Lightning Zaps

Added initial lightning zaps/tipping integration

Changelog-Added: Receive Lightning Zaps

damus/Components/InvoiceView.swift

@@ -31,17 +31,16 @@ func open_with_wallet(wallet: Wallet.Model, invoice: String) {
 struct InvoiceView: View {
     @Environment(\.colorScheme) var colorScheme
     @Environment(\.openURL) private var openURL
-    
+    let our_pubkey: String
     let invoice: Invoice
     @State var showing_select_wallet: Bool = false
-    @EnvironmentObject var user_settings: UserSettingsStore
     
     var PayButton: some View {
         Button {
-            if user_settings.show_wallet_selector {
+            if should_show_wallet_selector(our_pubkey) {
                 showing_select_wallet = true
             } else {
-                open_with_wallet(wallet: user_settings.default_wallet.model, invoice: invoice.string)
+                open_with_wallet(wallet: get_default_wallet(our_pubkey).model, invoice: invoice.string)
             }
         } label: {
             RoundedRectangle(cornerRadius: 20)
@@ -70,7 +69,7 @@ struct InvoiceView: View {
                     Text("Lightning Invoice", comment: "Indicates that the view is for paying a Lightning invoice.")
                 }
                 Divider()
-                Text(invoice.description)
+                Text(invoice.description_string)
                 Text(invoice.amount.amount_sats_str())
                     .font(.title)
                 PayButton
@@ -80,16 +79,16 @@ struct InvoiceView: View {
             .padding(30)
         }
         .sheet(isPresented: $showing_select_wallet, onDismiss: {showing_select_wallet = false}) {
-            SelectWalletView(showingSelectWallet: $showing_select_wallet, invoice: invoice.string).environmentObject(user_settings)
+            SelectWalletView(showingSelectWallet: $showing_select_wallet, our_pubkey: our_pubkey, invoice: invoice.string)
         }
     }
 }
 
-let test_invoice = Invoice(description: "this is a description", amount: .specific(10000), string: "lnbc100n1p357sl0sp5t9n56wdztun39lgdqlr30xqwksg3k69q4q2rkr52aplujw0esn0qpp5mrqgljk62z20q4nvgr6lzcyn6fhylzccwdvu4k77apg3zmrkujjqdpzw35xjueqd9ejqcfqv3jhxcmjd9c8g6t0dcxqyjw5qcqpjrzjqt56h4gvp5yx36u2uzqa6qwcsk3e2duunfxppzj9vhypc3wfe2wswz607uqq3xqqqsqqqqqqqqqqqlqqyg9qyysgqagx5h20aeulj3gdwx3kxs8u9f4mcakdkwuakasamm9562ffyr9en8yg20lg0ygnr9zpwp68524kmda0t5xp2wytex35pu8hapyjajxqpsql29r", expiry: 604800, payment_hash: Data(), created_at: 1666139119)
+let test_invoice = Invoice(description: .description("this is a description"), amount: .specific(10000), string: "lnbc100n1p357sl0sp5t9n56wdztun39lgdqlr30xqwksg3k69q4q2rkr52aplujw0esn0qpp5mrqgljk62z20q4nvgr6lzcyn6fhylzccwdvu4k77apg3zmrkujjqdpzw35xjueqd9ejqcfqv3jhxcmjd9c8g6t0dcxqyjw5qcqpjrzjqt56h4gvp5yx36u2uzqa6qwcsk3e2duunfxppzj9vhypc3wfe2wswz607uqq3xqqqsqqqqqqqqqqqlqqyg9qyysgqagx5h20aeulj3gdwx3kxs8u9f4mcakdkwuakasamm9562ffyr9en8yg20lg0ygnr9zpwp68524kmda0t5xp2wytex35pu8hapyjajxqpsql29r", expiry: 604800, payment_hash: Data(), created_at: 1666139119)
 
 struct InvoiceView_Previews: PreviewProvider {
     static var previews: some View {
-        InvoiceView(invoice: test_invoice)
+        InvoiceView(our_pubkey: "", invoice: test_invoice)
             .frame(width: 200, height: 200)
     }
 }

damus/Components/InvoicesView.swift

@@ -8,6 +8,7 @@
 import SwiftUI
 
 struct InvoicesView: View {
+    let our_pubkey: String
     var invoices: [Invoice]
     
