public async Task <RetwisUser> GetUserAsync(string username, string password)
{
var db = _context.GetDatabase();
var details = (await db.HashGetAllAsync(GetUserKey(username))).ToDictionary();
if (!details.Any() || details["password"] != password)
{
return(null);
}
return(new RetwisUser(username, Guid.Parse(details["user_identifier"])));
}
public async Task <LatestRegisteredUser[]> GetLatestUsers()
{
var db = _context.GetDatabase();
var users = await db.SortedSetRangeByRankAsync("users_by_time", stop : 9, order : Order.Descending);
return(users.Select(x => new LatestRegisteredUser(x)).ToArray());
}
public async Task UpdateStatusAsync(Guid userIdentifier, string status)
{
var db = _context.GetDatabase();
// persist the post
var postId = db.StringIncrement("next_post_id");
db.HashSet("post:" + postId, new[]
{
new HashEntry("user_id", userIdentifier.ToString()),
new HashEntry("time", DateTime.Now.Ticks),
new HashEntry("status", status),
});
// push to follower's timelines
var followers = await db.SortedSetRangeByScoreAsync("followers:" + userIdentifier);
foreach (var follower in followers)
{
await db.ListLeftPushAsync("posts:" + follower, postId);
}
// push to my timeline
await db.ListLeftPushAsync("posts:" + userIdentifier, postId);
// push to the timeline and trim to last 1000
await db.ListLeftPushAsync("timeline", postId);
await db.ListTrimAsync("timeline", 0, 1000);
}
public async Task <LatestMessage[]> GetLatestMessages()
{
var db = _context.GetDatabase();
var postIds = await db.ListRangeAsync("timeline", 0, -1);
var posts =
await _latestMessageRepository.GetMessagesFor(db, postIds.Select(x => long.Parse(x)).ToArray());
return(posts.ToArray());
}
public async Task <LatestMessage[]> GetLatestMessagesAsync(Guid userIdentifier)
{
var db = _context.GetDatabase();
var postIds = await db.ListRangeAsync("posts:" + userIdentifier, 0, -1);
var posts =
await _latestMessageRepository.GetMessagesFor(db, postIds.Select(x => long.Parse(x)).ToArray());
return(posts.ToArray());
}