import type { MetaFunction, LoaderFunctionArgs } from '@remix-run/node';
import { useLoaderData, useNavigate } from '@remix-run/react';
import { useState } from 'react';
import styles from '~/styles/pages/contract-template.css?url';

export const links = () => [
  { rel: 'stylesheet', href: styles }
];

export const meta: MetaFunction<typeof loader> = ({ data }) => {
  return [
    { title: `${data?.template.title || '合同模板详情'} - 智慧法务` },
    { 
      name: 'description', 
      content: data?.template.description || '查看合同模板详细信息' 
    }
  ];
};

// 面包屑导航配置
export const handle = {
  breadcrumb: (data: { template: { title: string } }) => {
    return data?.template?.title || "模板详情";
  }
};

// 模拟详细数据
const getTemplateDetail = (id: string) => {
  const templates = {
    '1': {
      id: '1',
      title: '烟草产品销售合同（2023版）',
      type: '销售合同 · 标准版',
      description: '本模板是专为烟草行业设计的标准销售合同，严格遵循《烟草专卖法》等相关法律法规，涵盖了烟草产品销售过程中的各个关键环节。',
      updateTime: '2023年10月25日',
      useCount: 2156,
      rating: 4.9,
      fileSize: '245KB',
      scope: '烟草产品销售',
      legalBasis: '《合同法》《烟草专卖法》',
      templateCode: 'XS-2023-001',
      reviews: [
        {
          user: '李经理',
          rating: 5,
          comment: '模板非常专业，条款完整，符合行业规范。我们公司一直在使用这个模板，效果很好。',
          date: '2023-10-20'
        },
        {
          user: '王总',
          rating: 4,
          comment: '模板结构清晰，易于理解和使用。特别是违约责任条款写得很详细，对我们很有帮助。',
          date: '2023-10-18'
        }
      ],
      features: [
        { title: '法律合规', description: '严格遵循烟草行业法律法规，确保合同条款合法有效', icon: 'ri-shield-check-line', color: 'green' },
        { title: '条款完整', description: '涵盖销售全流程，条款结构完整，逻辑清晰', icon: 'ri-settings-3-line', color: 'blue' },
        { title: '易于定制', description: '模板化设计，可根据具体业务需求灵活调整', icon: 'ri-edit-line', color: 'purple' },
        { title: '行业标准', description: '符合烟草行业标准，被广泛使用和认可', icon: 'ri-award-line', color: 'orange' }
      ],
      structure: [
        { step: 1, title: '合同主体', description: '甲乙双方基本信息、资质证明' },
        { step: 2, title: '标的物条款', description: '产品名称、规格、数量、质量标准' },
        { step: 3, title: '价格与付款', description: '价格条款、付款方式、结算周期' },
        { step: 4, title: '交付与验收', description: '交付时间、地点、方式、验收标准' },
        { step: 5, title: '违约责任', description: '违约情形、责任承担、损失赔偿' },
        { step: 6, title: '争议解决', description: '争议处理方式、管辖法院' }
      ],
      preview: `
中文合同预览内容...

                        烟草产品销售合同
                    合同编号：_______________

甲方（销售方）：_________________________
地址：_____________________________________
法定代表人：_______________  联系电话：_______________
烟草专卖许可证号：_________________________

乙方（采购方）：_________________________
地址：_____________________________________
法定代表人：_______________  联系电话：_______________
烟草专卖零售许可证号：_____________________

根据《中华人民共和国合同法》、《中华人民共和国烟草专卖法》等相关法律法规，
甲乙双方在平等、自愿、公平、诚信的基础上，就烟草产品销售事宜达成如下协议：

第一条 标的物
1.1 产品名称：_________________________
1.2 产品规格：_________________________
1.3 产品数量：_________________________
1.4 产品单价：_________________________
1.5 合同总金额：_______________________

