//
//  HomeViewModel.swift
//  FitnessApp
//
//  Created by Matt Bruce on 12/20/24.
//
import SwiftUI

@Observable
class HomeViewModel {
    
    let healthManager = HealthManager.shared
    
    var activities: [Activity] = []
    var workouts: [Workout] = []
    var calories: Int = 0
    var exercise: Int = 0
    var stand: Int = 0

//    var mockActivities = [
//        Activity(id: 0, title: "Today Steps", subtitle: "10,000 steps", image: "figure.walk", tintColor: .green, amount: "9,812"),
//        Activity(id: 1, title: "Today Steps", subtitle: "1,000 steps", image: "figure.walk", tintColor: .blue, amount: "812"),
//        Activity(id: 2, title: "Today Steps", subtitle: "12,000 steps", image: "figure.walk", tintColor: .purple, amount: "9,0000"),
//        Activity(id: 3, title: "Today Steps", subtitle: "50,000 steps", image: "figure.run", tintColor: .red, amount: "104,812")
//    ]
//    
//    var mockWorkouts = [
//        Workout(id: 0, title: "Running", image: "figure.run", tintColor: .green, duration: "1 hrs", date: "Aug 3", calories: "100 kcal"),
//        Workout(id: 1, title: "Strength Training", image: "figure.run", tintColor: .purple, duration: "1.5 hrs", date: "Aug 3", calories: "130 kcal"),
//        Workout(id: 2, title: "Walking", image: "figure.run", tintColor: .blue, duration: ".5 hrs", date: "Aug 3", calories: "250 kcal"),
//        Workout(id: 3, title: "Bike", image: "figure.run", tintColor: .red, duration: "2 hrs", date: "Aug 29", calories: "500 kcal")
//    ]
    
    init() {
        Task {
            do {
                try await healthManager.requestHealthKitAccess()
                fetchTodayStandHours()
                fetchTodayCaloriesBurned()
                fetchTodayExerciseTime()
                fetchTodaySteps()
                fetchCurrentWeekActivities()
                fetchCurrentMonthActivities()
            } catch {
                print(error.localizedDescription)
            }
        }
        
        func fetchTodayCaloriesBurned() {
            healthManager.fetchTodayCaloriesBurned() { result in
                switch result {
                case .success(let calories):
                    DispatchQueue.main.async {
                        let activity = Activity(title: "Calories Burned", subtitle: "today", image: "flame", tintColor: .red, amount: calories.formattedNumberString())
                        self.calories = Int(calories)
                        self.activities.append(activity)
                    }
                case .failure(let failure):
                    print(failure.localizedDescription)
                }
            }
        }
        
        func fetchTodayExerciseTime() {
            healthManager.fetchTodayExerciseTime() { result in
                switch result {
                case .success(let exercise):
                    DispatchQueue.main.async {
                        self.exercise = Int(exercise)
                    }
                case .failure(let failure):
                    print(failure.localizedDescription)
                }
            }
        }
        
        func fetchTodayStandHours() {
            healthManager.fetchTodayStandHours() { result in
                switch result {
                case .success(let hours):
                    DispatchQueue.main.async {
                        self.stand = Int(hours)
                    }
                case .failure(let failure):
                    print(failure.localizedDescription)
                }
            }
        }
        
        func fetchTodaySteps() {
            healthManager.fetchTodaySteps() { result in
                switch result {
                case .success(let steps):
                    DispatchQueue.main.async {
                        self.activities.append(steps)
                    }
                case .failure(let failure):
                    print(failure.localizedDescription)
                }
            }
        }
        
        func fetchCurrentWeekActivities() {
            healthManager.fetchCurrentWeekWorkoutStats { result in
                switch result {
                case .success(let activities):
                    DispatchQueue.main.async {
                        self.activities.append(contentsOf: activities)
                    }
                case .failure(let failure):
                    print(failure.localizedDescription)
                }
            }
        }
        
        func fetchCurrentMonthActivities() {
            healthManager.fetchWorkoutsForMonth(month: Date()) { result in
                switch result {
                case .success(let activities):
                    DispatchQueue.main.async {
                        self.workouts.append(contentsOf: activities)
                    }
                case .failure(let failure):
                    print(failure.localizedDescription)
                }
            }
        }
    }
}