<template>
  <div>
    <el-tabs type="border-card">
      <el-tab-pane label="秒" v-if="shouldHide('second')">
        <CrontabSecond
          @update="updateCrontabValue"
          :check="checkNumber"
          :cron="crontabValueObj"
          ref="cronsecond"
        />
      </el-tab-pane>

      <el-tab-pane label="分钟" v-if="shouldHide('min')">
        <CrontabMin
          @update="updateCrontabValue"
          :check="checkNumber"
          :cron="crontabValueObj"
          ref="cronmin"
        />
      </el-tab-pane>

      <el-tab-pane label="小时" v-if="shouldHide('hour')">
        <CrontabHour
          @update="updateCrontabValue"
          :check="checkNumber"
          :cron="crontabValueObj"
          ref="cronhour"
        />
      </el-tab-pane>

      <el-tab-pane label="日" v-if="shouldHide('day')">
        <CrontabDay
          @update="updateCrontabValue"
          :check="checkNumber"
          :cron="crontabValueObj"
          ref="cronday"
        />
      </el-tab-pane>

      <el-tab-pane label="月" v-if="shouldHide('month')">
        <CrontabMonth
          @update="updateCrontabValue"
          :check="checkNumber"
          :cron="crontabValueObj"
          ref="cronmonth"
        />
      </el-tab-pane>

      <el-tab-pane label="周" v-if="shouldHide('week')">
        <CrontabWeek
          @update="updateCrontabValue"
          :check="checkNumber"
          :cron="crontabValueObj"
          ref="cronweek"
        />
      </el-tab-pane>

      <el-tab-pane label="年" v-if="shouldHide('year')">
        <CrontabYear
          @update="updateCrontabValue"
          :check="checkNumber"
          :cron="crontabValueObj"
          ref="cronyear"
        />
      </el-tab-pane>
    </el-tabs>

    <div class="popup-main">
      <div class="popup-result">
        <p class="title">时间表达式</p>
        <table>
          <thead>
            <th v-for="item of tabTitles" width="40" :key="item">{{item}}</th>
            <th>Cron 表达式</th>
          </thead>
          <tbody>
            <td>
              <span>{{crontabValueObj.second}}</span>
            </td>
            <td>
              <span>{{crontabValueObj.min}}</span>
            </td>
            <td>
              <span>{{crontabValueObj.hour}}</span>
            </td>
            <td>
              <span>{{crontabValueObj.day}}</span>
            </td>
            <td>
              <span>{{crontabValueObj.month}}</span>
            </td>
            <td>
              <span>{{crontabValueObj.week}}</span>
            </td>
            <td>
              <span>{{crontabValueObj.year}}</span>
            </td>
            <td>
              <span>{{crontabValueString}}</span>
            </td>
          </tbody>
        </table>
      </div>
      <CrontabResult :ex="crontabValueString"></CrontabResult>

      <div class="pop_btn">
        <el-button size="small" type="primary" @click="submitFill">确定</el-button>
        <el-button size="small" type="warning" @click="clearCron">重置</el-button>
        <el-button size="small" @click="hidePopup">取消</el-button>
      </div>
    </div>
  </div>
</template>

<script setup lang="ts" name="Crontab">
import { ref, reactive, computed, watch, onMounted } from 'vue';
import CrontabSecond from "./second.vue";
import CrontabMin from "./min.vue";
import CrontabHour from "./hour.vue";
import CrontabDay from "./day.vue";
import CrontabMonth from "./month.vue";
import CrontabWeek from "./week.vue";
import CrontabYear from "./year.vue";
import CrontabResult from "./result.vue";

const props = defineProps({
  expression: {
    type: String,
    default: ''
  },
  hideComponent: {
    type: Array as () => string[],
    default: () => []
  }
});

const emit = defineEmits(['hide', 'fill']);

const tabTitles = ref(["秒", "分钟", "小时", "日", "月", "周", "年"]);
const tabActive = ref(0);
const myindex = ref(0);

const crontabValueObj = reactive({
  second: "*",
  min: "*",
  hour: "*",
  day: "*",
  month: "*",
  week: "?",
  year: "",
});

const cronsecond = ref(null);
const cronmin = ref(null);
const cronhour = ref(null);
const cronday = ref(null);
const cronmonth = ref(null);
const cronweek = ref(null);
const cronyear = ref(null);

// 判断某个组件是否应该显示
const shouldHide = (key: string) => {
  if (props.hideComponent && props.hideComponent.includes(key)) {
    return false;
  }
  return true;
};

