<script lang="ts" setup>
import { ref, onMounted, computed } from 'vue'

// 类型定义
interface Article {
  id: number
  title: string
  time: number
}

interface NewsCategory {
  name: string
  articleList: Article[]
}

interface NewsApiResponse {
  code: string
  data: NewsCategory[]
}

// 响应式数据
const newsData = ref<NewsCategory[]>([])
const loading = ref(false)
const error = ref('')

// 计算属性 - 格式化时间
const formatTime = (timestamp: number): string => {
  const date = new Date(timestamp * 1000)
  const Y = date.getFullYear()
  const M = String(date.getMonth() + 1).padStart(2, '0')
  const D = String(date.getDate()).padStart(2, '0')
  const h = String(date.getHours()).padStart(2, '0')
  const m = String(date.getMinutes()).padStart(2, '0')
  return `${Y}-${M}-${D} ${h}:${m}`
}

// 获取新闻数据
const fetchNewsData = async (): Promise<void> => {
  loading.value = true
  error.value = ''
  
  try {
    const response = await fetch('https://article.yuxiit.com/Home/Article/articleList.html', {
      method: 'POST',
      headers: {
        'Content-Type': 'application/x-www-form-urlencoded',
      },
      body: 'p1_Num=10'
    })
    
    if (!response.ok) {
      throw new Error(`HTTP error! status: ${response.status}`)
    }
    
    const result: NewsApiResponse = await response.json()
    
    if (result.code === '10000') {
      newsData.value = result.data
    } else {
      throw new Error('API returned error code: ' + result.code)
    }
  } catch (err) {
    error.value = err instanceof Error ? err.message : '获取新闻数据失败'
    console.error('Error fetching news data:', err)
  } finally {
    loading.value = false
  }
}

// 获取文章链接
const getArticleLink = (articleId: number): string => {
  return `http://www.yuxiit.com/news/news_${articleId}.html`
}

// 获取显示的文章列表（每个分类显示前2篇文章，与原来jQuery版本保持一致）
const getDisplayArticles = (articles: Article[]): Article[] => {
  return articles.slice(0, 2)
}

onMounted(() => {
  fetchNewsData()
})
</script>

<template>
  <!--box3 新闻-->
  <div class="container">
    <!-- 标题区域 -->
    <div class="text-center">
      <div class="blank50"/>
      <div
          class="cBlack f_42 line42 marginB10 wow fadeInDown animated"
          style="visibility: visible; animation-name: fadeInDown;">
        开发资讯
      </div>
      <div class="cGray f_18 wow fadeInUp animated" style="visibility: visible; animation-name: fadeInUp;">
        NEWS
      </div>
      <div class="blank20"/>
      <div class="blank20"/>
    </div>

    <!-- 加载状态 -->
    <div v-if="loading" class="text-center">
      <div class="blank50"/>
      <div class="cGray f_18 loading-text">正在加载新闻...</div>
      <div class="blank50"/>
    </div>

    <!-- 错误状态 -->
    <div v-else-if="error" class="text-center">
      <div class="blank50"/>
      <div class="cRed f_18">加载失败: {{ error }}</div>
      <div class="blank20"/>
      <button 
        @click="fetchNewsData" 
        class="btn btn-primary"
        style="background-color: #007bff; color: white; border: none; padding: 10px 20px; border-radius: 4px; cursor: pointer;">
        重新加载
      </button>
      <div class="blank50"/>
    </div>

    <!-- 新闻分类列表 -->
    <div v-else class="row">
      <div
          v-for="(category, index) in newsData"
          :key="category.name"
          class="col-md-4 firstPageBox3Li wow fadeInDown animated active"
          :data-wow-delay="`${300 + index * 200}ms`"
          :style="`visibility: visible; animation-delay: ${300 + index * 200}ms; animation-name: fadeInDown;`">
        
        <!-- 分类标题 -->
        <div class="title f_22 cBlue text-center pointer" :title="category.name">
          {{ category.name }}
        </div>
        <hr>
        <div class="blank20"/>
        
        <!-- 文章列表 -->
        <ul>
          <li v-for="article in getDisplayArticles(category.articleList)" :key="article.id">
            <a rel="nofollow" target="_blank">
              <span class="pull-right"></span>
            </a>
            <a 
              :href="getArticleLink(article.id)"
              :title="article.title"
              target="_blank"
              class="cGray f_14">
              <span class="pull-right">{{ formatTime(article.time) }}</span>
              <span class="oneIn oneIn_1">{{ article.title }}</span>
              <div class="blank20"></div>
            </a>
          </li>
        </ul>
        
        <div class="blank50"/>
      </div>
    </div>

    <!-- 空状态 -->
    <div v-if="!loading && !error && newsData.length === 0" class="text-center">
      <div class="blank50"/>
      <div class="cGray f_18">暂无新闻数据</div>
      <div class="blank50"/>
    </div>
  </div>
</template>


<style scoped>
/* 文本截断样式 */
.line-clamp-2 {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* 错误状态样式 */
.cRed {
  color: #dc3545;
}

/* 按钮样式 */
.btn {
  display: inline-block;
  font-weight: 400;
  text-align: center;
  white-space: nowrap;
  vertical-align: middle;
  user-select: none;
  border: 1px solid transparent;
  padding: 0.375rem 0.75rem;
  font-size: 1rem;
  line-height: 1.5;
  border-radius: 0.25rem;
  transition: color 0.15s ease-in-out, background-color 0.15s ease-in-out, border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
  cursor: pointer;
}

.btn:hover {
  opacity: 0.9;
}

.btn-primary {
  color: #fff;
  background-color: #007bff;
  border-color: #007bff;
}

/* 加载状态动画 */
@keyframes pulse {
  0% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
  100% {
    opacity: 1;
  }
}

.loading-text {
  animation: pulse 1.5s ease-in-out infinite;
}

/* 文章列表样式优化 */
.firstPageBox3Li ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.firstPageBox3Li li {
  margin-bottom: 10px;
}

.firstPageBox3Li a {
  text-decoration: none;
  display: block;
  padding: 5px 0;
}

.firstPageBox3Li a:hover {
  text-decoration: underline;
}

/* 响应式调整 */
@media (max-width: 1024px) {
  .grid {
    gap: 1.5rem;
  }
  
  .firstPageBox3Li {
    margin-bottom: 2rem;
  }
}

@media (max-width: 768px) {
  .firstPageBox3Li {
    margin-bottom: 1.5rem;
  }
  
  .title {
    font-size: 18px !important;
  }
}
</style>