refund

2026-05-22 17:32:58 +06:30 · 2026-05-22 17:32:58 +06:30 · 030eb6f836
commit 030eb6f836
parent af917520b6
8 changed files with 444 additions and 253 deletions
--- a/app/src/main/java/com/mob/utsmyanmar/ui/amount/AmountScreen.kt
+++ b/app/src/main/java/com/mob/utsmyanmar/ui/amount/AmountScreen.kt
@ -1,24 +1,12 @@
 package com.mob.utsmyanmar.ui.amount

-import androidx.compose.foundation.background
-import androidx.compose.foundation.clickable
-import androidx.compose.foundation.layout.*
-import androidx.compose.foundation.layout.Arrangement
-import androidx.compose.foundation.shape.RoundedCornerShape
-import androidx.compose.material.icons.Icons
-import androidx.compose.material.icons.rounded.Backspace
-import androidx.compose.material.icons.rounded.KeyboardArrowLeft
-import androidx.compose.material3.*
-import androidx.compose.runtime.*
-import androidx.compose.ui.Alignment
-import androidx.compose.ui.Modifier
-import androidx.compose.ui.draw.shadow
-import androidx.compose.ui.text.font.FontWeight
-import androidx.compose.ui.text.style.TextAlign
-import androidx.compose.ui.unit.dp
-import androidx.compose.ui.unit.sp
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.setValue
+import com.mob.utsmyanmar.ui.components.NumericEntryScreen
 import com.mob.utsmyanmar.ui.preview.P2Preview
-import com.mob.utsmyanmar.ui.theme.Color

@Composable
 fun AmountScreen(
@ -28,224 +16,29 @@ fun AmountScreen(
 ) {
    var amount by remember { mutableStateOf("") }

-    val displayAmount = amount.ifEmpty { "0" }
-
-    Box(
-        modifier = Modifier
-            .fillMaxSize()
-            .background(Color.IvoryBeige)
-            .navigationBarsPadding()
-            .statusBarsPadding()
-    ) {
-        Column(
-            modifier = Modifier
-                .fillMaxSize()
-                .padding(horizontal = 20.dp)
-        ) {
-            Box(
-                modifier = Modifier
-                    .fillMaxWidth()
-                    .height(56.dp),
-                contentAlignment = Alignment.Center
-            ) {
-                IconButton(
-                    onClick = onBackClick,
-                    modifier = Modifier.align(Alignment.CenterStart)
-                ) {
-                    Icon(
-                        imageVector = Icons.Rounded.KeyboardArrowLeft,
-                        contentDescription = "Back",
-                        tint = Color.LegacyRed
-                    )
-                }
-
-                Text(
-                    text = title,
-                    color = Color.LegacyRed,
-                    fontSize = 14.sp,
-                    fontWeight = FontWeight.Bold
-                )
-            }
-
-            Spacer(modifier = Modifier.height(36.dp))
-
-            Text(
-                text = "Enter $title",
-                color = Color.Gray,
-                fontSize = 11.sp,
-                modifier = Modifier.align(Alignment.CenterHorizontally)
-            )
-
-            Spacer(modifier = Modifier.height(8.dp))
-
-            Row(
-                modifier = Modifier.align(Alignment.CenterHorizontally),
-                verticalAlignment = Alignment.Bottom
-            ) {
-                Text(
-                    text = "MMK",
-                    color = Color.LegacyRed,
-                    fontSize = 13.sp,
-                    fontWeight = FontWeight.Medium,
-                    modifier = Modifier.padding(end = 10.dp, bottom = 6.dp)
-                )
-
-                Text(
-                    text = formatAmount(displayAmount),
-                    color = Color.LegacyRed,
-                    fontSize = 32.sp,
-                    fontWeight = FontWeight.Bold
-                )
-            }
-
-            Spacer(modifier = Modifier.height(12.dp))
-
-            Text(
-                text = "Enter the amount to continue",
-                color = Color.Gray,
-                fontSize = 11.sp,
