feat：【ai 大模型】对话列表，增加 attachment-urls 发送逻辑

src/views/ai/chat/index/components/message/MessageFileUpload.vue

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+<template>
+  <div
+    class="message-file-upload"
+    @mouseenter="showTooltip = true"
+    @mouseleave="showTooltip = false"
+  >
+    <!-- 文件上传按钮 -->
+    <el-button
+      v-if="!disabled"
+      circle
+      size="small"
+      class="upload-btn"
+      :class="{ 'has-files': fileList.length > 0 }"
+      @click="triggerFileInput"
+      :disabled="fileList.length >= limit"
+    >
+      <Icon icon="ep:paperclip" :size="16" />
+      <!-- 文件数量徽章 -->
+      <span v-if="fileList.length > 0" class="file-badge">{{ fileList.length }}</span>
+    </el-button>
+
+    <!-- 隐藏的文件输入框 -->
+    <input
+      ref="fileInputRef"
+      type="file"
+      multiple
+      style="display: none"
+      :accept="acceptTypes"
+      @change="handleFileSelect"
+    />
+
+    <!-- Hover 显示的文件列表 -->
+    <div
+      v-if="fileList.length > 0 && showTooltip"
+      class="file-tooltip"
+      @mouseenter="showTooltip = true"
+      @mouseleave="showTooltip = false"
+    >
+      <div class="tooltip-arrow"></div>
+      <div class="file-list">
+        <div
+          v-for="(file, index) in fileList"
+          :key="index"
+          class="file-item"
+          :class="{ uploading: file.uploading }"
+        >
+          <div class="file-info">
+            <Icon :icon="getFileIcon(file.name)" class="file-icon" />
+            <span class="file-name">{{ file.name }}</span>
+            <span class="file-size">({{ formatFileSize(file.size) }})</span>
+          </div>
+          <div class="file-actions">
+            <el-progress
+              v-if="file.uploading"
+              :percentage="file.progress || 0"
+              :show-text="false"
+              size="small"
+              class="progress-bar"
+            />
+            <el-button
+              v-else-if="!disabled"
+              link
+              type="danger"
+              size="small"
+              @click="removeFile(index)"
+            >
+              <Icon icon="ep:close" :size="12" />
+            </el-button>
+          </div>
+        </div>
+      </div>
+    </div>
+  </div>
+</template>
+
+<script setup lang="ts">
+import { useUpload } from '@/components/UploadFile/src/useUpload'
+import { formatFileSize, getFileIcon } from '@/utils/file'
+
+export interface FileItem {
+  name: string
+  size: number
+  url?: string
+  uploading?: boolean
+  progress?: number
+  raw?: File
+}
+
+defineOptions({ name: 'MessageFileUpload' })
+
+const props = defineProps({
+  modelValue: {
+    type: Array as PropType<string[]>,
+    default: () => []
+  },
+  limit: {
+    type: Number,
+    default: 5
+  },
+  maxSize: {
+    type: Number,
+    default: 10 // MB
+  },
+  acceptTypes: {
+    type: String,
+    default: '.jpg,.jpeg,.png,.gif,.webp,.pdf,.doc,.docx,.txt,.xls,.xlsx,.ppt,.pptx,.csv,.md'
+  },
+  disabled: {
+    type: Boolean,
+    default: false
+  }
+})
+
+const emit = defineEmits(['update:modelValue', 'upload-success', 'upload-error'])
+
+const fileInputRef = ref<HTMLInputElement>()
+const fileList = ref<FileItem[]>([]) // 内部管理文件列表
+const uploadedUrls = ref<string[]>([]) // 已上传的 URL 列表
+const showTooltip = ref(false) // 控制 tooltip 显示
+const message = useMessage()
+const { httpRequest } = useUpload()
+
+/** 监听 v-model 变化 */
+watch(
+  () => props.modelValue,
+  (newVal) => {
+    uploadedUrls.value = [...newVal]
+    // 如果外部清空了 URLs，也清空内部文件列表
+    if (newVal.length === 0) {
+      fileList.value = []
+    }
+  },
+  { immediate: true, deep: true }
+)
+
+/** 触发文件选择 */
+const triggerFileInput = () => {
+  fileInputRef.value?.click()
+}
+
+/** 处理文件选择 */
+const handleFileSelect = (event: Event) => {
+  const target = event.target as HTMLInputElement
+  const files = Array.from(target.files || [])
+  if (files.length === 0) {
+    return
+  }
+  // 检查总文件数是否超过限制
+  if (files.length + fileList.value.length > props.limit) {
+    message.error(`最多只能上传 ${props.limit} 个文件`)
+    target.value = '' // 清空输入
+    return
+  }
+  // 处理每个文件
+  files.forEach((file) => {
+    if (file.size > props.maxSize * 1024 * 1024) {
+      message.error(`文件 ${file.name} 大小超过 ${props.maxSize}MB`)
+      return
+    }
+    const fileItem: FileItem = {
+      name: file.name,
+      size: file.size,
+      uploading: true,
+      progress: 0,
+      raw: file
+    }
+    fileList.value.push(fileItem)
+    // 立即开始上传
+    uploadFile(fileItem)
+  })
+
+  // 清空 input 值，允许重复选择相同文件
+  target.value = ''
+}
+
+/** 上传文件 */
+const uploadFile = async (fileItem: FileItem) => {
+  try {
+    // 模拟上传进度
+    const progressInterval = setInterval(() => {
+      if (fileItem.progress! < 90) {
+        fileItem.progress = (fileItem.progress || 0) + Math.random() * 10
+      }
+    }, 100)
+
+    // 调用上传接口
+    // const formData = new FormData()
+    // formData.append('file', fileItem.raw!)