... 更多条款内容请下载完整模板查看 ...
      `
    }
  };
  
  return templates[id as keyof typeof templates] || null;
};

export async function loader({ params }: LoaderFunctionArgs) {
  const template = getTemplateDetail(params.id!);
  
  if (!template) {
    throw new Response('模板未找到', { status: 404 });
  }
  
  return { template };
}

export default function ContractTemplateDetail() {
  const { template } = useLoaderData<typeof loader>();
  const navigate = useNavigate();
  const [isFavorited, setIsFavorited] = useState(false);

  const handleBack = () => {
    navigate(-1);
  };

  const handleDownload = () => {
    console.log('下载模板:', template.id);
    // 这里应该是实际的下载逻辑
  };

  const handlePreview = () => {
    console.log('预览模板:', template.id);
    // 这里应该打开预览模态框或新页面
  };

  const handleFavorite = () => {
    setIsFavorited(!isFavorited);
    console.log('收藏状态:', !isFavorited);
  };

  const handleShare = () => {
    console.log('分享模板:', template.id);
    // 这里应该是分享功能
  };

  const renderStars = (rating: number) => {
    const stars = [];
    const fullStars = Math.floor(rating);
    
    for (let i = 0; i < 5; i++) {
      if (i < fullStars) {
        stars.push(<i key={i} className="ri-star-fill"></i>);
      } else {
        stars.push(<i key={i} className="ri-star-line"></i>);
      }
    }
    return stars;
  };

  return (
    <div className="contract-search-results">
      {/* 返回按钮 */}
      <div className="mb-6">
        <button 
          onClick={handleBack}
          className="flex items-center px-3 py-2 text-sm border border-gray-200 rounded-lg hover:border-primary-color transition-colors"
        >
          <i className="ri-arrow-left-line mr-2"></i>
          返回列表
        </button>
      </div>

      {/* 模板详情 */}
      <div className="template-detail max-w-4xl mx-auto">
        {/* 详情头部 */}
        <div className="detail-header bg-white rounded-xl p-8 mb-6 border border-gray-100">
          <div className="flex justify-between items-start mb-4">
            <div className="template-type">{template.type}</div>
            <div className="flex items-center gap-2">
              <div className="flex items-center gap-1 text-yellow-500">
                {renderStars(template.rating)}
                <span className="text-sm ml-1">{template.rating} (156评价)</span>
              </div>
            </div>
          </div>
          
          <h1 className="detail-title text-3xl font-semibold mb-6">{template.title}</h1>
          
          <div className="detail-meta grid grid-cols-2 md:grid-cols-3 gap-4 mb-6">
            <div className="meta-item">
              <span className="meta-label text-gray-500">模板编号：</span>
              <span>{template.templateCode}</span>
            </div>
            <div className="meta-item">
              <span className="meta-label text-gray-500">更新时间：</span>
              <span>{template.updateTime}</span>
            </div>
            <div className="meta-item">
              <span className="meta-label text-gray-500">使用次数：</span>
              <span>{template.useCount.toLocaleString()}次</span>
            </div>
            <div className="meta-item">
              <span className="meta-label text-gray-500">文件大小：</span>
              <span>{template.fileSize}</span>
            </div>
            <div className="meta-item">
              <span className="meta-label text-gray-500">适用范围：</span>
              <span>{template.scope}</span>
            </div>
            <div className="meta-item">
              <span className="meta-label text-gray-500">法律依据：</span>
              <span>{template.legalBasis}</span>
            </div>
          </div>
          
