//
//  AccountView.swift
//  Werkout_ios
//
//  Created by Trey Tartt on 6/15/23.
//

import Foundation
import SwiftUI

struct AccountView: View {
    @State var completedWorkouts: [CompletedWorkout]?
    @ObservedObject var userStore = UserStore.shared
    
    var body: some View {
        VStack(alignment: .leading) {
            if let registeredUser = userStore.registeredUser {
                if let nickName = registeredUser.nickName {
                    Text(nickName)
                        .font(.title)
                }
                
                HStack {
                    Text(registeredUser.firstName ?? "-")
                    Text(registeredUser.lastName ?? "-")
                }
                
                if let email = registeredUser.email {
                    Text(email)
                }
            }
            
            if let completedWorkouts = completedWorkouts {
                VStack(alignment: .leading) {
                    Divider()
                    Text("Workout History:")
                    HStack {
                        Text("Number of workouts:")
                        Text("\(completedWorkouts.count)")
                    }
                    
                    if let lastWorkout = completedWorkouts.last {
                        HStack {
                            Text("Last workout:")
                            Text(lastWorkout.workoutStartTime)
                        }
                    }

                }
            }
            Spacer()
            
            Button("Logout", action: {
                userStore.logout()
            })
            .frame(maxWidth: .infinity, alignment: .center)
            .frame(height: 44)
            .foregroundColor(.white)
            .background(.red)
            .cornerRadius(8)
            .padding()
            .frame(maxWidth: .infinity)
        }
        .padding()
        .onAppear{
            if completedWorkouts == nil {
                fetchCompletedWorkouts()
            }
        }
    }
    
    func fetchCompletedWorkouts() {
        CompletedWorkoutFetchable().fetch(completion: { result in
            switch result {
            case .success(let model):
                completedWorkouts = model
            case .failure(let failure):
                fatalError(failure.localizedDescription)
            }
        })
    }
}

struct AccountView_Previews: PreviewProvider {
    static let userStore = UserStore.shared
    static let completedWorkouts = PreviewWorkout.parseCompletedWorkouts()
    
    static var previews: some View {
        AccountView(completedWorkouts: completedWorkouts)
            .onAppear{
                userStore.setFakeUser()
            }
    }
}