OldThink/Content.Shared/Chat/SharedChatSystem.cs

using Content.Shared.Popups;
using Content.Shared.Radio;
using Content.Shared.Speech;
using Robust.Shared.Prototypes;
using Robust.Shared.Utility;

namespace Content.Shared.Chat;

public abstract class SharedChatSystem : EntitySystem
{
    public const char RadioCommonPrefix = ';';
    public const char RadioChannelPrefix = ':';
    public const char RadioChannelAltPrefix = '.';
    public const char LocalPrefix = '>';
    public const char ConsolePrefix = '/';
    public const char DeadPrefix = '\\';
    public const char LOOCPrefix = '(';
    public const char OOCPrefix = '[';
    public const char EmotesPrefix = '@';
    public const char EmotesAltPrefix = '*';
    public const char AdminPrefix = ']';
    public const char WhisperPrefix = ',';
    public const char DefaultChannelKey = 'h';

    [ValidatePrototypeId<RadioChannelPrototype>]
    public const string CommonChannel = "Common";

    public static string DefaultChannelPrefix = $"{RadioChannelPrefix}{DefaultChannelKey}";

    [ValidatePrototypeId<SpeechVerbPrototype>]
    public const string DefaultSpeechVerb = "Default";

    [Dependency] private readonly IPrototypeManager _prototypeManager = default!;
    [Dependency] private readonly SharedPopupSystem _popup = default!;

    /// <summary>
    /// Cache of the keycodes for faster lookup.
    /// </summary>
    private readonly Dictionary<char, RadioChannelPrototype> _keyCodes = new();

    public override void Initialize()
    {
        base.Initialize();
        DebugTools.Assert(_prototypeManager.HasIndex<RadioChannelPrototype>(CommonChannel));
        SubscribeLocalEvent<PrototypesReloadedEventArgs>(OnPrototypeReload);
        CacheRadios();
    }

    protected virtual void OnPrototypeReload(PrototypesReloadedEventArgs obj)
    {
        if (obj.WasModified<RadioChannelPrototype>())
            CacheRadios();
    }

    private void CacheRadios()
    {
        _keyCodes.Clear();

        foreach (var proto in _prototypeManager.EnumeratePrototypes<RadioChannelPrototype>())
        {
            //WD-EDIT
            foreach (var keycode in proto.KeyCodes)
            {
                if (_keyCodes.ContainsKey(keycode))
                    continue;
                _keyCodes.Add(keycode, proto);
            }
            //WD-EDIT
        }
    }

    /// <summary>
    ///     Attempts to find an applicable <see cref="SpeechVerbPrototype"/> for a speaking entity's message.
    ///     If one is not found, returns <see cref="DefaultSpeechVerb"/>.
    /// </summary>
    public SpeechVerbPrototype GetSpeechVerb(EntityUid source, string message, SpeechComponent? speech = null)
    {
        if (!Resolve(source, ref speech, false))
            return _prototypeManager.Index<SpeechVerbPrototype>(DefaultSpeechVerb);

        // check for a suffix-applicable speech verb
        SpeechVerbPrototype? current = null;
        foreach (var (str, id) in speech.SuffixSpeechVerbs)
        {
            var proto = _prototypeManager.Index(id);
            if (message.EndsWith(Loc.GetString(str)) && proto.Priority >= (current?.Priority ?? 0))
            {
                current = proto;
            }
        }

        // if no applicable suffix verb return the normal one used by the entity
        return current ?? _prototypeManager.Index(speech.SpeechVerb);
    }

    /// <summary>
    ///     Attempts to resolve radio prefixes in chat messages (e.g., remove a leading ":e" and resolve the requested
    ///     channel. Returns true if a radio message was attempted, even if the channel is invalid.
    /// </summary>
    /// <param name="source">Source of the message</param>
    /// <param name="input">The message to be modified</param>
    /// <param name="output">The modified message</param>
    /// <param name="channel">The channel that was requested, if any</param>
    /// <param name="quiet">Whether or not to generate an informative pop-up message.</param>
    /// <returns></returns>
    public bool TryProccessRadioMessage(
        EntityUid source,
        string input,
        out string output,
        out RadioChannelPrototype? channel,
        bool quiet = false)
    {
        output = input.Trim();
        channel = null;

        if (input.Length == 0)
            return false;

        if (input.StartsWith(RadioCommonPrefix))
        {
            output = SanitizeMessageCapital(input[1..].TrimStart());
            channel = _prototypeManager.Index<RadioChannelPrototype>(CommonChannel);
            return true;
        }

        if (!(input.StartsWith(RadioChannelPrefix) || input.StartsWith(RadioChannelAltPrefix)))
            return false;

        if (input.Length < 2 || char.IsWhiteSpace(input[1]))
        {
            output = SanitizeMessageCapital(input[1..].TrimStart());
            if (!quiet)
                _popup.PopupEntity(Loc.GetString("chat-manager-no-radio-key"), source, source);
            return true;
        }

        var channelKey = input[1];
        channelKey = char.ToLower(channelKey);
        output = SanitizeMessageCapital(input[2..].TrimStart());

        if (channelKey == DefaultChannelKey)
        {
            var ev = new GetDefaultRadioChannelEvent();
            RaiseLocalEvent(source, ev);

            if (ev.Channel != null)
                _prototypeManager.TryIndex(ev.Channel, out channel);
            return true;
        }

        if (!_keyCodes.TryGetValue(channelKey, out channel) && !quiet)
        {
            var msg = Loc.GetString("chat-manager-no-such-channel", ("key", channelKey));
            _popup.PopupEntity(msg, source, source);
        }

        return true;
    }

    public string SanitizeMessageCapital(string message)
    {
        if (string.IsNullOrEmpty(message))
            return message;
        // Capitalize first letter
        message = char.ToUpper(message[0]) + message.Remove(0, 1);
        return message;
    }
}