<template>
  <van-config-provider
    :theme="theme"
    :theme-vars="themeVars"
    class="app-provider"
  >
    <div class="app-root">
      <router-view v-slot="{ Component }">
        <keep-alive
          :include="cachedViews"
          :max="8"
        >
          <component
            :is="Component"
            :key="route.name"
          />
        </keep-alive>
      </router-view>
      <GlobalAddBill
        v-if="isShowAddBill"
        @success="handleAddTransactionSuccess"
      />

      <div
        v-if="needRefresh"
        class="update-toast"
        @click="updateServiceWorker"
      >
        <van-icon
          name="upgrade"
          class="update-icon"
        />
        <span>新版本可用，点击刷新</span>
      </div>

      <!-- 调试信息面板（检测 GlassBottomNav） -->
      <div
        v-if="showDebug"
        class="debug-panel"
      >
        <div class="debug-title">
          GlassBottomNav 调试信息
        </div>
        <div class="debug-section">
          <div class="debug-subtitle">
            容器检查 (.glass-nav-container)
          </div>
          <div
            class="debug-item"
            :style="{ color: debugInfo.containerExists ? '#81c784' : '#ff4d4f', fontWeight: 'bold' }"
          >
            元素存在: {{ debugInfo.containerExists ? '✓ 是' : '✗ 否' }}
          </div>
          <div class="debug-item">
            position: {{ debugInfo.containerPosition }}
          </div>
          <div class="debug-item">
            bottom (CSS): {{ debugInfo.containerBottomStyle }}
          </div>
          <div
            class="debug-item"
            :style="{ fontWeight: 'bold', color: '#ff9800' }"
          >
            bottom (实际): {{ debugInfo.containerRectBottom }}px
          </div>
          <div class="debug-item">
            width: {{ debugInfo.containerWidth }}px
          </div>
          <div class="debug-item">
            height: {{ debugInfo.containerHeight }}px
          </div>
          <div class="debug-item">
            z-index: {{ debugInfo.containerZIndex }}
          </div>
        </div>
        <div class="debug-section">
          <div class="debug-subtitle">
            药丸导航 (.nav-pill)
          </div>
          <div
            class="debug-item"
            :style="{ color: debugInfo.pillExists ? '#81c784' : '#ff4d4f', fontWeight: 'bold' }"
          >
            元素存在: {{ debugInfo.pillExists ? '✓ 是' : '✗ 否' }}
          </div>
          <div class="debug-item">
            width: {{ debugInfo.pillWidth }}px
          </div>
          <div class="debug-item">
            height: {{ debugInfo.pillHeight }}px
          </div>
          <div
            class="debug-item"
            :style="{ fontWeight: 'bold', color: '#ff9800' }"
          >
            bottom (实际): {{ debugInfo.pillRectBottom }}px
          </div>
        </div>
        <div class="debug-section">
          <div class="debug-subtitle">
            父容器 (.app-root)
          </div>
          <div class="debug-item">
            overflow: {{ debugInfo.appRootOverflow }}
          </div>
          <div class="debug-item">
            height: {{ debugInfo.appRootHeight }}px
          </div>
          <div class="debug-item">
            position: {{ debugInfo.appRootPosition }}
          </div>
        </div>
        <div class="debug-section">
          <div class="debug-subtitle">
            视口信息
          </div>
          <div class="debug-item">
            window.innerHeight: {{ debugInfo.windowHeight }}px
          </div>
          <div class="debug-item">
            --vh: {{ debugInfo.vhVar }}
          </div>
          <div class="debug-item">
            safe-area-bottom: {{ debugInfo.safeAreaBottom }}
          </div>
        </div>
        <div class="debug-section">
          <div class="debug-subtitle">
            结果
          </div>
          <div
            class="debug-item"
            :style="{ color: parseFloat(debugInfo.distanceFromBottom) < 2 ? '#81c784' : '#ff4d4f', fontWeight: 'bold', fontSize: '12px' }"
          >
            距离底部: {{ debugInfo.distanceFromBottom }}px
            {{ parseFloat(debugInfo.distanceFromBottom) < 2 ? '✓ 已贴底' : '✗ 未贴底' }}
          </div>
        </div>
        <button
          class="debug-close"
          @click="showDebug = false"
        >
          关闭
        </button>
      </div>
    </div>
  </van-config-provider>
</template>

