feature(bank-sdk): Skonto + RA validation implementation

bank-sdk/sdk/src/main/java/net/gini/android/bank/sdk/capture/digitalinvoice/skonto/DigitalInvoiceSkontoFragment.kt

@@ -82,10 +82,13 @@ import net.gini.android.bank.sdk.capture.digitalinvoice.skonto.colors.section.Di
 import net.gini.android.bank.sdk.capture.digitalinvoice.skonto.colors.section.DigitalInvoiceSkontoInfoDialogColors
 import net.gini.android.bank.sdk.capture.digitalinvoice.skonto.colors.section.DigitalInvoiceSkontoInvoicePreviewSectionColors
 import net.gini.android.bank.sdk.capture.digitalinvoice.skonto.colors.section.DigitalInvoiceSkontoSectionColors
+import net.gini.android.bank.sdk.capture.digitalinvoice.skonto.mapper.toErrorMessage
+import net.gini.android.bank.sdk.capture.skonto.mapper.toErrorMessage
 import net.gini.android.bank.sdk.capture.skonto.model.SkontoData
 import net.gini.android.bank.sdk.capture.skonto.model.SkontoEdgeCase
 import net.gini.android.bank.sdk.di.koin.giniBankViewModel
 import net.gini.android.bank.sdk.util.disallowScreenshots
+import net.gini.android.bank.sdk.util.ui.keyboardAsState
 import net.gini.android.capture.Amount
 import net.gini.android.capture.GiniCapture
 import net.gini.android.capture.internal.util.ActivityHelper
@@ -217,6 +220,11 @@ private fun ScreenContent(
     BackHandler { navigateBack() }
 
     val state by viewModel.stateFlow.collectAsState()
+    val keyboardState by keyboardAsState()
+
+    LaunchedEffect(keyboardState) {
+        viewModel.onKeyboardStateChanged(keyboardState)
+    }
 
     viewModel.collectSideEffect {
         when (it) {
@@ -240,7 +248,7 @@ private fun ScreenContent(
         onInfoDialogDismissed = viewModel::onInfoDialogDismissed,
         onInvoiceClicked = viewModel::onInvoiceClicked,
         customBottomNavBarAdapter = customBottomNavBarAdapter,
-        onHelpClicked = viewModel::onHelpClicked
+        onHelpClicked = viewModel::onHelpClicked,
     )
 }
 
@@ -355,6 +363,7 @@ private fun ScreenReadyState(
                     onDueDateChanged = onDueDateChanged,
                     edgeCase = state.edgeCase,
                     onInfoBannerClicked = onInfoBannerClicked,
+                    skontoAmountValidationError = state.skontoAmountValidationError,
                 )
             }
         }
@@ -521,9 +530,11 @@ private fun SkontoSection(
     onInfoBannerClicked: () -> Unit,
     edgeCase: SkontoEdgeCase?,
     colors: DigitalInvoiceSkontoSectionColors,
+    skontoAmountValidationError: DigitalInvoiceSkontoScreenState.Ready.SkontoAmountValidationError?,
     modifier: Modifier = Modifier,
 ) {
     val dateFormatter = DateTimeFormatter.ofPattern("dd.MM.yyyy")
+    val resources = LocalContext.current.resources
 
     var isDatePickerVisible by remember { mutableStateOf(false) }
     Card(
@@ -638,6 +649,10 @@ private fun SkontoSection(
                         )
                     }
                 },
+                isError = skontoAmountValidationError != null,
+                supportingText = skontoAmountValidationError?.toErrorMessage(
+                    resources = resources,
+                )
             )
 
             val dueDateOnClickSource = remember { MutableInteractionSource() }
@@ -888,4 +903,5 @@ private val previewState = DigitalInvoiceSkontoScreenState.Ready(
     paymentMethod = SkontoData.SkontoPaymentMethod.PayPal,
     edgeCase = SkontoEdgeCase.PayByCashOnly,
     edgeCaseInfoDialogVisible = false,
+    skontoAmountValidationError = null
 )

bank-sdk/sdk/src/main/java/net/gini/android/bank/sdk/capture/digitalinvoice/skonto/DigitalInvoiceSkontoScreenModule.kt

