refactor(loan-application): dialogs (#2959)

Author: Nagarjuna0033

feature/loan-application/src/commonMain/kotlin/org/mifos/mobile/feature/loan/application/confirmDetails/ConfirmDetailsScreen.kt

@@ -37,10 +37,12 @@ import org.mifos.mobile.core.designsystem.component.MifosElevatedScaffold
 import org.mifos.mobile.core.designsystem.theme.DesignToken
 import org.mifos.mobile.core.designsystem.theme.MifosTypography
 import org.mifos.mobile.core.ui.component.MifosDetailsCard
+import org.mifos.mobile.core.ui.component.MifosErrorComponent
 import org.mifos.mobile.core.ui.component.MifosPoweredCard
 import org.mifos.mobile.core.ui.component.MifosProgressIndicator
 import org.mifos.mobile.core.ui.component.MifosProgressIndicatorOverlay
 import org.mifos.mobile.core.ui.utils.EventsEffect
+import org.mifos.mobile.core.ui.utils.ScreenUiState
 
 @Composable
 internal fun ConfirmDetailsScreen(
@@ -99,10 +101,6 @@ internal fun ConfirmDetailsDialog(
             )
         }
 
-        ConfirmDetailsDialogState.Loading -> MifosProgressIndicator()
-
-        ConfirmDetailsDialogState.OverlayLoading -> MifosProgressIndicatorOverlay()
-
         null -> {}
     }
 }
@@ -126,27 +124,52 @@ internal fun ConfirmDetailsScreenContent(
             }
         },
     ) {
-        Column(
-            modifier = modifier
-                .padding(DesignToken.padding.large)
-                .padding(top = DesignToken.padding.medium)
-                .verticalScroll(rememberScrollState()),
-            verticalArrangement = Arrangement.spacedBy(DesignToken.spacing.extraLarge),
-        ) {
-            MifosDetailsCard(state.details)
+        when (state.uiState) {
+            is ScreenUiState.Error -> {
+                MifosErrorComponent(
+                    isRetryEnabled = false,
+                    message = stringResource(state.uiState.message),
+                )
+            }
+
+            ScreenUiState.Loading -> MifosProgressIndicator()
 
-            MifosButton(
-                modifier = Modifier.fillMaxWidth().height(DesignToken.sizes.inputHeight),
-                onClick = {
-                    onAction(ConfirmDetailsAction.NavigateToAuthenticate)
-                },
-                shape = DesignToken.shapes.medium,
-            ) {
-                Text(
-                    text = stringResource(Res.string.feature_apply_loan_title),
-                    style = MifosTypography.titleMedium,
+            ScreenUiState.Network -> {
+                MifosErrorComponent(
+                    isNetworkConnected = false,
+                    isRetryEnabled = false,
                 )
             }
+
+            ScreenUiState.Success -> {
+                Column(
+                    modifier = modifier
+                        .padding(DesignToken.padding.large)
+                        .padding(top = DesignToken.padding.medium)
+                        .verticalScroll(rememberScrollState()),
+                    verticalArrangement = Arrangement.spacedBy(DesignToken.spacing.extraLarge),
+                ) {
+                    MifosDetailsCard(state.details)
+
+                    MifosButton(
+                        modifier = Modifier.fillMaxWidth().height(DesignToken.sizes.inputHeight),
+                        onClick = {
+                            onAction(ConfirmDetailsAction.NavigateToAuthenticate)
+                        },
+                        shape = DesignToken.shapes.medium,
+                    ) {
+                        Text(
+                            text = stringResource(Res.string.feature_apply_loan_title),
+                            style = MifosTypography.titleMedium,
+                        )
+                    }
+                }
+
+                if (state.showOverlay) {
+                    MifosProgressIndicatorOverlay()
+                }
+            }
+            else -> { }
         }
     }
 }

feature/loan-application/src/commonMain/kotlin/org/mifos/mobile/feature/loan/application/confirmDetails/ConfirmDetailsViewModel.kt

