Refining the Payment via Intent

app/src/main/java/com/vitorpamplona/amethyst/service/ZapPaymentHandler.kt

@@ -0,0 +1,207 @@
+package com.vitorpamplona.amethyst.service
+
+import android.content.Context
+import androidx.compose.runtime.Immutable
+import com.vitorpamplona.amethyst.R
+import com.vitorpamplona.amethyst.model.Account
+import com.vitorpamplona.amethyst.model.LocalCache
+import com.vitorpamplona.amethyst.model.Note
+import com.vitorpamplona.amethyst.model.User
+import com.vitorpamplona.amethyst.service.lnurl.LightningAddressResolver
+import com.vitorpamplona.quartz.events.LnZapEvent
+import com.vitorpamplona.quartz.events.PayInvoiceErrorResponse
+import com.vitorpamplona.quartz.events.ZapSplitSetup
+import kotlinx.collections.immutable.ImmutableList
+import kotlinx.collections.immutable.toImmutableList
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.delay
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.withContext
+import kotlin.math.round
+
+class ZapPaymentHandler(val account: Account) {
+
+    @Immutable
+    data class Payable(
+        val info: ZapSplitSetup,
+        val user: User?,
+        val amountMilliSats: Long,
+        val invoice: String
+    )
+
+    suspend fun zap(
+        note: Note,
+        amountMilliSats: Long,
+        pollOption: Int?,
+        message: String,
+        context: Context,
+        onError: (String) -> Unit,
+        onProgress: (percent: Float) -> Unit,
+        onPayViaIntent: (ImmutableList<Payable>) -> Unit,
+        zapType: LnZapEvent.ZapType
+    ) = withContext(Dispatchers.IO) {
+        val zapSplitSetup = note.event?.zapSplitSetup()
+
+        val zapsToSend = if (!zapSplitSetup.isNullOrEmpty()) {
+            zapSplitSetup
+        } else {
+            val lud16 = note.author?.info?.lud16?.trim() ?: note.author?.info?.lud06?.trim()
+
+            if (lud16.isNullOrBlank()) {
+                onError(context.getString(R.string.user_does_not_have_a_lightning_address_setup_to_receive_sats))
+                return@withContext
+            }
+
+            listOf(ZapSplitSetup(lud16, null, weight = 1.0, true))
+        }
+
+        val totalWeight = zapsToSend.sumOf { it.weight }
+
+        val invoicesToPayOnIntent = mutableListOf<Payable>()
+
+        zapsToSend.forEachIndexed { index, value ->
+            val outerProgressMin = index / zapsToSend.size.toFloat()
+            val outerProgressMax = (index + 1) / zapsToSend.size.toFloat()
+
+            val zapValue =
+                round((amountMilliSats * value.weight / totalWeight) / 1000f).toLong() * 1000
+
+            if (value.isLnAddress) {
+                innerZap(
+                    lud16 = value.lnAddressOrPubKeyHex,
+                    note = note,
+                    amount = zapValue,
+                    pollOption = pollOption,
+                    message = message,
+                    context = context,
+                    onError = onError,
+                    onProgress = {
+                        onProgress((it * (outerProgressMax - outerProgressMin)) + outerProgressMin)
+                    },
+                    zapType = zapType,
+                    onPayInvoiceThroughIntent = {
+                        invoicesToPayOnIntent.add(
+                            Payable(
+                                info = value,
+                                user = null,
+                                amountMilliSats = zapValue,
+                                invoice = it
+                            )
+                        )
+                    }
+                )
+            } else {
+                val user = LocalCache.getUserIfExists(value.lnAddressOrPubKeyHex)
+                val lud16 = user?.info?.lnAddress()
+
+                if (lud16 != null) {
+                    innerZap(
+                        lud16 = lud16,
+                        note = note,
+                        amount = zapValue,
