(android) Add manual payments import/export (#685)

The user can now manually export the payments database to a public folder
of the device. The file is zipped and encrypted with ChaCha20Poly1305 using
the cloudkey already used by iOS.

When restoring a wallet, the user can also pick a payments backup file after
typing down the seed. This is optional.

Author: dpad85

phoenix-android/src/main/kotlin/fr/acinq/phoenix/android/AppView.kt

@@ -70,12 +70,12 @@ import fr.acinq.phoenix.android.components.dialogs.Dialog
 import fr.acinq.phoenix.android.components.openLink
 import fr.acinq.phoenix.android.components.screenlock.LockPrompt
 import fr.acinq.phoenix.android.home.HomeView
-import fr.acinq.phoenix.android.init.CreateWalletView
-import fr.acinq.phoenix.android.init.InitWallet
-import fr.acinq.phoenix.android.init.RestoreWalletView
+import fr.acinq.phoenix.android.initwallet.create.CreateWalletView
+import fr.acinq.phoenix.android.initwallet.InitWallet
+import fr.acinq.phoenix.android.initwallet.restore.RestoreWalletView
 import fr.acinq.phoenix.android.intro.IntroView
 import fr.acinq.phoenix.android.payments.details.PaymentDetailsView
-import fr.acinq.phoenix.android.payments.history.CsvExportView
+import fr.acinq.phoenix.android.payments.history.PaymentsExportView
 import fr.acinq.phoenix.android.payments.history.PaymentsHistoryView
 import fr.acinq.phoenix.android.payments.send.liquidity.RequestLiquidityView
 import fr.acinq.phoenix.android.payments.receive.ReceiveView
@@ -223,7 +223,7 @@ fun AppView(
                         CreateWalletView(onSeedWritten = { navController.navigate(Screen.Startup.route) })
                     }
                     composable(Screen.RestoreWallet.route) {
-                        RestoreWalletView(onSeedWritten = { navController.navigate(Screen.Startup.route) })
+                        RestoreWalletView(onRestoreDone = { navController.navigate(Screen.Startup.route) })
                     }
                     composable(Screen.Home.route) {
                         RequireStarted(walletState) {
@@ -337,11 +337,11 @@ fun AppView(
                             onBackClick = { navController.popBackStack() },
                             paymentsViewModel = paymentsViewModel,
                             onPaymentClick = { navigateToPaymentDetails(navController, id = it, isFromEvent = false) },
-                            onCsvExportClick = { navController.navigate(Screen.PaymentsCsvExport.route) },
+                            onCsvExportClick = { navController.navigate(Screen.PaymentsExport.route) },
                         )
                     }
-                    composable(Screen.PaymentsCsvExport.route) {
-                        CsvExportView(onBackClick = {
+                    composable(Screen.PaymentsExport.route) {
+                        PaymentsExportView(onBackClick = {
                             navController.navigate(Screen.PaymentsHistory.route) {
                                 popUpTo(Screen.PaymentsHistory.route) { inclusive = true }
                             }

phoenix-android/src/main/kotlin/fr/acinq/phoenix/android/Navigation.kt

@@ -29,7 +29,7 @@ sealed class Screen(val route: String) {
     data object Send : Screen("send")
     data object PaymentDetails : Screen("payments")
     data object PaymentsHistory : Screen("payments/all")
-    data object PaymentsCsvExport : Screen("payments/export")
+    data object PaymentsExport : Screen("payments/export")
 
     // -- settings
     data object Settings : Screen("settings")

phoenix-android/src/main/kotlin/fr/acinq/phoenix/android/components/Buttons.kt

@@ -51,6 +51,7 @@ import fr.acinq.bitcoin.TxId
 import fr.acinq.phoenix.android.R
 import fr.acinq.phoenix.android.business
 import fr.acinq.phoenix.android.utils.copyToClipboard
+import fr.acinq.phoenix.android.utils.mutedBgColor
 import fr.acinq.phoenix.utils.BlockchainExplorer
 
 
@@ -126,6 +127,28 @@ fun FilledButton(
     )
 }
 
+@Composable
+fun MutedFilledButton(
+    modifier: Modifier = Modifier,
+    text: String? = null,
+    icon: Int? = null,
+    maxLines: Int = Int.MAX_VALUE,
+    enabled: Boolean = true,
+    enabledEffect: Boolean = true,
+    space: Dp = 12.dp,
+    padding: PaddingValues = PaddingValues(12.dp),
+    onClick: () -> Unit,
+) {
+    FilledButton(
+        shape = RoundedCornerShape(12.dp),
+        backgroundColor = mutedBgColor,
+        textStyle = MaterialTheme.typography.button,
+        iconTint = MaterialTheme.colors.onSurface,
+        modifier = modifier, text = text, icon = icon, maxLines = maxLines, enabled = enabled,
+        enabledEffect = enabledEffect, space = space, padding = padding, onClick = onClick,
+    )
+}
+
 /** Button that looks like an inline link, should fit in with regular text views. */
 @Composable
 fun InlineButton(

phoenix-android/src/main/kotlin/fr/acinq/phoenix/android/components/feedback/SuccessMessage.kt

@@ -16,9 +16,11 @@
 
 package fr.acinq.phoenix.android.components.feedback
 
+import androidx.compose.foundation.layout.PaddingValues
 import androidx.compose.runtime.Composable
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
+import androidx.compose.ui.unit.dp
 import fr.acinq.phoenix.android.R
 import fr.acinq.phoenix.android.utils.positiveColor
 
@@ -28,6 +30,7 @@ fun SuccessMessage(
     modifier: Modifier = Modifier,
     details: String? = null,
     alignment: Alignment.Horizontal = Alignment.Start,
+    padding: PaddingValues = PaddingValues(16.dp),
 ) {
     FeedbackMessage(
         header = header,
@@ -36,5 +39,6 @@ fun SuccessMessage(
         iconColor = positiveColor,
         modifier = modifier,
         alignment = alignment,
+        padding = padding
     )
 }

phoenix-android/src/main/kotlin/fr/acinq/phoenix/android/home/HomePayments.kt

@@ -33,10 +33,9 @@ import fr.acinq.lightning.utils.UUID
 import fr.acinq.phoenix.android.PaymentsViewModel
 import fr.acinq.phoenix.android.R
 import fr.acinq.phoenix.android.components.FilledButton
-import fr.acinq.phoenix.android.payments.history.PaymentLine
+import fr.acinq.phoenix.android.payments.details.PaymentLine
 import fr.acinq.phoenix.android.utils.datastore.HomeAmountDisplayMode
 import fr.acinq.phoenix.data.WalletPaymentInfo
-import fr.acinq.phoenix.managers.WalletBalance
 
 
 @Composable