using Content.Server.Body.Components;
using Content.Server.Body.Systems;
using Content.Server.Chemistry.Components.SolutionManager;
using Content.Server.Chemistry.EntitySystems;
using Content.Server.Fluids.EntitySystems;
using Content.Server.Forensics;
using Content.Server.Nutrition.Components;
using Content.Server.Popups;
using Content.Shared.Administration.Logs;
using Content.Shared.Body.Components;
using Content.Shared.Chemistry;
using Content.Shared.Chemistry.Components;
using Content.Shared.Chemistry.Reagent;
using Content.Shared.Database;
using Content.Shared.DoAfter;
using Content.Shared.Examine;
using Content.Shared.FixedPoint;
using Content.Shared.IdentityManagement;
using Content.Shared.Interaction;
using Content.Shared.Interaction.Events;
using Content.Shared.Mobs.Components;
using Content.Shared.Mobs.Systems;
using Content.Shared.Nutrition;
using Content.Shared.Nutrition.Components;
using Content.Shared.Throwing;
using Content.Shared.Verbs;
using JetBrains.Annotations;
using Robust.Shared.Audio;
using Robust.Shared.Player;
using Robust.Shared.Random;
using Robust.Shared.Utility;

namespace Content.Server.Nutrition.EntitySystems
{
    [UsedImplicitly]
    public sealed class DrinkSystem : EntitySystem
    {
        [Dependency] private readonly FoodSystem _foodSystem = default!;
        [Dependency] private readonly FlavorProfileSystem _flavorProfileSystem = default!;
        [Dependency] private readonly IRobustRandom _random = default!;
        [Dependency] private readonly SolutionContainerSystem _solutionContainerSystem = default!;
        [Dependency] private readonly PopupSystem _popupSystem = default!;
        [Dependency] private readonly BodySystem _bodySystem = default!;
        [Dependency] private readonly StomachSystem _stomachSystem = default!;
        [Dependency] private readonly SharedDoAfterSystem _doAfterSystem = default!;
        [Dependency] private readonly ISharedAdminLogManager _adminLogger = default!;
        [Dependency] private readonly MobStateSystem _mobStateSystem = default!;
        [Dependency] private readonly PuddleSystem _puddleSystem = default!;
        [Dependency] private readonly SharedInteractionSystem _interactionSystem = default!;
        [Dependency] private readonly SharedAppearanceSystem _appearanceSystem = default!;
        [Dependency] private readonly SharedAudioSystem _audio = default!;
        [Dependency] private readonly ReactiveSystem _reaction = default!;

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

            // TODO add InteractNoHandEvent for entities like mice.
            SubscribeLocalEvent<DrinkComponent, SolutionChangedEvent>(OnSolutionChange);
            SubscribeLocalEvent<DrinkComponent, ComponentInit>(OnDrinkInit);
            SubscribeLocalEvent<DrinkComponent, LandEvent>(HandleLand);
            SubscribeLocalEvent<DrinkComponent, UseInHandEvent>(OnUse);
            SubscribeLocalEvent<DrinkComponent, AfterInteractEvent>(AfterInteract);
            SubscribeLocalEvent<DrinkComponent, GetVerbsEvent<AlternativeVerb>>(AddDrinkVerb);
            SubscribeLocalEvent<DrinkComponent, ExaminedEvent>(OnExamined);
            SubscribeLocalEvent<DrinkComponent, SolutionTransferAttemptEvent>(OnTransferAttempt);
            SubscribeLocalEvent<DrinkComponent, ConsumeDoAfterEvent>(OnDoAfter);
        }

        public bool IsEmpty(EntityUid uid, DrinkComponent? component = null)
        {
            if(!Resolve(uid, ref component))
                return true;

            return _solutionContainerSystem.DrainAvailable(uid) <= 0;
        }

        private void OnExamined(EntityUid uid, DrinkComponent component, ExaminedEvent args)
        {
            if (!component.Opened || !args.IsInDetailsRange)
                return;