@@ -27,6 +27,7 @@ import mifos_mobile.feature.loan_application.generated.resources.feature_apply_l
 import mifos_mobile.feature.loan_application.generated.resources.feature_apply_loan_status_success
 import mifos_mobile.feature.loan_application.generated.resources.feature_apply_loan_status_success_action
 import mifos_mobile.feature.loan_application.generated.resources.feature_apply_loan_status_success_tip
+import okio.IOException
 import org.jetbrains.compose.resources.StringResource
 import org.jetbrains.compose.resources.getString
 import org.mifos.mobile.core.common.DataState
@@ -41,6 +42,7 @@ import org.mifos.mobile.core.model.enums.LoanState
 import org.mifos.mobile.core.ui.utils.AuthResult
 import org.mifos.mobile.core.ui.utils.BaseViewModel
 import org.mifos.mobile.core.ui.utils.ResultNavigator
+import org.mifos.mobile.core.ui.utils.ScreenUiState
 import org.mifos.mobile.core.ui.utils.observe
 
 /**
@@ -122,21 +124,22 @@ internal class ConfirmDetailsViewModel(
      */
     @Suppress("UnusedPrivateMember")
     private fun showLoading() {
-        updateState { it.copy(dialogState = ConfirmDetailsDialogState.Loading) }
+        updateState { it.copy(uiState = ScreenUiState.Loading) }
     }
 
     /**
      * Sets the dialog state to an overlay loading spinner.
      */
     private fun showOverlayLoading() {
-        updateState { it.copy(dialogState = ConfirmDetailsDialogState.OverlayLoading) }
+        updateState { it.copy(showOverlay = !state.showOverlay) }
     }
 
     /**
      * Displays an error dialog with a given message.
      *
      * @param error The [StringResource] for the error message to display.
      */
+    @Suppress("UnusedPrivateMember")
     private fun showErrorDialog(error: StringResource) {
         updateState { it.copy(dialogState = ConfirmDetailsDialogState.Error(error)) }
     }
@@ -230,13 +233,23 @@ internal class ConfirmDetailsViewModel(
             is DataState.Success -> {
                 updateState {
                     it.copy(
+                        showOverlay = false,
                         loanTemplate = template.data,
                     )
                 }
                 sendAction(ConfirmDetailsAction.Internal.ApplyLoan)
             }
             is DataState.Error -> {
-                showErrorDialog(Res.string.feature_apply_loan_error_server)
+                updateState {
+                    it.copy(
+                        showOverlay = false,
+                        uiState = if (template.exception is IOException) {
+                            ScreenUiState.Network
+                        } else {
+                            ScreenUiState.Error(Res.string.feature_apply_loan_error_server)
+                        },
+                    )
+                }
             }
         }
     }
@@ -268,6 +281,9 @@ internal class ConfirmDetailsViewModel(
     private suspend fun handleLoanApplyStatus(status: DataState<String>) {
         when (status) {
             is DataState.Error -> {
+                updateState {
+                    it.copy(showOverlay = false)
+                }
                 sendEvent(
                     ConfirmDetailsEvent.NavigateToStatus(
                         eventType = EventType.FAILURE.name,
@@ -343,7 +359,10 @@ internal data class ConfirmDetailsState(
     val principalAmount: String,
     val details: Map<StringResource, String> = emptyMap(),
     val loanTemplate: LoanTemplate? = null,
+
+    val showOverlay: Boolean = false,
     val dialogState: ConfirmDetailsDialogState? = null,
+    val uiState: ScreenUiState? = ScreenUiState.Success,
 )
 
 /**
@@ -435,12 +454,6 @@ sealed interface ConfirmDetailsAction {
  * shown on the confirm details screen.
  */
 internal sealed interface ConfirmDetailsDialogState {
-    /** Represents an overlay loading state. */
-    data object OverlayLoading : ConfirmDetailsDialogState
-
-    /** Represents a full-screen loading state. */
-    data object Loading : ConfirmDetailsDialogState
-
     /**
      * Represents a generic error dialog with a message.
      * @property message The [StringResource] for the error message.