using System.Linq;
using Content.Server.Atmos.EntitySystems;
using Content.Server.Chat.Systems;
using Content.Server.Ghost.Components;
using Content.Shared.Chat;
using Content.Shared.Ghost.Components;
using Content.Shared.Light.Components;
using Content.Shared.Random.Helpers;
using Robust.Server.Audio;
using Robust.Shared.Random;
using Robust.Shared.Timing;

namespace Content.Server.Ghost;

// Handlers for interactions with the GhostBooEvent.
public sealed partial class GhostSystem
{
    [Dependency] private IGameTiming _timing = default!;
    [Dependency] private AudioSystem _audio = default!;
    [Dependency] private ChatSystem _chat = default!;
    [Dependency] private FlammableSystem _flammable = default!;

    [Dependency] private EntityQuery<BlinkingPoweredLightComponent> _blinkingQuery;

    /// <summary>
    /// BooActionEvent handler. Raises BooActionEvents on nearby entities we run out of entities or we receive a response deemed sufficient.
    /// </summary>
    [SubscribeLocalEvent]
    private void OnGhostBooAction(Entity<GhostComponent> ent, ref BooActionEvent args)
    {
        if (args.Handled)
            return;

        var entities = _lookup.GetEntitiesInRange(args.Performer, ent.Comp.BooRadius).ToList();
        // Shuffle the possible targets so we don't favor any particular entities
        _random.Shuffle(entities);

        // Set our desired intensity based on how many normal events the ghost wants to create.
        var remainingIntensity = ent.Comp.BooIntensity;
        var anythingAffected = false;
        foreach (var booUid in entities)
        {
            var allowedIntensity = GetIntensity(remainingIntensity);
            if (allowedIntensity == GhostBooIntensity.None)
                break;

            var ghostBoo = new GhostBooEvent(allowedIntensity);
            RaiseLocalEvent(booUid, ref ghostBoo);
            if (!ghostBoo.Handled)
                continue;

            // Handle our response depending on the intensity of the action.
            anythingAffected = true;
            remainingIntensity -= (int)ghostBoo.ResponseIntensity;

            if (remainingIntensity <= 0)
                break;
        }

        if (!anythingAffected)
            _popup.PopupEntity(Loc.GetString("ghost-component-boo-action-failed"), ent, ent);

        args.Handled = true;
    }

    #region Boo Handlers
    [SubscribeLocalEvent]
    private void OnSpeakerBoo(Entity<SpookySpeakerComponent> ent, ref GhostBooEvent args)
    {
        // Check if already handled, or too intense.
        if (args.Handled || args.AllowedIntensity < ent.Comp.Intensity)
            return;

        // Only activate sometimes, so groups don't all trigger together
        if (!_random.Prob(ent.Comp.SpeakChance))
            return;

        var curTime = _timing.CurTime;
        // Enforce a delay between messages to prevent spam
        if (curTime < ent.Comp.NextSpeakTime)
            return;

        if (!ProtoMan.Resolve(ent.Comp.MessageSet, out var messages))
            return;

        // Grab a random localized message from the set
        var message = _random.Pick(messages);
        // Chatcode moment: messages starting with '.' are considered radio messages unless prefixed with '>'
        // So this is a stupid trick to make the "...Oooo"-style messages work.
        message = '>' + message;
        // Say the message
        _chat.TrySendInGameICMessage(ent, message, InGameICChatType.Speak, hideChat: true);

        // Set the delay for the next message
        ent.Comp.NextSpeakTime = curTime + ent.Comp.Cooldown;

        args.SetResponseIntensity(ent.Comp.Intensity);
    }

    [SubscribeLocalEvent]
    private void OnExtinguishBoo(Entity<SpookyExtinguishableComponent> ent, ref GhostBooEvent args)
    {
        // Check if already handled, or too intense.
        if (args.Handled || args.AllowedIntensity < ent.Comp.Intensity)
            return;

        // Check if we need to extinguish this entity.
        if (!_random.Prob(ent.Comp.ExtinguishChance))
            return;

        if (!_flammable.TryExtinguish(ent.Owner))
            return;

        if (ent.Comp.ExtinguishSound != null)
            _audio.PlayPvs(ent.Comp.ExtinguishSound, ent);

        args.SetResponseIntensity(ent.Comp.Intensity);
    }

    [SubscribeLocalEvent]
    private void OnPoweredLightBoo(Entity<SpookyPoweredLightComponent> ent, ref GhostBooEvent args)
    {
        // Already handled?
        if (args.Handled || args.AllowedIntensity < ent.Comp.Intensity)
            return;

        // Is the light already blinking?
        if (_blinkingQuery.HasComp(ent))
            return;

        // Check cooldown first to prevent abuse.
        var curTime = _timing.CurTime;
        if (curTime < ent.Comp.NextGhostBlink)
            return;

        ent.Comp.NextGhostBlink = curTime + ent.Comp.GhostBlinkingCooldown;

        var blinkingComp = EnsureComp<BlinkingPoweredLightComponent>(ent);
        blinkingComp.StopBlinkingTime = curTime + ent.Comp.GhostBlinkingTime;
        Dirty(ent, blinkingComp);

        args.SetResponseIntensity(ent.Comp.Intensity);
    }
    #endregion Boo Handlers

    /// <summary>
    /// Returns the GhostBooIntensity from <paramref name="value"/>.
    /// </summary>
    private GhostBooIntensity GetIntensity(int value)
    {
        if (value >= (int)GhostBooIntensity.Extreme)
            return GhostBooIntensity.Extreme;
        else if (value >= (int)GhostBooIntensity.Normal)
            return GhostBooIntensity.Normal;
        else if (value >= (int)GhostBooIntensity.Subtle)
            return GhostBooIntensity.Subtle;
        else
            return GhostBooIntensity.None;
    }
}