<template>
  <div>
    <div v-if="choiceVisible">
      <div class="content-area" :style="ui_style">
        <div class="button-panel" v-if="isUpdate">
          <el-button @click="onClose" plain icon="el-icon-delete" size="mini">返回</el-button>
          <el-button type="success" plain icon="el-icon-check" size="mini" @click="onSave">保存</el-button>
        </div>
        <el-form ref="form" :model="form" :rules="rules" label-width="80px">
          <el-form-item label="考试名称" prop="examName">
            <el-input v-model="form.examName" placeholder="请输入考试名称" />
          </el-form-item>
          <el-form-item label="考试说明" prop="examDescribe">
            <el-input v-model="form.examDescribe" placeholder="请输入考试说明" />
          </el-form-item>
          <el-row :gutter="20">
            <el-col :span="12" :xs="24">
              <el-form-item label="组卷方式" prop="buildType">
                <el-select v-model="form.buildType" placeholder="请选择组卷方式">
                  <el-option v-for="dict in buildTypeOptions" :key="dict.dictValue" :label="dict.dictLabel"
                    :value="dict.dictValue"></el-option>
                </el-select>
              </el-form-item>
            </el-col>
            <el-col :span="12" :xs="24">
              <el-form-item label="强制抽卷" prop="forceDone">
                <el-radio-group v-model="form.forceDone">
                  <el-radio v-for="dict in forceDoneOptions" :key="dict.dictValue"
                    :label="parseInt(dict.dictValue)">{{ dict.dictLabel }}</el-radio>
                </el-radio-group>
              </el-form-item>
            </el-col>
          </el-row>
          <el-row>
              <el-col :span="12" :xs="24">
              <el-form-item label="考试方式" prop="examType">
                <el-select v-model="form.examType" placeholder="请选择考试方式">
                  <el-option label="固定时间考试"
                    :value="1"></el-option>
                   <el-option label="固定时间段考试"
                    :value="2"></el-option>
                </el-select>
              </el-form-item>
            </el-col>
            <el-col :span="12" :xs="24">
              <el-form-item label="考试次数" prop="examTimes">
                <el-input-number :min="1" v-model="form.examTimes" placeholder="请输入考试次数"/>
              </el-form-item>
            </el-col>
          </el-row>
          <el-form-item label="选择题库" prop="examBank">
            <el-row>
              <el-col :span="20">
                <el-input type="textarea" :rows="2" readonly v-model="form.examBankText" />
              </el-col>
              <el-col :span="4">
                <div class="choice-button">
                  <el-button type="primary" icon="el-icon-folder-checked" size="mini" @click="doChoice()">选择</el-button>
                </div>
              </el-col>
            </el-row>
          </el-form-item>
          <el-form-item label="标题图片">
            <el-upload class="avatar-uploader" :action="url" :data="upLoadData" :show-file-list="false"
              :before-upload="beforeAvatarUpload">
              <img v-if="imageUrl" :src="imageUrl" class="avatar">
              <i v-else class="el-icon-plus avatar-uploader-icon"></i>
            </el-upload>
          </el-form-item>
          <el-row :gutter="20">
            <el-col :span="12" :xs="24">
              <el-form-item label="开始时间">
                <el-date-picker v-model="startDate" value-format="yyyy-MM-dd HH:mm:ss" type="datetime"
                  placeholder="选择考试开始日期时间">
                </el-date-picker>
              </el-form-item>
            </el-col>
            <el-col :span="12" :xs="24" v-if="form.examType==2">
               <el-form-item label="结束时间">
                <el-date-picker v-model="endDate" value-format="yyyy-MM-dd HH:mm:ss" type="datetime"
                  placeholder="选择考试结束日期时间">
                </el-date-picker>
              </el-form-item>
            </el-col>
          </el-row>
          <el-row>
             <el-col :span="12" :xs="24">
              <el-form-item label="考试时长" prop="examDuration">
                <el-time-select v-model="form.examDuration" :picker-options="{
                  start: '00:15',
                  step: '00:15',
                  end: '9:30'
                }" @change="onTimeChange" placeholder="选择时间">
                </el-time-select>
              </el-form-item>
            </el-col>
          </el-row>
          <el-form-item label="状态">
            <el-radio-group v-model="form.status">
              <el-radio v-for="dict in statusOptions" :key="dict.dictValue"
                :label="parseInt(dict.dictValue)">{{ dict.dictLabel }}</el-radio>
            </el-radio-group>
          </el-form-item>
        </el-form>
        <!-- 剪裁组件弹窗 -->
        <el-dialog title="裁切题库封面" :visible.sync="cropperModel" width="950px" center>
          <cropper-image :Name="cropperName" @uploadImgSuccess="handleUploadSuccess" ref="child">
          </cropper-image>
        </el-dialog>
      </div>
    </div>
    <div v-else>
      <exam-select ref="selectRef" @refreshSelect="selectDoneHandle"></exam-select>
    </div>
  </div>
</template>

