public async Task <IList <MessageData> > LoadMessagesAsync(int limit = 0, CancellationToken token = default)
{
var messages = await _messageRepository.GetAsync(limit, token);
if (messages == null || messages.Count == 0)
{
return(null);
}
List <MessageData> res = new List <MessageData>();
for (int i = 0; i < messages.Count; i++)
{
MessageDataEntity m = messages[i];
string text = m.Text;
token.ThrowIfCancellationRequested();
if (i + 1 < messages.Count && messages[i + 1].Id == m.Id)
{
StringBuilder textBuilder = new StringBuilder(m.Text);
while (i + 1 < messages.Count && messages[i + 1].Id == m.Id)
{
textBuilder.Append("\n" + messages[++i].Text);
}
text = textBuilder.ToString();
}
res.Add(new MessageData(m.Id, m.DateTime,
m.UserName, text,
m.UserName == CurrentUserContext.CurrentUserName,
m.ReplyToMessageId));
}
return(res);
}
public async Task GetLast2StringFrom5_Return2()
{
File.AppendAllLines(_filename,
new string[]
{
(new MessageDataEntity("user11", "hello1")).ToString(),
(new MessageDataEntity("user21", "hello2")).ToString(),
(new MessageDataEntity("user31", "hello3")).ToString(),
(new MessageDataEntity("user41", "hello4")).ToString(),
(new MessageDataEntity("user51", "hello5")).ToString(),
});
var res = await _repo.GetAsync(2);
Assert.AreEqual(2, res.Count);
Assert.AreEqual("USER41", res[0].UserName);
Assert.AreEqual("USER51", res[1].UserName);
}