-                modifier = Modifier.align(Alignment.CenterHorizontally)
-            )
-
-            Spacer(modifier = Modifier.height(28.dp))
-
-            AmountKeypad(
-                onNumberClick = { value ->
-                    amount = appendAmountValue(amount, value)
-                }
-            )
-
-            Spacer(modifier = Modifier.weight(1f))
-
-            Row(
-                modifier = Modifier.fillMaxWidth(),
-                horizontalArrangement = Arrangement.spacedBy(12.dp)
-            ) {
-                Button(
-                    onClick = { },
-                    modifier = Modifier
-                        .weight(1f)
-                        .height(56.dp),
-                    shape = RoundedCornerShape(8.dp),
-                    colors = ButtonDefaults.buttonColors(
-                        containerColor = Color.White,
-                        contentColor = Color.LegacyRed
-                    )
-                ) {
-                    Text("Cancel")
-                }
-
-                Button(
-                    onClick = {
+    NumericEntryScreen(
+        title = title,
+        prompt = "Enter $title",
+        displayValue = formatAmount(amount.ifEmpty { "0" }),
+        supportingText = "Enter the amount to continue",
+        confirmText = "Next",
+        prefixLabel = "MMK",
+        onBackClick = onBackClick,
+        onCancelClick = onBackClick,
+        onConfirmClick = {
            if (amount.isNotEmpty()) {
                onChargeClick(amount)
            }
        },
-                    modifier = Modifier
-                        .weight(1f)
-                        .height(56.dp),
-                    enabled = amount.isNotEmpty(),
-                    shape = RoundedCornerShape(8.dp),
-                    colors = ButtonDefaults.buttonColors(
-                        containerColor = Color.LegacyRed,
-                        contentColor = Color.White,
-                        disabledContainerColor = Color.LegacyRed.copy(alpha = 0.5f),
-                        disabledContentColor = Color.White
-                    )
-                ) {
-                    Text(
-                        text = "Next",
-                        fontSize = 14.sp,
-                        fontWeight = FontWeight.Medium
-                    )
-                }
-            }
-
-            Spacer(modifier = Modifier.height(18.dp))
-        }
-
-        Card(
-            modifier = Modifier
-                .align(Alignment.TopEnd)//?
-                .padding(top = 110.dp, end = 20.dp)
-                .clickable(enabled = amount.isNotEmpty()) {
+        onKeyClick = { value ->
+            amount = appendAmountValue(amount, value)
+        },
+        onDeleteClick = {
            amount = amount.dropLast(1)
        },
-            shape = RoundedCornerShape(18.dp),
-            colors = CardDefaults.cardColors(containerColor = Color.White),
-            elevation = CardDefaults.cardElevation(defaultElevation = 6.dp)
-        ) {
-            Icon(
-                imageVector = Icons.Rounded.Backspace,
-                contentDescription = "Delete",
-                tint = if (amount.isNotEmpty()) Color.LegacyRed else Color.Gray,
-                modifier = Modifier.padding(horizontal = 14.dp, vertical = 12.dp)
+        confirmEnabled = amount.isNotEmpty(),
+        canDelete = amount.isNotEmpty()
    )
-        }
-    }
-}
-
-@Composable
-private fun AmountKeypad(
-    onNumberClick: (String) -> Unit
-) {
-    val keys = listOf(
-        listOf("1", "2", "3"),
-        listOf("4", "5", "6"),
-        listOf("7", "8", "9"),
-        listOf(".", "0", "00")
-    )
-
-    Column(
-        modifier = Modifier.fillMaxWidth(),
-        verticalArrangement = Arrangement.spacedBy(6.dp)
-    ) {
-        keys.forEach { row ->
-            Row(
-                modifier = Modifier.fillMaxWidth(),
-                horizontalArrangement = Arrangement.spacedBy(6.dp)
-            ) {