     @State var open_sheet: Bool = false
@@ -16,7 +17,7 @@ struct InvoicesView: View {
     var body: some View {
         TabView {
             ForEach(invoices, id: \.string) { invoice in
-                InvoiceView(invoice: invoice)
+                InvoiceView(our_pubkey: our_pubkey, invoice: invoice)
                 .tabItem {
                     Text(invoice.string)
                 }
@@ -30,7 +31,7 @@ struct InvoicesView: View {
 
 struct InvoicesView_Previews: PreviewProvider {
     static var previews: some View {
-        InvoicesView(invoices: [Invoice.init(description: "description", amount: .specific(10000), string: "invstr", expiry: 100000, payment_hash: Data(), created_at: 1000000)])
+        InvoicesView(our_pubkey: "", invoices: [Invoice.init(description: .description("description"), amount: .specific(10000), string: "invstr", expiry: 100000, payment_hash: Data(), created_at: 1000000)])
             .frame(width: 300)
     }
 }

damus/Components/ZapButton.swift

@@ -0,0 +1,130 @@
+//
+//  ZapButton.swift
+//  damus
+//
+//  Created by William Casarin on 2023-01-17.
+//
+
+import SwiftUI
+
+struct ZapButton: View {
+    let damus_state: DamusState
+    let event: NostrEvent
+    let lnurl: String
+    
+    @ObservedObject var bar: ActionBarModel
+    
+    @State var zapping: Bool = false
+    @State var invoice: String = ""
+    @State var slider_value: Double = 0.0
+    @State var slider_visible: Bool = false
+    @State var showing_select_wallet: Bool = false
+    
+    func send_zap() {
+        guard let privkey = damus_state.keypair.privkey else {
+            return
+        }
+        
+        // Only take the first 10 because reasons
+        let relays = Array(damus_state.pool.descriptors.prefix(10))
+        let target = ZapTarget.note(id: event.id, author: event.pubkey)
+        // TODO: gather comment?
+        let content = ""
+        let zapreq = make_zap_request_event(pubkey: damus_state.pubkey, privkey: privkey, content: content, relays: relays, target: target)
+        
+        zapping = true
+        
+        Task {
+            var mpayreq = damus_state.lnurls.lookup(target.pubkey)
+            if mpayreq == nil {
+                mpayreq = await fetch_static_payreq(lnurl)
+            }
+            
+            guard let payreq = mpayreq else {
+                // TODO: show error
+                DispatchQueue.main.async {
+                    zapping = false
+                }
+                return
+            }
+            
+            DispatchQueue.main.async {
+                damus_state.lnurls.endpoints[target.pubkey] = payreq
+            }
+            
+            guard let inv = await fetch_zap_invoice(payreq, zapreq: zapreq, amount: 1000000) else {
+                DispatchQueue.main.async {
+                    zapping = false
+                }
+                return
+            }
+            
+            DispatchQueue.main.async {
+                zapping = false
+                
+                if should_show_wallet_selector(damus_state.pubkey) {
+                    self.invoice = inv
+                    self.showing_select_wallet = true
+                } else {
+                    open_with_wallet(wallet: get_default_wallet(damus_state.pubkey).model, invoice: inv)
+                }
+            }
+        }
+        
+        //damus_state.pool.send(.event(zapreq))
+    }
+    
+    var zap_img: String {
+        if bar.zapped {
+            return "bolt.fill"
+        }
+        
+        if !zapping {
+            return "bolt"
+        }
+        
+        return "bolt.horizontal.fill"
+    }
+    
+    var zap_color: Color? {
+        if bar.zapped {
+            return Color.orange
+        }
+        
+        if !zapping {
+            return nil
+        }
+        
+        return Color.yellow
+    }
+    
+    var body: some View {
+        ZStack {
+            EventActionButton(img: zap_img, col: zap_color) {
+                if bar.zapped {
+                    //notify(.delete, bar.our_tip)
+                } else if !zapping {
+                    send_zap()
+                }
+            }
+            
+            Text("\(bar.zap_total > 0 ? "\(format_msats_abbrev(bar.zap_total))" : "")")
+                .font(.footnote)
+                .foregroundColor(bar.zapped ? Color.orange : Color.gray)
+        }
+        .sheet(isPresented: $showing_select_wallet, onDismiss: {showing_select_wallet = false}) {
+            SelectWalletView(showingSelectWallet: $showing_select_wallet, our_pubkey: damus_state.pubkey, invoice: invoice)
+        }
+    }
+}
+
+
+/*
+struct ZapButton_Previews: PreviewProvider {
+    static var previews: some View {
+        let bar = ActionBarModel.empty()
+        ZapButton(damus_state: test_damus_state(), event: NostrEvent(content: "hi", pubkey: "pk"), bar: bar)
+    }
+}
+
+*/