+                        pollOption = pollOption,
+                        message = message,
+                        context = context,
+                        onError = onError,
+                        onProgress = {
+                            onProgress((it * (outerProgressMax - outerProgressMin)) + outerProgressMin)
+                        },
+                        zapType = zapType,
+                        overrideUser = user,
+                        onPayInvoiceThroughIntent = {
+                            invoicesToPayOnIntent.add(
+                                Payable(
+                                    info = value,
+                                    user = user,
+                                    amountMilliSats = zapValue,
+                                    invoice = it
+                                )
+                            )
+                        }
+                    )
+                } else {
+                    onError(
+                        context.getString(
+                            R.string.user_x_does_not_have_a_lightning_address_setup_to_receive_sats,
+                            user?.toBestDisplayName() ?: value.lnAddressOrPubKeyHex
+                        )
+                    )
+                }
+            }
+        }
+
+        if (invoicesToPayOnIntent.isNotEmpty()) {
+            onPayViaIntent(invoicesToPayOnIntent.toImmutableList())
+            onProgress(1f)
+        } else {
+            launch(Dispatchers.IO) {
+                // Awaits for the event to come back to LocalCache.
+                delay(5000)
+                onProgress(1f)
+            }
+        }
+    }
+
+    private suspend fun innerZap(
+        lud16: String,
+        note: Note,
+        amount: Long,
+        pollOption: Int?,
+        message: String,
+        context: Context,
+        onError: (String) -> Unit,
+        onProgress: (percent: Float) -> Unit,
+        onPayInvoiceThroughIntent: (String) -> Unit,
+        zapType: LnZapEvent.ZapType,
+        overrideUser: User? = null
+    ) {
+        var zapRequestJson = ""
+
+        if (zapType != LnZapEvent.ZapType.NONZAP) {
+            val zapRequest = account.createZapRequestFor(note, pollOption, message, zapType, overrideUser)
+            if (zapRequest != null) {
+                zapRequestJson = zapRequest.toJson()
+            }
+        }
+
+        onProgress(0.10f)
+
+        LightningAddressResolver().lnAddressInvoice(
+            lud16,
+            amount,
+            message,
+            zapRequestJson,
+            onSuccess = {
+                onProgress(0.7f)
+                if (account.hasWalletConnectSetup()) {
+                    account.sendZapPaymentRequestFor(
+                        bolt11 = it,
+                        note,
+                        onResponse = { response ->
+                            if (response is PayInvoiceErrorResponse) {
+                                onProgress(0.0f)
+                                onError(
+                                    response.error?.message
+                                        ?: response.error?.code?.toString()
+                                        ?: "Error parsing error message"
+                                )
+                            } else {
+                                onProgress(1f)
+                            }
+                        }
+                    )
+                    onProgress(0.8f)
+                } else {
+                    try {
+                        onPayInvoiceThroughIntent(it)
+                    } catch (e: Exception) {
+                        onError(context.getString(R.string.lightning_wallets_not_found2))
+                    }
+                    onProgress(0f)
+                }
+            },
+            onError = onError,
+            onProgress = onProgress
+        )
+    }
+}

