import React, { useState, useEffect } from 'react';
import type { EvaluationPoint } from '~/models/evaluation_points';
import type { EvaluationPointGroup } from '~/models/evaluation_point_groups';
interface BasicInfoProps {
  onChange?: (data: Record<string, unknown>) => void;
  initialData?: EvaluationPoint;
  evaluationPointGroups?: EvaluationPointGroup[];
  riskOptions?: Array<{value: string, label: string}>;
}

// 评查点基本信息组件
export function BasicInfo({ onChange, initialData, evaluationPointGroups = [], riskOptions = [] }: BasicInfoProps) {
  const [formData, setFormData] = useState<EvaluationPoint>({
    risk: 'medium', // 风险等级 默认中风险
    is_enabled: true, // 是否启用 默认启用
    references_laws: {
      name: '',
      articles: [],
      content: ''
    },
    ...(initialData || {}) // 合并初始数据
  });

  // 找到当前评查点类型对应的code
  const getCheckpointTypeCode = () => {
    if (!formData.evaluation_point_groups_pid) return "";
    
    const typeGroup = evaluationPointGroups.find(
      group => group.id === formData.evaluation_point_groups_pid && group.pid === 0
    );
    
    return typeGroup?.code || "";
  };

  // 评查点描述与法律依据 展开状态
  const [isDescExpanded, setIsDescExpanded] = useState(false);
  
  // 条款号临时输入字符串（不会触发自动分割）
  const [lawArticlesText, setLawArticlesText] = useState('');

  // 根据选择的评查点类型筛选可用的规则组
  const filteredRuleGroups = evaluationPointGroups.filter(group => 
    formData.evaluation_point_groups_pid && 
    group.pid === formData.evaluation_point_groups_pid && 
    group.is_enabled
  );

  // 获取评查点类型选项（pid=0的数据）
  const getCheckpointTypeOptions = () => {
    if (!evaluationPointGroups || evaluationPointGroups.length === 0) {
      return (
        <>
          <option value="">请选择评查点类型</option>
        </>
      );
    }
    
    const typeGroups = evaluationPointGroups.filter(group => group.pid === 0 && group.is_enabled);

    return (
      <>
        <option value="">请选择评查点类型</option>
        {typeGroups.map(group => (
          <option key={group.id} value={group.code}>
            {group.name}
          </option>
        ))}
      </>
    );
  };

  // 评查点描述与法律依据 展开状态
  const handleToggleDescription = () => {
    setIsDescExpanded(!isDescExpanded);
  };

  // 处理表单输入变化
  const handleInputChange = (e: React.ChangeEvent<HTMLInputElement | HTMLSelectElement | HTMLTextAreaElement>) => {
    const { id, value } = e.target;
    const newData = { ...formData };
    // 映射id到表单字段名
    switch(id) {
      case 'rule-name': 
        newData.name = value;
        break;
      case 'rule-code': 
        newData.code = value;
        break;
      case 'risk-level': 
        newData.risk = value;
        break;
      case 'is-enabled': 
        newData.is_enabled = value === 'true';
        break;
      case 'rule-description': 
        newData.description = value;
        break;
      case 'law-name':
        newData.references_laws = {
          ...formData.references_laws,
          name: value
        };
        break;
      case 'law-content':
        newData.references_laws = {
          ...formData.references_laws,
          content: value
        };
        break;
      case 'evaluation-point-group':
        newData.evaluation_point_groups_id = value ? parseInt(value) : null;
        break;
      case 'checkpoint-type':
        // 处理评查点类型选择
        if (value) {
          // 找到选中的类型组
          const selectedType = evaluationPointGroups.find(group => group.code === value && group.pid === 0);
          if (selectedType) {
            newData.evaluation_point_groups_pid = selectedType.id;
          }
        } else {
          newData.evaluation_point_groups_pid = null;
          newData.evaluation_point_groups_id = null; // 清空规则组选择
        }
        break;
    }
    
    setFormData(newData);
    
    if (onChange) {
      onChange(newData);
    }
  };

  // 处理条款号输入框变化
  const handleLawArticlesChange = (e: React.ChangeEvent<HTMLInputElement>) => {
    // 设置临时字符串状态，这样不会触发任何处理
    setLawArticlesText(e.target.value);
  };

  // 处理条款号输入框失去焦点
  const handleLawArticlesBlur = () => {
    if (!lawArticlesText) return;
    
    // 将输入的文本转换为数组
    const articles = lawArticlesText
      .split(',')
      .map(article => article.trim())
      .filter(article => article !== '');
    