-                row.forEach { key ->
-                    KeypadButton(
-                        text = key,
-                        modifier = Modifier.weight(1f),
-                        onClick = { onNumberClick(key) }
-                    )
-                }
-            }
-        }
-    }
-}
-
-@Composable
-private fun KeypadButton(
-    text: String,
-    modifier: Modifier = Modifier,
-    onClick: () -> Unit
-) {
-    Box(
-        modifier = modifier
-            .height(66.dp)
-            .shadow(
-                elevation = 2.dp,
-                shape = RoundedCornerShape(8.dp),
-                clip = false
-            )
-            .background(
-                color = Color.White,
-                shape = RoundedCornerShape(8.dp)
-            )
-            .clickable { onClick() },
-        contentAlignment = Alignment.Center
-    ) {
-        Text(
-            text = text,
-            color = Color.LegacyRed,
-            fontSize = 24.sp,
-            fontWeight = FontWeight.Normal,
-            textAlign = TextAlign.Center
-        )
-    }
 }

 private fun formatAmount(value: String): String {
--- a/app/src/main/java/com/mob/utsmyanmar/ui/components/NumericEntryScreen.kt
+++ b/app/src/main/java/com/mob/utsmyanmar/ui/components/NumericEntryScreen.kt
@ -0,0 +1,270 @@
+package com.mob.utsmyanmar.ui.components
+
+import androidx.compose.foundation.background
+import androidx.compose.foundation.clickable
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.navigationBarsPadding
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.statusBarsPadding
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.rounded.Backspace
+import androidx.compose.material.icons.rounded.KeyboardArrowLeft
+import androidx.compose.material3.Button
+import androidx.compose.material3.ButtonDefaults
+import androidx.compose.material3.Card
+import androidx.compose.material3.CardDefaults
+import androidx.compose.material3.Icon
+import androidx.compose.material3.IconButton
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.draw.shadow
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.text.style.TextAlign
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
+import com.mob.utsmyanmar.ui.theme.Color
+
+@Composable
+fun NumericEntryScreen(
+    title: String,
+    prompt: String,
+    displayValue: String,
+    supportingText: String,
+    confirmText: String,
+    onBackClick: () -> Unit,
+    onCancelClick: () -> Unit,
+    onConfirmClick: () -> Unit,
+    onKeyClick: (String) -> Unit,
+    onDeleteClick: () -> Unit,
+    modifier: Modifier = Modifier,
+    prefixLabel: String? = null,
+    errorMessage: String? = null,
+    confirmEnabled: Boolean = true,
+    canDelete: Boolean = true,
+    keys: List<List<String>> = listOf(
+        listOf("1", "2", "3"),
+        listOf("4", "5", "6"),
+        listOf("7", "8", "9"),
+        listOf(".", "0", "00")
+    )
+) {
+    Box(
+        modifier = modifier
+            .fillMaxSize()
+            .background(Color.IvoryBeige)
+            .navigationBarsPadding()
+            .statusBarsPadding()
+    ) {
+        Column(
+            modifier = Modifier
+                .fillMaxSize()
+                .padding(horizontal = 20.dp)
+        ) {
+            Box(
+                modifier = Modifier
+                    .fillMaxWidth()
+                    .height(56.dp),
+                contentAlignment = Alignment.Center
+            ) {
+                IconButton(
+                    onClick = onBackClick,
+                    modifier = Modifier.align(Alignment.CenterStart)
+                ) {
+                    Icon(
+                        imageVector = Icons.Rounded.KeyboardArrowLeft,
+                        contentDescription = "Back",
+                        tint = Color.LegacyRed
+                    )
+                }
+
+                Text(
+                    text = title,
+                    color = Color.LegacyRed,
