//
//  MainViewViewModel.swift
//  Werkout_ios
//
//  Created by Trey Tartt on 6/14/23.
//

import Combine
import Foundation

class WorkoutDetailViewModel: ObservableObject {
    enum WorkoutDetailViewModelStatus {
        case loading
        case showWorkout(Workout)
        case failed(String)
    }
    
    @Published var status: WorkoutDetailViewModelStatus
    let isPreview: Bool
    let workout: Workout

    init(workout: Workout, status: WorkoutDetailViewModelStatus? = nil, isPreview: Bool) {
        self.workout = workout
        self.isPreview = isPreview

        if let passedStatus = status {
            self.status = passedStatus
        } else {
            self.status = .loading
        }
    }

    func load() {
        guard case .loading = status else { return }
        WorkoutDetailFetchable(workoutID: workout.id).fetch(completion: { result in
            switch result {
            case .success(let model):
                DispatchQueue.main.async {
                    self.status = .showWorkout(model)
                }
            case .failure(let failure):
                DispatchQueue.main.async {
                    self.status = .failed("Failed to load workout details: \(failure.localizedDescription)")
                }
            }
        })
    }
}