//
// 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 (c) 2022 Jellyfin & Jellyfin Contributors
//

import Foundation
import SwiftUI

struct LiveTVProgramsView: View {
    @EnvironmentObject
    private var programsRouter: LiveTVProgramsCoordinator.Router
    @StateObject
    var viewModel = LiveTVProgramsViewModel()

    var body: some View {
        ScrollView {
            LazyVStack(alignment: .leading) {
                if !viewModel.recommendedItems.isEmpty,
                   let items = viewModel.recommendedItems
                {
                    Text("On Now")
                        .font(.headline)
                        .fontWeight(.semibold)
                        .padding(.leading, 90)
                    ScrollView(.horizontal, showsIndicators: false) {
                        LazyHStack {
                            Spacer().frame(width: 45)
                            ForEach(items, id: \.id) { item in
                                Button {
                                    if let chanId = item.channelId,
                                       let chan = viewModel.findChannel(id: chanId)
                                    {
                                        self.viewModel.fetchVideoPlayerViewModel(item: chan) { playerViewModel in
                                            self.programsRouter.route(to: \.videoPlayer, playerViewModel)
                                        }
                                    }
                                } label: {
                                    LandscapeItemElement(item: item)
                                }
                                .buttonStyle(PlainNavigationLinkButtonStyle())
                            }
                            Spacer().frame(width: 45)
                        }
                    }.frame(height: 350)
                }
                if !viewModel.seriesItems.isEmpty,
                   let items = viewModel.seriesItems
                {
                    Text("Shows")
                        .font(.headline)
                        .fontWeight(.semibold)
                        .padding(.leading, 90)
                    ScrollView(.horizontal, showsIndicators: false) {
                        LazyHStack {
                            Spacer().frame(width: 45)
                            ForEach(items, id: \.id) { item in
                                Button {
                                    if let chanId = item.channelId,
                                       let chan = viewModel.findChannel(id: chanId)
                                    {
                                        self.viewModel.fetchVideoPlayerViewModel(item: chan) { playerViewModel in
                                            self.programsRouter.route(to: \.videoPlayer, playerViewModel)
                                        }
                                    }
                                } label: {
                                    LandscapeItemElement(item: item)
                                }
                                .buttonStyle(PlainNavigationLinkButtonStyle())
                            }
                            Spacer().frame(width: 45)
                        }
                    }.frame(height: 350)
                }
                if !viewModel.movieItems.isEmpty,
                   let items = viewModel.movieItems
                {
                    Text("Movies")
                        .font(.headline)
                        .fontWeight(.semibold)
                        .padding(.leading, 90)
                    ScrollView(.horizontal, showsIndicators: false) {
                        LazyHStack {
                            Spacer().frame(width: 45)
                            ForEach(items, id: \.id) { item in
                                Button {
                                    if let chanId = item.channelId,
                                       let chan = viewModel.findChannel(id: chanId)
                                    {
                                        self.viewModel.fetchVideoPlayerViewModel(item: chan) { playerViewModel in
                                            self.programsRouter.route(to: \.videoPlayer, playerViewModel)
                                        }
                                    }
                                } label: {
                                    LandscapeItemElement(item: item)
                                }
                                .buttonStyle(PlainNavigationLinkButtonStyle())
                            }
                            Spacer().frame(width: 45)
                        }
                    }.frame(height: 350)
                }
                if !viewModel.sportsItems.isEmpty,
                   let items = viewModel.sportsItems
                {
                    Text("Sports")
                        .font(.headline)
                        .fontWeight(.semibold)
                        .padding(.leading, 90)
                    ScrollView(.horizontal, showsIndicators: false) {
                        LazyHStack {
                            Spacer().frame(width: 45)
                            ForEach(items, id: \.id) { item in
                                Button {
                                    if let chanId = item.channelId,
                                       let chan = viewModel.findChannel(id: chanId)
                                    {
                                        self.viewModel.fetchVideoPlayerViewModel(item: chan) { playerViewModel in
                                            self.programsRouter.route(to: \.videoPlayer, playerViewModel)
                                        }
                                    }
                                } label: {
                                    LandscapeItemElement(item: item)
                                }
                                .buttonStyle(PlainNavigationLinkButtonStyle())
                            }
                            Spacer().frame(width: 45)
                        }
                    }.frame(height: 350)
                }
                if !viewModel.kidsItems.isEmpty,
                   let items = viewModel.kidsItems
                {
                    Text("Kids")
                        .font(.headline)
                        .fontWeight(.semibold)
                        .padding(.leading, 90)
                    ScrollView(.horizontal, showsIndicators: false) {
                        LazyHStack {
                            Spacer().frame(width: 45)
                            ForEach(items, id: \.id) { item in
                                Button {
                                    if let chanId = item.channelId,
                                       let chan = viewModel.findChannel(id: chanId)
                                    {
                                        self.viewModel.fetchVideoPlayerViewModel(item: chan) { playerViewModel in
                                            self.programsRouter.route(to: \.videoPlayer, playerViewModel)
                                        }
                                    }
                                } label: {
                                    LandscapeItemElement(item: item)
                                }
                                .buttonStyle(PlainNavigationLinkButtonStyle())
                            }
                            Spacer().frame(width: 45)
                        }
                    }.frame(height: 350)
                }
                if !viewModel.newsItems.isEmpty,
                   let items = viewModel.newsItems
                {
                    Text("News")
                        .font(.headline)
                        .fontWeight(.semibold)
                        .padding(.leading, 90)
                    ScrollView(.horizontal, showsIndicators: false) {
                        LazyHStack {
                            Spacer().frame(width: 45)
                            ForEach(items, id: \.id) { item in
                                Button {
                                    if let chanId = item.channelId,
                                       let chan = viewModel.findChannel(id: chanId)
                                    {
                                        self.viewModel.fetchVideoPlayerViewModel(item: chan) { playerViewModel in
                                            self.programsRouter.route(to: \.videoPlayer, playerViewModel)
                                        }
                                    }
                                } label: {
                                    LandscapeItemElement(item: item)
                                }
                                .buttonStyle(PlainNavigationLinkButtonStyle())
                            }
                            Spacer().frame(width: 45)
                        }
                    }.frame(height: 350)
                }
            }
        }
    }
}