添加了注释，完善了参数校验及空值处理

app/src/main/java/com/sw/inbound/viewmodel/SelfProcurementViewModel.kt

@@ -4,6 +4,7 @@ import androidx.lifecycle.viewModelScope
 import com.sw.inbound.GlobalData
 import com.sw.inbound.ext.toSafeBigDecimal
 import com.sw.inbound.ext.toSafeDouble
+import com.sw.inbound.ext.toSafeString
 import com.sw.inbound.model.request.GoodsAddParam
 import com.sw.inbound.model.request.PurchaseWarehouseParam
 import com.sw.inbound.model.response.DictType
@@ -15,12 +16,14 @@ import dagger.hilt.android.lifecycle.HiltViewModel
 import kotlinx.coroutines.delay
 import kotlinx.coroutines.flow.MutableStateFlow
 import kotlinx.coroutines.flow.StateFlow
-import kotlinx.coroutines.flow.asStateFlow
 import kotlinx.coroutines.flow.update
 import kotlinx.coroutines.launch
 import timber.log.Timber
 import javax.inject.Inject
 
+/**
+ * 自采购
+ */
 @HiltViewModel
 class SelfProcurementViewModel @Inject constructor(
     private val repository: RemoteRepository
@@ -39,6 +42,7 @@ class SelfProcurementViewModel @Inject constructor(
     private val _globalWarehouse = MutableStateFlow<DictType>(DictType(-1, "选择仓库"))
     val globalWarehouse: StateFlow<DictType> = _globalWarehouse
 
+    // 采购列表
     private val _purchaseList = MutableStateFlow<List<PurchaseWarehouseParam>>(emptyList())
     val purchaseList: StateFlow<List<PurchaseWarehouseParam>> = _purchaseList
 
@@ -58,14 +62,6 @@ class SelfProcurementViewModel @Inject constructor(
     private val _weightInfo = MutableStateFlow<Double?>(0.0)
     val weightInfo: StateFlow<Double?> = _weightInfo
 
-
-    private val _showCameraPreview = MutableStateFlow(true)
-    val showCameraPreview = _showCameraPreview.asStateFlow()
-
-    fun updateCameraPreviewShow(show: Boolean) {
-        _showCameraPreview.value = show
-    }
-
     /**
      * 数量是否是用户输入的值
      */
@@ -95,6 +91,9 @@ class SelfProcurementViewModel @Inject constructor(
                 Timber.d("startSensorScale weight = $weight, count = $count, finalCount = $finalCount, consumeValue = $consumeValue, purchaseValue = $purchaseValue")
                 _selectedItem.value = info.copy(
                     goodsWeight = weight.toSafeBigDecimal(),
+                    goodsCountTemp = if (_countUserInput.value) info.goodsCountTemp else count.toSafeString(
+                        currentItem.unitName
+                    ),
                     goodsCount = if (_countUserInput.value) info.goodsCount else finalCount
                 )
             }
@@ -124,6 +123,10 @@ class SelfProcurementViewModel @Inject constructor(
 
     // 添加订单
     fun addPurchaseItem(purchaseOrder: PurchaseWarehouseParam) {
+        if (_purchaseList.value.any { it.goodsId == purchaseOrder.goodsId }) {
+            ToastUtils.showToast("添加失败，当前物品已添加")
+            return
+        }
         _purchaseList.update { currentList ->
             // 当已经添加过则忽略
             if (currentList.any { it.goodsId == purchaseOrder.goodsId }) {
@@ -181,9 +184,9 @@ class SelfProcurementViewModel @Inject constructor(
             delay(50)
             _selectedItem.value = PurchaseWarehouseParam(
                 warehouseId = warehouse.id,
-                goodsId = searchFirst.goodsId!!,
+                goodsId = searchFirst.goodsId ?: 0,
                 goodsName = searchFirst.goodsName,
-                kcUnitId = searchFirst.kcUnitId!!,
+                kcUnitId = searchFirst.kcUnitId ?: 0,
                 unitList = searchFirst.unitVoList,
             )
         }
@@ -220,6 +223,7 @@ class SelfProcurementViewModel @Inject constructor(
                 return@launchWithLoading
             }
             _showAddProductDialog.value = false
+            _goodsAddParam.value = GoodsAddParam()
             val searchFirst = response.data!!.records?.get(0)
             searchFirst?.let {
                 updateSelectedItemWithSearch(searchFirst)
@@ -229,7 +233,10 @@ class SelfProcurementViewModel @Inject constructor(
     }
 
     fun addToWarehouse() {
-        if (_purchaseList.value.isEmpty()) return
+        if (_purchaseList.value.isEmpty()) {
+            ToastUtils.showToast("采购列表为空")
+            return
+        }
         launchWithLoading {
             val response = repository.selfPurchaseWarehousing(_purchaseList.value)
             if (parseResponse(response)) {