+    const response = await httpRequest({
+      file: fileItem.raw!,
+      filename: fileItem.name
+    } as any)
+    fileItem.uploading = false
+    fileItem.progress = 100
+    fileItem.url = (response as any).data
+    // 添加到 URL 列表
+    uploadedUrls.value.push(fileItem.url!)
+
+    clearInterval(progressInterval)
+
+    emit('upload-success', fileItem)
+    updateModelValue()
+  } catch (error) {
+    fileItem.uploading = false
+    message.error(`文件 ${fileItem.name} 上传失败`)
+    emit('upload-error', error)
+
+    // 移除上传失败的文件
+    const index = fileList.value.indexOf(fileItem)
+    if (index > -1) {
+      removeFile(index)
+    }
+  }
+}
+
+/** 删除文件 */
+const removeFile = (index: number) => {
+  // 从 URL 列表中移除
+  const removedFile = fileList.value[index]
+  fileList.value.splice(index, 1)
+  if (removedFile.url) {
+    const urlIndex = uploadedUrls.value.indexOf(removedFile.url)
+    if (urlIndex > -1) {
+      uploadedUrls.value.splice(urlIndex, 1)
+    }
+  }
+
+  updateModelValue()
+}
+
+/** 更新 v-model */
+const updateModelValue = () => {
+  emit('update:modelValue', [...uploadedUrls.value])
+}
+
+// 暴露方法
+defineExpose({
+  triggerFileInput,
+  clearFiles: () => {
+    fileList.value = []
+    uploadedUrls.value = []
+    updateModelValue()
+  }
+})
+</script>
+
+<style scoped>
+.message-file-upload {
+  position: relative;
+  display: inline-block;
+}
+
+.upload-btn {
+  --el-button-bg-color: transparent;
+  --el-button-border-color: transparent;
+  --el-button-hover-bg-color: var(--el-fill-color-light);
+  --el-button-hover-border-color: transparent;
+  color: var(--el-text-color-regular);
+  position: relative;
+  transition: all 0.2s ease;
+}
+
+.upload-btn.has-files {
+  color: var(--el-color-primary);
+  --el-button-hover-bg-color: var(--el-color-primary-light-9);
+}
+
+.file-badge {
+  position: absolute;
+  top: -4px;
+  right: -4px;
+  background: var(--el-color-danger);
+  color: white;
+  font-size: 10px;
+  padding: 1px 4px;
+  border-radius: 8px;
+  min-width: 16px;
+  height: 16px;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  line-height: 1;
+  font-weight: 500;
+}
+
+.file-tooltip {
+  position: absolute;
+  bottom: calc(100% + 8px);
+  left: 50%;
+  transform: translateX(-50%);
+  background: white;
+  border: 1px solid var(--el-border-color-light);
+  border-radius: 8px;
+  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
+  z-index: 1000;
+  min-width: 240px;
+  max-width: 320px;
+  padding: 8px;
+  animation: fadeInDown 0.2s ease;
+}
+
+.tooltip-arrow {
+  position: absolute;
+  bottom: -5px;
+  left: 50%;
+  transform: translateX(-50%);
+  width: 0;
+  height: 0;
+  border-left: 5px solid transparent;
+  border-right: 5px solid transparent;
+  border-top: 5px solid var(--el-border-color-light);
+}
+
+.tooltip-arrow::after {
+  content: '';
+  position: absolute;
+  bottom: 1px;
+  left: -4px;
+  width: 0;
+  height: 0;
+  border-left: 4px solid transparent;
+  border-right: 4px solid transparent;
+  border-top: 4px solid white;
+}
+
+@keyframes fadeInDown {
+  from {
+    opacity: 0;
+    transform: translateX(-50%) translateY(4px);
+  }
+  to {
+    opacity: 1;
+    transform: translateX(-50%) translateY(0);
+  }
+}
+
+.file-list {
+  max-height: 200px;
+  overflow-y: auto;
+}
+
+.file-item {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  padding: 8px;
+  margin-bottom: 4px;
+  background: var(--el-fill-color-extra-light);
+  border-radius: 6px;
+  font-size: 12px;
+  transition: all 0.2s;
+}
+
+.file-item:last-child {
+  margin-bottom: 0;
+}
+
+.file-item:hover {
+  background: var(--el-fill-color-light);
+}
+
+.file-item.uploading {
+  opacity: 0.7;
+}
+
+.file-info {
+  display: flex;
+  align-items: center;
+  flex: 1;
+  min-width: 0;
+}
+
+.file-icon {
+  color: var(--el-color-primary);
+  margin-right: 8px;
+  flex-shrink: 0;
+}
+
+.file-name {
+  font-weight: 500;
+  color: var(--el-text-color-primary);
+  margin-right: 4px;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+  flex: 1;
+}
+
+.file-size {
+  color: var(--el-text-color-secondary);
+  flex-shrink: 0;
+  font-size: 11px;
+}
+
+.file-actions {
+  display: flex;
+  align-items: center;
+  gap: 4px;
+  flex-shrink: 0;
+  margin-left: 8px;
+}
+
+.progress-bar {
+  width: 60px;
+}
+
+/* 滚动条样式 */
+.file-list::-webkit-scrollbar {
+  width: 4px;
+}
+
+.file-list::-webkit-scrollbar-track {
+  background: transparent;
+}
+
+.file-list::-webkit-scrollbar-thumb {
+  background: var(--el-border-color-light);
+  border-radius: 2px;
+}
+
+.file-list::-webkit-scrollbar-thumb:hover {
+  background: var(--el-border-color);
+}
+</style>