From a8520e20ba5f31fb853fd4a4b05c34e612d95de4 Mon Sep 17 00:00:00 2001
From: chenjiale <cjl601523@gmail.com>
Date: Wed, 24 Dec 2025 13:54:30 +0800
Subject: [PATCH] =?UTF-8?q?```=20feat(alert):=20=E4=B8=BA=E6=A8=A1?=
 =?UTF-8?q?=E5=9E=8B=E5=8D=A1=E7=89=87=E5=88=97=E8=A1=A8=E6=B7=BB=E5=8A=A0?=
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- 添加 PageResult 泛型接口用于分页数据结构
- 添加 ModelCardQueryParams 接口支持分页参数
- 修改 modelCardListApi 返回类型为 PageResult<ModelCardItem>
- 实现无限滚动加载功能，使用 IntersectionObserver 监听滚动
- 添加加载状态显示（加载中、没有更多、暂无数据）
- 优化模型列表加载逻辑，支持追加加载模式
- 添加页面生命周期钩子处理
---
 src/api/alert/model/model/models.ts |  13 +++
 src/api/alert/model/models.ts       |   6 +-
 src/views/model/list/ModelCard.vue  | 134 ++++++++++++++++++++++++----
 3 files changed, 135 insertions(+), 18 deletions(-)

diff --git a/src/api/alert/model/model/models.ts b/src/api/alert/model/model/models.ts
index 0a2dcca..1fbe97e 100644
--- a/src/api/alert/model/model/models.ts
+++ b/src/api/alert/model/model/models.ts
@@ -7,6 +7,14 @@ export interface ModelCardItem {
   createTime: string
 }
 
+export interface PageResult<T> {
+  total: number
+  current: number
+  size: number
+  records: T[]
+  pages: number
+}
+
 interface MovingWindows {
   windowLength: number
   samplingInterval: number
@@ -32,3 +40,8 @@ export interface ModelQueryParams {
   visible?: number | null
   trash?: number | null
 }
+
+export interface ModelCardQueryParams extends ModelQueryParams {
+  pageNo?: number
+  pageSize?: number
+}
diff --git a/src/api/alert/model/models.ts b/src/api/alert/model/models.ts
index ce101ed..c0c9041 100644
--- a/src/api/alert/model/models.ts
+++ b/src/api/alert/model/models.ts
@@ -1,4 +1,4 @@
-import type { ModelCardItem, ModelInfo, ModelQueryParams } from './model/models'
+import type { ModelCardItem, ModelCardQueryParams, ModelInfo, PageResult } from './model/models'
 import { defHttp } from '@/utils/http/axios'
 
 enum Api {
@@ -17,8 +17,8 @@ enum Api {
   VERSION_LIST = '/alert/model/version/',
   VERSION_NEW = '/alert/model/version/new/',
 }
-export function modelCardListApi(params?: ModelQueryParams) {
-  return defHttp.get<ModelCardItem[]>({ url: Api.MODEL_CARD_LIST, params })
+export function modelCardListApi(params?: ModelCardQueryParams) {
+  return defHttp.get<PageResult<ModelCardItem>>({ url: Api.MODEL_CARD_LIST, params })
 }
 
 export const modelInfoApi = (idOrPath: any) => defHttp.get<any>({ url: `${Api.MODEL_INFO}/${idOrPath}` })
diff --git a/src/views/model/list/ModelCard.vue b/src/views/model/list/ModelCard.vue
index 29ce180..16aa61c 100644
--- a/src/views/model/list/ModelCard.vue
+++ b/src/views/model/list/ModelCard.vue
@@ -1,11 +1,11 @@
 <script lang="ts" setup>
 import { Card, Dropdown, Menu, Popconfirm } from 'ant-design-vue'
 import type { PropType } from 'vue'
-import { ref, watch } from 'vue'
+import { onBeforeUnmount, onMounted, ref, watch } from 'vue'
 import type { ModelItem } from './data'
 import Icon from '@/components/Icon/index'
 import { modelCardListApi, modelDeleteApi } from '@/api/alert/model/models'
-import type { ModelQueryParams } from '@/api/alert/model/model/models'
+import type { ModelCardQueryParams } from '@/api/alert/model/model/models'
 import { useGo } from '@/hooks/web/usePage'
 import { useMessage } from '@/hooks/web/useMessage'
 
@@ -34,12 +34,19 @@ function changeModel(id, version?) {
 }
 
 const modelCardList = ref<Array<ModelItem>>([])
-const lastQuery = ref<ModelQueryParams | null>(null)
+const rootRef = ref<HTMLElement | null>(null)
+const loadMoreTriggerRef = ref<HTMLElement | null>(null)
+const lastQuery = ref<ModelCardQueryParams | null>(null)
+const pageNo = ref(1)
+const pageSize = 25
+const listLoading = ref(false)
+const noMore = ref(false)
+let loadMoreObserver: IntersectionObserver | null = null
 const colors = ['#8dc63f', '#dbb09e']
 const statusStr = ['未下装', '已下装']
 const statusIcons = ['ant-design:unlock-outlined', 'ant-design:lock-outlined']
 
