<template>
  <div class="chart-content-chat heightFull d-flex flex-column">
    <div class="chart-content-chat-box overflow-y-auto position-relative element" ref="chatBox" v-loading="loading">
      <div class="pa-3">
        <div
          v-for="(item, index) in items"
          :key="index"
          :class="['d-flex', 'mb-3', item.type === 1 ? 'flex-row' : 'flex-row-reverse' ]"
        >
          <v-avatar color="indigo" size="36">
            <span class="white--text">{{ item.type === 1 ? 'AI' : 'T' }}</span>
          </v-avatar>
          <div :class="[item.type === 1 ? 'ml-3 flex-grow-1 flex-shrink-1' : 'mr-3 box-length-70']">
            <div
              :class="['d-flex align-center', `justify-${item.type === 1 ? 'start' : 'end'}`]"
            >
              {{ item.type === 1 ? 'AI助手' : '游客' }}
              <template v-if="item.type === 1">
                <v-btn
                  v-if="item.content?.sql"
                  class="ml-3"
                  small
                  elevation="0"
                  depressed
                  @click="item.showSnackbar = !item.showSnackbar"
                >
                  {{ !item.showSnackbar ? '查看SQL' : '收起SQL'}}
                </v-btn>
              </template>
            </div>
            <div class="mt-2" :class="{ 'indigo lighten-5 pa-3 rounded': item.type === 2 }">
              <template v-if="typeof item.content === 'string'">
                <div>
                  <span v-if="item.welcome" class="mdi mdi-hand-wave"></span>
                  {{item.content}}
                </div>
                <div v-if="item.welcome">
                  <div class="mt-1" v-for="_item in item.items" :key="_item">
                    <span class="defaultLink" @click="onSend(_item)">{{_item}}</span>
                  </div>
                </div>
              </template>
              <template v-else-if="Object.keys(item.content).length === 0">
                <span>
                  正在思考中
                  <v-progress-circular
                    indeterminate
                    size="14"
                    class="ml-1"
                    width="2"
                    color="primary"
                  ></v-progress-circular>
                </span>
              </template>
              <template v-else>
                <div>
                  {{ item.content.summary }}
                </div>
                <div v-if="item.showSnackbar" class="pa-3 blue-grey lighten-3 mt-3">
                  {{ item.content.sql }}
                </div>
                <div class="mt-3" v-if="item.content.columns.length">
                  <div>
                    <v-menu
                      v-model="item.showMenu"
                      :close-on-content-click="false"
                      :close-on-click="false"
                      max-width="300"
                      attach=".chart-content-chat-box"
                    >
                      <template v-slot:activator>
                        <v-btn
                          @click="item.showMenu = true"
                          text
                          color="primary"
                        >我要画图</v-btn>
                      </template>
                      <div class="white">
                        <v-banner>画图配置</v-banner>
                        <div class="pa-3">
                          <v-autocomplete
                            v-model="item.model.typeAxis"
                            :items="item.content.columns"
                            class="mb-3"
                            outlined
                            dense
                            hide-details
                            label="类型轴"
                          ></v-autocomplete>

                          <v-autocomplete
                            v-model="item.model.dataAxis"
                            :items="item.content.columns"
                            class="mb-3"
                            outlined
                            dense
                            hide-details
                            label="数据轴"
                            multiple
                            chips
                            small-chips
                          ></v-autocomplete>
                          <div class="text-right">
                            <v-btn small class="mr-3" @click="item.showMenu = false">关闭</v-btn>
                            <v-btn small color="primary" @click="onRender(item)">图表预览</v-btn>
                          </div>
                        </div>
                      </div>
                    </v-menu>
                  </div>
                  <v-card flat outlined height="324">
                    <div class="pa-3">
                      <v-simple-table
                        fixed-header
                        dense
                        height="300px"
                      >
                        <template v-slot:default>
                          <thead>
                            <tr>
                              <th
                                v-for="header in item.content.columns"
                                :key="header"
                                class="text-left"
                              >{{ header }}</th>
                            </tr>
                          </thead>
                          <tbody>
                            <tr
                              v-for="(row, index) in item.content.rows"
                              :key="index"
                            >
                              <td
                                v-for="header in item.content.columns"
                                :key="header"
                                class="text-left"
                              >{{ row[header] }}</td>
                            </tr>
                          </tbody>
                        </template>
                      </v-simple-table>
                    </div>
                  </v-card>
                </div>
                <div class="d-flex align-center" v-if="!item.dataValidation">
                  您认为结果是否正确
                  <v-btn
                    class="ma-2"
                    text
                    icon
                    small
                    color="blue lighten-2"
                    @click="onAddTrain(item, true)"
                  >
                    <v-icon>mdi-thumb-up</v-icon>
                  </v-btn>

