<template>
  <view style="flex:1;">
    <view id="statusBar" class="statusBar" v-if="statusBarArea.width > 0 && statusBarArea.height > 0"
      :style="{'width': statusBarArea.width,'height': statusBarArea.height}">
    </view>
    <view id="cutoutArea" class="cutoutArea" v-if="cutoutArea.length > 0" v-for="(item, _) in cutoutArea"
      :style="{'top': item.top,'left': item.left,'width': item.width,'height': item.height}"></view>
    <view id="safeArea" class="safeArea"
      :style="{'top': safeArea.top,'left': safeArea.left,'width': safeArea.width,'height': safeArea.height}"></view>
    <view id="bottomNavigationIndicator" class="bottomNavigationIndicator"
      v-if="bottomNavigationIndicatorArea.width > 0 && bottomNavigationIndicatorArea.height > 0"
      :style="{'width': bottomNavigationIndicatorArea.width,'height': bottomNavigationIndicatorArea.height}"></view>
    <view style="flex: 1;justify-content: center;align-items: center;">
      <view v-if="statusBarArea.width > 0 && statusBarArea.height > 0" style="margin: 5px 0;">
        <text style="color: red;">系统状态栏区域</text>
      </view>
      <view v-if="cutoutArea.length > 0" style="margin: 5px 0;">
        <text style="color: orange;">摄像头区域</text>
      </view>
      <view style="margin: 5px 0;">
        <text style="color: green;">安全区域</text>
      </view>
      <view v-if="bottomNavigationIndicatorArea.width > 0 && bottomNavigationIndicatorArea.height > 0"
        style="margin: 5px 0;">
        <text style="color: blue;">系统导航栏区域</text>
      </view>
      <!-- <view style="flex-direction: row;align-items: center;margin: 5px 0">
        <text>显示系统状态栏</text>
        <switch :checked="isStatusBarShow" @change="statusBarChange"></switch>
      </view>
      <view style="flex-direction: row;align-items: center;margin: 5px 0">
        <text>显示系统导航栏</text>
        <switch :checked="isBottomNavigationIndicatorShow" @change="bottomNavigationIndicatorChange"></switch>
      </view> -->
    </view>
  </view>
</template>

<script setup>
  type StatusBarArea = {
    width : number,
    height : number
  }

  type CutoutArea = {
    top : number,
    left : number,
    width : number,
    height : number
  }

  type SafeArea = {
    top : number,
    left : number,
    width : number,
    height : number
  }

  type BottomNavigationIndicatorArea = {
    width : number,
    height : number
  }

  const statusBarArea = ref({ width: 0, height: 0 } as StatusBarArea);
  const cutoutArea = ref([] as CutoutArea[]);
  const safeArea = ref({ top: 0, left: 0, width: 0, height: 0 } as SafeArea);
  const bottomNavigationIndicatorArea = ref({ width: 0, height: 0 } as BottomNavigationIndicatorArea);
  const isStatusBarShow = ref(false);
  const isBottomNavigationIndicatorShow = ref(false);

  const getWindowInfo = () => {
    const info = uni.getWindowInfo();
    statusBarArea.value.width = info.windowWidth;
    statusBarArea.value.height = info.safeAreaInsets.top;
    cutoutArea.value.length = 0;
    (info.cutoutArea ?? []).forEach((item) => {
      cutoutArea.value.push({
        top: item.top,
        left: item.left,
        width: item.right - item.left,
        height: item.bottom - item.top
      } as CutoutArea);
    })
    safeArea.value.top = info.safeArea.top;
    safeArea.value.left = info.safeArea.left;
    safeArea.value.width = info.safeArea.width;
    safeArea.value.height = info.safeArea.height;
    bottomNavigationIndicatorArea.value.width = info.windowWidth;
    bottomNavigationIndicatorArea.value.height = info.safeAreaInsets.bottom;
  };

  const statusBarChange = (e : UniSwitchChangeEvent) => {
    const pages = getCurrentPages();
    pages[pages.length - 1].setPageStyle({
      'hideStatusBar': !e.detail.value,
    });
  };

  const bottomNavigationIndicatorChange = (e : UniSwitchChangeEvent) => {
    const pages = getCurrentPages();
    pages[pages.length - 1].setPageStyle({
      'hideBottomNavigationIndicator': !e.detail.value,
    });
  };

  onReady(() => {
    const pages = getCurrentPages();
    // #ifndef MP
    isStatusBarShow.value = !(pages[pages.length - 1].getPageStyle()['hideStatusBar'] as boolean);
    isBottomNavigationIndicatorShow.value = !(pages[pages.length - 1].getPageStyle()['hideBottomNavigationIndicator'] as boolean);
    // #endif
    getWindowInfo();
  });

  onResize((_ : OnResizeOptions) => {
    getWindowInfo();
  });
</script>

<style>
  .statusBar {
    position: absolute;
    border-style: solid;
    border-color: red;
    border-width: 4px;
  }

  .cutoutArea {
    position: absolute;
    border-style: solid;
    border-color: orange;
    border-width: 4px;
  }

  .safeArea {
    position: absolute;
    border-style: solid;
    border-color: green;
    border-width: 4px;
  }

  .bottomNavigationIndicator {
    position: absolute;
    bottom: 0;
    border-style: solid;
    border-color: blue;
    border-width: 4px;
  }
</style>