<template>
  <div class="form-config">
    <div class="config-group">
      <div class="config-item">
        <u-input class="form-maintitle" :maxlength="200" v-model="config.label"
                 :placeholder="`请输入${config.fixedLabel||''}标题 ${config.required ? '(必填）' : ''}`"
                 placeholder-style="color: #999999; font-weight: 600"/>
      </div>
      <div class="config-item__select--wrapper" v-if="['radio', 'select', 'checkbox'].includes(config.type)">
        <div class="config-item__select" v-for="(item, index) in config.options" :key="index">
          <image class="config-icon" :src="`${$cdn}askform/del.png`" @click="removeOptions(index)"/>
          <div class="config-item__upload" v-if="config.type !== 'select'" @click="upload(index)">
            <u-icon color="#8c9dc3" name="plus" v-if="!item.img.length"></u-icon>
            <image v-else :src="item.img[0].url"/>
          </div>
          <div class="textarea">
            <textarea type="textarea" placeholder-style="color: #CDCDCF" :auto-height="true" v-model="item.label"
                      :maxlength="100" placeholder="请输入选项"/>
          </div>
        </div>
        <div class="config-item__select config-item__select--add" @click="addOptions">
          <image class="config-icon" :src="`${$cdn}askform/zj.png`"/>
          <span>添加选项</span>
        </div>
      </div>
    </div>
    <div class="config-group">
      <div class="config-item" v-if="!['radio', 'upload', 'checkbox', 'select'].includes(config.type)">
        <div class="config-item__left">
          <span>说明文字</span>
        </div>
        <div class="config-item__right">
          <u-input v-model="config.placeholder" placeholder="请输入说明文字" input-align="right"/>
        </div>
      </div>
      <div class="config-item">
        <div class="config-item__left">
          <span>是否必填</span>
        </div>
        <div class="config-item__right">
          <u-switch v-model="config.required" active-value="1" inactive-value="0" :size="40"
                    active-color="#1088F9"></u-switch>
        </div>
      </div>
      <div class="config-item" v-if="!['upload'].includes(config.type)">
        <div class="config-item__left">
          <span>答案与分值</span>
        </div>
        <div class="config-item__right">
          <u-switch v-model="config.isShowPoints" :size="40" active-color="#1088F9"></u-switch>
        </div>
      </div>
      <div class="config-item" v-if="['input', 'textarea'].includes(config.type) && config.isShowPoints">
        <div class="config-item__left">
          <span>正确答案</span>
        </div>
        <div class="config-item__right">
          <u-input v-model="config.answer" placeholder="请输入正确答案" input-align="right"/>
        </div>
      </div>
      <div class="config-item"
           v-if="['radio', 'select'].includes(config.type) && config.isShowPoints && config.pointType === '0'">
        <div class="config-item__left">
          <span>正确答案</span>
        </div>
        <div class="config-item__right config-item__text" @click="isShowAnswer = true">
          <span>{{ config.answer ? config.answer : '请选择正确答案' }}</span>
          <u-icon name="arrow-down-fill" color="#c0c4cc" size="24"></u-icon>
        </div>
      </div>
      <div class="config-item config-item__checkbox"
           v-if="config.isShowPoints && ['radio', 'select', 'checkbox'].includes(config.type)">
        <div class="config-item__left">
          <span>计分方式</span>
        </div>
        <div class="config-item__right" @click="isShowType = true">
          <span>{{ pointTypeName ? pointTypeName : '请选择' }}</span>
          <u-icon name="arrow-right" color="#E1E2E3"/>
        </div>
      </div>
      <div class="config-item config-item__answer config-item__checkbox"
           v-if="['checkbox'].includes(config.type) && config.isShowPoints && config.pointType === '0'">
        <div class="config-item__left">
          <span>正确答案</span>
        </div>
        <div class="config-item__right">
          <u-checkbox-group wrap @change="onCheckboxChange">
            <u-checkbox v-model="field.checked" :name="field.label" v-if="field.label"
                        v-for="(field, i) in config.options" :key="i">
              <span>{{ field.label }}</span>
            </u-checkbox>
          </u-checkbox-group>
        </div>
      </div>
      <div class="config-item" v-if="config.isShowPoints && config.pointType === '0'">
        <div class="config-item__left">
          <span>本题分值</span>
        </div>
        <div class="config-item__right">
          <u-input v-model="config.points" type="number" placeholder="请输入本题分值" input-align="right"/>
        </div>
      </div>
      <div v-if="config.isShowPoints && config.pointType === '1'">
        <div class="config-item" v-for="(item, index) in config.options" :key="index">
          <div class="config-item__left">
            <span>{{ item.label }}</span>
          </div>
          <div class="config-item__right">
            <u-input v-model="item.point" placeholder="请输入分值" input-align="right"/>
          </div>
        </div>
      </div>
      <div class="config-item config-item__point" v-if="config.isShowPoints && config.pointType === '2'">
        <u-checkbox-group wrap @change="onCheckboxChange">
          <u-checkbox v-model="field.checked" :name="field.label" v-if="field.label"
                      v-for="(field, i) in config.options" :key="i">
            <span>{{ field.label }}</span>
            <u-input v-model="field.point" type="number" placeholder="请输入分值" input-align="right"/>
          </u-checkbox>
        </u-checkbox-group>
      </div>
      <div class="config-item" v-if="config.isShowPoints && config.pointType === '2'">
        <div class="config-item__left" style="padding-left: 20px">
          <span>全部答对</span>
        </div>
        <div class="config-item__right">
          <u-input v-model="config.points" type="number" placeholder="请输入全部答对分值" input-align="right"/>
        </div>
      </div>
    </div>
    <u-select :list="config.options" :default-value="defaultAnswer" value-name="value" label-name="label"
              v-model="isShowAnswer" @confirm="answerChange"></u-select>
    <u-select :list="config.pointDict" :default-value="defaultType" value-name="dictValue" label-name="dictName"
              v-model="isShowType" @confirm="pointTypeChange"></u-select>
    <div class="add-form__footer">
      <div @click="back">
        <span>取消</span>
      </div>
      <div @click="confirm">确定</div>
    </div>
  </div>
</template>

