feat(bpm): 支持审批任务附件上传与展示

- 审批通过、审批拒绝弹窗新增附件/图片上传
- 审批提交时携带 attachments 字段
- 审批完成或关闭弹窗后清理附件表单状态
- 审批流时间线支持展示审批附件
- 图片附件支持预览，非图片附件支持链接打开
- 统一附件上传目录、文件类型白名单和 5MB 大小限制
- ApprovalTaskInfo 增加 attachments 字段

src/api/bpm/processInstance/index.ts

@@ -36,6 +36,7 @@ export type ApprovalTaskInfo = {
   assigneeUser: User
   status: number
   reason: string
+  attachments?: string[]
   signPicUrl: string
 }
 

src/views/bpm/processInstance/detail/ProcessInstanceOperationButton.vue

@@ -44,6 +44,16 @@
               :rows="4"
             />
           </el-form-item>
+          <el-form-item label="上传附件/图片" prop="attachments">
+            <UploadFile
+              v-model="approveReasonForm.attachments"
+              :limit="10"
+              :file-type="APPROVAL_ATTACHMENT_FILE_TYPES"
+              :file-size="APPROVAL_ATTACHMENT_FILE_SIZE"
+              directory="bpm/task-attachment"
+              :is-show-tip="false"
+            />
+          </el-form-item>
           <el-form-item
             label="下一个节点的审批人"
             prop="nextAssignees"
@@ -118,6 +128,16 @@
               :rows="4"
             />
           </el-form-item>
+          <el-form-item label="上传附件/图片" prop="attachments">
+            <UploadFile
+              v-model="rejectReasonForm.attachments"
+              :limit="10"
+              :file-type="APPROVAL_ATTACHMENT_FILE_TYPES"
+              :file-size="APPROVAL_ATTACHMENT_FILE_SIZE"
+              directory="bpm/task-attachment"
+              :is-show-tip="false"
+            />
+          </el-form-item>
           <el-form-item>
             <el-button
               :disabled="formLoading"
@@ -530,6 +550,7 @@ import { until, useDebounceFn } from '@vueuse/core'
 import SignDialog from './SignDialog.vue'
 import ProcessInstanceTimeline from '../detail/ProcessInstanceTimeline.vue'
 import { isEmpty } from '@/utils/is'
+import { UploadFile } from '@/components/UploadFile'
 
 defineOptions({ name: 'ProcessInstanceBtnContainer' })
 
@@ -561,6 +582,23 @@ const popOverVisible = ref({
   deleteSign: false
 }) // 气泡卡是否展示
 const returnList = ref([] as any) // 退回节点
+const APPROVAL_ATTACHMENT_FILE_TYPES = [
+  'doc',
+  'docx',
+  'xls',
+  'xlsx',
+  'ppt',
+  'pptx',
+  'txt',
+  'pdf',
+  'jpg',
+  'jpeg',
+  'png',
+  'gif',
+  'bmp',
+  'webp'
+]
+const APPROVAL_ATTACHMENT_FILE_SIZE = 5
 
 // ========== 审批信息 ==========
 const runningTask = ref<any>() // 运行中的任务
@@ -580,6 +618,7 @@ let pendingNextNodesTask: Promise<unknown> | null = null // 跟踪 onChange 触
 const approveReasonForm = reactive({
   reason: '',
   signPicUrl: '',
+  attachments: [] as string[],
   nextAssignees: {}
 })
 const approveReasonRule = computed(() => {
@@ -599,7 +638,8 @@ const approveReasonRule = computed(() => {
 // 拒绝表单
 const rejectFormRef = ref<FormInstance>()
 const rejectReasonForm = reactive({
-  reason: ''
+  reason: '',
+  attachments: [] as string[]
 })
 const rejectReasonRule = computed(() => {
   return {
@@ -736,6 +776,12 @@ const closePopover = (type: string, formRef: FormInstance | undefined) => {
   if (formRef) {
     formRef.resetFields()
   }
+  if (type === 'approve') {
+    approveReasonForm.attachments = []
+  }
+  if (type === 'reject') {
+    rejectReasonForm.attachments = []
+  }
   popOverVisible.value[type] = false
   nextAssigneesActivityNode.value = []
   // 清理 Timeline 组件中的自定义审批人数据
@@ -837,6 +883,7 @@ const handleAudit = async (pass: boolean, formRef: FormInstance | undefined) =>
       const data = {
         id: runningTask.value.id,
         reason: approveReasonForm.reason,
+        attachments: approveReasonForm.attachments,
         variables, // 审批通过, 把修改的字段值赋于流程实例变量
         nextAssignees: approveReasonForm.nextAssignees // 下个自选节点选择的审批人信息
       } as any
@@ -861,7 +908,8 @@ const handleAudit = async (pass: boolean, formRef: FormInstance | undefined) =>
       // 审批不通过数据
       const data = {
         id: runningTask.value.id,
-        reason: rejectReasonForm.reason
+        reason: rejectReasonForm.reason,
+        attachments: rejectReasonForm.attachments
       }
       await TaskApi.rejectTask(data)
       popOverVisible.value.reject = false
@@ -869,6 +917,8 @@ const handleAudit = async (pass: boolean, formRef: FormInstance | undefined) =>
     }
     // 重置表单
     formRef.resetFields()
+    approveReasonForm.attachments = []
+    rejectReasonForm.attachments = []
     // 加载最新数据
     reload()
   } finally {

