feat(face): 新增人脸库展示与增量更新支持

- 在PLC设置界面新增人脸库统计模块，显示人脸总数并支持刷新
- 人脸总数数据从本地数据库异步查询并更新界面
- 修改API接口调用，采用POST请求体方式提交人脸数据（包含url和特征字符串）
- 在网络调用中实现人脸数据的增量分页获取，递归拉取所有数据页
- 维护人脸数据的最大时间戳，确保增量更新只处理最新数据
- 优化人脸数据缓存逻辑，第一页重置数据并同步时间戳
- 添加FeatureBody数据类封装人脸特征请求体参数
- 修正相关仓库层方法以适配新的API接口参数和返回结构

app/src/main/java/com/sw/platecabinet/activity/PlcSettingActivity.kt

@@ -5,6 +5,7 @@ import android.content.Intent
 import android.view.inputmethod.InputMethodManager
 import androidx.lifecycle.lifecycleScope
 import com.sw.plate.utils.ToastUtils
+import com.sw.plate.utils.arcface.facedb.FaceDatabase
 import com.sw.plate.utils.arcface.faceserver.FaceServer
 import com.sw.platecabinet.databinding.ActivityPlcSettingBinding
 import com.sw.platecabinet.databinding.ItemTitleTimeBinding
@@ -60,6 +61,7 @@ class PlcSettingActivity : BaseActivity<ActivityPlcSettingBinding>() {
         initAlarmButton()
         initParamButtons()
         initStatusButton()
+        initFaceCount()
         binding.btnSwitchEnv.setOnClickListener {
             EnvSwitchDialog(context = this, onEnvChanged = {
                 showWaitingDialog("重置人脸数据中……")
@@ -334,6 +336,30 @@ class PlcSettingActivity : BaseActivity<ActivityPlcSettingBinding>() {
         """.trimIndent()
     }
 
+    // ==================== 人脸库统计 ====================
+
+    /**
+     * 初始化人脸库统计区：页面加载时查询并显示人脸总数，绑定刷新按钮
+     */
+    private fun initFaceCount() {
+        refreshFaceCount()
+        binding.btnRefreshFaceCount.clickWithDebounce {
+            refreshFaceCount()
+        }
+    }
+
+    /**
+     * 从数据库查询人脸总数并更新 UI
+     */
+    private fun refreshFaceCount() {
+        lifecycleScope.launch {
+            val count = withContext(Dispatchers.IO) {
+                FaceDatabase.getInstance(this@PlcSettingActivity).faceDao().faceCount
+            }
+            binding.tvFaceCount.text = "人脸总数：${count}"
+        }
+    }
+
     // ==================== 生命周期 ====================
 
     /**

app/src/main/java/com/sw/platecabinet/model/request/FeatureBody.kt

@@ -0,0 +1,6 @@
+package com.sw.platecabinet.model.request
+
+data class FeatureBody(
+    val url:String,
+    val featureChar:String
+)

app/src/main/java/com/sw/platecabinet/network/api/ApiServiceV2.kt

@@ -2,6 +2,7 @@ package com.sw.platecabinet.network.api
 
 import com.sw.platecabinet.GlobalData
 import com.sw.platecabinet.model.DeviceConfigV2
+import com.sw.platecabinet.model.request.FeatureBody
 import com.sw.platecabinet.model.response.ApiResponse
 import com.sw.platecabinet.model.response.UserFaceModel
 import com.sw.platecabinet.model.response.UserFaceModelV2
@@ -46,11 +47,9 @@ interface ApiServiceV2 {
      * 添加人脸数据
      */
     @POST
-    @FormUrlEncoded
     suspend fun addUserFace(
         @Url url: String = "${GlobalData.appBaseUrl}/nutrition/neglect/user/add-by-face",
-        @Field("featureChar") faceData: String,
-        @Field("url") imageUr: String
+        @Body faceData: FeatureBody
     ): ApiResponse<UserFaceModelV2?>
 