+                    fontSize = 14.sp,
+                    fontWeight = FontWeight.Bold
+                )
+            }
+
+            Spacer(modifier = Modifier.height(36.dp))
+
+            Text(
+                text = prompt,
+                color = Color.Gray,
+                fontSize = 11.sp,
+                modifier = Modifier.align(Alignment.CenterHorizontally)
+            )
+
+            Spacer(modifier = Modifier.height(8.dp))
+
+            Row(
+                modifier = Modifier.align(Alignment.CenterHorizontally),
+                verticalAlignment = Alignment.Bottom
+            ) {
+                if (!prefixLabel.isNullOrBlank()) {
+                    Text(
+                        text = prefixLabel,
+                        color = Color.LegacyRed,
+                        fontSize = 13.sp,
+                        fontWeight = FontWeight.Medium,
+                        modifier = Modifier.padding(end = 10.dp, bottom = 6.dp)
+                    )
+                }
+
+                Text(
+                    text = displayValue,
+                    color = Color.LegacyRed,
+                    fontSize = 32.sp,
+                    fontWeight = FontWeight.Bold
+                )
+            }
+
+            Spacer(modifier = Modifier.height(12.dp))
+
+            Text(
+                text = supportingText,
+                color = if (errorMessage == null) Color.Gray else Color.Error,
+                fontSize = 11.sp,
+                modifier = Modifier.align(Alignment.CenterHorizontally)
+            )
+
+            Spacer(modifier = Modifier.height(28.dp))
+
+            NumericKeypad(
+                keys = keys,
+                onKeyClick = onKeyClick
+            )
+
+            Spacer(modifier = Modifier.weight(1f))
+
+            Row(
+                modifier = Modifier.fillMaxWidth(),
+                horizontalArrangement = Arrangement.spacedBy(12.dp)
+            ) {
+                Button(
+                    onClick = onCancelClick,
+                    modifier = Modifier
+                        .weight(1f)
+                        .height(56.dp),
+                    shape = RoundedCornerShape(8.dp),
+                    colors = ButtonDefaults.buttonColors(
+                        containerColor = Color.White,
+                        contentColor = Color.LegacyRed
+                    )
+                ) {
+                    Text("Cancel")
+                }
+
+                Button(
+                    onClick = onConfirmClick,
+                    modifier = Modifier
+                        .weight(1f)
+                        .height(56.dp),
+                    enabled = confirmEnabled,
+                    shape = RoundedCornerShape(8.dp),
+                    colors = ButtonDefaults.buttonColors(
+                        containerColor = Color.LegacyRed,
+                        contentColor = Color.White,
+                        disabledContainerColor = Color.LegacyRed.copy(alpha = 0.5f),
+                        disabledContentColor = Color.White
+                    )
+                ) {
+                    Text(
+                        text = confirmText,
+                        fontSize = 14.sp,
+                        fontWeight = FontWeight.Medium
+                    )
+                }
+            }
+
+            Spacer(modifier = Modifier.height(18.dp))
+        }
+
+        Card(
+            modifier = Modifier
+                .align(Alignment.TopEnd)
+                .padding(top = 110.dp, end = 20.dp)
+                .clickable(enabled = canDelete) {
+                    onDeleteClick()
+                },
+            shape = RoundedCornerShape(18.dp),
+            colors = CardDefaults.cardColors(containerColor = Color.White),
+            elevation = CardDefaults.cardElevation(defaultElevation = 6.dp)
+        ) {
+            Icon(
+                imageVector = Icons.Rounded.Backspace,
+                contentDescription = "Delete",