            var color = IsEmpty(uid, component) ? "gray" : "yellow";
            var openedText =
                Loc.GetString(IsEmpty(uid, component) ? "drink-component-on-examine-is-empty" : "drink-component-on-examine-is-opened");
            args.Message.AddMarkup($"\n{Loc.GetString("drink-component-on-examine-details-text", ("colorName", color), ("text", openedText))}");
            if (!IsEmpty(uid, component))
            {
                if (TryComp<ExaminableSolutionComponent>(uid, out var comp))
                {
                    //provide exact measurement for beakers
                    args.Message.AddMarkup($" - {Loc.GetString("drink-component-on-examine-exact-volume", ("amount", _solutionContainerSystem.DrainAvailable(uid)))}");
                }
                else
                {
                    //general approximation
                    var remainingString = (int) _solutionContainerSystem.PercentFull(uid) switch
                    {
                        100 => "drink-component-on-examine-is-full",
                        > 66 => "drink-component-on-examine-is-mostly-full",
                        > 33 => HalfEmptyOrHalfFull(args),
                        _ => "drink-component-on-examine-is-mostly-empty",
                    };
                    args.Message.AddMarkup($" - {Loc.GetString(remainingString)}");
                }
            }
        }

        private void SetOpen(EntityUid uid, bool opened = false, DrinkComponent? component = null)
        {
            if(!Resolve(uid, ref component))
                return;

            if (opened == component.Opened)
                return;

            component.Opened = opened;

            if (!_solutionContainerSystem.TryGetSolution(uid, component.SolutionName, out _))
                return;

            if (EntityManager.TryGetComponent<AppearanceComponent>(uid, out var appearance))
            {
                _appearanceSystem.SetData(uid, DrinkCanStateVisual.Opened, opened, appearance);
            }
        }

        private void AfterInteract(EntityUid uid, DrinkComponent component, AfterInteractEvent args)
        {
            if (args.Handled || args.Target == null || !args.CanReach)
                return;

            args.Handled = TryDrink(args.User, args.Target.Value, component, uid);
        }

        private void OnUse(EntityUid uid, DrinkComponent component, UseInHandEvent args)
        {
            if (args.Handled)
                return;

            if (!component.Opened)
            {
                //Do the opening stuff like playing the sounds.
                _audio.PlayPvs(_audio.GetSound(component.OpenSounds), args.User);

                SetOpen(uid, true, component);
                return;
            }

            args.Handled = TryDrink(args.User, args.User, component, uid);
        }

        private void HandleLand(EntityUid uid, DrinkComponent component, ref LandEvent args)
        {
            if (component.Pressurized &&
                !component.Opened &&
                _random.Prob(0.25f) &&
                _solutionContainerSystem.TryGetDrainableSolution(uid, out var interactions))
            {
                component.Opened = true;
                UpdateAppearance(component);

                var solution = _solutionContainerSystem.Drain(uid, interactions, interactions.Volume);
                _puddleSystem.TrySpillAt(uid, solution, out _);

                _audio.PlayPvs(_audio.GetSound(component.BurstSound), uid, AudioParams.Default.WithVolume(-4));
            }
        }

        private void OnDrinkInit(EntityUid uid, DrinkComponent component, ComponentInit args)
        {
            SetOpen(uid, component.DefaultToOpened, component);

            if (EntityManager.TryGetComponent(uid, out DrainableSolutionComponent? existingDrainable))
            {
                // Beakers have Drink component but they should use the existing Drainable
                component.SolutionName = existingDrainable.Solution;
            }
            else
            {
                _solutionContainerSystem.EnsureSolution(uid, component.SolutionName);
            }

            UpdateAppearance(component);

            if (TryComp(uid, out RefillableSolutionComponent? refillComp))
                refillComp.Solution = component.SolutionName;

            if (TryComp(uid, out DrainableSolutionComponent? drainComp))
                drainComp.Solution = component.SolutionName;
        }

        private void OnSolutionChange(EntityUid uid, DrinkComponent component, SolutionChangedEvent args)
        {
            UpdateAppearance(component);
        }

        public void UpdateAppearance(DrinkComponent component)
        {
            if (!EntityManager.TryGetComponent((component).Owner, out AppearanceComponent? appearance) ||
                !EntityManager.HasComponent<SolutionContainerManagerComponent>((component).Owner))
            {
                return;
            }

            var drainAvailable = _solutionContainerSystem.DrainAvailable((component).Owner);
            _appearanceSystem.SetData(component.Owner, FoodVisuals.Visual, drainAvailable.Float(), appearance);
            _appearanceSystem.SetData(component.Owner, DrinkCanStateVisual.Opened, component.Opened, appearance);
        }

        private void OnTransferAttempt(EntityUid uid, DrinkComponent component, SolutionTransferAttemptEvent args)
        {
            if (!component.Opened)
            {
                args.Cancel(Loc.GetString("drink-component-try-use-drink-not-open",
                    ("owner", EntityManager.GetComponent<MetaDataComponent>(component.Owner).EntityName)));
            }
        }

