<template>
  <div>
    <div class="workflow-button" :style="{top: styleTop, right: styleRight}" @click="showDrawer = true">
      <div class="icon">
        <svg width="24px" height="24px" viewBox="0 0 24 24" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
          <use xlink:href="#icon-a-24_BILLEXPAND_C_RBC_shenpiguiji"></use>
        </svg>
      </div>
      <div class="text">审批轨迹</div>
    </div>
    <Drawer
      :transfer="false"
      title="审批轨迹"
      :closable="true"
      v-model="showDrawer"
      :width="styleDrawerWidth"
      :inner="true"
      :mask="false"
    >
      <div v-if="!data || !data.steps">暂无数据</div>
      <div v-if="data && data.steps" class="workflow-step-wrapper">
        <div
          class="workflow-step"
          v-for="step, k in data.steps"
          :key="k"
        >
          <div class="step-head">
            <div class="step-icon">
              <svg :class="`step-icon ${isCurrentStep(step, k) ? 'waiting-icon' : 'finish-icon'}`" aria-hidden="true">
                <!-- 未到达 -->
                <use v-if="step.state == 1" xlink:href="#icon-a-24_BILLEXPAND_C_RBC_weidaoda"></use>
                <!-- 通过 -->
                <use v-else-if="step.result == 1" xlink:href="#icon-a-24_BILLEXPAND_C_RBC_shenpitongguo"></use>
                <!-- 提交 -->
                <use v-else-if="step.result == -1" xlink:href="#icon-a-24_BILLEXPAND_C_RBC_shenpitijiao"></use>
                <!-- 驳回 -->
                <use v-else-if="isRejectStep(step)" xlink:href="#icon-a-24_BILLEXPAND_C_RBC_shenpibohui"></use>
                <!-- 末端节点 -->
                <use v-else-if="step.result == -2" xlink:href="#icon-a-24_BILLEXPAND_C_RBC_moduanjiedian"></use>
              </svg>
            </div>
            <div :class="`step-line ${step.state === 2 ? 'finish-line' : 'waiting-line'}`" v-if="k != data.steps.length - 1"></div>
          </div>
          <div class="step-main">
            <div class="main-body">
              <div :class="`${isCurrentStep(step, k) ? 'text-black' : isRejectStep(step) ? 'text-error' : 'text-grey'}`">
                <div v-if="step.result == -2">
                  <span class="result">审批结束</span>
                </div>
                <div v-else-if="step.state == 2">
                  <span v-if="step.actualOwner" class="participants">{{step.actualOwner}}&nbsp;&nbsp;</span>
                  <span class="result">{{step.result == -1 ? '提交' : step.result == 1 ? '通过' : '驳回'}}</span>
                </div>
                <div v-else>
                  <span v-if="isCurrentStep(step, k)" class="participants">等待</span>
                  <span class="participants">{{step.participants.join('、')}}</span>
                  <span class="result">&nbsp;&nbsp;审批</span>
                </div>
              </div>
              <div v-if="isCurrentStep(step, k) || step.state == 2">{{formatStepTime(step)}}</div>
              <div v-if="step.comments">审批意见：{{step.comments}}</div>
              <div v-if="step.title" :class="isRejectStep(step) ? 'text-error' : 'text-main'">环节名称: {{step.title}}</div>
            </div>
          </div>
        </div>
      </div>
    </Drawer>
  </div>
</template>