+                tint = if (canDelete) Color.LegacyRed else Color.Gray,
+                modifier = Modifier.padding(horizontal = 14.dp, vertical = 12.dp)
+            )
+        }
+    }
+}
+
+@Composable
+private fun NumericKeypad(
+    keys: List<List<String>>,
+    onKeyClick: (String) -> Unit
+) {
+    Column(
+        modifier = Modifier.fillMaxWidth(),
+        verticalArrangement = Arrangement.spacedBy(6.dp)
+    ) {
+        keys.forEach { row ->
+            Row(
+                modifier = Modifier.fillMaxWidth(),
+                horizontalArrangement = Arrangement.spacedBy(6.dp)
+            ) {
+                row.forEach { key ->
+                    KeypadButton(
+                        text = key,
+                        modifier = Modifier.weight(1f),
+                        onClick = { onKeyClick(key) }
+                    )
+                }
+            }
+        }
+    }
+}
+
+@Composable
+private fun KeypadButton(
+    text: String,
+    modifier: Modifier = Modifier,
+    onClick: () -> Unit
+) {
+    val enabled = text.isNotBlank()
+
+    Box(
+        modifier = modifier
+            .height(66.dp)
+            .shadow(
+                elevation = 2.dp,
+                shape = RoundedCornerShape(8.dp),
+                clip = false
+            )
+            .background(
+                color = Color.White,
+                shape = RoundedCornerShape(8.dp)
+            )
+            .clickable(enabled = enabled) { onClick() },
+        contentAlignment = Alignment.Center
+    ) {
+        Text(
+            text = text,
+            color = if (enabled) Color.LegacyRed else Color.White,
+            fontSize = 24.sp,
+            fontWeight = FontWeight.Normal,
+            textAlign = TextAlign.Center
+        )
+    }
+}
--- a/app/src/main/java/com/mob/utsmyanmar/ui/navigation/AppNavGraph.kt
+++ b/app/src/main/java/com/mob/utsmyanmar/ui/navigation/AppNavGraph.kt
@ -20,6 +20,7 @@ import com.mob.utsmyanmar.ui.pinpad.PinPadRoute
 import com.mob.utsmyanmar.ui.processing_card.ProcessingCardRoute
 import com.mob.utsmyanmar.ui.processing_card.ProcessingCardViewModel
 import com.mob.utsmyanmar.ui.print_receipt.PrintReceiptScreen
+import com.mob.utsmyanmar.ui.refund_rrn.InputRrnRoute
 import com.mob.utsmyanmar.ui.sign_on.SignOnResultScreen
 import com.mob.utsmyanmar.ui.sign_on.SignOnRoute
 import com.mob.utsmyanmar.ui.sending_to_host.SendingToHostRoute
@ -306,6 +307,14 @@ fun AppNavGraph(
                pinPadViewModel = pinPadViewModel,
                sharedViewModel = sharedViewModel,
                transProcessViewModel = transProcessViewModel,
+                onNavigateInputRrn = {
+                    navController.navigate(Routes.InputRrn.route) {
+                        popUpTo(Routes.PinPad.route) {
+                            inclusive = true
+                        }
+                        launchSingleTop = true
+                    }
+                },
                onNavigateSendingToHost = {
                    navController.navigate(Routes.SendingToHost.route) {
                        popUpTo(Routes.PinPad.route) {
@ -318,6 +327,23 @@ fun AppNavGraph(
            )
        }

+        composable(Routes.InputRrn.route) {
+            val sharedViewModel: SharedViewModel = hiltViewModel(activity)
+
+            InputRrnRoute(
+                sharedViewModel = sharedViewModel,
+                onBack = { navController.popBackStack() },
+                onNavigateSendingToHost = {
+                    navController.navigate(Routes.SendingToHost.route) {
+                        popUpTo(Routes.InputRrn.route) {
+                            inclusive = true
+                        }
+                        launchSingleTop = true
+                    }
+                }
+            )
+        }
+
        composable(Routes.SendingToHost.route) {
            val sharedViewModel: SharedViewModel = hiltViewModel(activity)

