<template>
  <div class="webpage-input">
    <div class="title">{{ lang.ssInsertLearn }}</div>
    <div class="description">{{ lang.ssPickLearn }}</div>
    
    <!-- 当列表为空时显示上传提示 -->
    <div v-if="webpageList.length === 0" class="empty-state">
      <div class="empty-icon">📚</div>
      <div class="empty-title">{{ lang.ssNoLearn }}</div>
      <div class="empty-desc">{{ lang.ssNeedUpload }}</div>
    </div>
    
    <!-- 当有内容时显示列表 -->
    <div v-else class="webpage-list">
      <div 
        v-for="(webpage, index) in webpageList" 
        :key="index"
        class="webpage-item"
        :class="{ active: selectedIndex === index }"
        @click="toggleWebpageSelection(index)"
      >
        <div class="webpage-info">
          <div class="webpage-title">
            <span class="type-tag" :class="getTypeClass(webpage.type)">{{ getTypeLabel(webpage.type) }}</span>
            {{ webpage.title }}
          </div>
          <div class="webpage-url">{{ webpage.url }}</div>
        </div>
        <div class="webpage-status">
          <div v-if="selectedIndex === index" class="selected-icon">✓</div>
        </div>
      </div>
    </div>
    
    <div class="btns">
      <Button @click="emit('close')" style="margin-right: 10px;">{{ lang.ssCancel }}</Button>
      <Button 
        v-if="webpageList.length > 0"
        type="primary" 
        @click="insertWebpage()"
        :disabled="selectedIndex === null"
      >
        {{ lang.ssConfirm }}
      </Button>
    </div>
  </div>
</template>

<script lang="ts" setup>
import { ref } from 'vue'
import message from '@/utils/message'
import Button from '@/components/Button.vue'
import { lang } from '@/main'

interface Webpage {
  type: number
  title: string
  url: string
}

interface Props {
  webpageList: Webpage[]
}

const props = withDefaults(defineProps<Props>(), {
  webpageList: () => []
})

const emit = defineEmits<{
  (event: 'insertWebpage', payload: { url: string, type: number }): void
  (event: 'close'): void
}>()

const selectedIndex = ref<number | null>(null)

const toggleWebpageSelection = (index: number) => {
  if (selectedIndex.value === index) {
    // 如果点击已选中的网页，则取消选择
    selectedIndex.value = null
  }
  else {
    // 否则选择新网页
    selectedIndex.value = index
  }
}

const insertWebpage = () => {
  if (selectedIndex.value === null) {
    return message.error(lang.ssPickWebFirst)
  }
  
  // 根据选中的index获取对应的链接
  const selectedWebpage = props.webpageList[selectedIndex.value]
  if (selectedWebpage) {
    emit('insertWebpage', { url: selectedWebpage.url, type: selectedWebpage.type })
  }
}

// 获取类型标签
const getTypeLabel = (type: number) => {
  const typeMap: Record<number, string> = {
    45: lang.ssChoiceQ,
    15: lang.ssQATest,
    72: lang.ssAiApp,
    73: lang.ssHPage,
    81: lang.ssHPage,
    74: lang.ssVideo,
    75: lang.lang == 'cn' ? lang.ssBiliVideo : lang.ssYouTube,
    76: lang.ssCreative,
    77: lang.ssEnglishSpeakingTool,
    78: lang.ssVote,
    79: lang.ssPhoto,
  }
  return typeMap[type] || lang.ssUnknown
}

// 获取类型样式类
const getTypeClass = (type: number) => {
  const classMap: Record<number, string> = {
    45: 'type-choice',
    15: 'type-question',
    72: 'type-ai',
    73: 'type-h5',
    74: 'type-video',
    75: 'type-bilibili',
    76: 'type-app-center'
  }
  return classMap[type] || 'type-default'
}
</script>

<style lang="scss" scoped>
.webpage-input {
  width: 480px;
  padding: 10px;
}

.title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
  color: #333;
}

.description {
  font-size: 14px;
  color: #666;
  margin-bottom: 15px;
}

.empty-state {
  text-align: center;
  padding: 40px 20px;
  color: #666;
}

.empty-icon {
  font-size: 48px;
  margin-bottom: 16px;
}

.empty-title {
  font-size: 16px;
  font-weight: 500;
  color: #333;
  margin-bottom: 8px;
}

.empty-desc {
  font-size: 14px;
  color: #999;
  margin-bottom: 24px;
}

.webpage-list {
  max-height: 250px; /* 设置最大高度，大约显示5个项目 */
  overflow-y: auto;
  margin: 15px 0;
  border: 1px solid #e0e0e0;
  border-radius: 6px;
  
  /* 自定义滚动条样式 */
  &::-webkit-scrollbar {
    width: 6px;
  }
  
  &::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 3px;
  }
  
  &::-webkit-scrollbar-thumb {
    background: #c1c1c1;
    border-radius: 3px;
    
    &:hover {
      background: #a8a8a8;
    }
  }
}

.webpage-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  border-bottom: 1px solid #f0f0f0;
  cursor: pointer;
  transition: all 0.2s ease;
  height: 50px; /* 固定每个项目的高度 */
  box-sizing: border-box;
  
  &:last-child {
    border-bottom: none;
  }
  
  &:hover {
    background-color: #f8f9fa;
  }
  
  &.active {
    background-color: #e3f2fd;
    border-left: 3px solid #2196f3;
  }
}

.webpage-info {
  flex: 1;
  min-width: 0;
}

.webpage-title {
  font-size: 14px;
  font-weight: 500;
  color: #333;
  margin-bottom: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  display: flex;
  align-items: center;
  gap: 8px;
}

.type-tag {
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 500;
  color: #fff;
  white-space: nowrap;
  flex-shrink: 0;
  
  &.type-choice {
    background-color: #4caf50;
  }
  
  &.type-question {
    background-color: #ff9800;
  }
  
  &.type-ai {
    background-color: #2196f3;
  }
  
  &.type-h5 {
    background-color: #9c27b0;
  }
  
  &.type-video {
    background-color: #f44336;
  }
  
  &.type-bilibili {
    background-color: #fb7299;
  }
  
  &.type-default {
    background-color: #757575;
  }
  
  &.type-app-center {
    background-color: #673ab7;
  }
}

.webpage-url {
  font-size: 12px;
  color: #666;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.webpage-status {
  margin-left: 12px;
}

.selected-icon {
  color: #2196f3;
  font-weight: bold;
  font-size: 16px;
}

.btns {
  margin-top: 15px;
  text-align: right;
}
</style> 