damus/damus/Views/Wallet/WalletView.swift

//
//  WalletView.swift
//  damus
//
//  Created by William Casarin on 2023-05-05.
//

import SwiftUI

struct WalletView: View {
    let damus_state: DamusState
    @State var show_settings: Bool = false
    @ObservedObject var model: WalletModel
    @ObservedObject var settings: UserSettingsStore
    
    init(damus_state: DamusState, model: WalletModel? = nil) {
        self.damus_state = damus_state
        self._model = ObservedObject(wrappedValue: model ?? damus_state.wallet)
        self._settings = ObservedObject(wrappedValue: damus_state.settings)
    }
    
    func MainWalletView(nwc: WalletConnectURL) -> some View {
        ScrollView {
            VStack(spacing: 35) {
                VStack(spacing: 5) {
                    
                    BalanceView(balance: model.balance)
                    
                    TransactionsView(damus_state: damus_state, transactions: model.transactions)
                }
            }
            .navigationTitle(NSLocalizedString("Wallet", comment: "Navigation title for Wallet view"))
            .navigationBarTitleDisplayMode(.inline)
            .padding()
            .padding(.bottom, 50)
        }
    }

    var body: some View {
        switch model.connect_state {
        case .new:
            ConnectWalletView(model: model, nav: damus_state.nav, userKeypair: self.damus_state.keypair)
        case .none:
            ConnectWalletView(model: model, nav: damus_state.nav, userKeypair: self.damus_state.keypair)
        case .existing(let nwc):
            MainWalletView(nwc: nwc)
                .toolbar {
                    ToolbarItem(placement: .navigationBarTrailing) {
                        Button(
                            action: { show_settings = true },
                            label: {
                                Image("settings")
                                    .foregroundColor(.gray)
                            }
                        )
                    }
                }
                .onAppear() {
                    Task { await self.updateWalletInformation() }
                }
                .refreshable {
                    model.resetWalletStateInformation()
                    await self.updateWalletInformation()
                }
                .sheet(isPresented: $show_settings, onDismiss: { self.show_settings = false }) {
                    ScrollView {
                        NWCSettings(damus_state: damus_state, nwc: nwc, model: model, settings: settings)
                            .padding(.top, 30)
                    }
                    .presentationDragIndicator(.visible)
                    .presentationDetents([.large])
                }
        }
    }
    
    @MainActor
    func updateWalletInformation() async {
        guard let url = damus_state.settings.nostr_wallet_connect,
              let nwc = WalletConnectURL(str: url) else {
            return
        }
        
        let flusher: OnFlush? = nil
        
        let delay = 0.0     // We don't need a delay when fetching a transaction list or balance

        WalletConnect.request_transaction_list(url: nwc, pool: damus_state.nostrNetwork.pool, post: damus_state.nostrNetwork.postbox, delay: delay, on_flush: flusher)
        WalletConnect.request_balance_information(url: nwc, pool: damus_state.nostrNetwork.pool, post: damus_state.nostrNetwork.postbox, delay: delay, on_flush: flusher)
        return
    }
}

let test_wallet_connect_url = WalletConnectURL(pubkey: test_pubkey, relay: .init("wss://relay.damus.io")!, keypair: test_damus_state.keypair.to_full()!, lud16: "jb55@sendsats.com")

struct WalletView_Previews: PreviewProvider {
    static let tds = test_damus_state
    static var previews: some View {
        WalletView(damus_state: tds, model: WalletModel(state: .existing(test_wallet_connect_url), settings: tds.settings))
    }
}