using Content.Shared.DoAfter;
using Content.Shared.Humanoid;
using Content.Shared.Humanoid.Markings;
using Content.Shared.Interaction;
using Content.Shared.UserInterface;
using Robust.Shared.Serialization;

namespace Content.Shared.MagicMirror;

public abstract class SharedMagicMirrorSystem : EntitySystem
{
    [Dependency] private readonly SharedInteractionSystem _interaction = default!;
    [Dependency] protected readonly SharedUserInterfaceSystem _uiSystem = default!;

    public override void Initialize()
    {
        base.Initialize();
        SubscribeLocalEvent<MagicMirrorComponent, BeforeActivatableUIOpenEvent>(OnBeforeUIOpen);
        SubscribeLocalEvent<MagicMirrorComponent, BoundUserInterfaceCheckRangeEvent>(OnMirrorRangeCheck);
    }

    private void OnMirrorRangeCheck(EntityUid uid, MagicMirrorComponent component, ref BoundUserInterfaceCheckRangeEvent args)
    {
        if (!Exists(component.Target) || !_interaction.InRangeUnobstructed(uid, component.Target.Value))
        {
            args.Result = BoundUserInterfaceRangeResult.Fail;
        }
    }

    private void OnBeforeUIOpen(Entity<MagicMirrorComponent> ent, ref BeforeActivatableUIOpenEvent args)
    {
        ent.Comp.Target ??= args.User;
        UpdateInterface(ent, args.User, ent);
    }

    protected void UpdateInterface(EntityUid mirrorUid, EntityUid targetUid, MagicMirrorComponent component)
    {
        if (!TryComp<HumanoidAppearanceComponent>(targetUid, out var humanoid))
            return;

        var hair = humanoid.MarkingSet.TryGetCategory(MarkingCategories.Hair, out var hairMarkings)
            ? new List<Marking>(hairMarkings)
            : new();

        var facialHair = humanoid.MarkingSet.TryGetCategory(MarkingCategories.FacialHair, out var facialHairMarkings)
            ? new List<Marking>(facialHairMarkings)
            : new();

        var state = new MagicMirrorUiState(
            humanoid.Species,
            hair,
            humanoid.MarkingSet.PointsLeft(MarkingCategories.Hair) + hair.Count,
            facialHair,
            humanoid.MarkingSet.PointsLeft(MarkingCategories.FacialHair) + facialHair.Count);

        // TODO: Component states
        component.Target = targetUid;
        _uiSystem.SetUiState(mirrorUid, MagicMirrorUiKey.Key, state);
        Dirty(mirrorUid, component);
    }
}

[Serializable, NetSerializable]
public enum MagicMirrorUiKey : byte
{
    Key
}

[Serializable, NetSerializable]
public enum MagicMirrorCategory : byte
{
    Hair,
    FacialHair
}

[Serializable, NetSerializable]
public sealed class MagicMirrorSelectMessage : BoundUserInterfaceMessage
{
    public MagicMirrorSelectMessage(MagicMirrorCategory category, string marking, int slot)
    {
        Category = category;
        Marking = marking;
        Slot = slot;
    }

    public MagicMirrorCategory Category { get; }
    public string Marking { get; }
    public int Slot { get; }
}

[Serializable, NetSerializable]
public sealed class MagicMirrorChangeColorMessage : BoundUserInterfaceMessage
{
    public MagicMirrorChangeColorMessage(MagicMirrorCategory category, List<Color> colors, int slot)
    {
        Category = category;
        Colors = colors;
        Slot = slot;
    }

    public MagicMirrorCategory Category { get; }
    public List<Color> Colors { get; }
    public int Slot { get; }
}

[Serializable, NetSerializable]
public sealed class MagicMirrorRemoveSlotMessage : BoundUserInterfaceMessage
{
    public MagicMirrorRemoveSlotMessage(MagicMirrorCategory category, int slot)
    {
        Category = category;
        Slot = slot;
    }

    public MagicMirrorCategory Category { get; }
    public int Slot { get; }
}

[Serializable, NetSerializable]
public sealed class MagicMirrorSelectSlotMessage : BoundUserInterfaceMessage
{
    public MagicMirrorSelectSlotMessage(MagicMirrorCategory category, int slot)
    {
        Category = category;
        Slot = slot;
    }

    public MagicMirrorCategory Category { get; }
    public int Slot { get; }
}

[Serializable, NetSerializable]
public sealed class MagicMirrorAddSlotMessage : BoundUserInterfaceMessage
{
    public MagicMirrorAddSlotMessage(MagicMirrorCategory category)
    {
        Category = category;
    }

    public MagicMirrorCategory Category { get; }
}

[Serializable, NetSerializable]
public sealed class MagicMirrorUiState : BoundUserInterfaceState
{
    public MagicMirrorUiState(string species, List<Marking> hair, int hairSlotTotal, List<Marking> facialHair, int facialHairSlotTotal)
    {
        Species = species;
        Hair = hair;
        HairSlotTotal = hairSlotTotal;
        FacialHair = facialHair;
        FacialHairSlotTotal = facialHairSlotTotal;
    }

    public NetEntity Target;

    public string Species;

    public List<Marking> Hair;
    public int HairSlotTotal;

    public List<Marking> FacialHair;
    public int FacialHairSlotTotal;
}

[Serializable, NetSerializable]
public sealed partial class MagicMirrorRemoveSlotDoAfterEvent : DoAfterEvent
{
    public override DoAfterEvent Clone() => this;
    public MagicMirrorCategory Category;
    public int Slot;
}

[Serializable, NetSerializable]
public sealed partial class MagicMirrorAddSlotDoAfterEvent : DoAfterEvent
{
    public override DoAfterEvent Clone() => this;
    public MagicMirrorCategory Category;
}

[Serializable, NetSerializable]
public sealed partial class MagicMirrorSelectDoAfterEvent : DoAfterEvent
{
    public MagicMirrorCategory Category;
    public int Slot;
    public string Marking = string.Empty;

    public override DoAfterEvent Clone() => this;
}

[Serializable, NetSerializable]
public sealed partial class MagicMirrorChangeColorDoAfterEvent : DoAfterEvent
{
    public override DoAfterEvent Clone() => this;
    public MagicMirrorCategory Category;
    public int Slot;
    public List<Color> Colors = new List<Color>();
}