<script setup>
import { RouterView, useRoute } from 'vue-router'
import { ref, onMounted, onUnmounted, computed, watch } from 'vue'
import { useMessageStore } from '@/stores/message'
import GlobalAddBill from '@/components/Global/GlobalAddBill.vue'
import '@/styles/common.css'
import { needRefresh, updateServiceWorker } from './registerServiceWorker'

const messageStore = useMessageStore()

// 定义需要缓存的页面组件名称
const cachedViews = ref([
  'CalendarV2', // 日历V2页面
  'CalendarView', // 日历V1页面
  'StatisticsView', // 统计页面
  'StatisticsV2View', // 统计V2页面
  'BalanceView', // 账单页面
  'BudgetView' // 预算页面
])

const updateVh = () => {
  const vh = window.innerHeight
  document.documentElement.style.setProperty('--vh', `${vh}px`)
}

// 修复 PWA 模式下键盘收起页面不回弹的问题
const handleFocusOut = () => {
  if (/(iPhone|iPad|iPod|iOS|Android)/i.test(navigator.userAgent)) {
    // 延迟一小段时间执行，确保键盘收起动作已开始
    setTimeout(() => {
      // 强制回到顶部
      window.scrollTo(0, 0)
      // 同时也触发一次高度更新
      updateVh()
    }, 100)
  }
}

onMounted(() => {
  updateVh()
  window.addEventListener('resize', updateVh)
  if (window.visualViewport) {
    window.visualViewport.addEventListener('resize', updateVh)
  }
  // 注册全局失去焦点监听
  document.addEventListener('focusout', handleFocusOut)
})

onUnmounted(() => {
  window.removeEventListener('resize', updateVh)
  if (window.visualViewport) {
    window.visualViewport.removeEventListener('resize', updateVh)
  }
  // 销毁监听
  document.removeEventListener('focusout', handleFocusOut)
})

const route = useRoute()
const theme = ref('light')

// Vant UI 主题变量映射
const themeVars = computed(() => {
  const vars = {
    navBarBackground: 'var(--bg-primary)',
    navBarTextColor: 'var(--text-primary)',
    cardBackground: 'var(--bg-secondary)',
    cellBackground: 'var(--bg-secondary)',
    background: 'var(--bg-primary)',
    background2: 'var(--bg-secondary)',
    textColor: 'var(--text-primary)',
    textColor2: 'var(--text-secondary)',
    borderColor: 'var(--bg-tertiary)',
    tabbarBackground: 'var(--bg-primary)'
  }
  return vars
})

// 检测系统深色模式
const updateTheme = () => {
  const isDark = window.matchMedia('(prefers-color-scheme: dark)').matches
  theme.value = isDark ? 'dark' : 'light'
  // 在文档根元素上设置 data-theme 属性，使 CSS 变量生效
  document.documentElement.setAttribute('data-theme', theme.value)
}

// 监听系统主题变化
let mediaQuery
onMounted(() => {
  updateTheme()
  mediaQuery = window.matchMedia('(prefers-color-scheme: dark)')
  mediaQuery.addEventListener('change', updateTheme)
})

setInterval(() => {
  messageStore.updateUnreadCount()
}, 60 * 1000) // 每60秒更新一次未读消息数

// 监听路由变化调整
watch(
  () => route.path,
  () => {
    messageStore.updateUnreadCount()
  }
)

const isShowAddBill = computed(() => {
  return route.path === '/' || route.path === '/balance' || route.path === '/message' || route.path === '/calendar' || route.path === '/calendar-v2'
})

onUnmounted(() => {
  if (mediaQuery) {
    mediaQuery.removeEventListener('change', updateTheme)
  }
})

const handleAddTransactionSuccess = () => {
  // 当添加交易成功时，通知当前页面刷新数据
  const event = new Event('transactions-changed')
  window.dispatchEvent(event)
}

// ===== 调试信息 =====
const showDebug = ref(true)
const debugInfo = ref({
  containerExists: false,
  containerPosition: '',
  containerBottomStyle: '',
  containerRectBottom: 0,
  containerWidth: 0,
  containerHeight: 0,
  containerZIndex: '',
  pillExists: false,
  pillWidth: 0,
  pillHeight: 0,
  pillRectBottom: 0,
  appRootOverflow: '',
  appRootHeight: 0,
  appRootPosition: '',
  windowHeight: 0,
  vhVar: '',
  safeAreaBottom: '',
  distanceFromBottom: '0'
})

const updateDebugInfo = () => {
  debugInfo.value.windowHeight = window.innerHeight
  debugInfo.value.vhVar = getComputedStyle(document.documentElement).getPropertyValue('--vh') || 'unset'

