//
//  FavoriteButton.swift
//  Mobile Music Assistant
//
//  Created by Sven Hanold on 05.04.26.
//

import SwiftUI

/// Reusable heart button for toggling favorites on artists, albums, and tracks.
struct FavoriteButton: View {
    @Environment(MAService.self) private var service
    @Environment(MAToastManager.self) private var toastManager
    let uri: String
    var size: CGFloat = 22
    var showInLight: Bool = false
    /// Display name shown in the toast when the item is liked. Pass nil to suppress the toast.
    var itemName: String? = nil

    private var isFavorite: Bool {
        service.libraryManager.isFavorite(uri: uri)
    }

    var body: some View {
        Button {
            let wasAlreadyFavorite = isFavorite
            Task {
                await service.libraryManager.toggleFavorite(
                    uri: uri,
                    currentlyFavorite: wasAlreadyFavorite
                )
                if let name = itemName {
                    if wasAlreadyFavorite {
                        toastManager.show(name, icon: "heart.slash", iconColor: .secondary)
                    } else {
                        toastManager.show(name, icon: "heart.fill", iconColor: .red)
                    }
                }
            }
        } label: {
            Image(systemName: isFavorite ? "heart.fill" : "heart")
                .font(.system(size: size))
                .foregroundStyle(isFavorite ? .red : (showInLight ? .white.opacity(0.7) : .secondary))
                .contentTransition(.symbolEffect(.replace))
        }
        .buttonStyle(.plain)
    }
}