using Content.Shared.PDA;
using Robust.Shared.Utility;
using Content.Shared.CartridgeLoader;
using Content.Client.Message;
using Content.Shared.AlertLevel;
using Content.Shared.GameTicking;
using Robust.Client.UserInterface;
using Robust.Client.AutoGenerated;
using Robust.Client.Graphics;
using Robust.Client.UserInterface.XAML;
using Robust.Client.UserInterface.Controls;
using Robust.Shared.Timing;

namespace Content.Client.PDA
{
    [GenerateTypedNameReferences]
    public sealed partial class PdaMenu : PdaWindow
    {
        [Dependency] private IClipboardManager _clipboard = null!;
        [Dependency] private IGameTiming _gameTiming = default!;
        [Dependency] private IEntitySystemManager _entitySystem = default!;
        private readonly AlertLevelSystem _alert = default!;
        private readonly GameTicker _gameTicker;

        public const int HomeView = 0;
        public const int ProgramListView = 1;
        public const int SettingsView = 2;
        public const int ProgramContentView = 3;


        private string _pdaOwner = Loc.GetString("comp-pda-ui-unknown");
        private string _owner = Loc.GetString("comp-pda-ui-unknown");
        private string _jobTitle = Loc.GetString("comp-pda-ui-unassigned");
        private string _stationName = Loc.GetString("comp-pda-ui-unknown");
        private string _alertLevel = Loc.GetString("comp-pda-ui-unknown");
        private string _instructions = Loc.GetString("comp-pda-ui-unknown");


        private int _currentView;

        public event Action<EntityUid>? OnProgramItemPressed;
        public event Action<EntityUid>? OnUninstallButtonPressed;
        public event Action<EntityUid>? OnInstallButtonPressed;
        public PdaMenu()
        {
            IoCManager.InjectDependencies(this);
            _alert = _entitySystem.GetEntitySystem<AlertLevelSystem>();
            _gameTicker = _entitySystem.GetEntitySystem<GameTicker>();
            RobustXamlLoader.Load(this);

            ViewContainer.OnChildAdded += control => control.Visible = false;

            HomeButton.IconTexture = new SpriteSpecifier.Texture(new("/Textures/Interface/home.png"));
            FlashLightToggleButton.IconTexture = new SpriteSpecifier.Texture(new("/Textures/Interface/light.png"));
            EjectPenButton.IconTexture = new SpriteSpecifier.Texture(new("/Textures/Interface/pencil.png"));
            EjectIdButton.IconTexture = new SpriteSpecifier.Texture(new("/Textures/Interface/eject.png"));
            EjectPaiButton.IconTexture = new SpriteSpecifier.Texture(new("/Textures/Interface/pai.png"));
            ProgramCloseButton.IconTexture = new SpriteSpecifier.Texture(new("/Textures/Interface/Nano/cross.svg.png"));


            HomeButton.OnPressed += _ => ToHomeScreen();

            ProgramListButton.OnPressed += _ =>
            {
                HomeButton.IsCurrent = false;
                ProgramListButton.IsCurrent = true;
                SettingsButton.IsCurrent = false;
                ProgramTitle.IsCurrent = false;

                ChangeView(ProgramListView);
            };


            SettingsButton.OnPressed += _ =>
            {
                HomeButton.IsCurrent = false;
                ProgramListButton.IsCurrent = false;
                SettingsButton.IsCurrent = true;
                ProgramTitle.IsCurrent = false;

                ChangeView(SettingsView);
            };

            ProgramTitle.OnPressed += _ =>
            {
                HomeButton.IsCurrent = false;
                ProgramListButton.IsCurrent = false;
                SettingsButton.IsCurrent = false;
                ProgramTitle.IsCurrent = true;

                ChangeView(ProgramContentView);
            };

            ProgramCloseButton.OnPressed += _ =>
            {
                HideProgramHeader();
                ToHomeScreen();
            };

            PdaOwnerButton.OnPressed += _ =>
            {
                _clipboard.SetText(_pdaOwner);
            };

