////
////  SettingsView.swift
////  Simoleon
////
////  Created by Dennis Concepción Martín on 19/07/2021.
////
//
//import SwiftUI
//import Purchases
//
//struct SettingsView: View {
//    @Environment(\.managedObjectContext) private var viewContext
//    @FetchRequest(sortDescriptors: []) private var defaultCurrency: FetchedResults<DefaultCurrency>
//    @State private var selectedDefaultCurrency = ""
//    @State private var showingSubscriptionPaywall = false
//    @State private var entitlementIsActive = false
//    @State private var alertTitle = ""
//    @State private var alertMessage = ""
//    @State private var showingAlert = false
//    @State private var searchCurrency = ""
//    let file = File()
//    
//    /*
//     If searched currency string is empty:
//     * Show all currencies
//     else:
//     * Show filtered list of currencies containing searched currency string
//     */
//    var searchResults: [String] {
//        let currencyPairsSupported: [String] = try! file.read(json: "CurrencyPairsSupported.json")
//        if searchCurrency.isEmpty {
//            return currencyPairsSupported.sorted()
//        } else {
//            return currencyPairsSupported.filter { $0.contains(searchCurrency.uppercased()) }
//        }
//    }
//    
//    var body: some View {
//        List {
//            Section(header: Text("Preferences")) {
//                if entitlementIsActive {
//                    Picker("Default currency", selection: $selectedDefaultCurrency) {
//                        SearchBar(placeholder: "Search...", text: $searchCurrency)
//                            .padding(5)
//                        
//                        ForEach(searchResults, id: \.self) { currencyPairsSupported in
//                            Text(currencyPairsSupported)
//                                .tag(currencyPairsSupported)
//                        }
//                    }
//                } else {
//                    LockedCurrencyPicker()
//                        .contentShape(Rectangle())
//                        .onTapGesture { showingSubscriptionPaywall = true }
//                }
//            }
//            
//            Section(header: Text("Stay in touch")) {
//                Link(destination: URL(string: "https://itunes.apple.com/app/id1576390953?action=write-review")!) {
//                    HStack {
//                        Image(systemName: "heart.fill")
//                            .foregroundColor(Color(.systemRed))
//                            .imageScale(.large)
//
//                        Text("Rate Simoleon")
//                    }
//                }
//                
//                Link(destination: URL(string: "https://twitter.com/dennisconcep")!) {
//                    HStack {
//                        Image("TwitterLogo")
//                            .resizable()
//                            .frame(width: 30, height: 30)
//                        
//                        Text("Developer's Twitter")
//                    }
//                }
//                
//                Link(destination: URL(string: "https://dennistech.io/contact")!) {
//                    HStack {
//                        Image(systemName: "envelope.fill")
//                            .foregroundColor(Color(.systemIndigo))
//                            .imageScale(.large)
//                        
//                        Text("Contact")
//                    }
//                }
//            }
//            
//            Section(header: Text("About")) {
//                Link(destination: URL(string: "https://dennistech.io")!) {
//                    Text("Website")
//                }
//                
//                Link(destination: URL(string: "https://dennistech.io/simoleon-privacy-policy")!) {
//                    Text("Privacy Policy")
//                }
//                
//                Link(destination: URL(string: "https://dennistech.io/simoleon-terms-of-use")!) {
//                    Text("Terms of Use")
//                }
//            }
//        }
//        .alert(isPresented: $showingAlert) {
//            Alert(title: Text(alertTitle), message: Text(alertMessage), dismissButton: .default(Text("Ok")))
//        }
//        .onAppear {
//            checkEntitlement()
//            /*
//             if selectedDefaultCurrency is empty:
//             * View is appearing for the first time
//             * Set initial default curency for picker
//             else:
//             * View is appearing after user selected another default currency
//             * Save it to core data
//             */
////            if selectedDefaultCurrency == "" {
////                selectedDefaultCurrency = defaultCurrency.first?.pair ?? "USD/GBP"
////            } else {
////                setCoreData()
////            }
//        }
//        .listStyle(InsetGroupedListStyle())
//        .navigationTitle("Settings")
//        .sheet(isPresented: $showingSubscriptionPaywall, onDismiss: checkEntitlement) {
//            SubscriptionPaywall(showingSubscriptionPaywall: $showingSubscriptionPaywall)
//        }
//        .if(UIDevice.current.userInterfaceIdiom == .phone) { content in
//            NavigationView { content }
//        }
//    }
//     
//    // Save default currency to core data
////    private func setCoreData() {
////        if defaultCurrency.isEmpty {  // If it's empty -> add record
////            let defaultCurrency = DefaultCurrency(context: viewContext)
////            defaultCurrency.pair = selectedDefaultCurrency
////            
////            do {
////                try viewContext.save()
////            } catch {
////                print(error.localizedDescription)
////            }
////        } else {  // If not, update record
////            defaultCurrency.first?.pair = selectedDefaultCurrency
////            try? viewContext.save()
////        }
////    }
//    
//    // Check if user subscription is active
//    private func checkEntitlement() {
//        #if SCREENSHOTS
//        entitlementIsActive = true
//        #else
//        Purchases.shared.purchaserInfo { (purchaserInfo, error) in
//            if purchaserInfo?.entitlements["all"]?.isActive == true {
//                entitlementIsActive = true
//            }
//            
//            if let error = error as NSError? {
//                alertTitle = error.localizedDescription
//                alertMessage = error.localizedFailureReason ?? ""
//                showingAlert = true
//            }
//        }
//        #endif
//    }
//}
//
//struct SettingsView_Previews: PreviewProvider {
//    static var previews: some View {
//        SettingsView()
//    }
//}