<script>
import { baseApiUrl, uiUrl } from '@/config/sysinfo'
import examSelect from '@/components/ExamSelect/index'
import CropperImage from './CropperImage'
import { listQuestionsbankBycode } from "@/api/questions/questionsbank";
import { updateExamtask } from "@/api/exam/examtask";
import { dateToString, dateTextToDateString, dateRemoveSeconds, dateTextToDatetimeString } from "@/utils/dateUtils";

export default {
  components: {
    examSelect,
    CropperImage
  },
  data() {
    return {
      choiceVisible: true,
      // 状态字典
      statusOptions: [],
      ui_style: null,
      hosturl: '',
      // 表单参数
      form: {},
      // 表单校验
      rules: {
        examCode: [
          { required: true, message: "考试代码不能为空", trigger: "blur" }
        ],
        examName: [
          { required: true, message: "考试名称不能为空", trigger: "blur" }
        ],
        buildType: [
          { required: true, message: "组卷方式不能为空", trigger: "change" }
        ],
        examBank: [
          { required: true, message: "题库必须选择", trigger: "change" }
        ],
        examDuration: [
          { required: true, message: "考试时长不能为空", trigger: "change" }
        ]
      },
      buildTypeOptions: [
        { dictValue: 1, dictLabel: "人工组卷" },
        { dictValue: 2, dictLabel: "随机抽题" },
        { dictValue: 3, dictLabel: "考时随机组卷" }
      ],
      choiceList: null,
      forceDoneOptions: [
        { dictValue: 0, dictLabel: "强制抽卷" },
        { dictValue: 1, dictLabel: "不强制" }
      ],
      imageUrl: null,
      startDate: null,
      endDate:null,
      url: '',
      upLoadData: {
        guidCode: ''
      },
      cropperModel: false,
      cropperName: '',
      isUpdate: false
    }
  },
  watch: {
    // 监听开始时间和结束时间的变化
    startDate(newVal, oldVal) {
      if (this.form.examType == 2 && this.endDate) {
        this.validateTimeRange();
      }
    },
    endDate(newVal, oldVal) {
      if (this.form.examType == 2 && this.startDate) {
        this.validateTimeRange();
      }
    },
    'form.examType'(newVal, oldVal) {
      if (newVal == 2 && this.startDate && this.endDate) {
        this.validateTimeRange();
      }
    }
  },
  created() {
    const s_width = document.body.clientWidth
    if (s_width < 1000) {
      this.ui_style = 'margin-left: 2%; margin-right: 2%;'
    } else if (s_width >= 1000 && s_width < 1366) {
      this.ui_style = 'margin-left: 8%; margin-right: 8%;'
    } else if (s_width >= 1366 && s_width < 1566) {
      this.ui_style = 'margin-left: 12%; margin-right: 12%;'
    } else if (s_width >= 1566 && s_width < 1766) {
      this.ui_style = 'margin-left: 18%; margin-right: 18%;'
    } else {
      this.ui_style = 'margin-left: 24%; margin-right: 24%;'
    }
    this.hosturl = baseApiUrl
    this.getDicts("sys_normal_disable").then(response => {
      this.statusOptions = response.data;
    });
  },
  methods: {
    init_data(contentdata, choicelist) {
      this.isUpdate = false
      if (contentdata.examCode !== undefined && contentdata.examCode !== null) {
        contentdata.examType=contentdata.examType||1;
        contentdata.examTimes=contentdata.examTimes||1;
        this.form = contentdata
        if (this.form.pictureUrl !== undefined && this.form.pictureUrl !== null) {
          this.imageUrl = this.hosturl + this.form.pictureUrl
        }
      }

      if (choicelist !== undefined && choicelist !== null) {
        this.choiceList = choicelist
      }
    },
    update_data(row) {
      this.isUpdate = true
      row.forceDone = Number(row.forceDone)
      row.buildType = Number(row.buildType)

      this.form = row
      if (this.form.pictureUrl !== undefined && this.form.pictureUrl !== null) {
        this.imageUrl = this.hosturl + this.form.pictureUrl
      }
      this.startDate = row.startTime
      listQuestionsbankBycode(row.examBank).then(response => {
        this.choiceList = response.data
      });
    },
    doChoice() {
      this.choiceVisible = false
      this.$store.commit("SET_SHOWTITLE", false)
      this.$nextTick(() => {
        this.$refs.selectRef.init_data(this.choiceList)
      })
    },
    selectDoneHandle(saveList) {
      this.$store.commit("SET_SHOWTITLE", true)
      this.choiceList = saveList
      this.choiceVisible = true

