<template>
  <view class="uni-flex-item">
    <web-view id="web-view" class="uni-flex-item" :style="webViewStyle" :src="src"
      :webview-styles="webview_styles" :horizontalScrollBarAccess="horizontalScrollBarAccess" :verticalScrollBarAccess="verticalScrollBarAccess"
      :bounces="bounces" :disable-user-select-menu="disableUserSelectMenu" @message="message" @error="error" @loading="loading"
      @load="load" @download="download" @contentheightchange="contentheightchange" @touchstart="touchstart" @tap="tap">
    </web-view>
    <!-- #ifdef APP -->
    <view class="uni-padding-wrap uni-common-mt">
      <view class="uni-btn-v">
        <input class="uni-input" confirmType="go" placeholder="输入网址跳转" @confirm="confirm" maxlength="-1" />
      </view>
      <view class="uni-row uni-btn-v">
        <button class="uni-flex-item" type="primary" :disabled="!canGoBack" @click="back">后退</button>
        <button class="margin-left-5 uni-flex-item" type="primary" :disabled="!canGoForward"
          @click="forward">前进</button>
      </view>
      <view class="uni-row uni-btn-v">
        <button class="uni-flex-item" type="primary" @click="reload">重新加载</button>
        <button class="margin-left-5 uni-flex-item" type="primary" @click="stop">停止加载</button>
      </view>
      <view class="uni-row uni-btn-v">
        <button class="uni-flex-item" type="primary" @click="nativeToWeb">原生和Web通信</button>
        <!-- #ifdef APP-ANDROID || APP-IOS || APP-HARMONY -->
        <button class="margin-left-5 uni-flex-item" type="primary" @click="getContentHeight">获取内容高度</button>
        <!-- #endif -->
      </view>
      <view class="uni-row uni-btn-v">
        <button class="uni-flex-item" type="primary" @click="loadData">加载页面内容</button>
        <!-- 用于演示大尺寸平板中能用窄屏展示响应式内容 -->
        <button id="half-screen-toggle" class="margin-left-5 uni-flex-item" type="primary" @click="setHalfScreen">宽窄屏切换</button>
      </view>
      <view class="uni-btn-v">
        <navigator url="/pages/component/web-view/web-view-scroll">
          <button type="primary">scroll-view嵌套web-view</button>
        </navigator>
      </view>
      <!-- #ifdef APP-ANDROID || APP-HARMONY || APP-IOS -->
      <view class="uni-row uni-btn-v">
        <view class="uni-row uni-flex-item align-items-center">
          <text>显示横向滚动条</text>
          <switch :checked="true" @change="changeHorizontalScrollBarAccess"></switch>
        </view>
        <view class="uni-row uni-flex-item align-items-center">
          <text>显示竖向滚动条</text>
          <switch :checked="true" @change="changeVerticalScrollBarAccess"></switch>
        </view>
      </view>
      <view class="uni-row uni-btn-v">
        <view class="uni-row uni-flex-item align-items-center">
          <text>开启bounces</text>
          <switch :checked="true" @change="changeBounces"></switch>
          <!-- #ifdef APP-ANDROID || APP-IOS-->
          <text>禁用选择菜单</text>
          <switch :checked="false" @change="changeDisableUserSelectMenu"></switch>
          <!-- #endif -->
        </view>
      </view>
      <!-- #endif -->
      <!-- #ifdef APP-IOS -->
      <view class="uni-row uni-btn-v" v-if="isProd() === false">
        <view class="uni-row uni-flex-item align-items-center">
          <text>前进、后退功能在Windows端需要打自定义基座，MAC端需要配置Xcode环境后进行真机运行或者打自定义基座</text>
        </view>
      </view>
      <!-- #endif -->
    </view>
    <!-- #endif -->
    <!-- #ifdef APP-ANDROID || APP-IOS -->
    <view class="safe-area-inset-bottom"></view>
    <!-- #endif -->
  </view>
</template>

