using Content.Server.Shuttles.Components;
using Content.Shared.CCVar;
using Content.Shared.Shuttles.BUIStates;
using Content.Shared.Shuttles.Components;
using Content.Shared.Shuttles.Events;

namespace Content.Server.Shuttles.Systems;

public sealed partial class ShuttleSystem
{
    private void InitializeIFF()
    {
        SubscribeLocalEvent<IFFConsoleComponent, AnchorStateChangedEvent>(OnIFFConsoleAnchor);
        SubscribeLocalEvent<IFFConsoleComponent, IFFShowIFFMessage>(OnIFFShow);
        SubscribeLocalEvent<IFFConsoleComponent, IFFShowVesselMessage>(OnIFFShowVessel);
        SubscribeLocalEvent<GridSplitEvent>(OnGridSplit);
    }

    private void OnGridSplit(ref GridSplitEvent ev)
    {
        var splitMass = _cfg.GetCVar(CCVars.HideSplitGridsUnder);

        if (splitMass < 0)
            return;

        foreach (var grid in ev.NewGrids)
        {
            if (!_physicsQuery.TryGetComponent(grid, out var physics) ||
                physics.Mass > splitMass)
            {
                continue;
            }

            AddIFFFlag(grid, IFFFlags.HideLabel);
        }
    }

    private void OnIFFShow(EntityUid uid, IFFConsoleComponent component, IFFShowIFFMessage args)
    {
        if (!TryComp(uid, out TransformComponent? xform) || xform.GridUid == null ||
            (component.AllowedFlags & IFFFlags.HideLabel) == 0x0)
        {
            return;
        }

        if (!args.Show)
        {
            AddIFFFlag(xform.GridUid.Value, IFFFlags.HideLabel);
        }
        else
        {
            RemoveIFFFlag(xform.GridUid.Value, IFFFlags.HideLabel);
        }
    }

    private void OnIFFShowVessel(EntityUid uid, IFFConsoleComponent component, IFFShowVesselMessage args)
    {
        if (!TryComp(uid, out TransformComponent? xform) || xform.GridUid == null ||
            (component.AllowedFlags & IFFFlags.Hide) == 0x0)
        {
            return;
        }

        if (!args.Show)
        {
            AddIFFFlag(xform.GridUid.Value, IFFFlags.Hide);
        }
        else
        {
            RemoveIFFFlag(xform.GridUid.Value, IFFFlags.Hide);
        }
    }

    private void OnIFFConsoleAnchor(EntityUid uid, IFFConsoleComponent component, ref AnchorStateChangedEvent args)
    {
        // If we anchor / re-anchor then make sure flags up to date.
        if (!args.Anchored ||
            !TryComp(uid, out TransformComponent? xform) ||
            !TryComp<IFFComponent>(xform.GridUid, out var iff))
        {
            _uiSystem.SetUiState(uid, IFFConsoleUiKey.Key, new IFFConsoleBoundUserInterfaceState()
            {
                AllowedFlags = component.AllowedFlags,
                Flags = IFFFlags.None,
            });
        }
        else
        {
            _uiSystem.SetUiState(uid, IFFConsoleUiKey.Key, new IFFConsoleBoundUserInterfaceState()
            {
                AllowedFlags = component.AllowedFlags,
                Flags = iff.Flags,
            });
        }
    }

    protected override void UpdateIFFInterfaces(EntityUid gridUid, IFFComponent component)
    {
        base.UpdateIFFInterfaces(gridUid, component);

        var query = AllEntityQuery<IFFConsoleComponent, TransformComponent>();
        while (query.MoveNext(out var uid, out var comp, out var xform))
        {
            if (xform.GridUid != gridUid)
                continue;

            _uiSystem.SetUiState(uid, IFFConsoleUiKey.Key, new IFFConsoleBoundUserInterfaceState()
            {
                AllowedFlags = comp.AllowedFlags,
                Flags = component.Flags,
            });
        }
    }
}