using Content.Shared.Audio.Jukebox;
using Robust.Client.Animations;
using Robust.Client.GameObjects;
using Robust.Shared.Prototypes;

namespace Content.Client.Audio.Jukebox;


public sealed class JukeboxSystem : SharedJukeboxSystem
{
    [Dependency] private readonly IPrototypeManager _protoManager = default!;
    [Dependency] private readonly AnimationPlayerSystem _animationPlayer = default!;
    [Dependency] private readonly SharedAppearanceSystem _appearanceSystem = default!;

    public override void Initialize()
    {
        base.Initialize();
        SubscribeLocalEvent<JukeboxComponent, AppearanceChangeEvent>(OnAppearanceChange);
        SubscribeLocalEvent<JukeboxComponent, AnimationCompletedEvent>(OnAnimationCompleted);
        SubscribeLocalEvent<JukeboxComponent, AfterAutoHandleStateEvent>(OnJukeboxAfterState);

        _protoManager.PrototypesReloaded += OnProtoReload;
    }

    public override void Shutdown()
    {
        base.Shutdown();
        _protoManager.PrototypesReloaded -= OnProtoReload;
    }

    private void OnProtoReload(PrototypesReloadedEventArgs obj)
    {
        if (!obj.WasModified<JukeboxPrototype>())
            return;

        var query = AllEntityQuery<JukeboxComponent, UserInterfaceComponent>();

        while (query.MoveNext(out _, out var ui))
        {
            if (!ui.OpenInterfaces.TryGetValue(JukeboxUiKey.Key, out var baseBui) ||
                baseBui is not JukeboxBoundUserInterface bui)
            {
                continue;
            }

            bui.PopulateMusic();
        }
    }

    private void OnJukeboxAfterState(Entity<JukeboxComponent> ent, ref AfterAutoHandleStateEvent args)
    {
        if (!TryComp(ent, out UserInterfaceComponent? ui))
            return;

        if (!ui.OpenInterfaces.TryGetValue(JukeboxUiKey.Key, out var baseBui) ||
            baseBui is not JukeboxBoundUserInterface bui)
        {
            return;
        }

        bui.Reload();
    }

    private void OnAnimationCompleted(EntityUid uid, JukeboxComponent component, AnimationCompletedEvent args)
    {
        if (!TryComp<SpriteComponent>(uid, out var sprite))
            return;

        if (!TryComp<AppearanceComponent>(uid, out var appearance) ||
            !_appearanceSystem.TryGetData<JukeboxVisualState>(uid, JukeboxVisuals.VisualState, out var visualState, appearance))
        {
            visualState = JukeboxVisualState.On;
        }

        UpdateAppearance(uid, visualState, component, sprite);
    }

    private void OnAppearanceChange(EntityUid uid, JukeboxComponent component, ref AppearanceChangeEvent args)
    {
        if (args.Sprite == null)
            return;

        if (!args.AppearanceData.TryGetValue(JukeboxVisuals.VisualState, out var visualStateObject) ||
            visualStateObject is not JukeboxVisualState visualState)
        {
            visualState = JukeboxVisualState.On;
        }

        UpdateAppearance(uid, visualState, component, args.Sprite);
    }

    private void UpdateAppearance(EntityUid uid, JukeboxVisualState visualState, JukeboxComponent component, SpriteComponent sprite)
    {
        SetLayerState(JukeboxVisualLayers.Base, component.OffState, sprite);

        switch (visualState)
        {
            case JukeboxVisualState.On:
                SetLayerState(JukeboxVisualLayers.Base, component.OnState, sprite);
                break;

            case JukeboxVisualState.Off:
                SetLayerState(JukeboxVisualLayers.Base, component.OffState, sprite);
                break;

            case JukeboxVisualState.Select:
                PlayAnimation(uid, JukeboxVisualLayers.Base, component.SelectState, 1.0f, sprite);
                break;
        }
    }

    private void PlayAnimation(EntityUid uid, JukeboxVisualLayers layer, string? state, float animationTime, SpriteComponent sprite)
    {
        if (string.IsNullOrEmpty(state))
            return;

        if (!_animationPlayer.HasRunningAnimation(uid, state))
        {
            var animation = GetAnimation(layer, state, animationTime);
            sprite.LayerSetVisible(layer, true);
            _animationPlayer.Play(uid, animation, state);
        }
    }

    private static Animation GetAnimation(JukeboxVisualLayers layer, string state, float animationTime)
    {
        return new Animation
        {
            Length = TimeSpan.FromSeconds(animationTime),
            AnimationTracks =
                {
                    new AnimationTrackSpriteFlick
                    {
                        LayerKey = layer,
                        KeyFrames =
                        {
                            new AnimationTrackSpriteFlick.KeyFrame(state, 0f)
                        }
                    }
                }
        };
    }

    private void SetLayerState(JukeboxVisualLayers layer, string? state, SpriteComponent sprite)
    {
        if (string.IsNullOrEmpty(state))
            return;

        sprite.LayerSetVisible(layer, true);
        sprite.LayerSetAutoAnimated(layer, true);
        sprite.LayerSetState(layer, state);
    }
}