app/src/main/java/com/vitorpamplona/amethyst/ui/note/PollNote.kt

@@ -24,6 +24,7 @@ import androidx.compose.ui.window.Popup
 import androidx.lifecycle.viewmodel.compose.viewModel
 import com.vitorpamplona.amethyst.R
 import com.vitorpamplona.amethyst.model.Note
+import com.vitorpamplona.amethyst.service.ZapPaymentHandler
 import com.vitorpamplona.amethyst.ui.components.TranslatableRichTextViewer
 import com.vitorpamplona.amethyst.ui.screen.loggedIn.AccountViewModel
 import com.vitorpamplona.amethyst.ui.theme.BitcoinOrange
@@ -35,6 +36,8 @@ import com.vitorpamplona.amethyst.ui.theme.placeholderText
 import com.vitorpamplona.quartz.events.ImmutableListOfLists
 import com.vitorpamplona.quartz.events.LnZapEvent
 import com.vitorpamplona.quartz.events.toImmutableListOfLists
+import kotlinx.collections.immutable.ImmutableList
+import kotlinx.collections.immutable.persistentListOf
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
 import java.util.*
@@ -283,6 +286,12 @@ fun ZapVote(
     }
 
     var wantsToZap by remember { mutableStateOf(false) }
+    var wantsToPay by remember {
+        mutableStateOf<ImmutableList<ZapPaymentHandler.Payable>>(
+            persistentListOf()
+        )
+    }
+
     var zappingProgress by remember { mutableStateOf(0f) }
     var showErrorMessageDialog by remember { mutableStateOf<String?>(null) }
 
@@ -361,6 +370,9 @@ fun ZapVote(
                             scope.launch(Dispatchers.Main) {
                                 zappingProgress = it
                             }
+                        },
+                        onPayViaIntent = {
+
                         },
                         zapType = accountViewModel.account.defaultZapType
                     )
@@ -393,10 +405,19 @@ fun ZapVote(
                     scope.launch(Dispatchers.Main) {
                         zappingProgress = it
                     }
+                },
+                onPayViaIntent = {
+                    wantsToPay = it
                 }
             )
         }
 
+        if (wantsToPay.isNotEmpty()) {
+            PayViaIntentDialog(payingInvoices = wantsToPay, accountViewModel = accountViewModel) {
+                wantsToPay = persistentListOf()
+            }
+        }
+
         if (showErrorMessageDialog != null) {
             ErrorMessageDialog(
                 title = stringResource(id = R.string.error_dialog_zap_error),
@@ -463,7 +484,8 @@ fun FilteredZapAmountChoicePopup(
     onDismiss: () -> Unit,
     onChangeAmount: () -> Unit,
     onError: (text: String) -> Unit,
-    onProgress: (percent: Float) -> Unit
+    onProgress: (percent: Float) -> Unit,
+    onPayViaIntent: (ImmutableList<ZapPaymentHandler.Payable>) -> Unit
 ) {
     val context = LocalContext.current
 
@@ -502,6 +524,7 @@ fun FilteredZapAmountChoicePopup(
                             context,
                             onError,
                             onProgress,
+                            onPayViaIntent,
                             defaultZapType
                         )
                         onDismiss()
@@ -526,6 +549,7 @@ fun FilteredZapAmountChoicePopup(
                                     context,
                                     onError,
                                     onProgress,
+                                    onPayViaIntent,
                                     defaultZapType
                                 )
                                 onDismiss()

app/src/main/java/com/vitorpamplona/amethyst/ui/note/ReactionsRow.kt

@@ -78,6 +78,7 @@ import coil.request.CachePolicy
 import coil.request.ImageRequest
 import com.vitorpamplona.amethyst.R
 import com.vitorpamplona.amethyst.model.Note
+import com.vitorpamplona.amethyst.service.ZapPaymentHandler
 import com.vitorpamplona.amethyst.ui.actions.NewPostView
 import com.vitorpamplona.amethyst.ui.components.ImageUrlType
 import com.vitorpamplona.amethyst.ui.components.InLineIconRenderer
@@ -107,8 +108,11 @@ import com.vitorpamplona.amethyst.ui.theme.TinyBorders
 import com.vitorpamplona.amethyst.ui.theme.mediumImportanceLink
 import com.vitorpamplona.amethyst.ui.theme.placeholderText
 import com.vitorpamplona.amethyst.ui.theme.placeholderTextColorFilter
+import kotlinx.collections.immutable.ImmutableList
+import kotlinx.collections.immutable.persistentListOf
 import kotlinx.collections.immutable.toImmutableList
 import kotlinx.collections.immutable.toImmutableMap
+import kotlinx.collections.immutable.toPersistentList
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
@@ -907,6 +911,11 @@ fun ZapReaction(
     var wantsToChangeZapAmount by remember { mutableStateOf(false) }
     var wantsToSetCustomZap by remember { mutableStateOf(false) }
     var showErrorMessageDialog by remember { mutableStateOf<String?>(null) }
+    var wantsToPay by remember(baseNote) {
+        mutableStateOf<ImmutableList<ZapPaymentHandler.Payable>>(
+            persistentListOf()
+        )
+    }
 
