<template>
  <ai-detail class="content-add" v-loading="isLoading">
    <template slot="title">
      <ai-title :title="params.id ? '编辑' + '课程' : '添加' + '课程'" isShowBack isShowBottomBorder @onBackClick="cancel(false)"></ai-title>
    </template>
    <template slot="content">
      <ai-card title="基本信息">
        <template #content>
          <el-form class="ai-form" :model="form" label-width="120px" ref="form">
            <el-form-item label="课程名称" style="width: 100%;" prop="title" :rules="[{required: true, message: '请输入标题', trigger: 'blur'}]">
              <el-input size="small" v-model="form.title" clearable placeholder="请输入..." :maxlength="50" :show-word-limit="true"></el-input>
            </el-form-item>
            <el-form-item prop="courseType" label="课程类型" :rules="[{required: true, message: '请选择课程类型', trigger: 'change'}]">
              <ai-select
                  v-model="form.courseType"
                  clearable
                  placeholder="请选择课程类型"
                  :selectList="dict.getDict('qjCourseType')">
              </ai-select>
            </el-form-item>
            <el-form-item prop="showIndex" label="排序" :rules="[{required: true, message: '请选择文章类型', trigger: 'change'}]">
              <el-input-number size="small" v-model="form.showIndex" :min="0"></el-input-number>
            </el-form-item>
            <el-form-item v-if="form.courseType === '0'" label="正文" prop="content" style="width: 100%;" :rules="[{required: true, message: '请输入内容', trigger: 'change'}]">
              <ai-editor v-model="form.content" :instance="instance"/>
            </el-form-item>
            <el-form-item v-if="form.courseType === '0' && !isHideCoverimg" label="封面图片" prop="pictureUrl" :rules="[{required: true, message: '请上传封面图片', trigger: 'change'}]"
                          style="width: 100%;">
              <ai-uploader
                  :instance="instance"
                  isShowTip
                  v-model="form.pictureUrl"
                  :limit="1"
                  :cropOps="cropOps"
                  is-crop>
                <template slot="tips">
                  <p>最多上传1张图片,单个文件最大10MB，支持jpg、jpeg、png格式</p>
                  <p>图片比例：1.6：1</p>
                </template>
              </ai-uploader>
            </el-form-item>
            <el-form-item v-if="form.courseType==1" label="腾讯视频ID" class="w100">
              <el-input v-model="form.videoId" clearable placeholder="请从腾讯视频创作号上获取对应视频id"/>
            </el-form-item>
            <el-form-item v-if="form.courseType==='1'&&!!form.videoId" label="视频时长" class="w100">
              <el-input type="number" v-model="form.duration" clearable placeholder="输入视频时长(单位:秒)"/>
            </el-form-item>
            <el-form-item v-if="form.courseType==='1'&&!form.videoId" label="视频" prop="videoUrl" style="width: 100%;" :rules="[{required: true, message: '请上传视频', trigger: 'change'}]">
              <el-upload :show-file-list="false" ref="upload1" action :http-request="submitUpload" :accept="accept" :limit="1">
                <div class="video" v-if="!form.videoUrl.length">
                  <div class="icon">
                    <ai-icon type="svg" icon="iconVideo"/>
                    <span>上传视频</span>
                  </div>
                  <span class="tips">支持mp4格式，单个文件最大100MB</span>
                </div>
              </el-upload>
              <video class="video-com" style="width:100%; height:100%; object-fit: fill;" muted
                     :src="form.videoUrl[0].url" controls="controls" v-if="form.videoUrl.length"></video>
              <el-upload :show-file-list="false" ref="upload2" action :http-request="submitUpload" :accept="accept"
                         :limit="1" v-if="form.videoUrl.length">
                <el-button style="margin-top: 10px;">重新选择</el-button>
              </el-upload>
            </el-form-item>
            <el-form-item label="视频封面" prop="pictureUrl" style="width: 100%;" v-if="form.courseType === '1'" :rules="[{required: true, message: '请上传视频封面', trigger: 'change'}]">
              <ai-uploader
                  :instance="instance"
                  isShowTip
                  v-model="form.pictureUrl"
                  :limit="1"
                  :cropOps="cropOps"
                  is-crop>
                <template slot="tips">
                  <p>最多上传1张图片,单个文件最大10MB，支持jpg、jpeg、png格式</p>
                  <p>图片比例：1.6：1</p>
                </template>
              </ai-uploader>
            </el-form-item>
          </el-form>
        </template>
      </ai-card>
    </template>
    <template #footer>
      <el-button @click="cancel">取消</el-button>
      <el-button type="primary" :loading="isLoading" @click="confirm">提交</el-button>
    </template>
  </ai-detail>
</template>

