<template>
  <div
    class="chat-embed layout-bg chat-background"
    v-loading="loading"
    :style="{
      '--el-color-primary': applicationDetail?.custom_theme?.theme_color,
      '--el-color-primary-light-9': hexToRgba(
        applicationDetail?.custom_theme?.theme_color || '#3370FF',
        0.1,
      ),
      '--el-color-primary-light-6': hexToRgba(
        applicationDetail?.custom_theme?.theme_color || '#3370FF',
        0.4,
      ),
      '--el-color-primary-light-06': hexToRgba(
        applicationDetail?.custom_theme?.theme_color || '#3370FF',
        0.04,
      ),
      backgroundImage: `url(${applicationDetail?.chat_background})`,
    }"
  >
    <div class="chat-embed__header" :style="customStyle">
      <div class="flex-between">
        <div class="flex align-center">
          <AppIcon
            iconName="app-mobile-open-history"
            style="font-size: 20px"
            class="ml-16 cursor"
            :style="{
              color: applicationDetail?.custom_theme?.header_font_color,
            }"
            @click.prevent.stop="show = true"
          />
          <div class="mr-12 ml-16 flex">
            <el-avatar
              v-if="isAppIcon(applicationDetail?.icon)"
              shape="square"
              :size="32"
              style="background: none"
            >
              <img :src="applicationDetail?.icon" alt="" />
            </el-avatar>
            <LogoIcon v-else height="32px" />
          </div>

          <h4 class="ellipsis" style="max-width: 270px" :title="applicationDetail?.name">
            {{ applicationDetail?.name }}
          </h4>
        </div>
        <el-button
          text
          @click="newChat"
          style="margin-right: 85px"
          :style="{ color: applicationDetail?.custom_theme?.header_font_color }"
        >
          <AppIcon iconName="app-create-chat" style="font-size: 20px"></AppIcon>
        </el-button>
      </div>
    </div>
    <div>
      <div class="chat-embed__main">
        <AiChat
          ref="AiChatRef"
          v-model:applicationDetails="applicationDetail"
          :available="applicationAvailable"
          :appId="applicationDetail?.id"
          :record="currentRecordList"
          :chatId="currentChatId"
          type="ai-chat"
          @refresh="refresh"
          @scroll="handleScroll"
          class="AiChat-embed"
        >
        </AiChat>
      </div>

      <ChatHistoryDrawer
        v-model:show="show"
        :application-detail="applicationDetail"
        :chat-log-data="chatLogData"
        :left-loading="left_loading"
        :currentChatId="currentChatId"
        @new-chat="newChat"
        @clickLog="clickListHandle"
        @delete-log="deleteLog"
        @refreshFieldTitle="refreshFieldTitle"
      />
    </div>
  </div>
</template>
<script setup lang="ts">
import { ref, onMounted, reactive, nextTick, computed } from 'vue'
import { isAppIcon } from '@/utils/common'
import { hexToRgba } from '@/utils/theme'
import { t } from '@/locales'
import ChatHistoryDrawer from './component/ChatHistoryDrawer.vue'
import chatAPI from '@/api/chat/chat'

const AiChatRef = ref()
const loading = ref(false)
const left_loading = ref(false)
const chatLogData = ref<any[]>([])
const show = ref(false)
const props = defineProps<{
  application_profile: any
  applicationAvailable: boolean
}>()
const applicationDetail = computed({
  get: () => {
    return props.application_profile
  },
  set: (v) => {},
})
const paginationConfig = reactive({
  current_page: 1,
  page_size: 20,
  total: 0,
})

const currentRecordList = ref<any>([])
const currentChatId = ref('new') // 当前历史记录Id 默认为'new'

const customStyle = computed(() => {
  return {
    background: applicationDetail.value?.custom_theme?.theme_color,
    color: applicationDetail.value?.custom_theme?.header_font_color,
  }
})

function deleteLog(row: any) {
  chatAPI.deleteChat(row.id, left_loading).then(() => {
    if (currentChatId.value === row.id) {
      currentChatId.value = 'new'
      paginationConfig.current_page = 1
      paginationConfig.total = 0
      currentRecordList.value = []
    }
    getChatLog(applicationDetail.value.id)
  })
}