     val context = LocalContext.current
     val scope = rememberCoroutineScope()
@@ -938,6 +947,9 @@ fun ZapReaction(
                                 zappingProgress = 0f
                                 showErrorMessageDialog = it
                             }
+                        },
+                        onPayViaIntent = {
+                            wantsToPay = it
                         }
                     )
                 },
@@ -971,6 +983,9 @@ fun ZapReaction(
                     scope.launch(Dispatchers.Main) {
                         zappingProgress = it
                     }
+                },
+                onPayViaIntent = {
+                    wantsToPay = it
                 }
             )
         }
@@ -981,7 +996,10 @@ fun ZapReaction(
                 textContent = showErrorMessageDialog ?: "",
                 onClickStartMessage = {
                     baseNote.author?.let {
-                        nav(routeToMessage(it, showErrorMessageDialog, accountViewModel))
+                        scope.launch(Dispatchers.IO) {
+                            val route = routeToMessage(it, showErrorMessageDialog, accountViewModel)
+                            nav(route)
+                        }
                     }
                 },
                 onDismiss = { showErrorMessageDialog = null }
@@ -995,6 +1013,12 @@ fun ZapReaction(
             )
         }
 
+        if (wantsToPay.isNotEmpty()) {
+            PayViaIntentDialog(payingInvoices = wantsToPay, accountViewModel = accountViewModel) {
+                wantsToPay = persistentListOf()
+            }
+        }
+
         if (wantsToSetCustomZap) {
             ZapCustomDialog(
                 onClose = { wantsToSetCustomZap = false },
@@ -1009,6 +1033,9 @@ fun ZapReaction(
                         zappingProgress = it
                     }
                 },
+                onPayViaIntent = {
+                    wantsToPay = it
+                },
                 accountViewModel = accountViewModel,
                 baseNote = baseNote
             )
@@ -1045,7 +1072,8 @@ private fun zapClick(
     context: Context,
     onZappingProgress: (Float) -> Unit,
     onMultipleChoices: () -> Unit,
-    onError: (String) -> Unit
+    onError: (String) -> Unit,
+    onPayViaIntent: (ImmutableList<ZapPaymentHandler.Payable>) -> Unit
 ) {
     if (accountViewModel.account.zapAmountChoices.isEmpty()) {
         scope.launch {
@@ -1080,7 +1108,8 @@ private fun zapClick(
                     onZappingProgress(it)
                 }
             },
-            zapType = accountViewModel.account.defaultZapType
+            zapType = accountViewModel.account.defaultZapType,
+            onPayViaIntent = onPayViaIntent
         )
     } else if (accountViewModel.account.zapAmountChoices.size > 1) {
         onMultipleChoices()
@@ -1391,7 +1420,8 @@ fun ZapAmountChoicePopup(
     onDismiss: () -> Unit,
     onChangeAmount: () -> Unit,
     onError: (text: String) -> Unit,
-    onProgress: (percent: Float) -> Unit
+    onProgress: (percent: Float) -> Unit,
+    onPayViaIntent: (ImmutableList<ZapPaymentHandler.Payable>) -> Unit
 ) {
     val context = LocalContext.current
 