@@ -1,6 +1,7 @@
 package net.gini.android.bank.sdk.capture.digitalinvoice.skonto
 
 import net.gini.android.bank.sdk.capture.digitalinvoice.skonto.args.DigitalInvoiceSkontoArgs
+import net.gini.android.bank.sdk.capture.digitalinvoice.skonto.validation.DigitalInvoiceSkontoAmountValidator
 import org.koin.androidx.viewmodel.dsl.viewModel
 import org.koin.dsl.module
 
@@ -12,7 +13,9 @@ val digitalInvoiceSkontoScreenModule = module {
             getSkontoEdgeCaseUseCase = get(),
             getSkontoRemainingDaysUseCase = get(),
             lastAnalyzedDocumentProvider = get(),
-            skontoInvoicePreviewTextLinesFactory = get()
+            skontoInvoicePreviewTextLinesFactory = get(),
+            digitalInvoiceSkontoAmountValidator = get(),
         )
     }
+    factory { DigitalInvoiceSkontoAmountValidator() }
 }

bank-sdk/sdk/src/main/java/net/gini/android/bank/sdk/capture/digitalinvoice/skonto/DigitalInvoiceSkontoScreenState.kt

@@ -6,19 +6,25 @@ import net.gini.android.capture.Amount
 import java.math.BigDecimal
 import java.time.LocalDate
 
-internal sealed class DigitalInvoiceSkontoScreenState {
+internal sealed interface DigitalInvoiceSkontoScreenState {
 
     data class Ready(
         val isSkontoSectionActive: Boolean,
         val paymentInDays: Int,
         val skontoPercentage: BigDecimal,
         val skontoAmount: Amount,
+        val skontoAmountValidationError: SkontoAmountValidationError?,
         val fullAmount: Amount,
         val discountDueDate: LocalDate,
         val paymentMethod: SkontoData.SkontoPaymentMethod,
         val edgeCase: SkontoEdgeCase?,
         val edgeCaseInfoDialogVisible: Boolean,
-    ) : DigitalInvoiceSkontoScreenState()
+    ) : DigitalInvoiceSkontoScreenState {
+
+        sealed interface SkontoAmountValidationError {
+            object SkontoAmountMoreThanFullAmount : SkontoAmountValidationError
+        }
+    }
 }
 
 internal sealed interface DigitalInvoiceSkontoSideEffect {

bank-sdk/sdk/src/main/java/net/gini/android/bank/sdk/capture/digitalinvoice/skonto/DigitalInvoiceSkontoViewModel.kt

@@ -7,6 +7,7 @@ import kotlinx.coroutines.flow.MutableStateFlow
 import kotlinx.coroutines.launch
 import net.gini.android.bank.sdk.capture.digitalinvoice.skonto.args.DigitalInvoiceSkontoArgs
 import net.gini.android.bank.sdk.capture.digitalinvoice.skonto.args.DigitalInvoiceSkontoResultArgs
+import net.gini.android.bank.sdk.capture.digitalinvoice.skonto.validation.DigitalInvoiceSkontoAmountValidator
 import net.gini.android.bank.sdk.capture.skonto.factory.lines.SkontoInvoicePreviewTextLinesFactory
 import net.gini.android.bank.sdk.capture.skonto.model.SkontoData
 import net.gini.android.bank.sdk.capture.skonto.usecase.GetSkontoDiscountPercentageUseCase
@@ -23,6 +24,7 @@ internal class DigitalInvoiceSkontoViewModel(
     private val getSkontoEdgeCaseUseCase: GetSkontoEdgeCaseUseCase,
     private val getSkontoRemainingDaysUseCase: GetSkontoRemainingDaysUseCase,
     private val skontoInvoicePreviewTextLinesFactory: SkontoInvoicePreviewTextLinesFactory,
+    private val digitalInvoiceSkontoAmountValidator: DigitalInvoiceSkontoAmountValidator,
 ) : ViewModel() {
 
     val stateFlow: MutableStateFlow<DigitalInvoiceSkontoScreenState> =
@@ -70,16 +72,26 @@ internal class DigitalInvoiceSkontoViewModel(
             paymentMethod = paymentMethod,
             edgeCase = edgeCase,
             edgeCaseInfoDialogVisible = edgeCase != null,
+            skontoAmountValidationError = null,
         )
     }
 
     fun onSkontoAmountFieldChanged(newValue: BigDecimal) = viewModelScope.launch {
         val currentState =
             stateFlow.value as? DigitalInvoiceSkontoScreenState.Ready ?: return@launch
 