--- a/app/src/main/java/com/mob/utsmyanmar/ui/navigation/Routes.kt
+++ b/app/src/main/java/com/mob/utsmyanmar/ui/navigation/Routes.kt
@ -22,6 +22,7 @@ sealed class Routes(val route: String) {
    data object CardWaiting : Routes("card_waiting")
    data object ProcessingCard : Routes("processing_card")
    data object PinPad : Routes("pin_pad")
+    data object InputRrn : Routes("input_rrn")
    data object SendingToHost : Routes("sending_to_host")
    data object TransactionResult : Routes("transaction_result")
    data object PrintReceipt : Routes("print_receipt")
--- a/app/src/main/java/com/mob/utsmyanmar/ui/pinpad/PinPadRoute.kt
+++ b/app/src/main/java/com/mob/utsmyanmar/ui/pinpad/PinPadRoute.kt
@ -17,6 +17,7 @@ fun PinPadRoute(
    pinPadViewModel: PinPadViewModel,
    sharedViewModel: SharedViewModel,
    transProcessViewModel: TransProcessViewModel,
+    onNavigateInputRrn: () -> Unit,
    onNavigateSendingToHost: () -> Unit,
    onBack: () -> Unit
 ) {
@ -37,8 +38,12 @@ fun PinPadRoute(
                payDetail?.tradeAnswerCode = Constant.ANSWER_CODE_APPROVED
                sharedViewModel.payDetail.value = payDetail
                transProcessViewModel.resetTransactionStatus()
+                if (sharedViewModel.transactionsType.value == TransactionsType.REFUND) {
+                    onNavigateInputRrn()
+                } else {
                    onNavigateSendingToHost()
                }
+            }

            PinPadStatus.ON_CANCEL,
            PinPadStatus.ON_TIMEOUT,
--- a/app/src/main/java/com/mob/utsmyanmar/ui/processing_card/ProcessingCardViewModel.kt
+++ b/app/src/main/java/com/mob/utsmyanmar/ui/processing_card/ProcessingCardViewModel.kt
@ -127,15 +127,6 @@ class ProcessingCardViewModel(
                            )
                            return
                        }
-
-                        sharedViewModel.transactionsType.value == TransactionsType.REFUND -> {
-                            sendUiEvent(
-                                ProcessingCardUiEvent.NavigateToError(
-                                    "Card not supported"
-                                )
-                            )
-                            return
-                        }
                    }

                    sharedViewModel.setCardDataExist(true)
@ -207,15 +198,6 @@ class ProcessingCardViewModel(
                            )
                            return
                        }
-
-                        sharedViewModel.transactionsType.value == TransactionsType.REFUND -> {
-                            sendUiEvent(
-                                ProcessingCardUiEvent.NavigateToError(
-                                    "Card not supported"
-                                )
-                            )
-                            return
-                        }
                    }

                    sharedViewModel.setCardDataExist(true)
--- a/app/src/main/java/com/mob/utsmyanmar/ui/refund_rrn/InputRrnRoute.kt
+++ b/app/src/main/java/com/mob/utsmyanmar/ui/refund_rrn/InputRrnRoute.kt
@ -0,0 +1,77 @@
+package com.mob.utsmyanmar.ui.refund_rrn
+
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.saveable.rememberSaveable
+import androidx.compose.runtime.setValue
+import com.mob.utsmyanmar.ui.components.NumericEntryScreen
+import com.mob.utsmyanmar.viewmodel.SharedViewModel
+import com.utsmyanmar.paylibs.utils.POSUtil
+
+private const val RRN_MAX_LENGTH = 12
+
+@Composable
+fun InputRrnRoute(
+    sharedViewModel: SharedViewModel,
+    onBack: () -> Unit,
+    onNavigateSendingToHost: () -> Unit
+) {
+    var rrn by rememberSaveable {
+        mutableStateOf(sharedViewModel.rrNNo.value.orEmpty())
+    }
+    var errorMessage by rememberSaveable { mutableStateOf<String?>(null) }
+
+    NumericEntryScreen(
+        title = "Input RRN",
+        prompt = "Enter RRN",
+        displayValue = rrn.ifEmpty { "0" },
+        supportingText = errorMessage ?: "Enter the retrieval reference number to continue",