        private bool TryDrink(EntityUid user, EntityUid target, DrinkComponent drink, EntityUid item)
        {
            if (!EntityManager.HasComponent<BodyComponent>(target))
                return false;

            if (!drink.Opened)
            {
                _popupSystem.PopupEntity(Loc.GetString("drink-component-try-use-drink-not-open",
                    ("owner", EntityManager.GetComponent<MetaDataComponent>(item).EntityName)), item, user);
                return true;
            }

            if (!_solutionContainerSystem.TryGetDrainableSolution(item, out var drinkSolution) ||
                drinkSolution.Volume <= 0)
            {
                _popupSystem.PopupEntity(Loc.GetString("drink-component-try-use-drink-is-empty",
                    ("entity", EntityManager.GetComponent<MetaDataComponent>(item).EntityName)), item, user);
                return true;
            }

            if (drinkSolution.Name == null)
                return false;

            if (_foodSystem.IsMouthBlocked(target, user))
                return true;

            if (!_interactionSystem.InRangeUnobstructed(user, item, popup: true))
                return true;

            var forceDrink = user != target;

            if (forceDrink)
            {
                var userName = Identity.Entity(user, EntityManager);

                _popupSystem.PopupEntity(Loc.GetString("drink-component-force-feed", ("user", userName)),
                    user, target);

                // logging
                _adminLogger.Add(LogType.ForceFeed, LogImpact.Medium, $"{ToPrettyString(user):user} is forcing {ToPrettyString(target):target} to drink {ToPrettyString(item):drink} {SolutionContainerSystem.ToPrettyString(drinkSolution)}");
            }
            else
            {
                // log voluntary drinking
                _adminLogger.Add(LogType.Ingestion, LogImpact.Low, $"{ToPrettyString(target):target} is drinking {ToPrettyString(item):drink} {SolutionContainerSystem.ToPrettyString(drinkSolution)}");
            }

            var flavors = _flavorProfileSystem.GetLocalizedFlavorsMessage(user, drinkSolution);

            var doAfterEventArgs = new DoAfterArgs(
                user,
                forceDrink ? drink.ForceFeedDelay : drink.Delay,
                new ConsumeDoAfterEvent(drinkSolution.Name, flavors),
                eventTarget: item,
                target: target,
                used: item)
            {
                BreakOnUserMove = forceDrink,
                BreakOnDamage = true,
                BreakOnTargetMove = forceDrink,
                MovementThreshold = 0.01f,
                DistanceThreshold = 1.0f,
                // Mice and the like can eat without hands.
                // TODO maybe set this based on some CanEatWithoutHands event or component?
                NeedHand = forceDrink,
                CancelDuplicate = false,
            };

            _doAfterSystem.TryStartDoAfter(doAfterEventArgs);
            return true;
        }

        /// <summary>
        ///     Raised directed at a victim when someone has force fed them a drink.
        /// </summary>
        private void OnDoAfter(EntityUid uid, DrinkComponent component, ConsumeDoAfterEvent args)
        {
            if (args.Handled || args.Cancelled || component.Deleted)
                return;

            if (!TryComp<BodyComponent>(args.Target, out var body))
                return;

            if (!_solutionContainerSystem.TryGetSolution(args.Used, args.Solution, out var solution))
                return;

            // TODO this should really be checked every tick.
            if (_foodSystem.IsMouthBlocked(args.Target.Value))
                return;

            // TODO this should really be checked every tick.
            if (!_interactionSystem.InRangeUnobstructed(args.User, args.Target.Value))
                return;

            var transferAmount = FixedPoint2.Min(component.TransferAmount, solution.Volume);
            var drained = _solutionContainerSystem.Drain(uid, solution, transferAmount);
            var forceDrink = args.User != args.Target;

            args.Handled = true;
            if (transferAmount <= 0)
                return;

            if (!_bodySystem.TryGetBodyOrganComponents<StomachComponent>(args.Target.Value, out var stomachs, body))
            {
                _popupSystem.PopupEntity(forceDrink ? Loc.GetString("drink-component-try-use-drink-cannot-drink-other") : Loc.GetString("drink-component-try-use-drink-had-enough"), args.Target.Value, args.User);

                if (HasComp<RefillableSolutionComponent>(args.Target.Value))
                {
                    _puddleSystem.TrySpillAt(args.User, drained, out _);
                    return;
                }