     /**

app/src/main/java/com/sw/platecabinet/repository/RemoteRepositoryV2.kt

@@ -1,6 +1,7 @@
 package com.sw.platecabinet.repository
 
 import com.sw.platecabinet.model.DeviceConfigV2
+import com.sw.platecabinet.model.request.FeatureBody
 import com.sw.platecabinet.model.response.ApiResponse
 import com.sw.platecabinet.model.response.UserFaceModel
 import com.sw.platecabinet.model.response.UserFaceModelV2
@@ -25,8 +26,7 @@ class RemoteRepositoryV2 constructor(
         return safeApiCall {
             apiService.getUserFaceCache(
                 param = mapOf(
-                    "pageNum" to pageNum,
-                    "pageSize" to pageSize
+                    "pageNum" to pageNum, "pageSize" to pageSize
                 )
             )
         }
@@ -34,16 +34,12 @@ class RemoteRepositoryV2 constructor(
 
 
     suspend fun getFaceIncrementList(
-        pageNum: Long,
-        pageSize: Long = 100L,
-        timestamp: Long
+        pageNum: Long, pageSize: Long = 100L, timestamp: Long
     ): ApiResponse<List<UserFaceModelV2>?> {
         return safeApiCall {
             apiService.getFaceIncrementList(
                 param = mapOf(
-                    "pageNum" to pageNum,
-                    "pageSize" to pageSize,
-                    "timestamp" to timestamp
+                    "pageNum" to pageNum, "pageSize" to pageSize, "timestamp" to timestamp
                 )
             )
         }
@@ -53,8 +49,14 @@ class RemoteRepositoryV2 constructor(
         return safeApiCall { apiService.getDeviceConfig() }
     }
 
-    suspend fun addUserFace(faceData: String, imageUr: String): ApiResponse<UserFaceModelV2?> {
-        return safeApiCall { apiService.addUserFace(faceData = faceData, imageUr = imageUr) }
+    suspend fun addUserFace(faceData: String, imageUrl: String): ApiResponse<UserFaceModelV2?> {
+        return safeApiCall {
+            apiService.addUserFace(
+                faceData = FeatureBody(
+                    url = imageUrl, featureChar = faceData
+                )
+            )
+        }
     }
 
     suspend fun uploadImage(file: File): ApiResponse<String?> {

app/src/main/java/com/sw/platecabinet/viewmodel/NetViewModelV2.kt

@@ -82,12 +82,17 @@ class NetViewModelV2 : ViewModel() {
             }
             withContext(Dispatchers.Default) {
                 if (currentPageNo == 1) {
-                    //第一页数据删除本地数据库
+                    //第一页数据删除本地数据库，同时重置时间戳
                     faceApi.clearFaceData()
+                    faceTimestamp = 0L
                 }
                 faceApi.updateFaceData(pageNo, faceEntityList)
                 if (list.size >= pageSize) {
-                    faceTimestamp = list.last().faceUpdateTimestamp ?: 0
+                    // 取当前页最大时间戳，与已累积的比较取最大值
+                    val pageMaxTimestamp = maxFaceTimestamp(list)
+                    if (pageMaxTimestamp > faceTimestamp) {
+                        faceTimestamp = pageMaxTimestamp
+                    }
                     currentPageNo++
                     getUserFaceCache(
                         pageNo = currentPageNo, callback = callback
@@ -95,7 +100,11 @@ class NetViewModelV2 : ViewModel() {
                     return@withContext
                 }
                 if (list.isNotEmpty()) {
-                    faceTimestamp = list.last().faceUpdateTimestamp ?: 0
+                    // 最后一页：取当前页最大时间戳，与已累积的比较取最大值
+                    val pageMaxTimestamp = maxFaceTimestamp(list)
+                    if (pageMaxTimestamp > faceTimestamp) {
+                        faceTimestamp = pageMaxTimestamp
+                    }
                 }
                 SpTool.lastFaceTimestamp = faceTimestamp
                 callback(true, "查询完成")
@@ -161,7 +170,7 @@ class NetViewModelV2 : ViewModel() {
 
