/* JellyfinPlayer/Swiftfin is subject to the terms of the Mozilla Public
 * License, v2.0. If a copy of the MPL was not distributed with this
 * file, you can obtain one at https://mozilla.org/MPL/2.0/.
 *
 * Copyright 2021 Aiden Vigue & Jellyfin Contributors
 */

import Introspect
import JellyfinAPI
import Stinsen
import SwiftUI

class VideoPlayerItem: ObservableObject {
    @Published var shouldShowPlayer: Bool = false
}

struct ItemView: View {
    @EnvironmentObject var itemRouter: NavigationRouter<ItemCoordinator.Route>
    @StateObject var viewModel: ItemViewModel
    @StateObject private var videoPlayerItem = VideoPlayerItem()
    @State private var videoIsLoading: Bool = false // This variable is only changed by the underlying VLC view.
    @State private var isLoading: Bool = false
    @State private var viewDidLoad: Bool = false

    var body: some View {
        ZStack {
            Group {
                if let item = viewModel.item {
                    if item.type == "Movie" {
                        MovieItemView(viewModel: .init(item: item))
                    } else if item.type == "Season" {
                        SeasonItemView(viewModel: .init(item: item))
                    } else if item.type == "Series" {
                        SeriesItemView(viewModel: .init(item: item))
                    } else if item.type == "Episode" {
                        EpisodeItemView(viewModel: .init(item: item))
                    } else {
                        Text("Type: \(item.type ?? "") not implemented yet :(")
                    }
                }
            }
            .introspectTabBarController { UITabBarController in
                UITabBarController.tabBar.isHidden = false
            }
            .navigationBarHidden(false)
            .navigationBarBackButtonHidden(false)
            .environmentObject(videoPlayerItem)
        }
        .onReceive(videoPlayerItem.$shouldShowPlayer) { flag in
            guard flag,
                  let item = viewModel.item else { return }
            self.itemRouter.route(to: .videoPlayer(item: item))
        }
        if viewModel.isLoading {
            ProgressView()
        }
    }
}