import React, { useEffect, useState } from 'react';
import {
  Table,
  Button,
  Modal,
  Form,
  Input,
  Tag,
  Space,
  Popconfirm,
  message,
  Row,
  Col,
  Card,
} from 'antd';
import {
  PlusOutlined,
  EditOutlined,
  DeleteOutlined,
  CheckCircleOutlined,
  StopOutlined,
} from '@ant-design/icons';
import type { SystemConfig } from '../types/systemConfig';
import {
  getSystemConfigList,
  createSystemConfig,
  updateSystemConfig,
  deleteSystemConfig,
  updateSystemConfigStatus,
} from '../services/systemConfigApi';

export default function SystemConfigs() {
  const [loading, setLoading] = useState(false);
  const [list, setList] = useState<SystemConfig[]>([]);
  const [total, setTotal] = useState(0);
  const [page, setPage] = useState(1);
  const [size, setSize] = useState(10);
  const [editOpen, setEditOpen] = useState(false);
  const [editing, setEditing] = useState<SystemConfig | null>(null);
  const [createOpen, setCreateOpen] = useState(false);
  const [form] = Form.useForm();
  const [createForm] = Form.useForm();

  const fetchList = async () => {
    setLoading(true);
    try {
      const res = await getSystemConfigList({ page, size });
      setList(res?.data ?? []);
      setTotal(res?.total ?? 0);
    } catch (e) {
      message.error('获取列表失败');
    } finally {
      setLoading(false);
    }
  };

  useEffect(() => {
    fetchList();
  }, [page, size]);

  const openEdit = (config: SystemConfig) => {
    setEditing(config);
    form.setFieldsValue({
      name: config.name,
      value: config.value,
      type: config.type,
      desc: config.desc,
    });
    setEditOpen(true);
  };

  const submitEdit = async () => {
    try {
      const values = await form.validateFields();
      if (!editing) return;
      await updateSystemConfig(editing.id, values);
      message.success('更新成功');
      setEditOpen(false);
      fetchList();
    } catch (error) {
      message.error('更新失败');
    }
  };

  const openCreate = () => {
    createForm.resetFields();
    setCreateOpen(true);
  };

  const submitCreate = async () => {
    try {
      const values = await createForm.validateFields();
      await createSystemConfig(values);
      message.success('创建成功');
      setCreateOpen(false);
      fetchList();
    } catch (error: any) {
      message.error(error?.response?.data?.message || '创建失败');
    }
  };

  const handleDelete = async (config: SystemConfig) => {
    try {
      await deleteSystemConfig(config.id);
      message.success('删除成功');
      fetchList();
    } catch (error) {
      message.error('删除失败');
    }
  };

  const handleToggleStatus = async (config: SystemConfig) => {
    try {
      const newStatus = config.status === 1 ? 0 : 1;
      await updateSystemConfigStatus(config.id, { status: newStatus });
      message.success(newStatus === 1 ? '已启用' : '已禁用');
      fetchList();
    } catch (error) {
      message.error('状态更新失败');
    }
  };

  const columns = [
    {
      title: '配置标识',
      dataIndex: 'key',
      key: 'key',
      width: 200,
    },
    {
      title: '配置名称',
      dataIndex: 'name',
      key: 'name',
      width: 150,
    },
    {
      title: '配置值',
      dataIndex: 'value',
      key: 'value',
      ellipsis: true,
    },
    {
      title: '配置描述',
      dataIndex: 'desc',
      key: 'desc',
      ellipsis: true,
    },
    {
      title: '状态',
      dataIndex: 'status',
      key: 'status',
      width: 80,
      render: (value: number) =>
        value === 1 ? <Tag color="green">启用</Tag> : <Tag color="red">禁用</Tag>,
    },
    {
      title: '操作',
      key: 'action',
      width: 250,
      render: (_: any, config: SystemConfig) => (
        <Space>
          <Button type="link" icon={<EditOutlined />} onClick={() => openEdit(config)}>
            编辑
          </Button>
          <Button
            type="link"
            icon={config.status === 1 ? <StopOutlined /> : <CheckCircleOutlined />}
            onClick={() => handleToggleStatus(config)}
          >
            {config.status === 1 ? '禁用' : '启用'}
          </Button>
          <Popconfirm title="确定删除该配置？" onConfirm={() => handleDelete(config)}>
            <Button type="link" danger icon={<DeleteOutlined />}>
              删除
            </Button>
          </Popconfirm>
        </Space>
      ),
    },
  ];

  return (
    <div>
      <Row gutter={16} style={{ marginBottom: 16 }}>
        <Col span={24}>
          <Card>
            <div style={{ marginBottom: 16 }}>
              <Button type="primary" icon={<PlusOutlined />} onClick={openCreate}>
                新建配置
              </Button>
            </div>
            <Table
              dataSource={list}
              columns={columns}
              rowKey="id"
              loading={loading}
              pagination={{
                current: page,
                pageSize: size,
                total: total,
                onChange: (p, s) => {
                  setPage(p);
                  setSize(s);
                },
              }}
            />
          </Card>
        </Col>
      </Row>

      {/* 编辑弹窗 */}
      <Modal
        title="编辑配置"
        open={editOpen}
        onOk={submitEdit}
        onCancel={() => setEditOpen(false)}
        width={600}
      >
        <Form form={form} layout="vertical">
          <Form.Item
            name="name"
            label="配置名称"
            rules={[{ required: true, message: '请输入配置名称' }]}
          >
            <Input placeholder="请输入配置名称" />
          </Form.Item>
          <Form.Item
            name="value"
            label="配置值"
            rules={[{ required: true, message: '请输入配置值' }]}
          >
            <Input.TextArea rows={4} placeholder="请输入配置值" />
          </Form.Item>
          <Form.Item name="type" label="配置类型">
            <Input placeholder="请输入配置类型（如：string, int, bool, json）" />
          </Form.Item>
          <Form.Item name="desc" label="配置描述">
            <Input.TextArea rows={3} placeholder="请输入配置描述" />
          </Form.Item>
        </Form>
      </Modal>

      {/* 创建弹窗 */}
      <Modal
        title="新建配置"
        open={createOpen}
        onOk={submitCreate}
        onCancel={() => setCreateOpen(false)}
        width={600}
      >
        <Form form={createForm} layout="vertical">
          <Form.Item
            name="key"
            label="配置标识"
            rules={[{ required: true, message: '请输入配置标识' }]}
          >
            <Input placeholder="请输入配置标识（唯一，如：app_name）" />
          </Form.Item>
          <Form.Item
            name="name"
            label="配置名称"
            rules={[{ required: true, message: '请输入配置名称' }]}
          >
            <Input placeholder="请输入配置名称" />
          </Form.Item>
          <Form.Item
            name="value"
            label="配置值"
            rules={[{ required: true, message: '请输入配置值' }]}
          >
            <Input.TextArea rows={4} placeholder="请输入配置值" />
          </Form.Item>
          <Form.Item name="type" label="配置类型">
            <Input placeholder="请输入配置类型（如：string, int, bool, json）" />
          </Form.Item>
          <Form.Item name="desc" label="配置描述">
            <Input.TextArea rows={3} placeholder="请输入配置描述" />
          </Form.Item>
        </Form>
      </Modal>
    </div>
  );
}