using Fantasy.Entitas;
using Fantasy.Helper;

namespace NB.Chat;

public static class ChatChannelCenterComponentSystem
{
    /// <summary>
    /// 申请创建一个频道
    /// </summary>
    /// <param name="self"></param>
    /// <param name="unit"></param>
    /// <param name="channelId"></param>
    /// <returns></returns>
    public static ChatChannel Apply(this ChatChannelCenterComponent self, ChatUnit unit, long channelId)
    {
        if (self.Channels.TryGetValue(channelId, out var channel))
        {
            return channel;
        }

        channel = Entity.Create<ChatChannel>(self.Scene, channelId, true, true);
        channel.Creator = unit.Role.RoleId;
        channel.CreateTime = TimeHelper.Now;
        self.Channels.Add(channelId, channel);
        return channel;
    }

    /// <summary>
    /// 获取
    /// </summary>
    /// <param name="self"></param>
    /// <param name="channelId"></param>
    /// <param name="channel"></param>
    /// <returns></returns>
    public static bool TryGet(this ChatChannelCenterComponent self, long channelId, out ChatChannel? channel)
    {
        return self.Channels.TryGetValue(channelId, out channel);
    }

    /// <summary>
    /// 解散
    /// </summary>
    /// <param name="self"></param>
    /// <param name="channelId"></param>
    public static void Disband(this ChatChannelCenterComponent self, long channelId)
    {
        if (self.Channels.Remove(channelId, out var channel))
        {
            return;
        }

        channel?.Dispose();
    }
}