//
//  ViewsComponentsToastOverlay.swift
//  Mobile Music Assistant
//
//  Created by Sven Hanold on 09.04.26.
//

import SwiftUI

// MARK: - Toast Manager

@Observable
class MAToastManager {
    private(set) var message: String = ""
    private(set) var icon: String = "heart.fill"
    private(set) var iconColor: Color = .red
    private(set) var isVisible: Bool = false
    private var hideTask: Task<Void, Never>?

    func show(_ message: String, icon: String = "heart.fill", iconColor: Color = .red) {
        self.message = message
        self.icon = icon
        self.iconColor = iconColor
        withAnimation(.spring(duration: 0.3)) { isVisible = true }
        hideTask?.cancel()
        hideTask = Task { @MainActor in
            try? await Task.sleep(for: .seconds(2))
            guard !Task.isCancelled else { return }
            withAnimation(.easeOut(duration: 0.4)) { isVisible = false }
        }
    }
}

// MARK: - Toast View Modifier

struct ToastOverlayModifier: ViewModifier {
    @Environment(MAToastManager.self) private var toastManager

    func body(content: Content) -> some View {
        content.overlay(alignment: .top) {
            if toastManager.isVisible {
                HStack(spacing: 8) {
                    Image(systemName: toastManager.icon)
                        .foregroundStyle(toastManager.iconColor)
                    Text(toastManager.message)
                        .font(.subheadline.weight(.medium))
                        .lineLimit(1)
                }
                .padding(.horizontal, 18)
                .padding(.vertical, 11)
                .background(.ultraThinMaterial, in: Capsule())
                .shadow(color: .black.opacity(0.15), radius: 8, y: 4)
                .padding(.top, 12)
                .transition(.move(edge: .top).combined(with: .opacity))
            }
        }
    }
}

extension View {
    func withToast() -> some View {
        modifier(ToastOverlayModifier())
    }
}