<script>
import {components} from './components/config'

export default {
  data() {
    let params = localStorage.getItem("toFiledConfig")
    params && (params = JSON.parse(params))
    params.config = params.index > -1 ? params.filed : components.filter(v => v.type === params.filedType)[0]
    return {
      ...params,
      isShowType: false,
      isShowAnswer: false
    }
  },
  computed: {
    pointTypeName() {
      if (!this.config.pointDict) return ''

      return this.config.pointDict.filter(v => v.dictValue === this.config.pointType)[0].dictName
    },
    defaultType() {
      if (!this.config.pointType) return [0]

      return [Number(this.config.pointType)]
    },
    defaultAnswer() {
      if (!this.config.answer) return [0]
      let index = 0
      if (this.config.answer) {
        this.config.options?.forEach((v, i) => {
          if (v.label === this.config.answer) {
            index = i
          }
        })
      }

      return [index]
    }
  },
  methods: {
    answerChange(e) {
      this.config.answer = e[0].label
    },

    pointTypeChange(e) {
      this.config.pointType = e[0].value
    },

    onCheckboxChange(e) {
      this.config.answer = e
    },

    upload(index) {
      let params = {
        count: 1,
        sizeType: ['compressed'],
        sourceType: ['album', 'camera'],
        success: (res) => {
          let count = this.fileList?.length + (res.tempFiles?.length || res.tempFile ? 1 : 0)
          if (count > 1) {
            return this.$u.toast(`不能超过1个`)
          }
          if (res.tempFiles) {
            res.tempFiles.map((item) => {
              this.uploadFile(item, index)
            })
          }
        }
      }
      uni.chooseImage(params)
    },

    uploadFile(img, index) {
      uni.showLoading({title: '上传中'})
      let formData = new FormData()
      formData.append('file', img)
      this.$http.post('/admin/file/add2', formData).then((res) => {
        uni.hideLoading()
        if (res?.data) {
          this.$u.toast('上传成功!')
          this.$set(this.config.options[index], 'img', [res.data])
        }
      }).catch(res => {
        this.$u.toast(res)
        uni.hideLoading()
      })
    },

    removeOptions(index) {
      const len = this.config.options.length
      const label = this.config.options[index].label
      if (len === 2) {
        return this.$u.toast('选项不能少于2个')
      }

      if (this.config.type === 'checkbox') {
        const answerIndex = this.config.answer.indexOf(label)
        if (answerIndex > -1) {
          this.config.answer.splice(answerIndex, 1)
        }
      } else {
        if (label === this.config.answer) {
          this.config.answer = ''
        }
      }

      this.config.options.splice(index, 1)
    },

    back() {  
      uni.navigateBack({})
    },

    confirm() {
      uni.$emit('filedConfig', {
        config: this.config,
        index: this.index === '' ? '-1' : this.index
      })
      this.back()
    },

    addOptions() {
      const len = this.config.options.length
      let label = `选项${len + 1}`

      const index = this.config.options.findIndex(v => label === v.label)
      if (index > -1) {
        label = `新选项${len + 1}`
      }

      this.config.options.push({
        label: label,
        value: '',
        point: '',
        img: '',
        checked: false
      })
    },
  }
}
</script>