                  <v-btn
                    class="ma-2"
                    text
                    icon
                    small
                    color="red lighten-2"
                    @click="onAddTrain(item, false)"
                  >
                    <v-icon>mdi-thumb-down</v-icon>
                  </v-btn>
                </div>
              </template>
            </div>
          </div>
        </div>
      </div>
    </div>
    <div class="pa-3 chart-content-chat-btn">
      <div class="send d-flex align-center justify-center">
        <div class="send-box">
          <v-textarea
            v-model="question"
            class="send-box-area"
            auto-grow
            placeholder="请输入您想问的内容，按 Ctrl+Enter 换行"
            outlined
            hide-details
            no-resize
            rows="1"
            @keydown.enter="handleKeyCode($event)"
          >
          </v-textarea>
          <v-btn icon color="primary" class="btn" :disabled="!question || disabled" @click="handleSendMsg">
            <v-icon>mdi-send</v-icon>
          </v-btn>
        </div>
      </div>
    </div>
  </div>
</template>

<script>
import {
  getAsk,
  submitTrainingCorrect,
  submitTrainingError
} from '@/api/dataChart'
export default {
  name: 'dataChartEditChat',
  data () {
    return {
      loading: false,
      disabled: false,
      question: '',
      items: [
        {
          type: 1,
          welcome: true,
          content: '你好，我是您的数据查询小助手，支持查询“高速公路服务区”的相关信息。您可以这样提问: ',
          items: [
            '现在一共有多少个服务区？分别归属于哪些管理公司？',
            '哪个服务区的档口数量最多？',
            '赣州分公司下，餐饮类档口的日均订单量是多少？'
          ]
        }
      ]
      // trueData: false
    }
  },
  methods: {
    handleKeyCode (event) {
      if (event.keyCode === 13) {
        if (!event.ctrlKey) {
          event.preventDefault()
          this.handleSendMsg()
        } else {
          this.question += '\n'
        }
      }
    },
    onSend (str) {
      if (this.disabled) {
        return
      }
      this.question = str
      this.handleSendMsg()
    },
    async handleSendMsg () {
      if (!this.question || this.disabled) {
        return
      }
      this.disabled = true

      const question = this.question
      this.items.push({
        type: 2,
        user: '游客',
        content: question
      })
      this.scrollToBottom()
      const ask = {
        type: 1,
        content: {},
        showSnackbar: false,
        dataValidation: false,
        question, // 记录当前问题
        showMenu: false,
        model: {
          dataAxis: null,
          typeAxis: null
        }
      }
      this.items.push(ask)
      this.question = ''
      try {
        const { data } = await getAsk({ question })
        ask.content = data
        this.scrollToBottom()
      } catch (error) {
        ask.content = error.message
      } finally {
        this.disabled = false
      }
    },
    scrollToBottom () {
      this.$nextTick(() => {
        const box = this.$refs.chatBox
        if (!box) {
          return
        }
        box.scrollTop = box.scrollHeight
      })
    },
    async onAddTrain (item, bool) {
      this.loading = true
      const subApi = bool ? submitTrainingCorrect : submitTrainingError
      try {
        await subApi({
          question: item.question,
          sql: item.content.sql
        })
        item.dataValidation = true
        // this.$snackbar.success('操作成功')
      } catch (error) {
        this.$snackbar.error(error)
      } finally {
        this.loading = false
      }
    },
    onRender ({ model, content }) {
      if (!model.dataAxis || !model.typeAxis) {
        this.$snackbar.error('请选择数据轴和类型轴')
        return
      }
      const { typeAxis, dataAxis } = model
      const data = {
        type: typeAxis ? content.rows.map(e => e[typeAxis]) : [],
        data: dataAxis ? dataAxis.map(e => content.rows.map(r => r[e])) : []
      }
      this.$emit('render', data)
    }
  }
}
</script>

<style lang="scss" scoped>
.heightFull {
  height: 100%;
}
.widthFull {
  width: 100%;
}
.chart-content {
  &-chat {
    // border: 1px solid #ccc;
    &-box {
      height: 0;
      flex: 1;
      max-width: 800px;
      width: 100%;
      margin: 0 auto;
    }
    &-btn {
      .send {
        margin: 0 auto;
        max-width: 800px;
      }
    }
  }

}
.box-length-70 {
  max-width: 70%;
}
.send {
  // height: 130px;
  // margin: 20px 0;
  padding: 20px;
  &-box {
    width: 100%;
    // max-width: 800px;
    position: relative;
    .btn {
      position: absolute;
      right: 20px;
      bottom: 12px;
    }
    &-area {
      position: relative;
      bottom: 0;
      ::v-deep textarea {
        padding: 15px 70px 15px 0 !important;
        max-height: 300px;
        min-height: 60px;
        overflow: auto;
        margin: 0 !important;
      }
    }
  }
}

.position {
  &-relative {
    position: relative;
  }
}

.element {
  overflow: auto;
  scrollbar-width: none; /* Firefox */
  -ms-overflow-style: none; /* IE/Edge */
}

.element::-webkit-scrollbar {
  display: none; /* Chrome/Safari/Opera */
}
</style>