-        if (newValue > currentState.fullAmount.value) {
+        val skontoAmountValidationError = digitalInvoiceSkontoAmountValidator(
+            newValue,
+            currentState.fullAmount.value
+        )
+
+        if (skontoAmountValidationError != null) {
             stateFlow.emit(
-                currentState.copy(skontoAmount = currentState.skontoAmount)
+                currentState.copy(
+                    skontoAmount = currentState.skontoAmount,
+                    skontoAmountValidationError = DigitalInvoiceSkontoScreenState.Ready
+                        .SkontoAmountValidationError.SkontoAmountMoreThanFullAmount
+                )
             )
             return@launch
         }
@@ -95,10 +107,12 @@ internal class DigitalInvoiceSkontoViewModel(
             currentState.copy(
                 skontoAmount = newSkontoAmount,
                 skontoPercentage = discount,
+                skontoAmountValidationError = null,
             )
         )
     }
 
+
     fun onSkontoDueDateChanged(newDate: LocalDate) = viewModelScope.launch {
         val currentState =
             stateFlow.value as? DigitalInvoiceSkontoScreenState.Ready ?: return@launch
@@ -115,6 +129,17 @@ internal class DigitalInvoiceSkontoViewModel(
         )
     }
 
+    fun onKeyboardStateChanged(isVisible: Boolean) = viewModelScope.launch {
+        if (isVisible) return@launch
+        val currentState =
+            stateFlow.value as? DigitalInvoiceSkontoScreenState.Ready ?: return@launch
+        stateFlow.emit(
+            currentState.copy(
+                skontoAmountValidationError = null
+            )
+        )
+    }
+
     fun onInfoBannerClicked() = viewModelScope.launch {
         val currentState =
             stateFlow.value as? DigitalInvoiceSkontoScreenState.Ready ?: return@launch

bank-sdk/sdk/src/main/java/net/gini/android/bank/sdk/capture/digitalinvoice/skonto/mapper/SkontoAmountValidationErrorMapper.kt

@@ -0,0 +1,14 @@
+package net.gini.android.bank.sdk.capture.digitalinvoice.skonto.mapper
+
+import android.content.res.Resources
+import net.gini.android.bank.sdk.R
+import net.gini.android.bank.sdk.capture.digitalinvoice.skonto.DigitalInvoiceSkontoScreenState
+
+internal fun DigitalInvoiceSkontoScreenState.Ready.SkontoAmountValidationError.toErrorMessage(
+    resources: Resources,
+): String = when (this) {
+    is DigitalInvoiceSkontoScreenState.Ready.SkontoAmountValidationError.SkontoAmountMoreThanFullAmount ->
+        resources.getString(
+            R.string.gbs_skonto_section_discount_field_amount_validation_error_skonto_amount_more_than_full_amount
+        )
+}

bank-sdk/sdk/src/main/java/net/gini/android/bank/sdk/capture/digitalinvoice/skonto/validation/DigitalInvoiceSkontoAmountValidator.kt

@@ -0,0 +1,15 @@
+package net.gini.android.bank.sdk.capture.digitalinvoice.skonto.validation
+
+import net.gini.android.bank.sdk.capture.digitalinvoice.skonto.DigitalInvoiceSkontoScreenState
+import java.math.BigDecimal
+
+internal class DigitalInvoiceSkontoAmountValidator {
+
+    operator fun invoke(newSkontoAmount: BigDecimal, fullAmount: BigDecimal)
+            : DigitalInvoiceSkontoScreenState.Ready.SkontoAmountValidationError? = when {
+        newSkontoAmount > fullAmount ->
+            DigitalInvoiceSkontoScreenState.Ready.SkontoAmountValidationError.SkontoAmountMoreThanFullAmount
+
+        else -> null
+    }
+}