internal Vote(VoteDumpVersion version, UInt32 visualNovelId, UInt32 userId, Byte value, SimpleDate addedOn)
{
this.Version = version;
this.VisualNovelId = visualNovelId;
this.UserID = userId;
this.Value = value;
this.AddedOn = addedOn;
}
internal static async Task <IEnumerable <Vote> > GetAndParseVotesAsync(VoteDumpVersion version)
{
var url = version == VoteDumpVersion.One ? Constants.VotesDump : Constants.VotesDump2;
Debug.WriteLine($"Requesting Votes Dump via {url}");
// .Net Core removed WebClient and Http/WebRequests, so we need to use HttpClient.
var request = new HttpRequestMessage(HttpMethod.Get, new Uri(url));
// Manually add the headers every request rather then using the default headers,
// incase the client was rebuilt with a new name / version mid-application session
request.Headers.Add("User-Agent", $"{VndbUtils.ClientName} (v{VndbUtils.ClientVersion})");
var response = await VndbUtils.HttpClient.SendAsync(request);
response.EnsureSuccessStatusCode(); // Ensure we got data
var gzipStream = await response.Content.ReadAsStreamAsync();
var rawContents = await VndbUtils.UnGzip(gzipStream);
response.Dispose();
request.Dispose();
var results = new List <Vote>();
var votes = rawContents.Split(new[] { '\n' }, StringSplitOptions.RemoveEmptyEntries);
var expectedValues = version == VoteDumpVersion.One ? 3 : 4;
// Resharper "Loop can be converted to LINQ-expression won't work due to inline "out var" declaration
foreach (var vote in votes)
{
var values = vote.Split(new [] { ' ' }, expectedValues, StringSplitOptions.RemoveEmptyEntries);
if (values.Length != expectedValues)
{
continue;
}
SimpleDate date = null;
if (!UInt32.TryParse(values[0], out var vnId) ||
!UInt32.TryParse(values[1], out var uid) ||
!Byte.TryParse(values[2], out var value))
{
continue;
}
if (version == VoteDumpVersion.Two &&
(date = (SimpleDate)SimpleDateConverter.ParseString(values[3])) == null)
{
continue;
}
results.Add(new Vote(version, vnId, uid, value, date));
}
return(results);
}
/// <summary>
/// Downloads and PArses the Votes Dump from Vndb
/// </summary>
/// <param name="version">The version of the Votes Dump to grab</param>
/// <returns>An <see cref="IEnumerable{T}"/> of <see cref="Vote"/></returns>
/// <exception cref="HttpRequestException">Occurs when the votes.gz file returns a non-success status</exception>
public static async Task <IEnumerable <Vote> > GetVotesDumpAsync(VoteDumpVersion version = VoteDumpVersion.Two)
=> await VndbUtils.GetAndParseVotesAsync(version).ConfigureAwait(false);