            IdInfoButton.OnPressed += _ =>
            {
                _clipboard.SetText(_owner + ", " + _jobTitle);
            };

            StationNameButton.OnPressed += _ =>
            {
                _clipboard.SetText(_stationName);
            };

            StationAlertLevelButton.OnPressed += _ =>
            {
                _clipboard.SetText(_alertLevel);
            };

            StationTimeButton.OnPressed += _ =>
            {
                var stationTime = _gameTiming.CurTime.Subtract(_gameTicker.RoundStartTimeSpan);
                _clipboard.SetText((stationTime.ToString("hh\\:mm\\:ss")));
            };

            StationAlertLevelInstructionsButton.OnPressed += _ =>
            {
                _clipboard.SetText(_instructions);
            };




            HideAllViews();
            ToHomeScreen();
        }

        public void UpdateState(PdaUpdateState state)
        {
            FlashLightToggleButton.IsActive = state.FlashlightEnabled;

            if (state.PdaOwnerInfo.ActualOwnerName != null)
            {
                _pdaOwner = state.PdaOwnerInfo.ActualOwnerName;
                PdaOwnerLabel.SetMarkup(Loc.GetString("comp-pda-ui-owner",
                    ("actualOwnerName", FormattedMessage.RemoveMarkupPermissive(_pdaOwner))));
                PdaOwnerLabel.Visible = true;
            }
            else
            {
                PdaOwnerLabel.Visible = false;
            }


            if (state.PdaOwnerInfo.IdOwner != null || state.PdaOwnerInfo.JobTitle != null)
            {
                _owner = state.PdaOwnerInfo.IdOwner ?? Loc.GetString("comp-pda-ui-unknown");
                _jobTitle = state.PdaOwnerInfo.JobTitle ?? Loc.GetString("comp-pda-ui-unassigned");

                IdInfoLabel.SetMarkup(Loc.GetString("comp-pda-ui",
                    ("owner", FormattedMessage.RemoveMarkupPermissive(_owner)),
                    ("jobTitle", FormattedMessage.RemoveMarkupPermissive(_jobTitle))));
            }
            else
            {
                IdInfoLabel.SetMarkup(Loc.GetString("comp-pda-ui-blank"));
            }

            _stationName = state.StationName ?? Loc.GetString("comp-pda-ui-unknown");
            StationNameLabel.SetMarkup(Loc.GetString("comp-pda-ui-station",
                ("station", _stationName)));


            var stationTime = _gameTiming.CurTime.Subtract(_gameTicker.RoundStartTimeSpan);

            StationTimeLabel.SetMarkup(Loc.GetString("comp-pda-ui-station-time",
                ("time", stationTime.ToString("hh\\:mm\\:ss"))));

            var alertColor = state.PdaOwnerInfo.StationAlertColor;
            (_alertLevel, _, _instructions) = _alert.AlertLevelData(state.PdaOwnerInfo.StationAlertLevel);

            StationAlertLevelLabel.SetMarkup(Loc.GetString(
                "comp-pda-ui-station-alert-level",
                ("color", alertColor),
                ("level", _alertLevel)
            ));
            StationAlertLevelInstructions.SetMarkup(Loc.GetString(
                "comp-pda-ui-station-alert-level-instructions",
                ("instructions", _instructions))
            );

            AddressLabel.Text = state.Address?.ToUpper() ?? " - ";

            EjectIdButton.IsActive = state.PdaOwnerInfo.IdOwner != null || state.PdaOwnerInfo.JobTitle != null;
            EjectPenButton.IsActive = state.HasPen;
            EjectPaiButton.IsActive = state.HasPai;
            ActivateMusicButton.Visible = state.CanPlayMusic;
            ShowUplinkButton.Visible = state.HasUplink;
            LockUplinkButton.Visible = state.HasUplink;
        }

        public void UpdateAvailablePrograms(List<(EntityUid, CartridgeComponent)> programs)
        {
            if (programs.Count == 0)
            {
                ProgramList.RemoveAllChildren();

