/// <summary>
/// 保存聊天记录【单条即时保存】
/// </summary>
/// <param name="message"></param>
/// <returns></returns>
public Task <int> SaveMessage(LayIMMessageModel message)
{
if (message?.IsVlid == true)
{
message.RoomId = RoomIdGenerator.RoomId(message.From, message.To, message.Type);
return(chatRecordRepository.Add(message));
}
return(Task.FromResult(0));
}
/// <summary>
/// 获取聊天历史记录
/// </summary>
/// <param name="userId"></param>
/// <param name="targetId"></param>
/// <param name="type"></param>
/// <param name="fromTimestamp"></param>
/// <param name="page"></param>
/// <returns></returns>
public async Task <IEnumerable <ChatMessageViewModel> > GetChatMessages(string userId, string targetId, string type, long fromTimestamp, int page = 20)
{
if (string.IsNullOrEmpty(userId) || string.IsNullOrEmpty(targetId))
{
return(LayIMNoData.NoChatMessages);
}
if (page <= 0)
{
page = 1;
}
string roomId = RoomIdGenerator.RoomId(userId, targetId, type);
var chatRecords = await chatRecordRepository.GetList(roomId, page, fromTimestamp);
if (chatRecords?.Count() > 0)
{
var userIds = chatRecords.Select(x => x.FromId);
var users = await userRepository.GetUsersByIds(userIds);
var result = new List <ChatMessageViewModel>();
long uidLong = long.Parse(userId);
foreach (var chat in chatRecords)
{
var user = users.FirstOrDefault(x => x.id == chat.FromId);
result.Add(new ChatMessageViewModel
{
addtime = chat.AddTime,
from = chat.FromId,
msg = chat.Msg,
self = chat.FromId == uidLong,
avatar = user?.avatar,
username = user?.username
});
}
return(result.OrderBy(x => x.addtime));
}
return(LayIMNoData.NoChatMessages);
}