//
//  UserAddress.swift
//  SimpleX
//
//  Created by Evgeny Poberezkin on 31/01/2022.
//  Copyright © 2022 SimpleX Chat. All rights reserved.
//

import SwiftUI

struct UserAddress: View {
    @EnvironmentObject var chatModel: ChatModel
    @State private var deleteAddressAlert = false

    var body: some View {
        ScrollView {
            VStack (alignment: .leading) {
                Text("You can share your address as a link or as a QR code - anybody will be able to connect to you. You won't lose your contacts if you later delete it.")
                    .padding(.bottom)
                if let userAdress = chatModel.userAddress {
                    QRCode(uri: userAdress)
                    HStack {
                        Button {
                            showShareSheet(items: [userAdress])
                        } label: {
                            Label("Share link", systemImage: "square.and.arrow.up")
                        }
                        .padding()

                        Button(role: .destructive) { deleteAddressAlert = true } label: {
                            Label("Delete address", systemImage: "trash")
                        }
                        .padding()
                        .alert(isPresented: $deleteAddressAlert) {
                            Alert(
                                title: Text("Delete address?"),
                                message: Text("All your contacts will remain connected"),
                                primaryButton: .destructive(Text("Delete")) {
                                    Task {
                                        do {
                                            try await apiDeleteUserAddress()
                                            DispatchQueue.main.async {
                                                chatModel.userAddress = nil
                                            }
                                        } catch let error {
                                            logger.error("UserAddress apiDeleteUserAddress: \(error.localizedDescription)")
                                        }
                                    }
                                }, secondaryButton: .cancel()
                            )
                        }
                    }
                    .frame(maxWidth: .infinity)
                } else {
                    Button {
                        Task {
                            do {
                                let userAddress = try await apiCreateUserAddress()
                                DispatchQueue.main.async {
                                    chatModel.userAddress = userAddress
                                }
                            } catch let error {
                                logger.error("UserAddress apiCreateUserAddress: \(error.localizedDescription)")
                            }
                        }
                    } label: { Label("Create address", systemImage: "qrcode") }
                    .frame(maxWidth: .infinity)
                }
            }
            .padding()
            .frame(maxHeight: .infinity, alignment: .top)
        }
    }
}

struct UserAddress_Previews: PreviewProvider {
    static var previews: some View {
        let chatModel = ChatModel()
        chatModel.userAddress = "https://simplex.chat/contact#/?v=1&smp=smp%3A%2F%2FPQUV2eL0t7OStZOoAsPEV2QYWt4-xilbakvGUGOItUo%3D%40smp6.simplex.im%2FK1rslx-m5bpXVIdMZg9NLUZ_8JBm8xTt%23MCowBQYDK2VuAyEALDeVe-sG8mRY22LsXlPgiwTNs9dbiLrNuA7f3ZMAJ2w%3D"
        return Group {
            UserAddress()
                .environmentObject(chatModel)
            UserAddress()
                .environmentObject(ChatModel())
        }
    }
}