import SwiftUI

extension Color {
    init(hex: String) {
        let hex = hex.trimmingCharacters(in: CharacterSet.alphanumerics.inverted)
        var int: UInt64 = 0
        Scanner(string: hex).scanHexInt64(&int)
        let a, r, g, b: UInt64
        switch hex.count {
        case 3: (a, r, g, b) = (255, (int >> 8) * 17, (int >> 4 & 0xF) * 17, (int & 0xF) * 17)
        case 6: (a, r, g, b) = (255, int >> 16, int >> 8 & 0xFF, int & 0xFF)
        case 8: (a, r, g, b) = (int >> 24, int >> 16 & 0xFF, int >> 8 & 0xFF, int & 0xFF)
        default: (a, r, g, b) = (255, 0, 0, 0)
        }
        self.init(.sRGB, red: Double(r)/255, green: Double(g)/255, blue: Double(b)/255, opacity: Double(a)/255)
    }
}

@main
struct PulseHealthApp: App {
    @StateObject private var authManager = AuthManager()
    var body: some Scene {
        WindowGroup {
            if authManager.isLoggedIn {
                DashboardView().environmentObject(authManager)
            } else {
                LoginView().environmentObject(authManager)
            }
        }
    }
}

class AuthManager: ObservableObject {
    @Published var isLoggedIn: Bool = false
    @Published var token: String = ""
    @Published var userName: String = ""
    @Published var apiKey: String = ""
    init() {
        token = UserDefaults.standard.string(forKey: "authToken") ?? ""
        userName = UserDefaults.standard.string(forKey: "userName") ?? ""
        apiKey = UserDefaults.standard.string(forKey: "apiKey") ?? ""
        isLoggedIn = !token.isEmpty
    }
    func login(token: String, name: String, apiKey: String) {
        self.token = token; self.userName = name; self.apiKey = apiKey
        UserDefaults.standard.set(token, forKey: "authToken")
        UserDefaults.standard.set(name, forKey: "userName")
        UserDefaults.standard.set(apiKey, forKey: "apiKey")
        isLoggedIn = true
    }
    func logout() {
        token = ""; userName = ""; apiKey = ""
        UserDefaults.standard.removeObject(forKey: "authToken")
        UserDefaults.standard.removeObject(forKey: "userName")
        UserDefaults.standard.removeObject(forKey: "apiKey")
        isLoggedIn = false
    }
}