#nullable enable
using Content.Server.GameObjects.Components.GUI;
using Content.Shared.Chemistry;
using Content.Shared.GameObjects.Components.Chemistry;
using Content.Shared.GameObjects.EntitySystems.ActionBlocker;
using Content.Shared.GameObjects.Verbs;
using Robust.Shared.GameObjects;
using Robust.Shared.Interfaces.GameObjects;
using Robust.Shared.Localization;

namespace Content.Server.GameObjects.Components.Chemistry
{
    [RegisterComponent]
    [ComponentReference(typeof(SharedSolutionContainerComponent))]
    public class SolutionContainerComponent : SharedSolutionContainerComponent
    {
        /// <summary>
        ///     Transfers solution from the held container to the target container.
        /// </summary>
        [Verb]
        private sealed class FillTargetVerb : Verb<SolutionContainerComponent>
        {
            protected override void GetData(IEntity user, SolutionContainerComponent component, VerbData data)
            {
                if (!ActionBlockerSystem.CanInteract(user) ||
                    !user.TryGetComponent<HandsComponent>(out var hands) ||
                    hands.GetActiveHand == null ||
                    hands.GetActiveHand.Owner == component.Owner ||
                    !hands.GetActiveHand.Owner.TryGetComponent<SolutionContainerComponent>(out var solution) ||
                    !solution.CanRemoveSolutions ||
                    !component.CanAddSolutions)
                {
                    data.Visibility = VerbVisibility.Invisible;
                    return;
                }

                var heldEntityName = hands.GetActiveHand.Owner?.Prototype?.Name ?? "<Item>";
                var myName = component.Owner.Prototype?.Name ?? "<Item>";

                var locHeldEntityName = Loc.GetString(heldEntityName);
                var locMyName = Loc.GetString(myName);

                data.Visibility = VerbVisibility.Visible;
                data.Text = Loc.GetString("Transfer liquid from [{0}] to [{1}].", locHeldEntityName, locMyName);
            }

            protected override void Activate(IEntity user, SolutionContainerComponent component)
            {
                if (!user.TryGetComponent<HandsComponent>(out var hands) || hands.GetActiveHand == null)
                {
                    return;
                }

                if (!hands.GetActiveHand.Owner.TryGetComponent<SolutionContainerComponent>(out var handSolutionComp) ||
                    !handSolutionComp.CanRemoveSolutions ||
                    !component.CanAddSolutions)
                {
                    return;
                }

                var transferQuantity = ReagentUnit.Min(component.MaxVolume - component.CurrentVolume, handSolutionComp.CurrentVolume, ReagentUnit.New(10));

                if (transferQuantity <= 0)
                {
                    return;
                }

                var transferSolution = handSolutionComp.SplitSolution(transferQuantity);
                component.TryAddSolution(transferSolution);
            }
        }

        /// <summary>
        ///     Transfers solution from a target container to the held container.
        /// </summary>
        [Verb]
        private sealed class EmptyTargetVerb : Verb<SolutionContainerComponent>
        {
            protected override void GetData(IEntity user, SolutionContainerComponent component, VerbData data)
            {
                if (!ActionBlockerSystem.CanInteract(user) ||
                    !user.TryGetComponent<HandsComponent>(out var hands) ||
                    hands.GetActiveHand == null ||
                    hands.GetActiveHand.Owner == component.Owner ||
                    !hands.GetActiveHand.Owner.TryGetComponent<SolutionContainerComponent>(out var solution) ||
                    !solution.CanAddSolutions ||
                    !component.CanRemoveSolutions)
                {
                    data.Visibility = VerbVisibility.Invisible;
                    return;
                }

                var heldEntityName = hands.GetActiveHand.Owner?.Prototype?.Name ?? "<Item>";
                var myName = component.Owner.Prototype?.Name ?? "<Item>";

                var locHeldEntityName = Loc.GetString(heldEntityName);
                var locMyName = Loc.GetString(myName);

                data.Visibility = VerbVisibility.Visible;
                data.Text = Loc.GetString("Transfer liquid from [{0}] to [{1}].", locMyName, locHeldEntityName);
                return;
            }

            protected override void Activate(IEntity user, SolutionContainerComponent component)
            {
                if (!user.TryGetComponent<HandsComponent>(out var hands) || hands.GetActiveHand == null)
                {
                    return;
                }

                if(!hands.GetActiveHand.Owner.TryGetComponent<SolutionContainerComponent>(out var handSolutionComp) ||
                    !handSolutionComp.CanAddSolutions ||
                    !component.CanRemoveSolutions)
                {
                    return;
                }

                var transferQuantity = ReagentUnit.Min(handSolutionComp.MaxVolume - handSolutionComp.CurrentVolume, component.CurrentVolume, ReagentUnit.New(10));

                if (transferQuantity <= 0)
                {
                    return;
                }

                var transferSolution = component.SplitSolution(transferQuantity);
                handSolutionComp.TryAddSolution(transferSolution);
            }
        }
    }
}