<script>
import mp4box from 'mp4box'

export default {
  name: 'Add',

  props: {
    instance: Function,
    dict: Object,
    params: Object
  },
  data() {
    return {
      info: {},
      accept: '.mp4',
      form: {
        title: '',
        content: '',
        showIndex: '',
        videoUrl: [],
        pictureUrl: [],
        courseType: '0',
        duration: ''
      },
      isLoading: false,
      cropOps: {
        width: "336px",
        height: "210px"
      },
      id: '',
      contentTypeList: [
        {
          name: '图文',
          value: '0'
        },
        {
          name: '视频',
          value: '1'
        }
      ],
      isHideCoverimg: false,
      cateList: [],
      needExamine: '0'
    }
  },

  created() {
    this.dict.load('qjCourseType').then(() => {
      if (this.params && this.params.id) {
        this.getInfo(this.params.id)
      }
    })
  },

  methods: {
    getInfo(id) {
      this.instance.post(`/app/appcourseinfo/queryDetailById?id=${id}`).then(res => {
        if (res.code === 0) {
          this.form = res.data
          this.form.pictureUrl = res.data.pictureUrl ? [{
            url: res.data.pictureUrl
          }] : []
          this.form.videoUrl = res.data.videoUrl ? [{
            url: res.data.videoUrl
          }] : []
        }
      })
    },

    onChange() {
      this.form.videoUrl = []
    },

    submitUpload(file) {
      this.$refs['upload1']?.clearFiles();
      this.$refs['upload2']?.clearFiles();
      this.$refs['ruleForm']?.clearValidate('videoFile');
      const fileType = file.file.name.split(".")[1];
      const size = file.file.size / 1024 / 1024 > 100;
      let mp4boxfile = mp4box.createFile();
      const reader = new FileReader();
      reader.readAsArrayBuffer(file.file);
      reader.onload = (e) => {
        const arrayBuffer = e.target.result;
        arrayBuffer.fileStart = 0;
        mp4boxfile.appendBuffer(arrayBuffer);
      };
      mp4boxfile.onReady = (info) => {
        let codec = info.mime.match(/codecs="(\S*),/)[1]
        // if (codec.indexOf('avc') === -1) {
        //   return this.$message.error("视频编码格式不支持")
        // }

        if (size) {
          return this.$message.error("视频大小不能超过100M");
        }

        if (fileType && this.accept.indexOf(fileType.toLocaleLowerCase()) > -1) {
          let formData = new FormData()
          formData.append('file', file.file);
          this.isLoading = true
          this.instance.post(`/admin/file/addVideo1`, formData).then(res => {
            if (res && res.data) {
              let videoList = res.data[0].split(";")
              this.form.duration = res.data[2]

              this.form.videoUrl = [{
                id: videoList[1],
                url: videoList[0]
              }]
              this.form.pictureUrl = [{
                id: res.data[1].split(";")[1],
                url: res.data[1].split(";")[0]
              }]
            }

            this.isLoading = false
          }).catch(() => {
            this.isLoading = false
          })
        } else {
          return this.$message.error("视频格式错误")
        }
      }
    },

    confirm() {
      this.$refs.form.validate((valid) => {
        if (valid) {
          this.isLoading = true
          this.instance.post(`/app/appcourseinfo/addOrUpdate`, {
            ...this.form,
            videoUrl: this.form.courseType === '1' ? this.form.videoUrl[0]?.url : '',
            pictureUrl: this.form.pictureUrl.length ? this.form.pictureUrl[0]?.url : ''
          }).then(res => {
            if (res.code == 0) {
              this.$message.success('提交成功')
              setTimeout(() => {
                this.cancel(true)
              }, 600)
            } else {
              this.isLoading = false
            }
          }).catch(() => {
            this.isLoading = false
          })
        }
      })
    },

    cancel(isRefresh) {
      this.$emit('change', {
        type: 'List',
        isRefresh: !!isRefresh
      })
    }
  }
}
</script>

<style scoped lang="scss">
.content-add {
  .video {
    width: 640px;
    height: 360px;
    border-radius: 4px;
    border: 1px dashed #D0D4DC;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;

    .icon {
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;

      span:nth-child(2) {
        display: inline-block;
        font-size: 16px;
        color: #333333;
        line-height: 30px;
      }

      .iconfont {
        display: inline-block;
        font-size: 40px;
        color: #2266FF;
      }
    }

    .tips {
      display: inline-block;
      font-size: 12px;
      color: #999999;
      line-height: 26px;
    }
  }

  .video-com {
    width: 640px;
    height: 360px;
    background: rgba(0, 0, 0, 0.5);
    border-radius: 2px;
    border: 1px solid #D0D4DC;
    margin-top: -40px;
  }
}
</style>
