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

    <el-form-item>
      <el-radio v-model="radioValue" :label="2"> 每年 </el-radio>
    </el-form-item>

    <el-form-item>
      <el-radio v-model="radioValue" :label="3">
        周期从
        <el-input-number v-model="cycle01" :min="fullYear" :max="2098" /> -
        <el-input-number
          v-model="cycle02"
          :min="cycle01 ? cycle01 + 1 : fullYear + 1"
          :max="2099"
        />
      </el-radio>
    </el-form-item>

    <el-form-item>
      <el-radio v-model="radioValue" :label="4">
        从
        <el-input-number v-model="average01" :min="fullYear" :max="2098" />
        年开始，每
        <el-input-number
          v-model="average02"
          :min="1"
          :max="2099 - average01 || fullYear"
        />
        年执行一次
      </el-radio>
    </el-form-item>

    <el-form-item>
      <el-radio v-model="radioValue" :label="5">
        指定
        <el-select
          v-model="checkboxList"
          clearable
          placeholder="可多选"
          multiple
        >
          <el-option
            v-for="item in 9"
            :key="item"
            :value="item - 1 + fullYear"
            :label="item - 1 + fullYear"
          />
        </el-select>
      </el-radio>
    </el-form-item>
  </el-form>
</template>

<script>
export default {
  name: 'CrontabYear',
  props: ['check', 'month', 'cron'],
  data() {
    return {
      fullYear: 0,
      radioValue: 1,
      cycle01: 0,
      cycle02: 0,
      average01: 0,
      average02: 1,
      checkboxList: [],
      checkNum: this.$options.propsData.check
    };
  },
  computed: {
    // 计算两个周期值
    cycleTotal: function () {
      const cycle01 = this.checkNum(this.cycle01, this.fullYear, 2098);
      const cycle02 = this.checkNum(
        this.cycle02,
        cycle01 ? cycle01 + 1 : this.fullYear + 1,
        2099
      );
      return cycle01 + '-' + cycle02;
    },
    // 计算平均用到的值
    averageTotal: function () {
      const average01 = this.checkNum(this.average01, this.fullYear, 2098);
      const average02 = this.checkNum(
        this.average02,
        1,
        2099 - average01 || this.fullYear
      );
      return average01 + '/' + average02;
    },
    // 计算勾选的checkbox值合集
    checkboxString: function () {
      const str = this.checkboxList.join();
      return str;
    }
  },
  watch: {
    radioValue: 'radioChange',
    cycleTotal: 'cycleChange',
    averageTotal: 'averageChange',
    checkboxString: 'checkboxChange'
  },
  mounted: function () {
    // 仅获取当前年份
    this.fullYear = Number(new Date().getFullYear());
    this.cycle01 = this.fullYear;
    this.average01 = this.fullYear;
  },
  methods: {
    // 单选按钮值变化时
    radioChange() {
      switch (this.radioValue) {
        case 1:
          this.$emit('update', 'year', '');
          break;
        case 2:
          this.$emit('update', 'year', '*');
          break;
        case 3:
          this.$emit('update', 'year', this.cycleTotal);
          break;
        case 4:
          this.$emit('update', 'year', this.averageTotal);
          break;
        case 5:
          this.$emit('update', 'year', this.checkboxString);
          break;
      }
    },
    // 周期两个值变化时
    cycleChange() {
      if (this.radioValue == '3') {
        this.$emit('update', 'year', this.cycleTotal);
      }
    },
    // 平均两个值变化时
    averageChange() {
      if (this.radioValue == '4') {
        this.$emit('update', 'year', this.averageTotal);
      }
    },
    // checkbox值变化时
    checkboxChange() {
      if (this.radioValue == '5') {
        this.$emit('update', 'year', this.checkboxString);
      }
    }
  }
};
</script>