    // 创建一个新的引用法律对象，保留现有字段
    const referencesLaws = {
      ...(formData.references_laws || {}),
      articles: articles.length > 0 ? articles : []
    };
    
    // 更新表单数据
    const newData = {
      ...formData,
      references_laws: referencesLaws
    };
    
    setFormData(newData);
    
    if (onChange) {
      onChange(newData);
    }
  };

  // 初始化条款号文本字段
  useEffect(() => {
    if (formData.references_laws?.articles && formData.references_laws.articles.length > 0) {
      setLawArticlesText(formData.references_laws.articles.join(','));
    }
  }, [formData.references_laws?.articles]);

  // 检查是否需要自动展开描述区域
  useEffect(() => {
    // 如果描述或法律依据相关字段有值，则自动展开
    if (
      formData.description || 
      formData.references_laws?.name || 
      (formData.references_laws?.articles && formData.references_laws.articles.length > 0) || 
      formData.references_laws?.content
    ) {
      setIsDescExpanded(true);
    }
  }, [formData]);

  // 注释掉自动选择规则组的逻辑，避免无限循环
  // 原因：此 useEffect 依赖 onChange 和 filteredRuleGroups，每次渲染都可能触发
  // 导致 onChange -> 父组件更新 -> BasicInfo 重新渲染 -> useEffect 再次触发 -> 无限循环
  // useEffect(() => {
  //   if (onChange && filteredRuleGroups.length === 1) {
  //     onChange({ evaluation_point_groups_id: filteredRuleGroups[0].id });
  //   }
  // }, [filteredRuleGroups, onChange]);

  return (
    <div className="ant-card">
      <div className="ant-card-header">
        <h3>基本信息</h3>
      </div>
      <div className="ant-card-body">
        <div className="grid grid-cols-1 md:grid-cols-3 gap-6">
          <div>
            <label className="form-label" htmlFor="rule-name">
              评查点名称 <span className="required-mark">*</span>
            </label>
            <input
              type="text"
              id="rule-name"
              className="form-input"
              placeholder="请输入评查点名称，简洁明了"
              value={formData.name}
              onChange={handleInputChange}
            />
            <div className="form-tip">请使用简洁明了的名称，不超过30个字符</div>
          </div>
          <div>
            <label className="form-label" htmlFor="rule-code">
              评查点编码 <span className="required-mark">*</span>
            </label>
            <input
              type="text"
              id="rule-code"
              className="form-input"
              placeholder="请输入评查点编码"
              value={formData.code}
              onChange={handleInputChange}
            />
            <div className="form-tip">用于系统标识的唯一编码</div>
          </div>
          <div>
            <label className="form-label" htmlFor="risk-level">
              风险等级： <span className="required-mark">*</span>
            </label>
            <select 
              id="risk-level" 
              className="form-select"
              value={formData.risk}
              onChange={handleInputChange}
            >
              {riskOptions.length > 0 ? (
                riskOptions.map(option => (
                  <option key={option.value} value={option.value}>
                    {option.label}
                  </option>
                ))
              ) : (
                <>
                  <option value="high">高风险</option>
                  <option value="medium">中风险</option>
                  <option value="low">低风险</option>
                </>
              )}
            </select>
            <div className="form-tip">请定义评查点的风险等级</div>
          </div>
          <div>
            <label className="form-label" htmlFor="checkpoint-type">
              评查点类型 <span className="required-mark">*</span>
            </label>
            <select 
              id="checkpoint-type" 
              className="form-select"
              value={getCheckpointTypeCode()}
              onChange={handleInputChange}
            >
              {getCheckpointTypeOptions()}
            </select>
            <div className="form-tip">评查点类型用于分类管理，便于规则统一调用</div>
          </div>
          <div>
            <label className="form-label" htmlFor="evaluation-point-group">
              所属规则组 <span className="required-mark">*</span>
            </label>
            <select 
              id="evaluation-point-group" 
              className={`form-select ${!formData.evaluation_point_groups_pid || filteredRuleGroups.length === 0 ? 'bg-gray-100 cursor-not-allowed' : ''}`}
              value={formData.evaluation_point_groups_id?.toString() || ""}
              onChange={handleInputChange}
              disabled={!formData.evaluation_point_groups_pid || filteredRuleGroups.length === 0}
            >
              <option value="">
                {!formData.evaluation_point_groups_pid ? "请先选择评查点类型" : 
                 filteredRuleGroups.length === 0 ? "该类型下暂无可用规则组" : 
                 "请选择规则组"}
              </option>
              {filteredRuleGroups.map(group => (
                <option key={group.id} value={group.id.toString()}>
                  {group.name}
                </option>
              ))}
            </select>
            <div className="form-tip">
              {!formData.evaluation_point_groups_pid ? "请先选择评查点类型" : 
               filteredRuleGroups.length === 0 ? "该类型下暂无可用规则组" : 
               "选择评查点所属的规则组"}
            </div>
          </div>
          <div>
            <label className="form-label" htmlFor="is-enabled">是否启用</label>
            <select 
              id="is-enabled" 
              className="form-select"
              value={formData.is_enabled ? 'true' : 'false'}
              onChange={handleInputChange}
            >
              <option value="true">是</option>
              <option value="false">否</option>
            </select>
            <div className="form-tip">创建后是否立即启用此评查点</div>
          </div>
        </div>
        