      let nametext = ''
      let codetext = ''
      if (this.choiceList !== null && this.choiceList.length > 0) {
        for (let i = 0; i < this.choiceList.length; i++) {
          if (i < this.choiceList.length - 1) {
            nametext += this.choiceList[i].bankName + ','
            codetext += this.choiceList[i].bankCode + ','
          } else {
            nametext += this.choiceList[i].bankName
            codetext += this.choiceList[i].bankCode
          }
        }
      }
      this.form.examBankText = nametext
      this.form.examBank = codetext
    },
    onTimeChange() {
      if (this.startDate === undefined || this.startDate === null) {
        this.form.examDuration = undefined
        this.$message.error('请先输入考试开始时间')
        return
      }
      this.set_time()
    },
    set_time() {
      let timeitem = this.form.examDuration.split(":")
      const addhour = Number(timeitem[0]) * 60 * 60 * 1000
      const addminute = Number(timeitem[1]) * 60 * 1000
      const datestr = dateRemoveSeconds(new Date(this.startDate))
      this.form.startTime = Number(new Date(datestr).getTime())
      if(this.form.examType==1){
        this.form.endTime = this.form.startTime + addhour + addminute
      }else{
        const dateEnd=dateRemoveSeconds(new Date(this.endDate))
        this.form.endTime = Number(new Date(dateEnd).getTime())
      }
    },
    getData() {
      if (this.onCheck()) {
        const saveData = {
          choiceList: this.choiceList,
          examData: this.form
        }
        return saveData
      } else {
        return null
      }
    },
    saveData() {
      if (this.onCheck()) {
        // 在设置时间之前再次验证时间范围
        if (this.form.examType == 2) {
          if (!this.validateTimeRange()) {
            return false;
          }
        }
        
        this.set_time()
        updateExamtask(this.form).then(response => {
          this.msgSuccess("修改成功");
          return true
        });
      } else {
        return false
      }
    },
    onClose() {
      this.$emit('refreshContent')
    },
    onSaveOrBack() {
      if (this.saveData()) {
        this.$emit('refreshContent')
      }
    },
    onSave() {
      this.saveData()
    },
    onCheck() {
      if (this.form.examName === undefined || this.form.examName === null) {
        this.$message.error('需要输入考试名称')
        return false
      }

      if (this.form.buildType === undefined || this.form.buildType === null) {
        this.$message.error('需要先选择组卷方式')
        return false
      }

      if (this.form.examBankText === undefined || this.form.examBankText === null) {
        this.$message.error('需要先选择题库')
        return false
      }

      if (this.form.pictureUrl === undefined || this.form.pictureUrl === null) {
        this.$message.error('需要先加入标题图片')
        return false
      }

      if (this.startDate === undefined || this.startDate === null) {
        this.$message.error('需要输入考试开始时间')
        return false
      }

      // 添加时间验证：开始时间不能晚于结束时间，结束时间不能早于开始时间
      if (this.form.examType == 2) {
        if (this.endDate === undefined || this.endDate === null) {
          this.$message.error('需要输入考试结束时间')
          return false
        }
        
        const startDateTime = new Date(this.startDate).getTime();
        const endDateTime = new Date(this.endDate).getTime();
        
        if (startDateTime >= endDateTime) {
          this.$message.error('开始时间不能晚于或等于结束时间')
          return false
        }
      }

      if (this.form.examDuration === undefined || this.form.examDuration === null) {
        this.$message.error('需要输入考试时长')
        return false
      }

      if (this.form.startTime === undefined || this.form.startTime === null) {
        this.set_time()
      }

      return true
    },
    beforeAvatarUpload(file) {
      this.cropperModel = true
      this.cropperName = name
      this.$nextTick(() => {
        this.$refs.child.selectImg(this.form.examCode, file)
      })
    },
    // 图片上传成功后
    handleUploadSuccess(data) {
      this.imageUrl = this.hosturl + data.photoUrl
      this.form.pictureUrl = data.photoUrl
      this.cropperModel = false
    },
    // 验证时间范围
    validateTimeRange() {
      if (this.startDate && this.endDate) {
        const startDateTime = new Date(this.startDate).getTime();
        const endDateTime = new Date(this.endDate).getTime();
        
        if (startDateTime >= endDateTime) {
          this.$message.error('开始时间不能晚于或等于结束时间');
          return false;
        }
      }
      return true;
    }
  }
};
</script>

<style scoped lang="scss">
.content-area {
  margin-top: 1.6rem;
  background-color: #f7f7f7;
}

.button-panel {
  padding-bottom: 1.6rem;
  background-color: #fff;
}

.form-area {
  padding-top: 1.6rem;
  background-color: #fff;
}

.choice-button {
  text-align: center;
}

.avatar-uploader .el-upload {
  border: 1px dashed #d9d9d9;
  border-radius: 6px;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.avatar-uploader .el-upload:hover {
  border-color: #409eff;
}

.avatar-uploader-icon {
  font-size: 28px;
  color: #8c939d;
  width: 128px;
  height: 128px;
  line-height: 128px;
  text-align: center;
  background-color: #fff;
}

.avatar {
  width: 128px;
  height: 128px;
  display: block;
}
</style>
