/**
 * 验证规则编辑器
 */

import React from 'react';
import { Select, Input, InputNumber, Button, Space, Typography } from 'antd';
import { PlusOutlined, DeleteOutlined } from '@ant-design/icons';
import type { ValidationRule } from '../types';

const { Text } = Typography;

interface ValidationRuleEditorProps {
  value?: ValidationRule[];
  onChange?: (value: ValidationRule[]) => void;
}

const ValidationRuleEditor: React.FC<ValidationRuleEditorProps> = ({ value = [], onChange }) => {
  const handleAddRule = () => {
    const newRule: ValidationRule = {
      type: 'required',
      message: '',
      trigger: 'blur',
    };
    onChange?.([...value, newRule]);
  };

  const handleDeleteRule = (index: number) => {
    const newRules = value.filter((_, i) => i !== index);
    onChange?.(newRules);
  };

  const handleRuleChange = (index: number, field: keyof ValidationRule, fieldValue: any) => {
    const newRules = [...value];
    newRules[index] = { ...newRules[index], [field]: fieldValue };
    onChange?.(newRules);
  };

  const getRuleValueInput = (rule: ValidationRule, index: number) => {
    switch (rule.type) {
      case 'required':
        return null;
      case 'pattern':
        return (
          <Input
            placeholder="输入正则表达式，如：^[a-zA-Z0-9]+$"
            value={rule.value}
            onChange={(e) => handleRuleChange(index, 'value', e.target.value)}
          />
        );
      case 'min':
      case 'max':
      case 'minLength':
      case 'maxLength':
        return (
          <InputNumber
            style={{ width: '100%' }}
            placeholder={`请输入${rule.type === 'min' || rule.type === 'minLength' ? '最小' : '最大'}值`}
            value={rule.value}
            onChange={(val) => handleRuleChange(index, 'value', val)}
          />
        );
      case 'email':
      case 'url':
      case 'phone':
      case 'idCard':
        return null;
      case 'custom':
        return (
          <Input
            placeholder="输入自定义验证函数名"
            value={rule.value}
            onChange={(e) => handleRuleChange(index, 'value', e.target.value)}
          />
        );
      default:
        return null;
    }
  };

  return (
    <div>
      <div style={{ display: 'flex', justifyContent: 'space-between', alignItems: 'center', marginBottom: 12 }}>
        <Text strong>验证规则</Text>
        <Button type="dashed" size="small" icon={<PlusOutlined />} onClick={handleAddRule}>
          添加规则
        </Button>
      </div>

      {value.length === 0 ? (
        <div style={{ padding: '24px 0', textAlign: 'center', color: '#8c8c8c', fontSize: 12 }}>
          暂无验证规则，点击上方按钮添加
        </div>
      ) : (
        <Space direction="vertical" style={{ width: '100%' }} size="middle">
          {value.map((rule, index) => (
            <div
              key={index}
              style={{
                padding: 12,
                border: '1px solid #e8e8e8',
                borderRadius: 4,
                background: '#fafafa',
              }}
            >
              <div style={{ display: 'flex', justifyContent: 'space-between', marginBottom: 8 }}>
                <Text style={{ fontSize: 12, color: '#666' }}>规则 {index + 1}</Text>
                <Button
                  type="text"
                  size="small"
                  danger
                  icon={<DeleteOutlined />}
                  onClick={() => handleDeleteRule(index)}
                />
              </div>

              <Space direction="vertical" style={{ width: '100%' }} size="small">
                <div>
                  <Text style={{ fontSize: 12, marginBottom: 4, display: 'block' }}>验证类型</Text>
                  <Select
                    style={{ width: '100%' }}
                    value={rule.type}
                    onChange={(val) => handleRuleChange(index, 'type', val)}
                  >
                    <Select.Option value="required">必填</Select.Option>
                    <Select.Option value="pattern">正则表达式</Select.Option>
                    <Select.Option value="min">最小值</Select.Option>
                    <Select.Option value="max">最大值</Select.Option>
                    <Select.Option value="minLength">最小长度</Select.Option>
                    <Select.Option value="maxLength">最大长度</Select.Option>
                    <Select.Option value="email">邮箱格式</Select.Option>
                    <Select.Option value="url">URL格式</Select.Option>
                    <Select.Option value="phone">手机号格式</Select.Option>
                    <Select.Option value="idCard">身份证格式</Select.Option>
                    <Select.Option value="custom">自定义验证</Select.Option>
                  </Select>
                </div>

                {getRuleValueInput(rule, index) && (
                  <div>
                    <Text style={{ fontSize: 12, marginBottom: 4, display: 'block' }}>规则值</Text>
                    {getRuleValueInput(rule, index)}
                  </div>
                )}

                <div>
                  <Text style={{ fontSize: 12, marginBottom: 4, display: 'block' }}>错误提示</Text>
                  <Input
                    placeholder="请输入验证失败时的提示信息"
                    value={rule.message}
                    onChange={(e) => handleRuleChange(index, 'message', e.target.value)}
                  />
                </div>

                <div>
                  <Text style={{ fontSize: 12, marginBottom: 4, display: 'block' }}>触发时机</Text>
                  <Select
                    style={{ width: '100%' }}
                    value={rule.trigger}
                    onChange={(val) => handleRuleChange(index, 'trigger', val)}
                  >
                    <Select.Option value="blur">失去焦点</Select.Option>
                    <Select.Option value="change">值改变</Select.Option>
                  </Select>
                </div>
              </Space>
            </div>
          ))}
        </Space>
      )}
    </div>
  );
};

export default ValidationRuleEditor;