import React, { useState, useEffect } from 'react';
import { Table, Button, Modal, Form, Input, message } from 'antd';
import { PlusOutlined, EditOutlined, DeleteOutlined, EyeOutlined } from '@ant-design/icons';
import { customerService } from '../services/customer.service';
import type { Customer } from '../services/customer.service';

const CustomerManagement: React.FC = () => {
  const [customers, setCustomers] = useState<Customer[]>([]);
  const [loading, setLoading] = useState(false);
  const [modalVisible, setModalVisible] = useState(false);
  const [modalType, setModalType] = useState<'create' | 'edit'>('create');
  const [currentCustomer, setCurrentCustomer] = useState<Customer | null>(null);
  const [form] = Form.useForm();

  const fetchCustomers = async () => {
    setLoading(true);
    try {
      const data = await customerService.getCustomers();
      setCustomers(data);
    } catch (error) {
      message.error('获取客户列表失败');
    } finally {
      setLoading(false);
    }
  };

  useEffect(() => {
    fetchCustomers();
  }, []);

  const handleCreate = () => {
    setModalType('create');
    setCurrentCustomer(null);
    form.resetFields();
    setModalVisible(true);
  };

  const handleEdit = (customer: Customer) => {
    setModalType('edit');
    setCurrentCustomer(customer);
    form.setFieldsValue(customer);
    setModalVisible(true);
  };

  const handleDelete = async (id: string) => {
    try {
      await customerService.deleteCustomer(id);
      message.success('删除成功');
      fetchCustomers();
    } catch (error) {
      message.error('删除失败');
    }
  };

  const handleSubmit = async () => {
    try {
      const values = await form.validateFields();
      if (modalType === 'create') {
        await customerService.createCustomer(values);
        message.success('创建成功');
      } else if (modalType === 'edit' && currentCustomer) {
        await customerService.updateCustomer(currentCustomer.id, values);
        message.success('更新成功');
      }
      setModalVisible(false);
      fetchCustomers();
    } catch (error) {
      message.error('操作失败');
    }
  };

  const columns = [
    {
      title: '客户名称',
      dataIndex: 'name',
      key: 'name',
    },
    {
      title: '联系人',
      dataIndex: 'contact_person',
      key: 'contact_person',
    },
    {
      title: '电话',
      dataIndex: 'phone',
      key: 'phone',
    },
    {
      title: '邮箱',
      dataIndex: 'email',
      key: 'email',
    },
    {
      title: '地址',
      dataIndex: 'address',
      key: 'address',
      ellipsis: true,
    },
    {
      title: '创建时间',
      dataIndex: 'created_at',
      key: 'created_at',
    },
    {
      title: '操作',
      key: 'action',
      render: (_: any, record: Customer) => (
        <div>
          <Button
            type="primary"
            icon={<EyeOutlined />}
            style={{ marginRight: 8 }}
            onClick={() => handleEdit(record)}
          >
            查看
          </Button>
          <Button
            icon={<EditOutlined />}
            style={{ marginRight: 8 }}
            onClick={() => handleEdit(record)}
          >
            编辑
          </Button>
          <Button
            danger
            icon={<DeleteOutlined />}
            onClick={() => handleDelete(record.id)}
          >
            删除
          </Button>
        </div>
      ),
    },
  ];

  return (
    <div>
      <div style={{ marginBottom: 16, display: 'flex', justifyContent: 'space-between', alignItems: 'center' }}>
        <h1>客户管理</h1>
        <Button type="primary" icon={<PlusOutlined />} onClick={handleCreate}>
          新增客户
        </Button>
      </div>
      <Table
        columns={columns}
        dataSource={customers}
        rowKey="id"
        loading={loading}
        pagination={{ pageSize: 10 }}
      />
      <Modal
        title={modalType === 'create' ? '新增客户' : '编辑客户'}
        open={modalVisible}
        onOk={handleSubmit}
        onCancel={() => setModalVisible(false)}
      >
        <Form form={form} layout="vertical">
          <Form.Item
            name="name"
            label="客户名称"
            rules={[{ required: true, message: '请输入客户名称' }]}
          >
            <Input placeholder="请输入客户名称" />
          </Form.Item>
          <Form.Item
            name="contact_person"
            label="联系人"
          >
            <Input placeholder="请输入联系人" />
          </Form.Item>
          <Form.Item
            name="phone"
            label="电话"
          >
            <Input placeholder="请输入电话" />
          </Form.Item>
          <Form.Item
            name="email"
            label="邮箱"
          >
            <Input placeholder="请输入邮箱" />
          </Form.Item>
          <Form.Item
            name="address"
            label="地址"
          >
            <Input.TextArea placeholder="请输入地址" rows={3} />
          </Form.Item>
        </Form>
      </Modal>
    </div>
  );
};

export default CustomerManagement;