<style lang="scss" scoped>
.form-config {
  box-sizing: border-box;
  padding-bottom: 130px;

  .form-maintitle {
    ::v-deep .uni-input-input {
      font-size: 36px;
      font-weight: 600;
    }
  }

  .config-item__select--wrapper {
    .config-item__select {
      display: flex;
      align-items: center;

      ::v-deep .u-input__input {
        height: 100%;
      }

      .textarea {
        flex: 1;
        display: flex;
        align-items: center;
        min-height: 104px;
        padding: 16px 0;
        font-size: 28px;
        border-bottom: 1px solid #dfe8f8;
      }

      textarea {
        width: 100%;
        font-size: 28px;
      }

      .config-icon {
        width: 36px;
        height: 36px;
        margin-right: 12px;
      }
    }

    .config-item__select--add {
      height: 120px;

      .config-icon {
        margin-right: 18px;
      }

      span {
        color: #1D74F4;
        font-size: 30px;
      }
    }
  }

  .config-group {
    margin-bottom: 32px;
    padding: 0 32px;
    background: #fff;

    .config-item__upload {
      display: flex;
      align-items: center;
      justify-content: center;
      width: 60px;
      height: 60px;
      margin-right: 20px;
      border: 1px solid rgb(208, 212, 220);
      background-color: #fbfdff;

      image {
        width: 100%;
        height: 100%;
      }
    }

    .config-item {
      display: flex;
      align-items: center;
      justify-content: space-between;
      min-height: 100px;
      padding: 16px 0;
      border-bottom: 1px solid #dfe8f8;

      &:last-child {
        border: none;
      }

      ::v-deep .u-radio__label, ::v-deep .u-checkbox__label {
        margin-right: 0;
        font-size: 28px;

        span {
          max-width: 400 rpx;
          line-height: 1.2;
        }
      }

      .config-item__left {
        max-width: 400px;
      }

      .config-item__right {
        flex: 1;
        text-align: right;
        padding-left: 30px;

        &.config-item__text {
          display: flex;
          align-items: center;
          justify-content: flex-end;

          span {
            max-width: 400px;
            margin-right: 10px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
            word-break: keep-all;
          }
        }

        .text {
        }
      }

      &.config-item__answer {
        display: block;
        padding: 20px 0;

        .config-item__left {
          margin-bottom: 32 rpx;

          span {
            word-break: break-all;
            color: #333;
            font-size: 30px;
          }
        }

        .config-item__right {
          width: 100%;
          padding-left: 0;
          text-align: left;
        }
      }
    }

    ::v-deep .u-checkbox {
      align-items: baseline;
    }

    .config-item__checkbox {
      height: auto;
      padding: 14px 0;

      ::v-deep .u-checkbox, ::v-deep .u-radio {
        // justify-content: flex-end;
      }
    }

    .config-item__point {
      height: auto;
      padding: 0;

      ::v-deep .u-checkbox {
        justify-content: inherit;
        min-height: 100px;
        padding: 14px 0;
        border-bottom: 1px solid #eee;

        &:last-child {
          border: none;
        }

        .u-checkbox__label {
          display: flex;
          align-items: center;
          justify-content: space-between;
          flex: 1;
          margin-right: 0;

          .u-input {
            flex: 1;
            max-width: 400px;
          }
        }
      }
    }
  }

  * {
    box-sizing: border-box;
  }

  .add-form__footer {
    display: flex;
    align-items: center;
    position: fixed;
    left: 0;
    bottom: 0;
    z-index: 1;
    width: 100%;
    height: 112px;
    text-align: center;

    div {
      display: flex;
      align-items: center;
      justify-content: center;
      flex: 1;
      height: 100%;
      text-align: center;
      background: #fff;

      &:first-child:active {
        background: #eee;
      }

      &:last-child {
        color: #fff;
        font-size: 36px;
        background: #3192F4;

        &:active {
          opacity: 0.8;
        }
      }

      span {
        flex: 1;
        height: 100%;
        line-height: 112px;
        color: #333333;
        font-size: 32px;

        &:active {
          background: #eee;
        }
      }
    }
  }
}
</style>