+        confirmText = "Next",
+        onBackClick = onBack,
+        onCancelClick = onBack,
+        onConfirmClick = {
+            val trimmedRrn = rrn.trim()
+            if (POSUtil.getInstance().checkNumberField(trimmedRrn)) {
+                errorMessage = "Invalid RRN"
+                return@NumericEntryScreen
+            }
+
+            sharedViewModel.rrNNo.value = trimmedRrn
+            sharedViewModel.payDetail.value?.let { payDetail ->
+                payDetail.referNo = trimmedRrn
+                sharedViewModel.payDetail.value = payDetail
+            }
+            onNavigateSendingToHost()
+        },
+        onKeyClick = { value ->
+            rrn = appendRrnValue(rrn, value)
+            errorMessage = null
+        },
+        onDeleteClick = {
+            rrn = rrn.dropLast(1)
+            errorMessage = null
+        },
+        confirmEnabled = rrn.isNotEmpty(),
+        canDelete = rrn.isNotEmpty(),
+        keys = listOf(
+            listOf("1", "2", "3"),
+            listOf("4", "5", "6"),
+            listOf("7", "8", "9"),
+            listOf("", "0", "00")
+        )
+    )
+}
+
+private fun appendRrnValue(current: String, value: String): String {
+    if (value.isBlank()) {
+        return current
+    }
+
+    val remainingDigits = RRN_MAX_LENGTH - current.length
+    if (remainingDigits <= 0) {
+        return current
+    }
+
+    return current + value.take(remainingDigits)
+}
--- a/app/src/main/java/com/mob/utsmyanmar/viewmodel/SharedViewModel.kt
+++ b/app/src/main/java/com/mob/utsmyanmar/viewmodel/SharedViewModel.kt
@ -451,6 +451,7 @@ class SharedViewModel @Inject constructor(
        when (transactionsType.value) {
            TransactionsType.SETTLEMENT -> saveMockSettlementForTesting()
            TransactionsType.VOID -> saveMockApprovedVoidForTesting()
+            TransactionsType.REFUND -> saveMockApprovedRefundForTesting()
            else -> saveMockApprovedSaleForVoidTesting()
        }
    }
@ -558,6 +559,42 @@ class SharedViewModel @Inject constructor(
        approvalCode.value = mockApprovalCode
    }

+    fun saveMockApprovedRefundForTesting() {
+        val refundDetail = payDetail.value ?: return
+
+        val systemParams = SystemParamsOperation.getInstance()
+        val mockTraceNo = systemParams.incrementSerialNum
+        val mockInvoiceNo = systemParams.incrementInvoiceNum
+        val mockApprovalCode = mockTraceNo.takeLast(6).padStart(6, '0')
+        val refundRrn = rrNNo.value?.trim().orEmpty()
+
+        refundDetail.voucherNo = mockTraceNo
+        refundDetail.invoiceNo = mockInvoiceNo
+        refundDetail.referNo = refundRrn
+        refundDetail.approvalCode = mockApprovalCode
+        refundDetail.authNo = mockApprovalCode
+        refundDetail.tradeAnswerCode = "00"
+        refundDetail.tradeResultDes = "MOCK REFUND APPROVED"
+        refundDetail.transactionType = TransactionType.REFUND
+        refundDetail.transType = TransactionsType.REFUND.name
+        refundDetail.isCanceled = false
+        refundDetail.isSettle = false
+        refundDetail.isNeedReversal = false
+        refundDetail.isReturnGood = false
+        refundDetail.TradeDate = SystemDateTime.getMMDD()
+        refundDetail.TradeTime = SystemDateTime.getHHmmss()
+        refundDetail.tradeDateAndTime = SystemDateTime.getMMDDhhmmss()
+        refundDetail.tradeDateTime = SystemDateTime.getYYMMDDhhmmss()
+        refundDetail.transDate = SystemDateTime.getTodayDateFormat()
+        refundDetail.transTime = SystemDateTime.getTodayTimeFormat()
+
+        repository.insertPayDetail(refundDetail)
+        payDetail.value = refundDetail
+        traceNo.value = mockTraceNo
+        rrNNo.value = refundRrn
+        approvalCode.value = mockApprovalCode
+    }
+
    fun saveMockSettlementForTesting() {
        val systemParams = SystemParamsOperation.getInstance()
        val mockTraceNo = systemParams.incrementSerialNum