<script>

export default {
  data() {
    return {
      showDrawer: false,
      data: {
        "procState": 2,
        "startTime": "2021-10-12T07:28:04Z",
        "finishTime": "2021-10-13T02:15:40Z",
        "steps": [],
        "submitter": "ylq"
      },
    }
  },
  props: {
    define: {
      type: Object,
      required: true,
    },
    context: {
      type: Object,
      default: () => { }
    }
  },
  methods:{
    isCurrentStep(step, k) {
      if (k != 0) return false
      return step.result != -2
    },
    isRejectStep(step) {
      return step.result === 3
    },
    formatDate(datetime) {
      const t = new Date(datetime)
      return t.format('yyyy-MM-dd HH:mm:ss')
    },
    /**
     * 根据节点状态返回完成时间或时间差
     * @param {object} step
     * @param {string} step.createTime - 创建时间
     * @param {string | null} step.completeTime - 结束时间
     * @param {number} step.result - 状态
     * @returns {string}
     */
    formatStepTime(step) {
      const currentTimestamp = Date.now()
      if (step.state === 1) {
        let ans = '已等待'
        const createTimestamp = (new Date(step.createTime)).getTime()
        let seconds = (currentTimestamp - createTimestamp) / 1000
        const formatList = [
          {
            rate: 60 * 60 * 24,
            label: '天',
          },
          {
            rate: 60 * 60,
            label: '小时',
          },
          {
            rate: 60,
            label: '分钟',
          },
        ]
        // for (const o of formatList) {
        //   const num = Math.floor(seconds / o.rate)
        //   if (num > 0 || o.alwaysShow) {
        //     ans += `${num}${o.label}`
        //     seconds -= num * o.rate
        //   }
        // }
        for (let i = 0; i < formatList.length; ++i) {
          const o = formatList[i]
          const num = Math.floor(seconds / o.rate)
          if (num > 0 || (!ans && i == formatList.length - 1)) {
            ans += `${num}${o.label}`
            seconds -= num * o.rate
          }
        }
        return ans
      }
      else {
        return this.formatDate(step.completeTime)
      }
    },
  },
  mounted() {
    window.GAMS.Util.invokeServer({
      path: 'gms/workflow/task/approved',
      type: 'GET',
      contentType: 'application/json',
      params: {
        bizName: this.context.bill.getBillDefine(),
        bizObjId: this.context.bill.getMasterData().getValue('id'),
      },
    }).then((res) => {
      res = res || []
      let count = 0
      this.data = res[0]
      for (let o of res) {
        if (o.procState == 1) {
          this.data = o
          ;++count
        }
      }
      if (count > 1) {
        this.$Message.error('工作流数据异常')
      }
      if (!this.data) return
      this.data.steps.push({
        title: "提交申请",
        state: 2,
        createTime: this.data.startTime,
        completeTime: this.data.startTime,
        comments: null,
        result: -1,
        actualOwner: this.data.submitter,
      })
      // 审批流程结束贴一个结束节点
      if (this.data.procState === 2) {
        this.data.steps.unshift({
          state: this.data.procState,
          createTime: this.data.finishTime,
          completeTime: this.data.finishTime,
          result: -2,
        })
      }
      // 否则从当前节点切断，
      else {
        for (let i = 0; i < this.data.steps.length - 1; ++i) {
          if (this.data.steps[i].state === 1 && this.data.steps[i + 1].state === 2) {
            this.data.steps = this.data.steps.slice(i)
            break
          }
        }
      }
    })
  },
  computed: {
    styleTop() {
      return this.define.layout.top || '0px'
    },
    styleRight() {
      return this.define.layout.right || '0px'
    },
    styleDrawerWidth() {
      return this.define.layout.drawerWidth || '400px'
    },
  },
  beforeDestroy() {
  },
}
</script>

<style lang="less" scoped>
@icon-width: 24px;
@main-color: #0DA2E6;
.workflow-button {
  cursor: pointer;
  position: absolute;
  z-index: 1000;
  width: 56px;
  height: 64px;
  padding-top: 10px;
  background: #FFA938;
  box-shadow: 0px 1px 6px 0px rgba(255, 169, 56, 0.8);
  border-radius: 6px;
  opacity: 0.9;
  .icon {
    width: 24px;
    height: 24px;
    margin-bottom: 8px;
    margin: 0 auto;
  }
  .text {
    margin-top: 2px;
    text-align: center;
    height: 17px;
    font-size: 12px;
    font-family: PingFangSC-Medium, PingFang SC;
    font-weight: 500;
    color: #FFFFFF;
    line-height: 17px;
    text-shadow: 0px 1px 6px rgba(255, 169, 56, 0.8);
  }
}
.workflow-step-wrapper {
  width: 100%;
  .workflow-step {
    width: 100%;
    position: relative;
    .step-head {
      width: @icon-width;
      position: absolute;
      height: 100%;
      .step-icon {
        width: 100%;
        fill: currentColor;
        height: @icon-width;
      }
      .waiting-icon {
        color: @main-color;
      }
      .finish-icon {
        color: #888;
      }
      .step-line {
        margin-left: @icon-width / 2;
        width: 1px;
        height: calc(100% - @icon-width);
      }
      .finish-line {
        background-color: #C8C8C8;
      }
      .waiting-line {
        background-color: @main-color;
      }
    }
    .step-main {
      width: 100%;
      min-height: calc(@icon-width + 10px);
      padding-left: @icon-width;
      font-size: 12px;
      color: #888888;
      line-height: 17px;
      font-family: PingFangSC-Regular, PingFang SC;
      font-weight: 400;
      .main-body {
        padding-bottom: 30px;
        padding-left: 5px;
        > div {
          margin-bottom: 5px;
        }
        .text-gray {
          color: #888888;
        }
        .text-black {
          color: #222222;
        }
        .text-main {
          color: @main-color;
        }
        .text-error {
          color: #ED664B;
        }
        .participants {
          height: 20px;
          font-size: 14px;
          line-height: 20px;
        }
        .result {
          height: 20px;
          font-size: 14px;
          line-height: 20px;
        }
      }
    }
  }
}
</style>