using Content.Server.Chat.Systems;
using Content.Server.Popups;
using Content.Server.Radio.Components;
using Content.Server.Speech;
using Content.Server.Speech.Components;
using Content.Shared.Examine;
using Content.Shared.Interaction;
using Content.Shared.Radio;
using Robust.Shared.Player;
using Robust.Shared.Prototypes;

namespace Content.Server.Radio.EntitySystems;

/// <summary>
///     This system handles radio speakers and microphones (which together form a hand-held radio).
/// </summary>
public sealed class RadioDeviceSystem : EntitySystem
{
    [Dependency] private readonly IPrototypeManager _protoMan = default!;
    [Dependency] private readonly PopupSystem _popup = default!;
    [Dependency] private readonly ChatSystem _chat = default!;
    [Dependency] private readonly RadioSystem _radio = default!;

    // Used to prevent a shitter from using a bunch of radios to spam chat.
    private HashSet<(string, EntityUid)> _recentlySent = new();

    public override void Initialize()
    {
        base.Initialize();
        SubscribeLocalEvent<RadioMicrophoneComponent, ComponentInit>(OnMicrophoneInit);
        SubscribeLocalEvent<RadioMicrophoneComponent, ExaminedEvent>(OnExamine);
        SubscribeLocalEvent<RadioMicrophoneComponent, ActivateInWorldEvent>(OnActivateMicrophone);
        SubscribeLocalEvent<RadioMicrophoneComponent, ListenEvent>(OnListen);

        SubscribeLocalEvent<RadioSpeakerComponent, ComponentInit>(OnSpeakerInit);
        SubscribeLocalEvent<RadioSpeakerComponent, ActivateInWorldEvent>(OnActivateSpeaker);
        SubscribeLocalEvent<RadioSpeakerComponent, RadioReceiveEvent>(OnReceiveRadio);
    }

    public override void Update(float frameTime)
    {
        base.Update(frameTime);
        _recentlySent.Clear();
    }


    #region Component Init
    private void OnMicrophoneInit(EntityUid uid, RadioMicrophoneComponent component, ComponentInit args)
    {
        if (component.Enabled)
            EnsureComp<ActiveListenerComponent>(uid).Range = component.ListenRange;
        else
            RemCompDeferred<ActiveListenerComponent>(uid);
    }

    private void OnSpeakerInit(EntityUid uid, RadioSpeakerComponent component, ComponentInit args)
    {
        if (component.Enabled)
            EnsureComp<ActiveRadioComponent>(uid).Channels.UnionWith(component.Channels);
        else
            RemCompDeferred<ActiveRadioComponent>(uid);
    }
    #endregion

    #region Toggling
    private void OnActivateMicrophone(EntityUid uid, RadioMicrophoneComponent component, ActivateInWorldEvent args)
    {
        ToggleRadioMicrophone(uid, args.User, args.Handled, component);
        args.Handled = true;
    }

    private void OnActivateSpeaker(EntityUid uid, RadioSpeakerComponent component, ActivateInWorldEvent args)
    {
        ToggleRadioSpeaker(uid, args.User, args.Handled, component);
        args.Handled = true;
    }

    public void ToggleRadioMicrophone(EntityUid uid, EntityUid user, bool quiet = false, RadioMicrophoneComponent? component = null)
    {
        if (!Resolve(uid, ref component))
            return;

        component.Enabled = !component.Enabled;

        if (!quiet)
        {
            var state = Loc.GetString(component.Enabled ? "handheld-radio-component-on-state" : "handheld-radio-component-off-state");
            var message = Loc.GetString("handheld-radio-component-on-use", ("radioState", state));
            _popup.PopupEntity(message, user, Filter.Entities(user));
        }

        if (component.Enabled)
            EnsureComp<ActiveListenerComponent>(uid).Range = component.ListenRange;
        else
            RemCompDeferred<ActiveListenerComponent>(uid);
    }

    public void ToggleRadioSpeaker(EntityUid uid, EntityUid user, bool quiet = false, RadioSpeakerComponent? component = null)
    {
        if (!Resolve(uid, ref component))
            return;

        component.Enabled = !component.Enabled;

        if (!quiet)
        {
            var state = Loc.GetString(component.Enabled ? "handheld-radio-component-on-state" : "handheld-radio-component-off-state");
            var message = Loc.GetString("handheld-radio-component-on-use", ("radioState", state));
            _popup.PopupEntity(message, user, Filter.Entities(user));
        }

        if (component.Enabled)
            EnsureComp<ActiveRadioComponent>(uid).Channels.UnionWith(component.Channels);
        else
            RemCompDeferred<ActiveRadioComponent>(uid);
    }
    #endregion

    private void OnExamine(EntityUid uid, RadioMicrophoneComponent component, ExaminedEvent args)
    {
        if (!args.IsInDetailsRange)
            return;

        var freq = _protoMan.Index<RadioChannelPrototype>(component.BroadcastChannel).Frequency;
        args.PushMarkup(Loc.GetString("handheld-radio-component-on-examine", ("frequency", freq)));
    }

    private void OnListen(EntityUid uid, RadioMicrophoneComponent component, ListenEvent args)
    {
        if (HasComp<RadioSpeakerComponent>(args.Source))
            return; // no feedback loops please.

        if (_recentlySent.Add((args.Message, args.Source)))
            _radio.SendRadioMessage(args.Source, args.Message, _protoMan.Index<RadioChannelPrototype>(component.BroadcastChannel));
    }

    private void OnReceiveRadio(EntityUid uid, RadioSpeakerComponent component, RadioReceiveEvent args)
    {
        var nameEv = new TransformSpeakerNameEvent(args.Source, Name(args.Source));
        RaiseLocalEvent(args.Source, nameEv);

        var name = Loc.GetString("speech-name-relay", ("speaker", Name(uid)),
            ("originalName", nameEv.Name));

        var hideGlobalGhostChat = true; // log to chat so people can identity the speaker/source, but avoid clogging ghost chat if there are many radios
        _chat.TrySendInGameICMessage(uid, args.Message, InGameICChatType.Speak, false, nameOverride: name, hideGlobalGhostChat:hideGlobalGhostChat); 
    }
}