<template>
  <el-form size="small">
    <el-form-item>
      <el-radio v-model="radioValue" :label="1">
        月，允许的通配符[, - * /]
      </el-radio>
    </el-form-item>

    <el-form-item>
      <el-radio v-model="radioValue" :label="2">
        周期从
        <el-input-number v-model="cycle01" :min="1" :max="11" /> -
        <el-input-number
          v-model="cycle02"
          :min="cycle01 ? cycle01 + 1 : 2"
          :max="12"
        />
        月
      </el-radio>
    </el-form-item>

    <el-form-item>
      <el-radio v-model="radioValue" :label="3">
        从
        <el-input-number v-model="average01" :min="1" :max="11" /> 月开始，每
        <el-input-number
          v-model="average02"
          :min="1"
          :max="12 - average01 || 0"
        />
        月月执行一次
      </el-radio>
    </el-form-item>

    <el-form-item>
      <el-radio v-model="radioValue" :label="4">
        指定
        <el-select
          v-model="checkboxList"
          clearable
          placeholder="可多选"
          multiple
          style="width: 100%"
        >
          <el-option v-for="item in 12" :key="item" :value="item">{{
            item
          }}</el-option>
        </el-select>
      </el-radio>
    </el-form-item>
  </el-form>
</template>

<script>
export default {
  name: 'CrontabMonth',
  props: ['check', 'cron'],
  data() {
    return {
      radioValue: 1,
      cycle01: 1,
      cycle02: 2,
      average01: 1,
      average02: 1,
      checkboxList: [],
      checkNum: this.check
    };
  },
  computed: {
    // 计算两个周期值
    cycleTotal: function () {
      const cycle01 = this.checkNum(this.cycle01, 1, 11);
      const cycle02 = this.checkNum(
        this.cycle02,
        cycle01 ? cycle01 + 1 : 2,
        12
      );
      return cycle01 + '-' + cycle02;
    },
    // 计算平均用到的值
    averageTotal: function () {
      const average01 = this.checkNum(this.average01, 1, 11);
      const average02 = this.checkNum(this.average02, 1, 12 - average01 || 0);
      return average01 + '/' + average02;
    },
    // 计算勾选的checkbox值合集
    checkboxString: function () {
      const str = this.checkboxList.join();
      return str == '' ? '*' : str;
    }
  },
  watch: {
    radioValue: 'radioChange',
    cycleTotal: 'cycleChange',
    averageTotal: 'averageChange',
    checkboxString: 'checkboxChange'
  },
  methods: {
    // 单选按钮值变化时
    radioChange() {
      switch (this.radioValue) {
        case 1:
          this.$emit('update', 'month', '*');
          break;
        case 2:
          this.$emit('update', 'month', this.cycleTotal);
          break;
        case 3:
          this.$emit('update', 'month', this.averageTotal);
          break;
        case 4:
          this.$emit('update', 'month', this.checkboxString);
          break;
      }
    },
    // 周期两个值变化时
    cycleChange() {
      if (this.radioValue == '2') {
        this.$emit('update', 'month', this.cycleTotal);
      }
    },
    // 平均两个值变化时
    averageChange() {
      if (this.radioValue == '3') {
        this.$emit('update', 'month', this.averageTotal);
      }
    },
    // checkbox值变化时
    checkboxChange() {
      if (this.radioValue == '4') {
        this.$emit('update', 'month', this.checkboxString);
      }
    }
  }
};
</script>
