public static async Task <IList <BilibiliMessage> > FetchLatestComments(int count)
{
var fi = new FileInfo(ChatLogDatabasePath);
fi.Directory.Create();
fi = new FileInfo(UserDatabasePath);
fi.Directory.Create();
using (var db = new LiteDatabase(ChatLogDatabasePath))
{
var chats = db.GetCollection <BilibiliMessage>();
var query = Query.And(
Query.All("ReceiveTime", Query.Descending),
Query.Or(
Query.EQ("MsgType", "Danmaku"),
Query.EQ("MsgType", "Gift")
)
);
var results = chats.Find(query, 0, count);
foreach (var i in results)
{
var user = PickUserInformation(i.SenderId);
if (user != null)
{
var facedata = await HttpRequests.DownloadBytes(user.Face);
i.AvatarBase64 = ImageHelper.ConvertToJpegBase64(facedata);
}
}
return(results.Reverse().ToList());
}
}
private async Task <User> CacheUser(string uid, Action <User> Callback = null)
{
// Pick user if exists and skip caching.
var inDB = Database.PickUserInformation(Convert.ToInt32(uid));
if (inDB != null && inDB.LastUpdateTime.Subtract(DateTime.UtcNow).TotalDays < 1)
{
return(inDB);
}
//Call api to get user information.
var headers = new Dictionary <string, string> {
{ "User-Agent", "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/52.0.2743.116 Safari/537.36" },
{ "Referer", "http://m.bilibili.com" },
{ "Origin", "http://m.bilibili.com" },
};
// Post and get data from API.
var result = await HttpRequests.DownloadString(
url : "https://api.bilibili.com/x/space/acc/info?mid=" + uid,
headers : headers,
encoding : Encoding.UTF8
);
var json = JToken.Parse(result);
var face64 = "";
// Download avatar.
if (json["data"]?["face"] != null)
{
var facedata = await HttpRequests.DownloadBytes(json["data"]["face"].ToString());
face64 = ImageHelper.ConvertToJpegBase64(facedata);
}
// Save the data.
var user = new User
{
BirthDay = json["data"]["birthday"]?.ToString() ?? "保密",
Face = json["data"]["face"]?.ToString() ?? "",
FaceBase64 = face64 ?? "",
Level = json["data"]["level_info"]?["current_level"]?.ToObject <int>() ?? -1,
Id = json["data"]["mid"]?.ToObject <int>() ?? 0,
Name = json["data"]["name"]?.ToString() ?? "",
Sex = json["data"]["sex"]?.ToString() ?? "保密"
};
if (user.Id == 0)
{
return(null);
}
Database.SaveUserInformation(user);
Callback(user);
return(user);
}