                ProgramList.AddChild(new Label()
                {
                    Text = Loc.GetString("comp-pda-io-no-programs-available"),
                    HorizontalAlignment = HAlignment.Center,
                    VerticalAlignment = VAlignment.Center,
                    VerticalExpand = true
                });

                return;
            }

            if (ProgramList.ChildCount >= 1 && ProgramList.Children[0] is Label label)
            {
                label.Orphan();
            }

            while (ProgramList.ChildCount > programs.Count)
            {
                ProgramList.Children[ProgramList.ChildCount - 1].Orphan();
            }

            for (var i = 0; i < programs.Count; i++)
            {
                var cartridge = programs[i];

                if (i < ProgramList.ChildCount)
                {
                    var currentItem = ProgramList.Children[i];
                    if (currentItem is PdaProgramItem programItem)
                    {
                        programItem.SetCartridge(cartridge);
                        continue;
                    }

                    DebugTools.Assert(i == ProgramList.ChildCount-1);
                    currentItem.Orphan();
                }

                var item = new PdaProgramItem(cartridge);
                item.OnProgramItemPressed += uid => OnProgramItemPressed?.Invoke(uid);
                item.OnUninstallButtonPressed += uid => OnUninstallButtonPressed?.Invoke(uid);
                item.OnInstallButtonPressed += uid => OnInstallButtonPressed?.Invoke(uid);
                ProgramList.AddChild(item);
            }

            //Add a filler item to the last row when it only contains one item
            if (programs.Count % 2 == 0)
                 ProgramList.AddChild(new Control() { HorizontalExpand = true });
        }

        /// <summary>
        /// Changes the current view to the home screen (view 0) and sets the tabs `IsCurrent` flag accordingly
        /// </summary>
        public void ToHomeScreen()
        {
            HomeButton.IsCurrent = true;
            ProgramListButton.IsCurrent = false;
            SettingsButton.IsCurrent = false;
            ProgramTitle.IsCurrent = false;

            ChangeView(HomeView);
        }

        /// <summary>
        /// Hides the program title and close button.
        /// </summary>
        public void HideProgramHeader()
        {
            ProgramTitle.IsCurrent = false;
            ProgramTitle.Visible = false;
            ProgramCloseButton.Visible = false;
            ProgramListButton.Visible = true;
            SettingsButton.Visible = true;
        }

        /// <summary>
        /// Changes the current view to the program content view (view 3), sets the program title and sets the tabs `IsCurrent` flag accordingly
        /// </summary>
        public void ToProgramView(string title)
        {
            HomeButton.IsCurrent = false;
            ProgramListButton.IsCurrent = false;
            SettingsButton.IsCurrent = false;
            ProgramTitle.IsCurrent = false;
            ProgramTitle.IsCurrent = true;
            ProgramTitle.Visible = true;
            ProgramCloseButton.Visible = true;
            ProgramListButton.Visible = false;
            SettingsButton.Visible = false;

            ProgramTitle.LabelText = title;
            ChangeView(ProgramContentView);
        }


        /// <summary>
        /// Changes the current view to the given view number
        /// </summary>
        public void ChangeView(int view)
        {
            if (ViewContainer.ChildCount <= view)
                return;

            ViewContainer.GetChild(_currentView).Visible = false;
            ViewContainer.GetChild(view).Visible = true;
            _currentView = view;
        }

        private void HideAllViews()
        {
            var views = ViewContainer.Children;
            foreach (var view in views)
            {
                view.Visible = false;
            }
        }

        protected override void Draw(DrawingHandleScreen handle)
        {
            base.Draw(handle);

            var stationTime = _gameTiming.CurTime.Subtract(_gameTicker.RoundStartTimeSpan);

            StationTimeLabel.SetMarkup(Loc.GetString("comp-pda-ui-station-time",
                ("time", stationTime.ToString("hh\\:mm\\:ss"))));
        }
    }
}