//
//  UserStore.swift
//  Werkout_ios
//
//  Created by Trey Tartt on 6/25/23.
//

import Foundation

class UserStore: ObservableObject {
    static let userDefaultsRegisteredUserKey = "registeredUserKey"
    static let shared = UserStore()
    
    @Published public private(set) var registeredUser: RegisteredUser?
    
    init(registeredUser: RegisteredUser? = nil) {
        self.registeredUser = registeredUser
        if let data = UserDefaults.standard.data(forKey: UserStore.userDefaultsRegisteredUserKey),
           let model = try? JSONDecoder().decode(RegisteredUser.self, from: data) {
            self.registeredUser = model
        }
    }
    
    public var token: String? {
        guard let token = registeredUser?.token else {
            return nil
        }
        return "Token \(token)"
    }
    
    func login(postData: [String: Any], completion: @escaping (Bool)-> Void) {
        LoginFetchable(postData: postData).fetch(completion: { result in
            switch result {
            case .success(let model):
                DispatchQueue.main.async {
                    self.registeredUser = model
                    let data = try! JSONEncoder().encode(model)
                    UserDefaults.standard.set(data, forKey: UserStore.userDefaultsRegisteredUserKey)
                    completion(true)
                }
            case .failure(let failure):
                completion(false)
            }
        })
    }
    
    func logout() {
        self.registeredUser = nil
        UserDefaults.standard.set(nil, forKey: UserStore.userDefaultsRegisteredUserKey)
        NotificationCenter.default.post(name: NSNotification.Name("CreatedNewWorkout"), object: nil, userInfo: nil)
    }
    
    func setFakeUser() {
        self.registeredUser = PreviewWorkout.parseRegisterdUser()
    }
}