function handleScroll(event: any) {
  if (
    currentChatId.value !== 'new' &&
    event.scrollTop === 0 &&
    paginationConfig.total > currentRecordList.value.length
  ) {
    const history_height = event.dialogScrollbar.offsetHeight
    paginationConfig.current_page += 1
    getChatRecord().then(() => {
      event.scrollDiv.setScrollTop(event.dialogScrollbar.offsetHeight - history_height)
    })
  }
}

const newObj = {
  id: 'new',
  abstract: t('chat.createChat'),
}

function newChat() {
  paginationConfig.current_page = 1
  currentRecordList.value = []
  if (!chatLogData.value.some((v) => v.id === 'new')) {
    chatLogData.value.unshift(newObj)
  }
  currentChatId.value = 'new'
  show.value = false
}

function getChatLog(id: string) {
  const page = {
    current_page: 1,
    page_size: 20,
  }

  chatAPI.pageChat(page.current_page, page.page_size, left_loading).then((res: any) => {
    chatLogData.value = res.data.records
    paginationConfig.current_page = 1
    paginationConfig.total = 0
    currentRecordList.value = []
    currentChatId.value = chatLogData.value?.[0]?.id || 'new'
    if (currentChatId.value !== 'new') {
      getChatRecord()
    }
  })
}

function getChatRecord() {
  return chatAPI
    .pageChatRecord(
      currentChatId.value,
      paginationConfig.current_page,
      paginationConfig.page_size,
      loading,
    )
    .then((res: any) => {
      paginationConfig.total = res.data.total
      const list = res.data.records
      list.map((v: any) => {
        v['write_ed'] = true
        v['record_id'] = v.id
      })
      currentRecordList.value = [...list, ...currentRecordList.value].sort((a, b) =>
        a.create_time.localeCompare(b.create_time),
      )
      if (paginationConfig.current_page === 1) {
        nextTick(() => {
          // 将滚动条滚动到最下面
          AiChatRef.value.setScrollBottom()
        })
      }
    })
}

const clickListHandle = (item: any) => {
  if (item.id !== currentChatId.value) {
    paginationConfig.current_page = 1
    currentRecordList.value = []
    currentChatId.value = item.id
    if (currentChatId.value !== 'new') {
      getChatRecord()
    }
    show.value = false
  }
}

function refreshFieldTitle(chatId: string, abstract: string) {
  const find = chatLogData.value.find((item: any) => item.id == chatId)
  if (find) {
    find.abstract = abstract
  }
}

function refresh(id: string) {
  getChatLog(applicationDetail.value.id)
  currentChatId.value = id
}
/**
 *初始化历史对话记录
 */
const init = () => {
  getChatLog(applicationDetail.value.id)
}

onMounted(() => {
  init()
})
</script>
<style lang="scss">
.chat-embed {
  overflow: hidden;
  &__header {
    background: var(--app-header-bg-color);
    position: fixed;
    width: 100%;
    left: 0;
    top: 0;
    z-index: 100;
    height: var(--app-header-height);
    line-height: var(--app-header-height);
    box-sizing: border-box;
    border-bottom: 1px solid var(--el-border-color);
  }
  &__main {
    padding-top: calc(var(--app-header-height) + 16px);
    height: calc(100vh - var(--app-header-height) - 16px);
    overflow: hidden;
  }

  &.chat-embed--popup {
    .chat-popover-button {
      right: 85px;
    }
  }
  .chat-popover-mask {
    background-color: var(--el-overlay-color-lighter);
    bottom: 0;
    height: 100%;
    left: 0;
    overflow: auto;
    position: fixed;
    right: 0;
    top: var(--app-header-height);
    z-index: 2008;
  }

  .AiChat-embed {
    .ai-chat__operate {
      padding-top: 12px;
    }
  }
}
</style>
<style lang="scss" scoped>
:deep(.el-overlay) {
  background-color: transparent;
}
</style>