// 解析表达式
const resolveExp = () => {
  // 反解析表达式
  if (props.expression) {
    const arr = props.expression.split(" ");
    if (arr.length >= 6) {
      // 6位以上是合法表达式
      const obj = {
        second: arr[0],
        min: arr[1],
        hour: arr[2],
        day: arr[3],
        month: arr[4],
        week: arr[5],
        year: arr[6] ? arr[6] : "",
      };
      
      Object.assign(crontabValueObj, obj);
      
      for (let i in obj) {
        if (obj[i]) {
          changeRadio(i, obj[i]);
        }
      }
    }
  } else {
    // 没有传入的表达式则还原
    clearCron();
  }
};

// tab切换值
const tabCheck = (index: number) => {
  tabActive.value = index;
};

// 由子组件触发，更改表达式组成的字段值
const updateCrontabValue = (name: string, value: string, from?: string) => {
  console.log("updateCrontabValue", name, value, from);
  crontabValueObj[name] = value;
  if (from && from !== name) {
    console.log(`来自组件 ${from} 改变了 ${name} ${value}`);
    changeRadio(name, value);
  }
};

// 获取对应的ref组件
const getRefComponent = (refName: string) => {
  switch(refName) {
    case 'cronsecond': return cronsecond.value;
    case 'cronmin': return cronmin.value;
    case 'cronhour': return cronhour.value;
    case 'cronday': return cronday.value;
    case 'cronmonth': return cronmonth.value;
    case 'cronweek': return cronweek.value;
    case 'cronyear': return cronyear.value;
    default: return null;
  }
};

// 赋值到组件
const changeRadio = (name: string, value: string) => {
  const arr = ["second", "min", "hour", "month"];
  const refName = "cron" + name;
  let insValue;

  const refComponent = getRefComponent(refName);
  if (!refComponent) return;

  if (arr.includes(name)) {
    if (value === "*") {
      insValue = 1;
    } else if (value.indexOf("-") > -1) {
      const indexArr = value.split("-");
      if (refComponent.cycle01 !== undefined) {
        refComponent.cycle01 = isNaN(parseInt(indexArr[0])) ? 0 : parseInt(indexArr[0]);
      }
      if (refComponent.cycle02 !== undefined) {
        refComponent.cycle02 = parseInt(indexArr[1]);
      }
      insValue = 2;
    } else if (value.indexOf("/") > -1) {
      const indexArr = value.split("/");
      if (refComponent.average01 !== undefined) {
        refComponent.average01 = isNaN(parseInt(indexArr[0])) ? 0 : parseInt(indexArr[0]);
      }
      if (refComponent.average02 !== undefined) {
        refComponent.average02 = parseInt(indexArr[1]);
      }
      insValue = 3;
    } else {
      insValue = 4;
      if (refComponent.checkboxList !== undefined) {
        refComponent.checkboxList = value.split(",");
      }
    }
  } else if (name == "day") {
    if (value === "*") {
      insValue = 1;
    } else if (value == "?") {
      insValue = 2;
    } else if (value.indexOf("-") > -1) {
      const indexArr = value.split("-");
      if (refComponent.cycle01 !== undefined) {
        refComponent.cycle01 = isNaN(parseInt(indexArr[0])) ? 0 : parseInt(indexArr[0]);
      }
      if (refComponent.cycle02 !== undefined) {
        refComponent.cycle02 = parseInt(indexArr[1]);
      }
      insValue = 3;
    } else if (value.indexOf("/") > -1) {
      const indexArr = value.split("/");
      if (refComponent.average01 !== undefined) {
        refComponent.average01 = isNaN(parseInt(indexArr[0])) ? 0 : parseInt(indexArr[0]);
      }
      if (refComponent.average02 !== undefined) {
        refComponent.average02 = parseInt(indexArr[1]);
      }
      insValue = 4;
    } else if (value.indexOf("W") > -1) {
      const indexArr = value.split("W");
      if (refComponent.workday !== undefined) {
        refComponent.workday = isNaN(parseInt(indexArr[0])) ? 0 : parseInt(indexArr[0]);
      }
      insValue = 5;
    } else if (value === "L") {
      insValue = 6;
    } else {
      if (refComponent.checkboxList !== undefined) {
        refComponent.checkboxList = value.split(",");
      }
      insValue = 7;
    }
  } else if (name == "week") {
    if (value === "*") {
      insValue = 1;
    } else if (value == "?") {
      insValue = 2;
    } else if (value.indexOf("-") > -1) {
      const indexArr = value.split("-");
      if (refComponent.cycle01 !== undefined) {
        refComponent.cycle01 = isNaN(parseInt(indexArr[0])) ? 0 : parseInt(indexArr[0]);
      }
      if (refComponent.cycle02 !== undefined) {
        refComponent.cycle02 = parseInt(indexArr[1]);
      }
      insValue = 3;
    } else if (value.indexOf("#") > -1) {
      const indexArr = value.split("#");
      if (refComponent.average01 !== undefined) {
        refComponent.average01 = isNaN(parseInt(indexArr[1])) ? 1 : parseInt(indexArr[1]);
      }
      if (refComponent.average02 !== undefined) {
        refComponent.average02 = parseInt(indexArr[0]);
      }
      insValue = 4;
    } else if (value.indexOf("L") > -1) {
      const indexArr = value.split("L");
      if (refComponent.weekday !== undefined) {
        refComponent.weekday = isNaN(parseInt(indexArr[0])) ? 1 : parseInt(indexArr[0]);
      }
      insValue = 5;
    } else {
      if (refComponent.checkboxList !== undefined) {
        refComponent.checkboxList = value.split(",");
      }
      insValue = 6;
    }
  } else if (name == "year") {
    if (value == "") {
      insValue = 1;
    } else if (value == "*") {
      insValue = 2;
    } else if (value.indexOf("-") > -1) {
      insValue = 3;
    } else if (value.indexOf("/") > -1) {
      insValue = 4;
    } else {
      if (refComponent.checkboxList !== undefined) {
        refComponent.checkboxList = value.split(",");
      }
      insValue = 5;
    }
  }
  