@@ -1417,6 +1447,7 @@ fun ZapAmountChoicePopup(
                             context,
                             onError,
                             onProgress,
+                            onPayViaIntent,
                             account.defaultZapType
                         )
                         onDismiss()
@@ -1441,7 +1472,8 @@ fun ZapAmountChoicePopup(
                                     context,
                                     onError,
                                     onProgress,
-                                    account.defaultZapType
+                                    onPayViaIntent,
+                                    account.defaultZapType,
                                 )
                                 onDismiss()
                             },

app/src/main/java/com/vitorpamplona/amethyst/ui/note/ZapCustomDialog.kt

@@ -1,5 +1,7 @@
 package com.vitorpamplona.amethyst.ui.note
 
+import android.content.Intent
+import android.net.Uri
 import androidx.compose.foundation.layout.*
 import androidx.compose.foundation.text.KeyboardOptions
 import androidx.compose.material.*
@@ -10,25 +12,41 @@ import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.platform.LocalLifecycleOwner
 import androidx.compose.ui.res.painterResource
 import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.text.input.KeyboardCapitalization
 import androidx.compose.ui.text.input.KeyboardType
 import androidx.compose.ui.text.input.TextFieldValue
+import androidx.compose.ui.text.style.TextOverflow
 import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
 import androidx.compose.ui.window.Dialog
 import androidx.compose.ui.window.DialogProperties
+import androidx.core.content.ContextCompat
+import androidx.lifecycle.Lifecycle
+import androidx.lifecycle.LifecycleEventObserver
 import androidx.lifecycle.ViewModel
 import androidx.lifecycle.viewmodel.compose.viewModel
 import com.vitorpamplona.amethyst.R
 import com.vitorpamplona.amethyst.model.Account
 import com.vitorpamplona.amethyst.model.Note
+import com.vitorpamplona.amethyst.service.NostrHomeDataSource
+import com.vitorpamplona.amethyst.service.ZapPaymentHandler
 import com.vitorpamplona.amethyst.ui.actions.CloseButton
+import com.vitorpamplona.amethyst.ui.actions.PostButton
 import com.vitorpamplona.amethyst.ui.screen.loggedIn.AccountViewModel
 import com.vitorpamplona.amethyst.ui.screen.loggedIn.TextSpinner
 import com.vitorpamplona.amethyst.ui.theme.ButtonBorder
+import com.vitorpamplona.amethyst.ui.theme.DoubleHorzSpacer
+import com.vitorpamplona.amethyst.ui.theme.DoubleVertSpacer
+import com.vitorpamplona.amethyst.ui.theme.Size10dp
+import com.vitorpamplona.amethyst.ui.theme.Size55dp
+import com.vitorpamplona.amethyst.ui.theme.StdHorzSpacer
 import com.vitorpamplona.amethyst.ui.theme.placeholderText
 import com.vitorpamplona.quartz.events.LnZapEvent
+import kotlinx.collections.immutable.ImmutableList
 import kotlinx.collections.immutable.toImmutableList
 