                _solutionContainerSystem.Refill(args.Target.Value, solution, drained);
                return;
            }

            var firstStomach = stomachs.FirstOrNull(stomach => _stomachSystem.CanTransferSolution(stomach.Comp.Owner, drained));

            //All stomachs are full or can't handle whatever solution we have.
            if (firstStomach == null)
            {
                _popupSystem.PopupEntity(Loc.GetString("drink-component-try-use-drink-had-enough"), args.Target.Value, args.Target.Value);

                if (forceDrink)
                {
                    _popupSystem.PopupEntity(Loc.GetString("drink-component-try-use-drink-had-enough-other"), args.Target.Value, args.User);
                    _puddleSystem.TrySpillAt(args.Target.Value, drained, out _);
                }
                else
                    _solutionContainerSystem.TryAddSolution(uid, solution, drained);

                return;
            }

            var flavors = args.FlavorMessage;

            if (forceDrink)
            {
                var targetName = Identity.Entity(args.Target.Value, EntityManager);
                var userName = Identity.Entity(args.User, EntityManager);

                _popupSystem.PopupEntity(Loc.GetString("drink-component-force-feed-success", ("user", userName), ("flavors", flavors)), args.Target.Value, args.Target.Value);

                _popupSystem.PopupEntity(
                    Loc.GetString("drink-component-force-feed-success-user", ("target", targetName)),
                    args.User, args.User);

                // log successful forced drinking
                _adminLogger.Add(LogType.ForceFeed, LogImpact.Medium, $"{ToPrettyString(uid):user} forced {ToPrettyString(args.User):target} to drink {ToPrettyString(component.Owner):drink}");
            }
            else
            {
                _popupSystem.PopupEntity(
                    Loc.GetString("drink-component-try-use-drink-success-slurp-taste", ("flavors", flavors)), args.User,
                    args.User);
                _popupSystem.PopupEntity(
                    Loc.GetString("drink-component-try-use-drink-success-slurp"), args.User, Filter.PvsExcept(args.User), true);

                // log successful voluntary drinking
                _adminLogger.Add(LogType.Ingestion, LogImpact.Low, $"{ToPrettyString(args.User):target} drank {ToPrettyString(uid):drink}");
            }

            _audio.PlayPvs(_audio.GetSound(component.UseSound), args.Target.Value, AudioParams.Default.WithVolume(-2f));

            _reaction.DoEntityReaction(args.Target.Value, solution, ReactionMethod.Ingestion);
            //TODO: Grab the stomach UIDs somehow without using Owner
            _stomachSystem.TryTransferSolution(firstStomach.Value.Comp.Owner, drained, firstStomach.Value.Comp);

            var comp = EnsureComp<ForensicsComponent>(uid);
            if (TryComp<DnaComponent>(args.Target, out var dna))
                comp.DNAs.Add(dna.DNA);

            if (!forceDrink && solution.Volume > 0)
                args.Repeat = true;
        }

        private void AddDrinkVerb(EntityUid uid, DrinkComponent component, GetVerbsEvent<AlternativeVerb> ev)
        {
            if (uid == ev.User ||
                !ev.CanInteract ||
                !ev.CanAccess ||
                !EntityManager.TryGetComponent(ev.User, out BodyComponent? body) ||
                !_bodySystem.TryGetBodyOrganComponents<StomachComponent>(ev.User, out var stomachs, body))
                return;

            if (EntityManager.TryGetComponent<MobStateComponent>(uid, out var mobState) && _mobStateSystem.IsAlive(uid, mobState))
                return;

            AlternativeVerb verb = new()
            {
                Act = () =>
                {
                    TryDrink(ev.User, ev.User, component, uid);
                },
                Icon = new SpriteSpecifier.Texture(new ResourcePath("/Textures/Interface/VerbIcons/drink.svg.192dpi.png")),
                Text = Loc.GetString("drink-system-verb-drink"),
                Priority = 2
            };

            ev.Verbs.Add(verb);
        }

        // some see half empty, and others see half full
        private string HalfEmptyOrHalfFull(ExaminedEvent args)
        {
            string remainingString = "drink-component-on-examine-is-half-full";

            if (TryComp<MetaDataComponent>(args.Examiner, out var examiner) && examiner.EntityName.Length > 0
                && string.Compare(examiner.EntityName.Substring(0, 1), "m", StringComparison.InvariantCultureIgnoreCase) > 0)
                remainingString = "drink-component-on-examine-is-half-empty";

            return remainingString;
        }
    }
}