src/views/bpm/processInstance/detail/ProcessInstanceTimeline.vue

@@ -129,14 +129,33 @@
             </div>
             <teleport defer :to="`#activity-task-${activity.id}-${index}`">
               <div
-                v-if="
-                  task.reason &&
-                  [NodeType.USER_TASK_NODE, NodeType.END_EVENT_NODE].includes(activity.nodeType)
-                "
+                v-if="shouldShowReasonAndAttachment(task, activity.nodeType)"
                 class="text-#a5a5a5 text-13px mt-1 w-full bg-#f8f8fa p2 rounded-md"
               >
                 <!-- TODO lesan：这里如果是办理，需要是办理意见 -->
-                审批意见：{{ task.reason }}
+                <div v-if="task.reason">审批意见：{{ task.reason }}</div>
+                <div v-if="task.attachments?.length" class="mt-2 flex flex-wrap gap-2">
+                  <template v-for="attachment in task.attachments" :key="attachment">
+                    <el-image
+                      v-if="isImageAttachment(attachment)"
+                      class="h-40px w-40px rounded"
+                      :src="attachment"
+                      :preview-src-list="[attachment]"
+                      fit="cover"
+                      preview-teleported
+                    />
+                    <el-link
+                      v-else
+                      :href="attachment"
+                      :underline="false"
+                      target="_blank"
+                      type="primary"
+                    >
+                      <Icon class="mr-1" icon="ep:document" />
+                      {{ getAttachmentName(attachment) }}
+                    </el-link>
+                  </template>
+                </div>
               </div>
               <div
                 v-if="task.signPicUrl && activity.nodeType === NodeType.USER_TASK_NODE"
@@ -316,6 +335,34 @@ const getApprovalNodeTime = (node: ProcessInstanceApi.ApprovalNodeInfo) => {
   }
 }
 
+/** 是否展示审批意见和附件 */
+const shouldShowReasonAndAttachment = (
+  task: ProcessInstanceApi.ApprovalTaskInfo,
+  nodeType: NodeType
+) => {
+  return (
+    Boolean(task.reason || task.attachments?.length) &&
+    [NodeType.START_USER_NODE, NodeType.USER_TASK_NODE, NodeType.END_EVENT_NODE].includes(nodeType)
+  )
+}
+
+/** 获取附件名 */
+const getAttachmentName = (url: string) => {
+  const cleanUrl = url.split(/[?#]/)[0]
+  const fileName = cleanUrl.slice(cleanUrl.lastIndexOf('/') + 1)
+  try {
+    return decodeURIComponent(fileName)
+  } catch {
+    return fileName
+  }
+}
+
+/** 是否图片附件 */
+const isImageAttachment = (url: string) => {
+  const ext = url.split(/[?#]/)[0]?.split('.').pop()?.toLowerCase()
+  return ['bmp', 'gif', 'jpeg', 'jpg', 'png', 'webp'].includes(ext || '')
+}
+
 // 选择自定义审批人
 const userSelectFormRef = ref()
 const handleSelectUser = (activityId, selectedList) => {