<template>
  <ai-detail class="AppQuestionBank-add" v-loading="isLoading">
    <template slot="title">
      <ai-title :title="params.id ? '编辑' + '试题库' : '添加' + '试题库'" 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="题目描述" style="width: 100%;" prop="title" :rules="[{required: true, message: '请输入标题', trigger: 'blur'}]">
              <el-input size="small" type="textarea" :rows="4" v-model="form.title" clearable placeholder="请输入..." :maxlength="500" :show-word-limit="true"></el-input>
            </el-form-item>
            <el-form-item prop="type" label="题目类型" :rules="[{required: true, message: '请选择题目类型', trigger: 'change'}]">
              <el-radio-group v-model="form.type" @change="onTypeChange">
                <el-radio label="1">单选题</el-radio>
                <el-radio label="2">多选题</el-radio>
                <el-radio label="3">判断题</el-radio>
              </el-radio-group>
            </el-form-item>
            <el-form-item prop="options" v-if="form.type !== '3'" style="width: 100%;" label="题目选项" :rules="[{required: true, message: '请输入题目选项', trigger: 'change'}]">
              <div class="options" v-for="(item, index) in form.options" :key="index">
                <span>选项{{ index + 1 }}</span>
                <el-input placeholder="请输入选项名" size="small" :maxlength="100" show-word-limit v-model="item.label"></el-input>
                <i class="iconfont iconDelete" @click="removeOptions(index)"></i>
              </div>
              <el-button type="text" class="add-select" @click="addOptions">添加选项</el-button>
            </el-form-item>
            <el-form-item style="width: 100%;" v-if="form.options.length && form.type !== '3'" prop="answer" label="题目答案" :rules="[{required: true, message: '请选择题目答案', trigger: 'change'}]">
              <el-select :multiple="form.type === '2'" v-model="form.answer" size="small" placeholder="请选择题目答案">
                <el-option
                  v-for="(item, index) in form.options"
                  :key="index"
                  :label="item.label"
                  :value="item.label">
                </el-option>
              </el-select>
            </el-form-item>
            <el-form-item v-if="form.type === '3'" style="width: 100%;" prop="answer" label="题目答案" :rules="[{required: true, message: '请选择题目答案', trigger: 'change'}]">
              <el-radio-group v-model="form.answer">
                <el-radio label="1">正确</el-radio>
                <el-radio label="0">错误</el-radio>
              </el-radio-group>
            </el-form-item>
            <el-form-item label="答案解析" 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>
        </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 { mapState } from 'vuex'
  export default {
    name: 'Add',

    props: {
      instance: Function,
      dict: Object,
      params: Object,
      areaId: String
    },
    data () {
      return {
        info: {},
        form: {
          title: '',
          content: '',
          type: '1',
          answer: '',
          options: []
        },
        isLoading: false,
        id: ''
      }
    },

    computed: {
      ...mapState(['user'])
    },

    created () {
      if (this.params && this.params.id) {
        this.id = this.params.id
        this.getInfo(this.params.id)
      }
    },

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

      onTypeChange (e) {
        if (e === '2') {
          this.form.answer = []
        } else {
          this.form.answer = ''
        }
      },

      addOptions () {
        this.form.options.push({
          label: ''
        })
      },

      removeOptions (index) {
        this.form.options.splice(index, 1)
      },

      confirm () {
        this.$refs.form.validate((valid) => {
          if (valid) {
            this.isLoading = true
            this.instance.post(`/app/appcontentinfo/addOrUpdate`, {
              ...this.form
            }).then(res => {
              if (res.code == 0) {
                this.$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">
  .AppQuestionBank-add {
    .options {
      display: flex;
      align-items: center;

      .el-input {
        width: 420px;
        margin: 0 14px;
      }

      span {
        color: #666;
      }

      i:hover {
        cursor: pointer;
        opacity: 0.7;
      }
    }
  }
</style>