-function buildQuery(value: any): ModelQueryParams {
+function buildQuery(value: any): ModelCardQueryParams {
   return {
     unitId: value?.unit,
     typeId: value?.type,
@@ -48,14 +55,7 @@ function buildQuery(value: any): ModelQueryParams {
   }
 }
 
-async function loadModelList(value: any) {
-  const queryParams = buildQuery(value)
-  lastQuery.value = queryParams
-  const modelList = await modelCardListApi(queryParams)
-  if (!modelList) {
-    modelCardList.value = []
-    return
-  }
+function normalizeCards(modelList: any[] = []): ModelItem[] {
   const cardList: ModelItem[] = []
   for (const modelCard of modelList) {
     const statusIndex = Number(modelCard.status) || 0
@@ -78,7 +78,40 @@ async function loadModelList(value: any) {
     }
     cardList.push(card)
   }
-  modelCardList.value = cardList
+  return cardList
+}
+
+async function fetchModelList(queryParams: ModelCardQueryParams, append: boolean) {
+  if (listLoading.value)
+    return
+  listLoading.value = true
+  try {
+    const pageResult = await modelCardListApi({
+      ...queryParams,
+      pageNo: pageNo.value,
+      pageSize,
+    })
+    if (!pageResult) {
+      modelCardList.value = []
+      noMore.value = true
+      return
+    }
+    const records = pageResult.records || []
+    const cardList = normalizeCards(records)
+    modelCardList.value = append ? modelCardList.value.concat(cardList) : cardList
+    noMore.value = pageResult.pages ? pageResult.current >= pageResult.pages : records.length < pageSize
+  }
+  finally {
+    listLoading.value = false
+  }
+}
+
+async function loadModelList(value: any) {
+  pageNo.value = 1
+  noMore.value = false
+  const queryParams = buildQuery(value)
+  lastQuery.value = queryParams
+  await fetchModelList(queryParams, false)
 }
 
 watch(
@@ -103,16 +136,64 @@ function goCreateModel() {
     query.push(`unitId=${encodeURIComponent(String(props.unitId))}`)
   go(`/model/create${query.length ? `?${query.join('&')}` : ''}`)
 }
+
+async function loadMore() {
+  if (listLoading.value || noMore.value || !lastQuery.value)
+    return
+  pageNo.value += 1
+  await fetchModelList(lastQuery.value, true)
+}
+
+function getScrollParent(el: HTMLElement | null) {
+  let current = el?.parentElement || null
+  while (current) {
+    const style = window.getComputedStyle(current)
+    if (/(auto|scroll)/.test(style.overflowY))
+      return current
+    current = current.parentElement
+  }
+  return null
+}
+
+function initLoadMoreObserver() {
+  if (loadMoreObserver) {
+    loadMoreObserver.disconnect()
+    loadMoreObserver = null
+  }
+  const target = loadMoreTriggerRef.value
+  if (!target)
+    return
+  const root = getScrollParent(rootRef.value)
+  loadMoreObserver = new IntersectionObserver(
+    (entries) => {
+      if (entries.some(entry => entry.isIntersecting))
+        loadMore()
+    },
+    { root, rootMargin: '160px 0px' },
+  )
+  loadMoreObserver.observe(target)
+}
+
+onMounted(() => {
+  initLoadMoreObserver()
+})
+
+onBeforeUnmount(() => {
+  if (loadMoreObserver) {
+    loadMoreObserver.disconnect()
+    loadMoreObserver = null
+  }
+})
 </script>
 
 <template>
-  <div class="enter-y">
+  <div ref="rootRef" class="enter-y">
     <div class="card-grid">
       <template v-for="item in modelCardList" :key="item.title">
         <Dropdown :trigger="['contextmenu']">
           <Card
             size="small"
-            :loading="loading"
+            :loading="loading || (listLoading && !modelCardList.length)"
             :hoverable="true"
             class="model-card"
             :style="{ borderLeft: `6px solid ${item.statusColor}` }"
@@ -168,6 +249,14 @@ function goCreateModel() {
         <Icon icon="ic:sharp-add" :size="80" color="#a7a9a7" />
       </Card>
     </div>
+    <div ref="loadMoreTriggerRef" class="load-more-trigger" />
+    <div v-if="modelCardList.length" class="load-status">
+      <span v-if="listLoading">加载中...</span>
+      <span v-else-if="noMore">没有更多了</span>
+    </div>
+    <div v-else-if="!listLoading" class="load-status empty">
+      暂无数据
+    </div>
   </div>
 </template>
 
@@ -315,4 +404,19 @@ function goCreateModel() {
   background-color: #eef2ff;
   border-color: #4c7af0;
 }
+
+.load-status {
+  padding: 12px 0 4px;
+  font-size: 12px;
+  color: #9ca3af;
+  text-align: center;
+}
+
+.load-status.empty {
+  padding-top: 24px;
+}
+
+.load-more-trigger {
+  height: 1px;
+}
 </style>