 class ZapOptionstViewModel : ViewModel() {
@@ -62,6 +80,7 @@ fun ZapCustomDialog(
     onClose: () -> Unit,
     onError: (text: String) -> Unit,
     onProgress: (percent: Float) -> Unit,
+    onPayViaIntent: (ImmutableList<ZapPaymentHandler.Payable>) -> Unit,
     accountViewModel: AccountViewModel,
     baseNote: Note
 ) {
@@ -113,6 +132,7 @@ fun ZapCustomDialog(
                             context,
                             onError = onError,
                             onProgress = onProgress,
+                            onPayViaIntent = onPayViaIntent,
                             zapType = selectedZapType
                         )
                         onClose()
@@ -266,3 +286,115 @@ fun ErrorMessageDialog(
         }
     )
 }
+
+@Composable
+fun PayViaIntentDialog(
+    payingInvoices: ImmutableList<ZapPaymentHandler.Payable>,
+    accountViewModel: AccountViewModel,
+    onClose: () -> Unit,
+) {
+    val context = LocalContext.current
+
+    Dialog(
+        onDismissRequest = onClose,
+        properties = DialogProperties(
+            dismissOnClickOutside = false,
+            usePlatformDefaultWidth = false
+        )
+    ) {
+        Surface() {
+            Column(modifier = Modifier.padding(10.dp)) {
+                Row(
+                    horizontalArrangement = Arrangement.SpaceBetween,
+                    verticalAlignment = Alignment.CenterVertically
+                ) {
+                    CloseButton(onPress = onClose)
+                }
+                
+                Spacer(modifier = DoubleVertSpacer)
+
+                payingInvoices.forEachIndexed { index, it ->
+                    val paid = remember {
+                        mutableStateOf(false)
+                    }
+
+                    Row(verticalAlignment = Alignment.CenterVertically, modifier = Modifier.padding(vertical = Size10dp)) {
+                        if (it.user != null) {
+                            BaseUserPicture(it.user, Size55dp, accountViewModel = accountViewModel)
+                        } else  {
+                            DisplayBlankAuthor(size = Size55dp)
+                        }
+
+                        Spacer(modifier = DoubleHorzSpacer)
+
+                        Column(modifier = Modifier.weight(1f)) {
+                            if (it.user != null) {
+                                UsernameDisplay(it.user, showPlayButton = false)
+                            } else {
+                                Text(
+                                    text = stringResource(id = R.string.wallet_number, index+1),
+                                    maxLines = 1,
+                                    overflow = TextOverflow.Ellipsis,
+                                    fontWeight = FontWeight.Bold,
+                                    fontSize = 18.sp
+                                )
+                            }
+                            Row() {
+                                Text(
+                                    text = showAmount((it.amountMilliSats/1000.0f).toBigDecimal()),
+                                    maxLines = 1,
+                                    overflow = TextOverflow.Ellipsis,
+                                    fontWeight = FontWeight.Bold,
+                                    fontSize = 18.sp
+                                )
+                                Spacer(modifier = StdHorzSpacer)
+                                Text(
+                                    text = stringResource(id = R.string.sats),
+                                    maxLines = 1,
+                                    overflow = TextOverflow.Ellipsis,
+                                    fontWeight = FontWeight.Bold,
+                                    fontSize = 18.sp
+                                )
+                            }
+
+                        }
+
+                        Spacer(modifier = DoubleHorzSpacer)
+
+                        PayButton(isActive = !paid.value) {
+                            paid.value = true
+
+                            val uri = "lightning:" + it.invoice
+
+                            val intent = Intent(Intent.ACTION_VIEW, Uri.parse(uri))
+                            intent.flags = Intent.FLAG_ACTIVITY_NEW_TASK or Intent.FLAG_ACTIVITY_CLEAR_TASK
+
+                            ContextCompat.startActivity(context, intent, null)
+                        }
+                    }
+                }
+            }
+        }
+    }
+}
+
+@Composable
+fun PayButton(isActive: Boolean, modifier: Modifier = Modifier, onPost: () -> Unit = {}) {
+    Button(
+        modifier = modifier,
+        onClick = {
+            onPost()
+        },
+        shape = ButtonBorder,
+        colors = ButtonDefaults
+            .buttonColors(
+                backgroundColor = if (isActive) MaterialTheme.colors.primary else Color.Gray
+            ),
+        contentPadding = PaddingValues(0.dp)
+    ) {
+        if (isActive)
+            Text(text = stringResource(R.string.pay), color = Color.White)
+        else
+            Text(text = stringResource(R.string.paid), color = Color.White)
+    }
+}

app/src/main/java/com/vitorpamplona/amethyst/ui/screen/loggedIn/AccountViewModel.kt

