internal static IChannel CreateFromJson(ChannelJson json, [CanBeNull] object state)
{
IChannel res = null;
if (_typeCaches.ContainsKey(json.type))
{
_globalCache.Mutex(() => {
ICache <IChannel> cache = _typeCaches[json.type];
cache.Mutex(() => {
if (cache.Contains(json.id))
{
res = cache[json.id];
}
else if (_globalCache.Contains(json.id))
{
throw new WrongChannelTypeException("JSON specifies type of channel is " + json.type + ", but cached data says it should be " + _globalCache[json.id].Type + ".");
}
else
{
switch (json.type)
{
case ChannelType.DirectMessage:
case ChannelType.GroupDirectMessage:
res = new DirectMessageTextChannel(json, json.id);
TextChannel.Populate((TextChannel)res, json, state);
break;
case ChannelType.ServerCategory:
res = new ChannelCategory(json.id, json.id);
ChannelCategory.Populate((ChannelCategory)res, json, state);
break;
case ChannelType.ServerText:
res = new ServerTextChannel(json, json.id);
TextChannel.Populate((TextChannel)res, json, state);
break;
}
_globalCache.Add(res);
cache.Add(res);
}
});
});
}
return(res);
}