// SPDX-FileCopyrightText: 2025 Aiden <28298836+Aidenkrz@users.noreply.github.com>
// SPDX-FileCopyrightText: 2025 Aviu00 <93730715+Aviu00@users.noreply.github.com>
// SPDX-FileCopyrightText: 2025 Misandry <mary@thughunt.ing>
// SPDX-FileCopyrightText: 2025 gus <august.eymann@gmail.com>
//
// SPDX-License-Identifier: AGPL-3.0-or-later

using Content.Shared._Shitcode.Wizard.ScryingOrb;
using Content.Shared.Eye;
using Content.Shared.Ghost;
using Content.Shared.Hands;
using Content.Shared.Interaction;
using Content.Shared.Inventory.Events;
using Content.Shared.Mind;
using Content.Shared.Verbs;
using Robust.Shared.Prototypes;

namespace Content.Server._Shitcode.Wizard.Systems;

public sealed class ScryingOrbSystem : SharedScryingOrbSystem
{
    [Dependency] private readonly SharedTransformSystem _transformSystem = default!;
    [Dependency] private readonly SharedMindSystem _mind = default!;
    [Dependency] private readonly MetaDataSystem _meta = default!;
    [Dependency] private readonly SharedEyeSystem _eye = default!;
    [Dependency] private readonly SharedGhostSystem _ghost = default!;

    private static readonly EntProtoId ObserverProto = "MobObserverWizard";

    public override void Initialize()
    {
        base.Initialize();

        SubscribeLocalEvent<ScryingOrbComponent, GetVerbsEvent<InteractionVerb>>(OnGetInteractionVerb);
        SubscribeLocalEvent<ScryingOrbComponent, ActivateInWorldEvent>(OnActivate);
        SubscribeLocalEvent<ScryingOrbComponent, GotEquippedHandEvent>(OnEquipHand);
        SubscribeLocalEvent<ScryingOrbComponent, GotEquippedEvent>(OnEquip);
        SubscribeLocalEvent<ScryingOrbComponent, GotUnequippedHandEvent>(OnUnequipHand);
        SubscribeLocalEvent<ScryingOrbComponent, GotUnequippedEvent>(OnUnequip);
    }

    private void OnUnequip(Entity<ScryingOrbComponent> ent, ref GotUnequippedEvent args)
    {
        AttemptDisableXRay(args.Equipee);
    }

    private void OnUnequipHand(Entity<ScryingOrbComponent> ent, ref GotUnequippedHandEvent args)
    {
        AttemptDisableXRay(args.User);
    }

    private void OnEquip(Entity<ScryingOrbComponent> ent, ref GotEquippedEvent args)
    {
        if (!TryComp(args.Equipee, out EyeComponent? eye))
            return;

        _eye.SetVisibilityMask(args.Equipee, eye.VisibilityMask | (int) VisibilityFlags.Ghost, eye);
    }

    private void OnEquipHand(Entity<ScryingOrbComponent> ent, ref GotEquippedHandEvent args)
    {
        if (!TryComp(args.User, out EyeComponent? eye))
            return;

        _eye.SetVisibilityMask(args.User, eye.VisibilityMask | (int) VisibilityFlags.Ghost, eye);
    }

    private void AttemptDisableXRay(EntityUid uid)
    {
        if (!TryComp(uid, out EyeComponent? eye))
            return;

        if (IsScryingOrbEquipped(uid))
            return;

        _eye.SetVisibilityMask(uid, eye.VisibilityMask & (int) ~VisibilityFlags.Ghost, eye);
        _eye.SetDrawFov(uid, true, eye);
        _eye.SetDrawLight((uid, eye), true);
    }

    private void OnActivate(Entity<ScryingOrbComponent> ent, ref ActivateInWorldEvent args)
    {
        if (!args.Complex || HasComp<GhostComponent>(args.User))
            return;

        Ghost(args.User);
    }

    private void OnGetInteractionVerb(Entity<ScryingOrbComponent> ent, ref GetVerbsEvent<InteractionVerb> args)
    {
        if (!args.CanAccess || !args.CanInteract || HasComp<GhostComponent>(args.User))
            return;

        var user = args.User;
        args.Verbs.Add(new()
        {
            Act = () =>
            {
                Ghost(user);
            },
            Message = Loc.GetString("scrying-orb-verb-message"),
            Text = Loc.GetString("scrying-orb-verb-text"),
        });
    }

    private void Ghost(EntityUid user)
    {
        if (!_mind.TryGetMind(user, out var mind, out var mindComp))
            return;

        var ghost = Spawn(ObserverProto, Transform(user).Coordinates);
        _transformSystem.AttachToGridOrMap(ghost);

        if (!string.IsNullOrWhiteSpace(mindComp.CharacterName))
            _meta.SetEntityName(ghost, mindComp.CharacterName);
        else if (!string.IsNullOrWhiteSpace(mindComp.Session?.Name))
            _meta.SetEntityName(ghost, mindComp.Session.Name);

        _mind.Visit(mind, ghost, mindComp);
        _ghost.SetCanReturnToBody(Comp<GhostComponent>(ghost), true);
    }
}