<script>
  // #ifdef APP
  import { canWebViewGoBack, canWebViewGoForward, hasNativeView } from '@/uni_modules/uts-get-native-view';
  // #endif
  let webviewElement =  null as UniWebViewElement | null
  export default {
    data() {
      return {
        src: 'https://www.dcloud.io',
        webview_styles: {
          progress: {
            color: '#FF3333'
          }
        },
        halfWindowMode:false,
        webviewContext: null as WebviewContext | null,
        loadError: false,
        horizontalScrollBarAccess: true,
        verticalScrollBarAccess: true,
        bounces: true,
        disableUserSelectMenu: false,
        canGoBack: false,
        canGoForward: false,
        // 自动化测试
        autoTest: false,
        eventLoading: null as UTSJSONObject | null,
        eventLoad: null as UTSJSONObject | null,
        eventError: null as UTSJSONObject | null,
        eventContentHeightChange: null as UTSJSONObject | null,
        pointerEvents: 'auto',
        isTouchEnable: false,
        loadingCount: 0
      }
    },
    computed:{
      fullScreen(){
        return !this.halfWindowMode
      },
      webViewStyle(){
        return {
          width: this.halfWindowMode?'50%':'100%',
          'pointer-events': this.pointerEvents
        }
      },
    },
    onReady() {
      // #ifdef APP
      // TODO web 实现createWebviewContext
      // this.webviewContext = uni.createWebviewContext('web-view', this)
      // NOTE 绑定到 this 上会被代理导致无法调用方法
      webviewElement = uni.getElementById('web-view') as UniWebViewElement //推荐使用element，功能更丰富
      // console.log('url: ',this.webviewElement?.getAttribute("src"));
      // this.webviewElement?.setAttribute("src","https://ext.dcloud.net.cn/")
      // #endif
    },
    onUnload() {
      webviewElement = null;
    },
    methods: {
      setHalfScreen(){
        this.halfWindowMode = !this.halfWindowMode
      },
      getPackageName() : string {
        let packageName : string = ""

        // #ifdef APP-IOS
        const res = uni.getAppBaseInfo();
        packageName = res.bundleId
        // #endif

