<template>
  <ion-page>
    <Header title="文件夹" :onBack="() => window.history.back()" />
    <div class="folder-page-container">
      <div class="search-container">
        <ion-icon :icon="search" class="search-icon"></ion-icon>
        <ion-input placeholder="搜索文件夹..." :value="searchQuery" @ionChange="e => setSearchQuery(e.detail.value)" class="search-input"></ion-input>
        <ion-button v-if="searchQuery.length > 0" fill="clear" @click="() => setSearchQuery('')">
          <ion-icon :icon="closeCircle" class="clear-icon"></ion-icon>
        </ion-button>
      </div>
    </div>
    <ion-content>
      <ion-list class="folder-list">
        <FolderManage
          :allCount="allNotesCount"
          :starredCount="starredNotesCount"
          :trashCount="trashNotesCount"
          :archiveCount="archiveCount"
          :selectedFolder="selectedFolder"
          :onAllClick="() => handleFolderPress('all')"
          :onStarredClick="() => handleFolderPress('starred')"
          :onTrashClick="() => handleFolderPress('trash')"
          :onArchiveClick="() => handleFolderPress('archive')" />
      </ion-list>
    </ion-content>
  </ion-page>
</template>

<script setup>
import { ref, computed, onMounted } from 'vue'
import { useRouter } from 'vue-router'
import { useAppStore } from '../stores/useAppStore'
import { search, closeCircle } from 'ionicons/icons'
import FolderManage from '../components/FolderManage.vue'
import Header from '../components/Header.vue'

const store = useAppStore()
const router = useRouter()

// 加载初始数据
onMounted(() => {
  store.loadData()
})

const searchQuery = ref('')
const selectedFolder = ref('all')

// 计算每个文件夹中的便签数量
// 遍历所有自定义文件夹，统计每个文件夹中的便签数量
const foldersWithCount = computed(() => {
  return store.folders.map(folder => {
    const noteCount = store.notes.filter(note => note.folderId === folder.id).length
    return {
      ...folder,
      noteCount,
    }
  })
})

// 添加默认文件夹（全部便签、加星便签、回收站）到列表开头
// 计算全部便签数量
const allNotesCount = computed(() => store.notes.length)
// 计算加星便签数量
const starredNotesCount = computed(() => store.notes.filter(note => note.isStarred).length)
// 回收站便签数量（暂未实现完整功能）
const trashNotesCount = 0
// 归档便签数量（暂未实现完整功能）
const archiveCount = 0

// 合并默认文件夹和自定义文件夹
const foldersWithAllNotes = computed(() => {
  return [
    { id: 'all', name: '全部便签', noteCount: allNotesCount.value, createdAt: new Date() },
    { id: 'starred', name: '加星便签', noteCount: starredNotesCount.value, createdAt: new Date() },
    { id: 'trash', name: '回收站', noteCount: trashNotesCount, createdAt: new Date() },
    ...foldersWithCount.value,
  ]
})

const handleFolderPress = folderId => {
  // 更新选中的文件夹状态
  selectedFolder.value = folderId
  // 使用vue-router导航回便签列表页面，并传递文件夹参数
  router.push(`/notes?folder=${folderId}`)
}

// 处理添加文件夹按钮点击事件
// 在完整实现中，这里会打开文件夹创建对话框
const handleAddFolder = () => {
  console.log('Add folder pressed')
}

// 处理搜索功能
// 在完整实现中，这里会根据搜索关键词过滤文件夹
const handleSearch = () => {
  console.log('Search for:', searchQuery.value)
}

const handleBackPress = () => {
  router.back()
}

// 根据搜索关键词过滤文件夹
// 将文件夹名称转换为小写进行模糊匹配
const filteredFolders = computed(() => {
  return foldersWithAllNotes.value.filter(folder => folder.name.toLowerCase().includes(searchQuery.value.toLowerCase()))
})

const setSearchQuery = value => {
  searchQuery.value = value
}
</script>

<style scoped>
.folder-page-container {
  padding: 0.625rem;
  background-color: var(--background);
  touch-action: pan-y;
}

.search-container {
  display: flex;
  align-items: center;
  background-color: var(--search-bar-background);
  border-radius: 0.5rem;
  padding: 0 0.625rem;
}

.search-icon {
  font-size: 1.25rem;
  color: var(--text-tertiary);
}

.search-input {
  --padding-start: 0.625rem;
  --padding-end: 0.625rem;
  flex: 1;
  font-size: 1rem;
  color: var(--text-primary);
}

.clear-icon {
  font-size: 1.25rem;
  color: var(--text-tertiary);
}

.folder-list {
  background-color: var(--background);
  padding: 0 1rem;
  --ion-item-background: var(--background);
}
</style>