@@ -27,6 +27,7 @@ import com.vitorpamplona.amethyst.service.Nip05Verifier
 import com.vitorpamplona.amethyst.service.Nip11CachedRetriever
 import com.vitorpamplona.amethyst.service.Nip11Retriever
 import com.vitorpamplona.amethyst.service.OnlineChecker
+import com.vitorpamplona.amethyst.service.ZapPaymentHandler
 import com.vitorpamplona.amethyst.service.lnurl.LightningAddressResolver
 import com.vitorpamplona.amethyst.ui.components.UrlPreviewState
 import com.vitorpamplona.amethyst.ui.note.ZapAmountCommentNotification
@@ -43,6 +44,7 @@ import com.vitorpamplona.quartz.events.SealedGossipEvent
 import com.vitorpamplona.quartz.events.UserMetadata
 import com.vitorpamplona.quartz.events.ZapSplitSetup
 import com.vitorpamplona.quartz.utils.TimeUtils
+import kotlinx.collections.immutable.ImmutableList
 import kotlinx.collections.immutable.ImmutableSet
 import kotlinx.collections.immutable.persistentSetOf
 import kotlinx.collections.immutable.toImmutableSet
@@ -215,111 +217,7 @@ class AccountViewModel(val account: Account) : ViewModel() {
         return null
     }
 
