import { Button, Card, Form, Input, Modal, Space, Table, Typography, message } from 'antd';
import { useEffect, useMemo, useState } from 'react';
import { api } from '../lib/api';

type UserRow = {
  id: string;
  username: string;
  nickname: string;
  email?: string;
  email_verified: boolean;
  phone?: string;
  role: number;
  created_at: string;
};

type ResetValues = {
  newPassword: string;
};

export function UsersPage() {
  const [loading, setLoading] = useState(false);
  const [rows, setRows] = useState<UserRow[]>([]);
  const [resetOpen, setResetOpen] = useState(false);
  const [resetUserId, setResetUserId] = useState<string | null>(null);
  const [resetForm] = Form.useForm<ResetValues>();

  const columns = useMemo(
    () => [
      { title: 'ID', dataIndex: 'id', key: 'id', width: 90 },
      { title: '用户名', dataIndex: 'username', key: 'username' },
      { title: '昵称', dataIndex: 'nickname', key: 'nickname' },
      { title: '邮箱', dataIndex: 'email', key: 'email' },
      {
        title: '邮箱验证',
        dataIndex: 'email_verified',
        key: 'email_verified',
        render: (v: boolean) => (v ? '已验证' : '未验证'),
        width: 100,
      },
      { title: '手机号', dataIndex: 'phone', key: 'phone' },
      { title: '角色', dataIndex: 'role', key: 'role', width: 80 },
      { title: '创建时间', dataIndex: 'created_at', key: 'created_at', width: 180 },
      {
        title: '操作',
        key: 'actions',
        width: 160,
        render: (_: any, row: UserRow) => (
          <Space>
            <Button
              size="small"
              onClick={() => {
                setResetUserId(row.id);
                resetForm.resetFields();
                setResetOpen(true);
              }}
            >
              重置密码
            </Button>
          </Space>
        ),
      },
    ],
    [resetForm],
  );

  const load = async () => {
    setLoading(true);
    try {
      const res = await api.listUsers(200, 0);
      const users = res?.data?.users || [];
      setRows(
        users.map((u: any) => ({
          id: u.id,
          username: u.username,
          nickname: u.nickname,
          email: u.email || undefined,
          email_verified: Boolean(u.email_verified),
          phone: u.phone || undefined,
          role: u.role,
          created_at: u.created_at,
        })),
      );
    } catch (e: any) {
      message.error(e?.message || '加载失败');
    } finally {
      setLoading(false);
    }
  };

  useEffect(() => {
    void load();
  }, []);

  const onResetOk = async () => {
    try {
      const values = await resetForm.validateFields();
      if (!resetUserId) return;

      await api.resetUserPassword(resetUserId, values.newPassword);
      message.success('密码已重置');
      setResetOpen(false);
    } catch (e: any) {
      if (e?.errorFields) return;
      message.error(e?.message || '重置失败');
    }
  };

  return (
    <Card>
      <Space direction="vertical" style={{ width: '100%' }} size={12}>
        <Space style={{ justifyContent: 'space-between', width: '100%' }}>
          <Typography.Title level={4} style={{ margin: 0 }}>
            用户管理
          </Typography.Title>
          <Button onClick={load} loading={loading}>
            刷新
          </Button>
        </Space>

        <Table
          rowKey="id"
          loading={loading}
          columns={columns as any}
          dataSource={rows}
          pagination={false}
        />
      </Space>

      <Modal
        title={`重置密码${resetUserId ? `（用户ID: ${resetUserId}）` : ''}`}
        open={resetOpen}
        onOk={onResetOk}
        onCancel={() => setResetOpen(false)}
        okText="确认"
        cancelText="取消"
      >
        <Form form={resetForm} layout="vertical">
          <Form.Item
            label="新密码"
            name="newPassword"
            rules={[
              { required: true, message: '请输入新密码' },
              { min: 8, message: '至少8位' },
              {
                validator: (_, v) => {
                  const hasLetter = /[a-zA-Z]/.test(v || '');
                  const hasNumber = /\d/.test(v || '');
                  if (!v) return Promise.resolve();
                  if (!hasLetter || !hasNumber) return Promise.reject(new Error('必须包含字母和数字'));
                  return Promise.resolve();
                },
              },
            ]}
          >
            <Input.Password placeholder="例如 NewPass1234" />
          </Form.Item>
        </Form>
      </Modal>
    </Card>
  );
}