));
  }

  const whereClause = conditions.length > 0 ? and(...conditions) : undefined;

  // Build orderBy
  const orderColumn = sortBy === "username" ? users.username : users.createdAt;
  const orderDirection = sortOrder === "asc" ? asc(orderColumn) : desc(orderColumn);

  const [totalResult] = await dbGlobal
    .select({ total: count() })
    .from(users)
    .where(whereClause);

  const list = await dbGlobal
    .select({
      id: users.id,
      username: users.username,
      email: users.email,
      nickname: users.nickname,
      avatar: users.avatar,
      role: users.role,
      status: users.status,
      createdAt: users.createdAt,
    })
    .from(users)
    .where(whereClause)
    .orderBy(orderDirection)
    .limit(pageSize)
    .offset(offset);

  return R.success({
    list,
    total: totalResult?.total ?? 0,
    page,
    pageSize,
    totalPages: Math.ceil((totalResult?.total ?? 0) / pageSize),
  });
});