  // 安全区域
  const testDiv = document.createElement('div')
  testDiv.style.paddingBottom = 'env(safe-area-inset-bottom, 0px)'
  document.body.appendChild(testDiv)
  debugInfo.value.safeAreaBottom = getComputedStyle(testDiv).paddingBottom
  document.body.removeChild(testDiv)

  // .glass-nav-container
  const container = document.querySelector('.glass-nav-container')
  debugInfo.value.containerExists = !!container
  if (container) {
    const rect = container.getBoundingClientRect()
    const styles = getComputedStyle(container)
    debugInfo.value.containerPosition = styles.position
    debugInfo.value.containerBottomStyle = styles.bottom
    debugInfo.value.containerRectBottom = rect.bottom.toFixed(2)
    debugInfo.value.containerWidth = rect.width.toFixed(2)
    debugInfo.value.containerHeight = rect.height.toFixed(2)
    debugInfo.value.containerZIndex = styles.zIndex
  }

  // .nav-pill
  const pill = document.querySelector('.nav-pill')
  debugInfo.value.pillExists = !!pill
  if (pill) {
    const rect = pill.getBoundingClientRect()
    debugInfo.value.pillWidth = rect.width.toFixed(2)
    debugInfo.value.pillHeight = rect.height.toFixed(2)
    debugInfo.value.pillRectBottom = rect.bottom.toFixed(2)
  }

  // .app-root
  const appRoot = document.querySelector('.app-root')
  if (appRoot) {
    const styles = getComputedStyle(appRoot)
    const rect = appRoot.getBoundingClientRect()
    debugInfo.value.appRootOverflow = styles.overflow
    debugInfo.value.appRootHeight = rect.height.toFixed(2)
    debugInfo.value.appRootPosition = styles.position
  }

  // 距底部距离（取 container 或 pill 中更大的 bottom 值）
  const bottom = Math.max(
    parseFloat(debugInfo.value.containerRectBottom || 0),
    parseFloat(debugInfo.value.pillRectBottom || 0)
  )
  debugInfo.value.distanceFromBottom = (window.innerHeight - bottom).toFixed(2)
}

onMounted(() => {
  setTimeout(updateDebugInfo, 500)
  const debugInterval = setInterval(updateDebugInfo, 1000)
  onUnmounted(() => clearInterval(debugInterval))
})
</script>

<style scoped>
.app-provider {
  /* 使用准确的视口高度 CSS 变量 */
  height: var(--vh, 100vh);
  width: 100%;
  background-color: var(--van-background);
}

.app-root {
  height: 100%;
  width: 100%;
  position: relative;
  padding-top: max(0px, calc(env(safe-area-inset-top, 0px) * 0.75));
  box-sizing: border-box;
  overflow: hidden;
  background-color: var(--van-background);
}

.update-toast {
  position: fixed;
  bottom: 80px;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--van-primary-color);
  color: white;
  padding: 10px 20px;
  border-radius: 24px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  z-index: 2000;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  cursor: pointer;
  transition: all 0.3s ease;
}

.update-toast:active {
  transform: translateX(-50%) scale(0.95);
}

.update-icon {
  font-size: 18px;
}

/* 调试面板样式 */
.debug-panel {
  position: fixed;
  top: 50%;
  right: 10px;
  transform: translateY(-50%);
  background: rgba(0, 0, 0, 0.9);
  color: #fff;
  padding: 12px;
  border-radius: 8px;
  font-size: 10px;
  z-index: 9999;
  min-width: 240px;
  max-height: 80vh;
  overflow-y: auto;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
  font-family: 'Courier New', monospace;
}

.debug-title {
  font-weight: bold;
  margin-bottom: 10px;
  border-bottom: 2px solid rgba(255, 255, 255, 0.5);
  padding-bottom: 6px;
  font-size: 11px;
  color: #4fc3f7;
}

.debug-section {
  margin: 8px 0;
  padding: 6px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 4px;
  border-left: 3px solid #4fc3f7;
}

.debug-subtitle {
  font-weight: bold;
  margin-bottom: 4px;
  font-size: 10px;
  color: #81c784;
}

.debug-item {
  margin: 3px 0;
  line-height: 1.5;
  padding-left: 8px;
}

.debug-close {
  margin-top: 10px;
  padding: 6px 12px;
  background: linear-gradient(135deg, #ff4d4f, #ff7875);
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 11px;
  width: 100%;
  font-weight: bold;
  box-shadow: 0 2px 4px rgba(255, 77, 79, 0.3);
}

.debug-close:active {
  opacity: 0.8;
  transform: scale(0.98);
}
</style>
