WIP: Re-write EditTransaction screen

app/src/main/java/com/ivy/wallet/ui/transaction/TransactionScreen.kt

@@ -0,0 +1,39 @@
+package com.ivy.wallet.ui.transaction
+
+import androidx.compose.foundation.layout.BoxWithConstraintsScope
+import androidx.compose.runtime.Composable
+import com.ivy.frp.view.navigation.Screen
+import com.ivy.wallet.domain.data.TransactionType
+import com.ivy.wallet.domain.data.core.Transaction
+import com.ivy.wallet.ui.architecture.FRP
+
+sealed class TransactionScreen : Screen {
+    data class NewTransaction(
+        val type: TransactionType
+    ) : TransactionScreen()
+
+    data class EditTransaction(
+        val transaction: Transaction
+    ) : TransactionScreen()
+}
+
+@Composable
+fun BoxWithConstraintsScope.TransactionScreen(screen: TransactionScreen) {
+    FRP<TrnState, TrnEvent, TransactionViewModel>(
+        initialEvent = when (screen) {
+            is TransactionScreen.EditTransaction -> TrnEvent.LoadTransaction(screen.transaction)
+            is TransactionScreen.NewTransaction -> TrnEvent.NewTransaction(screen.type)
+        }
+    ) { state, onEvent ->
+        UI(state = state, onEvent = onEvent)
+    }
+}
+
+@Composable
+private fun UI(
+    state: TrnState,
+
+    onEvent: (TrnEvent) -> Unit
+) {
+
+}

app/src/main/java/com/ivy/wallet/ui/transaction/TransactionViewModel.kt

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+package com.ivy.wallet.ui.transaction
+
+import com.ivy.frp.viewmodel.FRPViewModel
+import dagger.hilt.android.lifecycle.HiltViewModel
+import kotlinx.coroutines.flow.MutableStateFlow
+import javax.inject.Inject
+
+@HiltViewModel
+class TransactionViewModel @Inject constructor(
+
+) : FRPViewModel<TrnState, TrnEvent>() {
+    override val _state: MutableStateFlow<TrnState> = MutableStateFlow(TrnState.Initial)
+
+    override suspend fun handleEvent(event: TrnEvent): suspend () -> TrnState {
+        TODO("Not yet implemented")
+    }
+
+}

app/src/main/java/com/ivy/wallet/ui/transaction/TrnEvent.kt

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+package com.ivy.wallet.ui.transaction
+
+import com.ivy.wallet.domain.data.TransactionType
+import com.ivy.wallet.domain.data.core.Transaction
+
+sealed class TrnEvent {
+    data class NewTransaction(
+        val type: TransactionType
+    ) : TrnEvent()
+
+    data class LoadTransaction(
+        val transaction: Transaction
+    ) : TrnEvent()
+}

app/src/main/java/com/ivy/wallet/ui/transaction/TrnState.kt

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+package com.ivy.wallet.ui.transaction
+
+import com.ivy.wallet.domain.data.TransactionType
+import com.ivy.wallet.domain.data.core.Account
+import com.ivy.wallet.domain.data.core.Category
+import com.ivy.wallet.domain.data.core.Transaction
+import java.math.BigDecimal
+import java.time.LocalDateTime
+
+sealed class TrnState {
+    object Initial : TrnState()
+
+    data class NewTransaction(
+        val type: TransactionType,
+        val account: Account,
+        val toAccount: Account?,
+        val amount: BigDecimal,
+        val category: Category?,
+        val dateTime: LocalDateTime,
+        val title: String?,
+        val description: String?
+    ) : TrnState()
+
+    data class EditTransaction(
+        val transaction: Transaction
+    ) : TrnState()
+}