<template>
  <!-- #ifdef APP -->
  <scroll-view style="flex:1">
  <!-- #endif -->
    <page-head :title="title"></page-head>
    <view>
      <view class="uni-padding-wrap">
        <video class="video" :src="beforeCompressPath" :controls="true" :poster="beforeCoverImagePath"></video>
        <view class="uni-title">
          <text class="uni-subtitle-text">压缩前视频信息</text>
        </view>
        <text>{{beforeCompressVideoInfo}}</text>
        <video class="video" :src="afterCompressPath" :controls="true" :poster="afterCoverImagePath"></video>
        <view class="uni-title">
          <text class="uni-subtitle-text">压缩后视频信息</text>
        </view>
        <text>{{afterCompressVideoInfo}}</text>
        <view class="uni-btn-v">
          <button type="primary" @click="chooseVideo">从相册中选取待压缩的视频</button>
        </view>
        <view class="uni-btn-v">
          <button type="primary" @click="compressVideo">压缩视频</button>
        </view>
        <enum-data title="压缩质量" :items="qualityItemTypes" @change="onQualityChange"></enum-data>
        <view class="uni-common-mt">
          <text class="uni-title uni-title-text">相对于原视频的分辨率比例，取值范围(0, 1]</text>
          <slider :min="0.1" :max="1" :step="0.1" :show-value="true" @change="onResolutionChange"></slider>
        </view>
      </view>
    </view>
  <!-- #ifdef APP -->
  </scroll-view>
  <!-- #endif -->
</template>

<script>
  import { ItemType } from '@/components/enum-data/enum-data-types';
  type VideoInfoForTest = {
    width: number;
    height: number;
    isSizeReduce: boolean;
  }
  export default {
    data() {
      return {
        title: "compressVideo",
        beforeCompressVideoInfo: "",
        afterCompressVideoInfo: "",
        beforeCompressPath: "",
        afterCompressPath: "",
        beforeCoverImagePath: "",
        afterCoverImagePath: "",
        quality: null as string | null,
        bitrate: null as number | null,
        fps: null as number | null,
        resolution: null as number | null,
        qualityItemTypes: [{ "value": 0, "name": "low(低)" }, { "value": 1, "name": "medium(中)" }, { "value": 2, "name": "high(高)" }] as ItemType[],
        qualityItems: ["low", "medium", "high"],
        // 自动化测试
        videoInfoForTest: null as VideoInfoForTest | null,
        videoSrcForTest: '/static/test-video/10second-demo.mp4',
        videoSrcForTestWidth: 0,
        videoSrcForTestHeight: 0
      }
    },
    methods: {
      compressVideo() {
        if (this.beforeCompressPath == "") {
          uni.showToast({
            title: "请先选择视频",
            icon: "error"
          });
          return;
        }
        uni.showLoading({
          title: "视频压缩中"
        });
        uni.compressVideo({
          src: this.beforeCompressPath,
          quality: this.quality,
          resolution: this.resolution,
          success: (res) => {
            console.log("compressVideo success", JSON.stringify(res));
            this.afterCompressPath = res.tempFilePath;
            uni.showToast({
              title: "压缩成功",
              icon: null
            });
            uni.getVideoInfo({
              src: res.tempFilePath,
              success: (_res) => {
                this.afterCompressVideoInfo = `视频画面方向: ${_res.orientation}\n视频格式: ${_res.type}\n视频长度: ${_res.duration}s\n视频大小: ${_res.size}KB\n视频宽度: ${_res.width}\n视频高度: ${_res.height}\n视频帧率: ${_res.fps}fps\n视频码率: ${_res.bitrate}kbps`;
                // #ifdef APP-ANDROID || APP-IOS
                this.afterCompressVideoInfo = this.afterCompressVideoInfo + `\n视频字节大小: ${_res.byteSize}B\n视频首帧图片路径: ${_res.thumbTempFilePath}`
                if(_res.thumbTempFilePath != null) {
                this.afterCoverImagePath = _res.thumbTempFilePath!
                }
                // #endif
              }
            });
          },
          fail: (err) => {
            uni.showModal({
              title: "压缩视频失败",
              content: JSON.stringify(err),
              showCancel: false
            });
          },
          complete: (_) => {
            uni.hideLoading();
          }
        });
      },
      chooseVideo() {
        uni.chooseVideo({
          sourceType: ["album"],
          compressed: false,
          success: (res) => {
            this.beforeCompressPath = res.tempFilePath;
            uni.getVideoInfo({
              src: res.tempFilePath,
              success: (_res) => {
                this.beforeCompressVideoInfo = `视频画面方向: ${_res.orientation}\n视频格式: ${_res.type}\n视频长度: ${_res.duration}s\n视频大小: ${_res.size}KB\n视频宽度: ${_res.width}\n视频高度: ${_res.height}\n视频帧率: ${_res.fps}fps\n视频码率: ${_res.bitrate}kbps`;
                // #ifdef APP-ANDROID || APP-IOS
                this.beforeCompressVideoInfo = this.beforeCompressVideoInfo + `\n视频字节大小: ${_res.byteSize}B\n视频首帧图片路径: ${_res.thumbTempFilePath}`
                if(_res.thumbTempFilePath != null) {
                this.beforeCoverImagePath = _res.thumbTempFilePath!
                }
                // #endif
              }
            });
          }
        });
      },
      onQualityChange(value : number) {
        this.quality = this.qualityItems[value];
      },
      onResolutionChange(event : UniSliderChangeEvent) {
        this.resolution = event.detail.value;
      },
      testCompressVideo() {
        let beforeCompressSize : number, afterComoressSize : number;
        uni.compressVideo({
          src: this.videoSrcForTest,
          quality: 'medium',
          success: (res) => {
            uni.getVideoInfo({
              src: this.videoSrcForTest,
              success: (_res) => {
                beforeCompressSize = Math.trunc(_res.size);
                this.videoSrcForTestWidth = _res.width
                this.videoSrcForTestHeight = _res.height
                uni.getVideoInfo({
                  src: res.tempFilePath,
                  success: (__res) => {
                    afterComoressSize = Math.trunc(__res.size);
                    this.videoInfoForTest = {
                      "width": __res.width,
                      "height": __res.height,
                      "isSizeReduce": afterComoressSize < beforeCompressSize
                    } as VideoInfoForTest;
                  },
                  fail(err) {
                    console.log('>>>>>> 压缩失败', err.errMsg)
                  }
                });
              }
            });
          },
          fail: (_) => {
            this.videoInfoForTest = null;
          }
        });
      }
    }
  }
</script>

<style>
  .video {
    align-self: center;
  }

  .image-container {
    flex-direction: row;
  }
</style>