-    fun zap(note: Note, amount: Long, pollOption: Int?, message: String, context: Context, onError: (String) -> Unit, onProgress: (percent: Float) -> Unit, zapType: LnZapEvent.ZapType) {
-        viewModelScope.launch(Dispatchers.IO) {
-            innerZap(note, amount, pollOption, message, context, onError, onProgress, zapType)
-        }
-    }
-
-    private suspend fun innerZap(note: Note, amountMilliSats: Long, pollOption: Int?, message: String, context: Context, onError: (String) -> Unit, onProgress: (percent: Float) -> Unit, zapType: LnZapEvent.ZapType) {
-        val zapSplitSetup = note.event?.zapSplitSetup()
-
-        val zapsToSend = if (!zapSplitSetup.isNullOrEmpty()) {
-            zapSplitSetup
-        } else {
-            val lud16 = note.author?.info?.lud16?.trim() ?: note.author?.info?.lud06?.trim()
-
-            if (lud16.isNullOrBlank()) {
-                onError(context.getString(R.string.user_does_not_have_a_lightning_address_setup_to_receive_sats))
-                return
-            }
-
-            listOf(ZapSplitSetup(lud16, null, weight = 1.0, true))
-        }
-
-        val totalWeight = zapsToSend.sumOf { it.weight }
-
-        val invoicesToPayOnIntent = mutableListOf<String>()
-
-        zapsToSend.forEachIndexed { index, value ->
-            val outerProgressMin = index / zapsToSend.size.toFloat()
-            val outerProgressMax = (index + 1) / zapsToSend.size.toFloat()
-
-            val zapValue =
-                round((amountMilliSats * value.weight / totalWeight) / 1000f).toLong() * 1000
-
-            if (value.isLnAddress) {
-                innerZap(
-                    lud16 = value.lnAddressOrPubKeyHex,
-                    note = note,
-                    amount = zapValue,
-                    pollOption = pollOption,
-                    message = message,
-                    context = context,
-                    onError = onError,
-                    onProgress = {
-                        onProgress((it * (outerProgressMax - outerProgressMin)) + outerProgressMin)
-                    },
-                    zapType = zapType,
-                    onPayInvoiceThroughIntent = {
-                        invoicesToPayOnIntent.add(it)
-                    }
-                )
-            } else {
-                val user = LocalCache.getUserIfExists(value.lnAddressOrPubKeyHex)
-                val lud16 = user?.info?.lnAddress()
-
-                if (lud16 != null) {
-                    innerZap(
-                        lud16 = lud16,
-                        note = note,
-                        amount = zapValue,
-                        pollOption = pollOption,
-                        message = message,
-                        context = context,
-                        onError = onError,
-                        onProgress = {
-                            onProgress((it * (outerProgressMax - outerProgressMin)) + outerProgressMin)
-                        },
-                        zapType = zapType,
-                        overrideUser = user,
-                        onPayInvoiceThroughIntent = {
-                            invoicesToPayOnIntent.add(it)
-                        }
-                    )
-                } else {
-                    onError(
-                        context.getString(
-                            R.string.user_x_does_not_have_a_lightning_address_setup_to_receive_sats,
-                            user?.toBestDisplayName() ?: value.lnAddressOrPubKeyHex
-                        )
-                    )
-                }
-            }
-        }
-
-        if (invoicesToPayOnIntent.isNotEmpty()) {
-            payInvoices(bolt11s = invoicesToPayOnIntent, context = context)
-        }
-
-        // Awaits for the event to come back to LocalCache.
-        viewModelScope.launch(Dispatchers.IO) {
-            delay(5000)
-            onProgress(1f)
-        }
-    }
-
-    private suspend fun payInvoices(bolt11s: List<String>, context: Context) {
-        val uri = "lightning:" + bolt11s.joinToString("&")
-
-        val intent = Intent(Intent.ACTION_VIEW, Uri.parse(uri))
-        intent.flags = Intent.FLAG_ACTIVITY_NEW_TASK or Intent.FLAG_ACTIVITY_CLEAR_TASK
-
-        ContextCompat.startActivity(context, intent, null)
-    }
-
-    private suspend fun innerZap(
-        lud16: String,
+    fun zap(
         note: Note,
         amount: Long,
         pollOption: Int?,
@@ -327,58 +225,12 @@ class AccountViewModel(val account: Account) : ViewModel() {
         context: Context,
         onError: (String) -> Unit,
         onProgress: (percent: Float) -> Unit,
-        onPayInvoiceThroughIntent: (String) -> Unit,
-        zapType: LnZapEvent.ZapType,
-        overrideUser: User? = null
+        onPayViaIntent: (ImmutableList<ZapPaymentHandler.Payable>) -> Unit,
+        zapType: LnZapEvent.ZapType
     ) {
-        var zapRequestJson = ""
-
-        if (zapType != LnZapEvent.ZapType.NONZAP) {
-            val zapRequest = account.createZapRequestFor(note, pollOption, message, zapType, overrideUser)
-            if (zapRequest != null) {
-                zapRequestJson = zapRequest.toJson()
-            }
+        viewModelScope.launch(Dispatchers.IO) {
+            ZapPaymentHandler(account).zap(note, amount, pollOption, message, context, onError, onProgress, onPayViaIntent, zapType)
         }
-
-        onProgress(0.10f)
-
-        LightningAddressResolver().lnAddressInvoice(
-            lud16,
-            amount,
-            message,
-            zapRequestJson,
-            onSuccess = {
-                onProgress(0.7f)
-                if (account.hasWalletConnectSetup()) {
-                    account.sendZapPaymentRequestFor(
-                        bolt11 = it,
-                        note,
-                        onResponse = { response ->
-                            if (response is PayInvoiceErrorResponse) {
-                                onProgress(0.0f)
-                                onError(
-                                    response.error?.message
-                                        ?: response.error?.code?.toString()
-                                        ?: "Error parsing error message"
-                                )
-                            } else {
-                                onProgress(1f)
-                            }
-                        }
-                    )
-                    onProgress(0.8f)
-                } else {
-                    try {
-                        onPayInvoiceThroughIntent(it)
-                    } catch (e: Exception) {
-                        onError(context.getString(R.string.lightning_wallets_not_found2))
-                    }
-                    onProgress(0f)
-                }
-            },
-            onError = onError,
-            onProgress = onProgress
-        )
     }
 
     fun report(note: Note, type: ReportEvent.ReportType, content: String = "") {

app/src/main/res/values/strings.xml

@@ -582,4 +582,6 @@
     <string name="forwarding_zaps_to">Forwarding zaps to</string>
 
     <string name="lightning_wallets_not_found2">Lightning wallets not found</string>
+    <string name="paid">Paid</string>
+    <string name="wallet_number">Wallet %1$s</string>
 </resources>