          <div className="detail-actions flex gap-3">
            <button 
              className="detail-btn primary bg-primary text-white px-6 py-3 rounded-lg flex items-center gap-2 hover:bg-primary-hover"
              onClick={handleDownload}
            >
              <i className="ri-download-line"></i>
              立即下载使用
            </button>
            <button 
              className="detail-btn secondary bg-white border border-gray-200 px-6 py-3 rounded-lg flex items-center gap-2 hover:border-primary"
              onClick={handlePreview}
            >
              <i className="ri-eye-line"></i>
              在线预览
            </button>
            <button 
              className={`detail-btn secondary bg-white border border-gray-200 px-6 py-3 rounded-lg flex items-center gap-2 hover:border-primary ${isFavorited ? 'text-yellow-500' : ''}`}
              onClick={handleFavorite}
            >
              <i className={isFavorited ? 'ri-star-fill' : 'ri-star-line'}></i>
              收藏模板
            </button>
            <button 
              className="detail-btn secondary bg-white border border-gray-200 px-6 py-3 rounded-lg flex items-center gap-2 hover:border-primary"
              onClick={handleShare}
            >
              <i className="ri-share-line"></i>
              分享
            </button>
          </div>
        </div>
        
        {/* 详情内容 */}
        <div className="detail-content bg-white rounded-xl p-8 border border-gray-100">
          {/* 模板简介 */}
          <div className="content-section mb-8">
            <h3 className="section-title text-xl font-semibold mb-4">模板简介</h3>
            <p className="text-gray-600 leading-relaxed">
              {template.description}模板包含完整的合同条款结构，
              包括合同主体、标的物、价格条款、交付方式、付款条件、违约责任、争议解决等核心内容。
              适用于各类烟草产品的销售业务，能够有效保护交易双方的合法权益。
            </p>
          </div>
          
          {/* 主要特点 */}
          <div className="content-section mb-8">
            <h3 className="section-title text-xl font-semibold mb-4">主要特点</h3>
            <div className="grid grid-cols-1 md:grid-cols-2 gap-4">
              {template.features.map((feature, index) => (
                <div key={index} className={`bg-${feature.color}-50 p-4 rounded-lg border border-${feature.color}-200`}>
                  <div className="flex items-center mb-2">
                    <i className={`${feature.icon} text-${feature.color}-600 mr-2`}></i>
                    <span className="font-medium">{feature.title}</span>
                  </div>
                  <p className="text-sm text-gray-600">{feature.description}</p>
                </div>
              ))}
            </div>
          </div>
          
          {/* 合同条款结构 */}
          <div className="content-section mb-8">
            <h3 className="section-title text-xl font-semibold mb-4">合同条款结构</h3>
            <div className="space-y-3">
              {template.structure.map((item) => (
                <div key={item.step} className="flex items-center p-3 bg-gray-50 rounded-lg">
                  <div className="w-8 h-8 bg-primary text-white rounded-full flex items-center justify-center text-sm font-medium mr-3">
                    {item.step}
                  </div>
                  <div>
                    <div className="font-medium">{item.title}</div>
                    <div className="text-sm text-gray-600">{item.description}</div>
                  </div>
                </div>
              ))}
            </div>
          </div>
          
          {/* 合同预览 */}
          <div className="content-section mb-8">
            <h3 className="section-title text-xl font-semibold mb-4">合同预览</h3>
            <div className="content-preview bg-gray-50 rounded-lg p-6 font-mono text-sm line-height-6 border-l-4 border-primary">
              <pre className="whitespace-pre-wrap">{template.preview}</pre>
            </div>
          </div>
          
          {/* 用户评价 */}
          <div className="content-section">
            <h3 className="section-title text-xl font-semibold mb-4">用户评价</h3>
            <div className="space-y-4">
              {template.reviews.map((review, index) => (
                <div key={index} className="border border-gray-200 rounded-lg p-4">
                  <div className="flex items-center justify-between mb-2">
                    <div className="flex items-center gap-2">
                      <div className="w-8 h-8 bg-blue-500 text-white rounded-full flex items-center justify-center text-sm font-medium">
                        {review.user[0]}
                      </div>
                      <span className="font-medium">{review.user}</span>
                      <div className="flex items-center gap-1 text-yellow-500">
                        {renderStars(review.rating)}
                      </div>
                    </div>
                    <span className="text-sm text-gray-500">{review.date}</span>
                  </div>
                  <p className="text-gray-600">{review.comment}</p>
                </div>
              ))}
            </div>
          </div>
        </div>
      </div>
    </div>
  );
}