1 files changed, 92 insertions, 7 deletions

diff --git a/wallee-c2ec/app/src/main/java/ch/bfh/habej2/wallee_c2ec/PaymentActivity.kt b/wallee-c2ec/app/src/main/java/ch/bfh/habej2/wallee_c2ec/PaymentActivity.kt
index b3bbc5e..e63552b 100644
--- a/wallee-c2ec/app/src/main/java/ch/bfh/habej2/wallee_c2ec/PaymentActivity.kt
+++ b/wallee-c2ec/app/src/main/java/ch/bfh/habej2/wallee_c2ec/PaymentActivity.kt
@@ -1,21 +1,39 @@
 package ch.bfh.habej2.wallee_c2ec
 
 import android.os.Bundle
-import androidx.activity.ComponentActivity
 import androidx.activity.compose.setContent
+import androidx.appcompat.app.AppCompatActivity
 import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.material3.Button
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.Surface
 import androidx.compose.material3.Text
+import androidx.compose.material3.TextField
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
+import ch.bfh.habej2.wallee_c2ec.client.taler.BankIntegrationClient
+import ch.bfh.habej2.wallee_c2ec.client.wallee.WalleeResponseHandler
+import ch.bfh.habej2.wallee_c2ec.config.TalerBankIntegrationConfig
 import ch.bfh.habej2.wallee_c2ec.ui.theme.Walleec2ecTheme
+import com.wallee.android.till.sdk.ApiClient
+import com.wallee.android.till.sdk.data.LineItem
+import com.wallee.android.till.sdk.data.Transaction
+import com.wallee.android.till.sdk.data.TransactionProcessingBehavior
+import java.math.BigDecimal
+import java.util.Currency
+import java.util.Optional
 
-class PaymentActivity : ComponentActivity() {
+class PaymentActivity : AppCompatActivity() {
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
+
+        // TODO retrieve WithdrawalViewModel here
+        //  maybe something like savedStateRegistry.getSavedStateProvider("current-withdrawal")
+        val model = WithdrawalViewModel(BankIntegrationClient(
+            TalerBankIntegrationConfig("TestExchange", "http://localhost:8082/c2ec", "Wallee-1", "secret")))
+        val client = ApiClient(WalleeResponseHandler())
+
         setContent {
             Walleec2ecTheme {
                 // A surface container using the 'background' color from the theme
@@ -23,20 +41,87 @@ class PaymentActivity : ComponentActivity() {
                     modifier = Modifier.fillMaxSize(),
                     color = MaterialTheme.colorScheme.background
                 ) {
-                    // TODO use wallee sdk here for payment.
                     Column(
                         horizontalAlignment = Alignment.CenterHorizontally
                     ) {
 
                         Text(text = "present card, trigger payment")
-                        
-                        Button(onClick = { finish() }) {
-                            // TODO: abort payment here
-                            Text(text = "back")
+
+                        TextField(
+                            value = "",
+                            onValueChange = {
+                                val optAmount = parseAmount(it)
+                                if (optAmount.isPresent) {
+                                    model.updateAmount(optAmount.get())
+                                }
+                            },
+                            label = { Text(text = "Enter amount") },
+                            placeholder = { Text(text = "amount") }
+                        )
+
+                        Button(enabled = false, onClick = {
+                            val withdrawalAmount = LineItem
+                                .ListBuilder(
+                                    model.uiState.encodedWopid,
+                                    BigDecimal("${model.uiState.amount.value}.${model.uiState.amount.frac}")
+                                )
+                                .build()
+
+                            val transaction = Transaction.Builder(withdrawalAmount)
+                                .setCurrency(Currency.getInstance(model.uiState.currency))
+                                .setInvoiceReference(model.uiState.encodedWopid)
+                                .setMerchantReference(model.uiState.encodedWopid)
+                                .setTransactionProcessingBehavior(TransactionProcessingBehavior.COMPLETE_IMMEDIATELY)
+                                .build()
+
+                            try {
+                                client.authorizeTransaction(transaction)
+                            } catch (e: Exception) {
+                                e.printStackTrace()
+                            }
+                        }) {
+                            Text(text = "")
+                        }
+
+                        Button(onClick = {
+                            model.withdrawalOperationFailed(applicationContext)
+                            finish()
+                        }) {
+                            Text(text = "abort")
                         }
                     }
                 }
             }
         }
     }
+
+    /**
+     * Format expected X[.X], X an integer
+     */
+    private fun parseAmount(inp: String): Optional<Amount> {
+
+        val points = inp.count { it == '.' }
+        if (points > 1) {
+            return Optional.empty()
+        }
+
+        if (points == 1) {
+            val valueStr = inp.split(".")[0]
+            val fracStr = inp.split(".")[1]
+            return try {
+                val value = valueStr.toInt()
+                val frac = fracStr.toInt()
+                Optional.of(Amount(value, frac))
+            } catch (ex: NumberFormatException) {
+                Optional.empty()
+            }
+        }
+
+        return try {
+            val value = inp.toInt()
+            Optional.of(Amount(value, 0))
+        } catch (ex: NumberFormatException) {
+            Optional.empty()
+        }
+    }
 }