        <div className="mt-8">
          <div 
            className={`flex justify-between items-center cursor-pointer ${isDescExpanded ? 'expanded' : ''}`}
            onClick={handleToggleDescription}
            onKeyDown={(e) => {
              if (e.key === 'Enter' || e.key === ' ') {
                handleToggleDescription();
              }
            }}
            tabIndex={0}
            role="button"
          >
            <label className="form-label mb-0" htmlFor="description-section">评查点描述与法律依据</label>
            <i className={`ri-arrow-${isDescExpanded ? 'up' : 'down'}-s-line text-lg expand-icon`}></i>
          </div>
          
          <div className={`mt-2 ${isDescExpanded ? '' : 'hidden'}`} id="description-section">
            <div className="mb-4">
              <textarea
                id="rule-description"
                className="form-textarea"
                placeholder="请输入评查点的详细描述"
                style={{ minHeight: '80px' }}
                value={formData.description}
                onChange={handleInputChange}
              ></textarea>
              <div className="form-tip">详细描述有助于其他用户了解该评查点的用途</div>
            </div>

            {/* 引用法典输入区域 */}
            <div className="mb-4">
              <label className="form-label" htmlFor="law-section">引用法典</label>
              
              <div className="mb-3" id="law-section">
                <label className="text-sm text-gray-600 mb-1 block" htmlFor="law-name">法典名称</label>
                <input 
                  type="text" 
                  className="form-input" 
                  placeholder="例如：《中华人民共和国民法典》" 
                  id="law-name" 
                  value={formData.references_laws?.name || ''}
                  onChange={handleInputChange}
                />
              </div>
              
              <div className="mb-3">
                <label className="text-sm text-gray-600 mb-1 block" htmlFor="law-articles">
                  条款号 <span className="text-xs text-gray-400">(多个条款请用逗号分隔)</span>
                </label>
                <input 
                  type="text" 
                  className="form-input" 
                  placeholder="例如：第五百八十五条,第五百八十六条" 
                  id="law-articles" 
                  value={lawArticlesText}
                  onChange={handleLawArticlesChange}
                  onBlur={handleLawArticlesBlur}
                />
                <div className="form-tip">多个条款用逗号分隔，将自动转换为数组格式</div>
              </div>
              
              <div className="mb-4">
                <label className="text-sm text-gray-600 mb-1 block" htmlFor="law-content">条款内容</label>
                <textarea 
                  className="form-textarea" 
                  style={{ minHeight: '60px' }} 
                  placeholder="例如：当事人应当按照约定全面履行自己的义务。" 
                  id="law-content"
                  value={formData.references_laws?.content || ''}
                  onChange={handleInputChange}
                ></textarea>
              </div>
              
              <div className="p-3 bg-blue-50 border border-blue-200 rounded-md text-sm text-blue-700 mb-2">
                <i className="ri-information-line mr-1"></i> 引用的法律条文将在评查结果中显示，帮助用户理解评查规则的法律依据
              </div>
              
              {/* 预览区域 */}
              <div className="mt-3">
                <div className="text-sm font-medium mb-2">预览效果</div>
                <div className="law-reference">
                  <div className="law-reference-title" id="preview-law-name">
                    {formData.references_laws?.name || '《中华人民共和国民法典》'}
                  </div>
                  <div className="law-reference-articles" id="preview-law-articles">
                    {formData.references_laws?.articles && formData.references_laws.articles.length > 0 ? 
                      formData.references_laws.articles.map((article, index) => (
                        <span key={index} className="law-article">{article}</span>
                      )) : (
                      <>
                        <span className="law-article">第五百八十五条</span>
                        <span className="law-article">第五百八十六条</span>
                      </>
                    )}
                  </div>
                  <div className="law-reference-content" id="preview-law-content">
                    {formData.references_laws?.content || '当事人应当按照约定全面履行自己的义务。'}
                  </div>
                </div>
              </div>
            </div>
          </div>
        </div>
      </div>
    </div>
  );
}