import Defaults
import SwiftUI

struct VideoContextMenuView: View {
    @EnvironmentObject<NavigationModel> private var navigation
    @EnvironmentObject<PlaylistsModel> private var playlists
    @EnvironmentObject<RecentsModel> private var recents
    @EnvironmentObject<SubscriptionsModel> private var subscriptions

    let video: Video

    var body: some View {
        openChannelButton

        subscriptionButton

        if navigation.tabSelection != .playlists {
            addToPlaylistButton
        } else if let playlist = playlists.currentPlaylist {
            removeFromPlaylistButton(playlistID: playlist.id)
        }

        if case let .playlist(id) = navigation.tabSelection {
            removeFromPlaylistButton(playlistID: id)
        }
    }

    var openChannelButton: some View {
        Button {
            let recent = RecentItem(from: video.channel)
            recents.add(recent)
            navigation.isChannelOpen = true
            navigation.sidebarSectionChanged.toggle()
            navigation.tabSelection = .recentlyOpened(recent.tag)
        } label: {
            Label("\(video.author) Channel", systemImage: "rectangle.stack.fill.badge.person.crop")
        }
    }

    var subscriptionButton: some View {
        Group {
            if subscriptions.isSubscribing(video.channel.id) {
                Button(role: .destructive) {
                    #if os(tvOS)
                        subscriptions.unsubscribe(video.channel.id)
                    #else
                        navigation.presentUnsubscribeAlert(video.channel)
                    #endif
                } label: {
                    Label("Unsubscribe", systemImage: "xmark.circle")
                }
            } else {
                Button {
                    subscriptions.subscribe(video.channel.id) {
                        navigation.sidebarSectionChanged.toggle()
                    }
                } label: {
                    Label("Subscribe", systemImage: "star.circle")
                }
            }
        }
    }

    var addToPlaylistButton: some View {
        Button {
            navigation.presentAddToPlaylist(video)
        } label: {
            Label("Add to playlist...", systemImage: "text.badge.plus")
        }
    }

    func removeFromPlaylistButton(playlistID: String) -> some View {
        Button(role: .destructive) {
            playlists.removeVideoFromPlaylist(videoIndexID: video.indexID!, playlistID: playlistID)
        } label: {
            Label("Remove from playlist", systemImage: "text.badge.minus")
        }
    }
}