//
//  ProfileView.swift
//  LazyBear
//
//  Created by Dennis Concepción Martín on 4/4/21.
//

import SwiftUI

struct ProfileView: View {
    @ObservedObject var profileData = ProfileData()
    @Environment(\.managedObjectContext) private var moc
    @FetchRequest(entity: WatchlistCompany.entity(), sortDescriptors: [])
    var watchlistCompanies: FetchedResults<WatchlistCompany>
    
    var body: some View {
        NavigationView {
            List {
                Text("Hello World")
                Button("Save company", action: addCompany)
                Button("Delete company", action: removeCompany)
                Button("Request", action: {profileData.get(watchlistCompanies)})
                Button("Print watchlist", action: {print(watchlistCompanies.map {$0.symbol})})
            }
            .navigationTitle("My profile")
            .navigationBarTitleDisplayMode(.inline)
        }
    }
    
    // REMOVE IN PRODUCTION
    private func addCompany() {
        let watchlistCompany = WatchlistCompany(context: moc)
        watchlistCompany.symbol = "FB"
        watchlistCompany.name = "Facebook Inc"
        watchlistCompany.watchlist = "MyWatchlist"
        do {
            try moc.save()
            print("Company saved")
        } catch {
            print(error.localizedDescription)
        }
    }
    
    private func removeCompany() {
        let symbols = watchlistCompanies.map { $0.symbol }
        let index = symbols.firstIndex(of: "aapl")
        let company = watchlistCompanies[index!]
        moc.delete(company)
        do {
            try moc.save()
            print("Company deleted")
        } catch {
            // Error
        }
    }
}

struct ProfileView_Previews: PreviewProvider {
    static var previews: some View {
        ProfileView()
    }
}