<template>
  <el-container>
    <el-aside width="40%">
      <div class="select-item">
        <div v-for="(news, index) in newsList" :key="index">
          <div
            class="news-main father"
            v-if="index === 0"
            :class="{ activeAddNews: activeNewsIndex === index }"
            @click="activeNewsIndex = index"
          >
            <div class="news-content">
              <img class="material-img" :src="news.thumbUrl" />
              <div class="news-content-title">{{ news.title }}</div>
            </div>
            <div class="child" v-if="newsList.length > 1">
              <el-button type="info" circle size="small" @click="() => moveDownNews(index)">
                <Icon icon="ep:arrow-down-bold" />
              </el-button>
              <el-button
                v-if="isCreating"
                type="danger"
                circle
                size="small"
                @click="() => removeNews(index)"
              >
                <Icon icon="ep:delete" />
              </el-button>
            </div>
          </div>
          <div
            class="news-main-item father"
            v-if="index > 0"
            :class="{ activeAddNews: activeNewsIndex === index }"
            @click="activeNewsIndex = index"
          >
            <div class="news-content-item">
              <div class="news-content-item-title">{{ news.title }}</div>
              <div class="news-content-item-img">
                <img class="material-img" :src="news.thumbUrl" width="100%" />
              </div>
            </div>
            <div class="child">
              <el-button
                v-if="newsList.length > index + 1"
                circle
                type="info"
                size="small"
                @click="() => moveDownNews(index)"
              >
                <Icon icon="ep:arrow-down-bold" />
              </el-button>
              <el-button
                v-if="index > 0"
                type="info"
                circle
                size="small"
                @click="() => moveUpNews(index)"
              >
                <Icon icon="ep:arrow-up-bold" />
              </el-button>
              <el-button
                v-if="isCreating"
                type="danger"
                size="small"
                circle
                @click="() => removeNews(index)"
              >
                <Icon icon="ep:delete" />
              </el-button>
            </div>
          </div>
        </div>
        <el-row justify="center" class="ope-row">
          <el-button
            type="primary"
            circle
            @click="plusNews"
            v-if="newsList.length < 8 && isCreating"
          >
            <Icon icon="ep:plus" />
          </el-button>
        </el-row>
      </div>
    </el-aside>
    <el-main>
      <div v-if="newsList.length > 0">
        <!-- 标题、作者、原文地址 -->
        <el-row :gutter="20">
          <el-input v-model="activeNewsItem.title" placeholder="请输入标题（必填）" />
          <el-input
            v-model="activeNewsItem.author"
            placeholder="请输入作者"
            style="margin-top: 5px"
          />
          <el-input
            v-model="activeNewsItem.contentSourceUrl"
            placeholder="请输入原文地址"
            style="margin-top: 5px"
          />
        </el-row>
        <!-- 封面和摘要 -->
        <el-row :gutter="20">
          <el-col :span="12">
            <CoverSelect v-model="activeNewsItem" :is-first="activeNewsIndex === 0" />
          </el-col>
          <el-col :span="12">
            <p>摘要:</p>
            <el-input
              :rows="8"
              type="textarea"
              v-model="activeNewsItem.digest"
              placeholder="请输入摘要"
              class="digest"
              maxlength="120"
            />
          </el-col>
        </el-row>
        <!--富文本编辑器组件-->
        <el-row>
          <Editor v-model="activeNewsItem.content" :editor-config="editorConfig" />
        </el-row>
      </div>
    </el-main>
  </el-container>
</template>

<script setup lang="ts" name="NewsForm">
import { Editor } from '@/components/Editor'
import { createEditorConfig } from '../editor-config'
import CoverSelect from './CoverSelect.vue'
import { type NewsItem, createEmptyNewsItem } from './types'

const message = useMessage()

const props = defineProps<{
  isCreating: boolean
  modelValue: NewsItem[] | null
}>()

const accountId = inject<number>('accountId')

// ========== 文件上传 ==========
const UPLOAD_URL = import.meta.env.VITE_BASE_URL + '/admin-api/mp/material/upload-permanent' // 上传永久素材的地址
const editorConfig = createEditorConfig(UPLOAD_URL, accountId)

// v-model=newsList
const emit = defineEmits<{
  (e: 'update:modelValue', v: NewsItem[])
}>()
const newsList = computed<NewsItem[]>({
  get() {
    return props.modelValue === null ? [createEmptyNewsItem()] : props.modelValue
  },
  set(val) {
    emit('update:modelValue', val)
  }
})

const activeNewsIndex = ref(0)
const activeNewsItem = computed<NewsItem>(() => newsList.value[activeNewsIndex.value])

// 将图文向下移动
const moveDownNews = (index: number) => {
  const temp = newsList.value[index]
  newsList.value[index] = newsList.value[index + 1]
  newsList.value[index + 1] = temp
  activeNewsIndex.value = index + 1
}

// 将图文向上移动
const moveUpNews = (index: number) => {
  const temp = newsList.value[index]
  newsList.value[index] = newsList.value[index - 1]
  newsList.value[index - 1] = temp
  activeNewsIndex.value = index - 1
}

// 删除指定 index 的图文
const removeNews = async (index: number) => {
  try {
    await message.confirm('确定删除该图文吗?')
    newsList.value.splice(index, 1)
    if (activeNewsIndex.value === index) {
      activeNewsIndex.value = 0
    }
  } catch {}
}

// 添加一个图文
const plusNews = () => {
  newsList.value.push(createEmptyNewsItem())
  activeNewsIndex.value = newsList.value.length - 1
}
</script>

<style lang="scss" scoped>
.ope-row {
  padding-top: 5px;
  margin-top: 5px;
  text-align: center;
  border-top: 1px solid #eaeaea;
}

.el-row {
  margin-bottom: 20px;
}

.el-row:last-child {
  margin-bottom: 0;
}

.digest {
  display: inline-block;
  width: 100%;
  vertical-align: top;
}

/* 新增图文 */
.news-main {
  width: 100%;
  height: 120px;
  margin: auto;
  background-color: #fff;
}

.news-content {
  position: relative;
  width: 100%;
  height: 120px;
  background-color: #acadae;
}

.news-content-title {
  position: absolute;
  bottom: 0;
  left: 0;
  display: inline-block;
  width: 98%;
  height: 25px;
  padding: 1%;
  overflow: hidden;
  font-size: 15px;
  color: #fff;
  text-overflow: ellipsis;
  white-space: nowrap;
  background-color: black;
  opacity: 0.65;
}

.news-main-item {
  width: 100%;
  padding: 5px 0;
  margin: auto;
  background-color: #fff;
  border-top: 1px solid #eaeaea;
}

.news-content-item {
  position: relative;
  margin-left: -3px;
}

.news-content-item-title {
  display: inline-block;
  width: 70%;
  font-size: 12px;
}

.news-content-item-img {
  display: inline-block;
  width: 25%;
  background-color: #acadae;
}

.select-item {
  width: 60%;
  padding: 10px;
  margin: 0 auto 10px;
  border: 1px solid #eaeaea;

  .activeAddNews {
    border: 5px solid #2bb673;
  }
}

.father .child {
  position: relative;
  bottom: 25px;
  display: none;
  text-align: center;
}

.father:hover .child {
  display: block;
}

.material-img {
  width: 100%;
  height: 100%;
}
</style>