        return packageName
      },
      isProd() : boolean {
        if (this.getPackageName() == 'io.dcloud.hellouniappx') {
          return true
        }
        return false
      },
      back() {
        webviewElement?.back();
      },
      forward() {
        webviewElement?.forward();
      },
      reload() {
        this.loadingCount = 0
        webviewElement?.reload();
      },
      stop() {
        webviewElement?.stop();
      },
      nativeToWeb() {
        webviewElement?.evalJS("alert('hello uni-app x')");
      },
      // #ifdef APP-ANDROID || APP-IOS || APP-HARMONY
      getContentHeight() : number {
        const height = webviewElement?.getContentHeight() ?? 0;
        console.log('contentHeight', height);
        if (!this.autoTest) {
          uni.showModal({
            content: ' 当前内容高度: ' + height,
            showCancel: false
          });
        }
        return height;
      },
      loadData() {
        webviewElement?.loadData({
          data: '<p><a href="https://www.dcloud.io/hbuilderx.html">HBuilderX</a><br/><img src="/unidoc/zh/uni@2x.png"></img><h1>HBuilderX，轻巧、极速，极客编辑器</h1><p style="color:red;"><small>HBuilderX，轻巧、极速，极客编辑器 </small><big>HBuilderX，轻巧、极速，极客编辑器</big><strong>HBuilderX，轻巧、极速，极客编辑器</strong><i>HBuilderX，轻巧、极速，极客编辑器 </i><u>HBuilderX，轻巧、极速，极客编辑器</u><del>HBuilderX，轻巧、极速，极客编辑器</del></p><h2>uni-app x，终极跨平台方案</h2>、<p style="background-color: yellow;"><small>uni-app x，终极跨平台方案 </small><big>uni-app x，终极跨平台方案</big><strong>uni-appx，终极跨平台方案 </strong><i>uni-app x，终极跨平台方案 </i><u>uni-app x，终极跨平台方案 </u><del>uni-appx，终极跨平台方案</del></p><h3>uniCloud，js serverless云服务</h3><p style="text-decoration: line-through;"><small>uniCloud，js serverless云服务 </small><big>uniCloud，jsserverless云服务</big><strong>uniCloud，js serverless云服务 </strong><i>uniCloud，js serverless云服务 </i><u>uniCloud，jsserverless云服务</u><del>uniCloud，js serverless云服务</del></p><h4>uts，大一统语言</h4><p style="text-align: center;"><small>uts，大一统语言 </small><big>uts，大一统语言 </big><strong>uts，大一统语言</strong><i>uts，大一统语言</i><u>uts，大一统语言 </u><del>uts，大一统语言</del></p><h5>uniMPSdk，让你的App具备小程序能力</h5><h6>uni-admin，开源、现成的全端管理后台</h6><ul><li style="color: red; text-align: left;">uni-app x，终极跨平台方案</li><li style="color: green; text-align: center;">uni-app x，终极跨平台方案</li><li style="color: blue; text-align: right;">uni-app x，终极跨平台方案</li></ul><a href="https://uniapp.dcloud.net.cn">uni-app</a><br/><img src="/unidoc/zh/uni@2x.png"></img></p>',
          baseURL: 'https://qiniu-web-assets.dcloud.net.cn'
        });
      },
      // #endif
      message(event : UniWebViewMessageEvent) {
        console.log(JSON.stringify(event.detail));
      },
      error(event : UniWebViewErrorEvent) {
        this.loadError = true
        console.log(JSON.stringify(event.detail));
        if (this.autoTest) {
          this.eventError = {
            "tagName": event.target?.tagName,
            "type": event.type,
            "errCode": event.detail.errCode,
            "errMsg": event.detail.errMsg,
            "url": event.detail.url,
            "fullUrl": event.detail.fullUrl,
            "src": event.detail.src
          };
        }
      },
      loading(event : UniWebViewLoadingEvent) {
        this.loadingCount ++
        console.log(JSON.stringify(event.detail));
        if (this.autoTest) {
          this.eventLoading = {
            "tagName": event.target?.tagName,
            "type": event.type,
            "src": event.detail.src
          };
        }
      },
      load(event : UniWebViewLoadEvent) {
        console.log(JSON.stringify(event.detail));
        // #ifdef APP
        this.canGoBack = canWebViewGoBack('web-view');
        this.canGoForward = canWebViewGoForward('web-view');
        // #endif
        if (this.autoTest) {
          this.eventLoad = {
            "tagName": event.target?.tagName,
            "type": event.type,
            "src": event.detail.src,
            "url": event.detail.url,
          };
        }
      },
      download(event : UniWebViewDownloadEvent) {
        console.log(JSON.stringify(event.detail));
        uni.showModal({
          content: "下载链接: " + event.detail.url + "\n文件大小: " + event.detail.contentLength / 1024 + "KB",
          showCancel: false
        });
      },
      contentheightchange(event : UniWebViewContentHeightChangeEvent) {
        console.log(JSON.stringify(event.detail));
        this.eventContentHeightChange = {
          "tagName": event.target?.tagName,
          "type": event.type,
          "isValidHeight": event.detail.height > 0
        };
      },
      confirm(event : UniInputConfirmEvent) {
        let url = event.detail.value;
        if (!url.startsWith('https://') && !url.startsWith('http://')) {
          url = 'https://' + url;
        }
        this.src = url;
      },
      changeHorizontalScrollBarAccess(event : UniSwitchChangeEvent) {
        this.horizontalScrollBarAccess = event.detail.value;
      },
      changeVerticalScrollBarAccess(event : UniSwitchChangeEvent) {
        this.verticalScrollBarAccess = event.detail.value;
      },
      changeBounces(event : UniSwitchChangeEvent) {
        this.bounces = event.detail.value;
      },
      changeDisableUserSelectMenu(event : UniSwitchChangeEvent) {
        this.disableUserSelectMenu = event.detail.value;
      },
      // 自动化测试
      touchstart(event : UniTouchEvent) {
        if (this.autoTest) {
          this.isTouchEnable = event.touches[0].clientX > 0 && event.touches[0].clientY > 0;
        }
      },
      tap(event : UniPointerEvent) {
        if (this.autoTest) {
          this.isTouchEnable = event.clientX > 0 && event.clientY > 0;
        }
      },
      //自动化测试专用
      checkNativeWebView() : boolean {
        // #ifdef APP
        return hasNativeView('web-view')
        // #endif
        // #ifdef WEB
        return true
        // #endif
      },
      checkLoadingCount() {
        this.loadingCount = 0
        webviewElement?.reload();
      }
    }
  }
</script>

<style>
  .margin-left-5 {
    margin-left: 5px;
  }

  .align-items-center {
    align-items: center;
  }

  .safe-area-inset-bottom {
    height: var(--uni-safe-area-inset-bottom);
  }
</style>