 
     /**
-     * 获取人脸数据
+     * 增量获取人脸数据（支持分页递归，取所有页中的最大时间戳）
      */
     fun getFaceIncrementList(
         pageNo: Int = 1,
@@ -169,9 +178,10 @@ class NetViewModelV2 : ViewModel() {
         timestamp: Long,
         refreshFaceList: () -> Unit
     ) {
+        var currentPageNo = pageNo
         viewModelScope.launch {
             val response = repository.getFaceIncrementList(
-                pageNum = pageNo.toLong(),
+                pageNum = currentPageNo.toLong(),
                 pageSize = pageSize.toLong(),
                 timestamp = timestamp
             )
@@ -181,10 +191,27 @@ class NetViewModelV2 : ViewModel() {
             withContext(Dispatchers.IO) {
                 val list = response.data ?: emptyList()
                 updateFaceData(list)
-                if (list.isNotEmpty()) {
-                    faceTimestamp = list.last().faceUpdateTimestamp ?: 0
+                // 取当前页最大时间戳，与已累积的比较取最大值
+                val pageMaxTimestamp = maxFaceTimestamp(list)
+                if (pageMaxTimestamp > faceTimestamp) {
+                    faceTimestamp = pageMaxTimestamp
+                }
+                if (list.size >= pageSize) {
+                    // 还有下一页，继续递归拉取
+                    currentPageNo++
+                    getFaceIncrementList(
+                        pageNo = currentPageNo,
+                        pageSize = pageSize,
+                        timestamp = timestamp,
+                        refreshFaceList = refreshFaceList
+                    )
+                    return@withContext
+                }
+                // 所有页拉取完毕，保存最终时间戳（只升不降）
+                val storedTimestamp = SpTool.lastFaceTimestamp
+                if (faceTimestamp > storedTimestamp) {
+                    SpTool.lastFaceTimestamp = faceTimestamp
                 }
-                SpTool.lastFaceTimestamp = faceTimestamp
                 try {
                     refreshFaceList()
                 } catch (e: Exception) {
@@ -246,4 +273,11 @@ class NetViewModelV2 : ViewModel() {
         }
     }
 
+    /**
+     * 从人脸数据列表中取出最大的 faceUpdateTimestamp（跳过 null 值）
+     */
+    private fun maxFaceTimestamp(list: List<UserFaceModelV2>): Long {
+        return list.mapNotNull { it.faceUpdateTimestamp }.maxOrNull() ?: 0L
+    }
+
 }

app/src/main/res/layout/activity_plc_setting.xml

@@ -324,6 +324,54 @@
                 android:textColor="#FFCC99"
                 android:textSize="22sp" />
 
+            <!-- ===== 人脸库 ===== -->
+            <TextView
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="24dp"
+                android:text="人脸库"
+                android:textColor="#FFCC99"
+                android:textSize="20sp"
+                android:textStyle="bold" />
+
+            <LinearLayout
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="10dp"
+                android:orientation="horizontal">
+
+                <TextView
+                    android:id="@+id/tvFaceCount"
+                    android:layout_width="0dp"
+                    android:layout_height="60dp"
+                    android:layout_weight="1"
+                    android:background="@drawable/btn_outline"
+                    android:gravity="center"
+                    android:text="人脸总数：--"
+                    android:textColor="#FFCC99"
+                    android:textSize="20sp" />
+
+                <View
+                    android:layout_width="20dp"
+                    android:layout_height="1dp" />
+
+                <TextView
+                    android:id="@+id/btnRefreshFaceCount"
+                    android:layout_width="0dp"
+                    android:layout_height="60dp"
+                    android:layout_weight="1"
+                    android:background="@drawable/btn_outline"
+                    android:gravity="center"
+                    android:text="刷新"
+                    android:textColor="#FFCC99"
+                    android:textSize="20sp" />
+
+            </LinearLayout>
+
+            <View
+                android:layout_width="match_parent"
+                android:layout_height="30dp" />
+
         </LinearLayout>
     </ScrollView>