  if (refComponent.radioValue !== undefined) {
    refComponent.radioValue = insValue;
  }
};

// 表单选项的子组件校验数字格式
const checkNumber = (value: number, minLimit: number, maxLimit: number): number => {
  // 检查必须为整数
  value = Math.floor(value);
  if (value < minLimit) {
    value = minLimit;
  } else if (value > maxLimit) {
    value = maxLimit;
  }
  return value;
};

// 隐藏弹窗
const hidePopup = () => {
  emit("hide");
};

// 填充表达式
const submitFill = () => {
  emit("fill", crontabValueString.value);
  hidePopup();
};

// 清空表达式
const clearCron = () => {
  // 还原选择项
  console.log("准备还原");
  Object.assign(crontabValueObj, {
    second: "*",
    min: "*",
    hour: "*",
    day: "*",
    month: "*",
    week: "?",
    year: "",
  });
  
  for (let j in crontabValueObj) {
    changeRadio(j, crontabValueObj[j]);
  }
};

// 计算cron表达式字符串
const crontabValueString = computed(() => {
  const obj = crontabValueObj;
  const str =
    obj.second +
    " " +
    obj.min +
    " " +
    obj.hour +
    " " +
    obj.day +
    " " +
    obj.month +
    " " +
    obj.week +
    (obj.year == "" ? "" : " " + obj.year);
  return str;
});

// 监听props变化
watch(() => props.expression, resolveExp);
watch(() => props.hideComponent, (value) => {
  // 隐藏部分组件
});

// 组件挂载后初始化
onMounted(() => {
  resolveExp();
});
</script>
<style scoped>
.pop_btn {
  text-align: center;
  margin-top: 20px;
}
.popup-main {
  position: relative;
  margin: 10px auto;
  background: #fff;
  border-radius: 5px;
  font-size: 12px;
  overflow: hidden;
}
.popup-title {
  overflow: hidden;
  line-height: 34px;
  padding-top: 6px;
  background: #f2f2f2;
}
.popup-result {
  box-sizing: border-box;
  line-height: 24px;
  margin: 25px auto;
  padding: 15px 10px 10px;
  border: 1px solid #ccc;
  position: relative;
}
.popup-result .title {
  position: absolute;
  top: -28px;
  left: 50%;
  width: 140px;
  font-size: 14px;
  margin-left: -70px;
  text-align: center;
  line-height: 30px;
  background: #fff;
}
.popup-result table {
  text-align: center;
  width: 100%;
  margin: 0 auto;
}
.popup-result table span {
  display: block;
  width: 100%;
  font-family: arial;
  line-height: 30px;
  height: 30px;
  white-space: nowrap;
  overflow: hidden;
  border: 1px solid #e8e8e8;
}
.popup-result-scroll {
  font-size: 12px;
  line-height: 24px;
  height: 10em;
  overflow-y: auto;
}
</style>
