wabbajack/Wabbajack.Networking.NexusApi/NexusApi.cs
2022-10-26 14:49:59 -06:00

339 lines
14 KiB
C#

using System;
using System.IO;
using System.Linq;
using System.Net;
using System.Net.Http;
using System.Net.Http.Headers;
using System.Net.Http.Json;
using System.Text.Json;
using System.Threading;
using System.Threading.Tasks;
using Microsoft.Extensions.Logging;
using Wabbajack.Common;
using Wabbajack.DTOs;
using Wabbajack.DTOs.Logins;
using Wabbajack.Networking.Http;
using Wabbajack.Networking.Http.Interfaces;
using Wabbajack.Networking.NexusApi.DTOs;
using Wabbajack.Paths.IO;
using Wabbajack.RateLimiter;
using Wabbajack.Server.DTOs;
namespace Wabbajack.Networking.NexusApi;
public class NexusApi
{
private readonly ApplicationInfo _appInfo;
private readonly HttpClient _client;
private readonly JsonSerializerOptions _jsonOptions;
private readonly IResource<HttpClient> _limiter;
private readonly ILogger<NexusApi> _logger;
public readonly ITokenProvider<NexusApiState> ApiKey;
private DateTime _lastValidated;
private (ValidateInfo info, ResponseMetadata header) _lastValidatedInfo;
public NexusApi(ITokenProvider<NexusApiState> apiKey, ILogger<NexusApi> logger, HttpClient client,
IResource<HttpClient> limiter, ApplicationInfo appInfo, JsonSerializerOptions jsonOptions)
{
ApiKey = apiKey;
_logger = logger;
_client = client;
_appInfo = appInfo;
_jsonOptions = jsonOptions;
_limiter = limiter;
_lastValidated = DateTime.MinValue;
_lastValidatedInfo = default;
}
public virtual async Task<(ValidateInfo info, ResponseMetadata header)> Validate(
CancellationToken token = default)
{
var msg = await GenerateMessage(HttpMethod.Get, Endpoints.Validate);
return await Send<ValidateInfo>(msg, token);
}
public async Task<(ValidateInfo info, ResponseMetadata header)> ValidateCached(
CancellationToken token = default)
{
if (DateTime.Now - _lastValidated < TimeSpan.FromMinutes(10))
{
return _lastValidatedInfo;
}
var msg = await GenerateMessage(HttpMethod.Get, Endpoints.Validate);
_lastValidatedInfo = await Send<ValidateInfo>(msg, token);
return _lastValidatedInfo;
}
public virtual async Task<(ModInfo info, ResponseMetadata header)> ModInfo(string nexusGameName, long modId,
CancellationToken token = default)
{
var msg = await GenerateMessage(HttpMethod.Get, Endpoints.ModInfo, nexusGameName, modId);
return await Send<ModInfo>(msg, token);
}
public virtual async Task<(ModFiles info, ResponseMetadata header)> ModFiles(string nexusGameName, long modId,
CancellationToken token = default)
{
var msg = await GenerateMessage(HttpMethod.Get, Endpoints.ModFiles, nexusGameName, modId);
return await Send<ModFiles>(msg, token);
}
public virtual async Task<(ModFile info, ResponseMetadata header)> FileInfo(string nexusGameName, long modId,
long fileId, CancellationToken token = default)
{
var msg = await GenerateMessage(HttpMethod.Get, Endpoints.ModFile, nexusGameName, modId, fileId);
return await Send<ModFile>(msg, token);
}
public virtual async Task<(DownloadLink[] info, ResponseMetadata header)> DownloadLink(string nexusGameName,
long modId, long fileId, CancellationToken token = default)
{
var msg = await GenerateMessage(HttpMethod.Get, Endpoints.DownloadLink, nexusGameName, modId, fileId);
return await Send<DownloadLink[]>(msg, token);
}
protected virtual async Task<(T data, ResponseMetadata header)> Send<T>(HttpRequestMessage msg,
CancellationToken token = default)
{
using var job = await _limiter.Begin($"API call to the Nexus {msg.RequestUri!.PathAndQuery}", 0, token);
using var result = await _client.SendAsync(msg, token);
if (!result.IsSuccessStatusCode)
throw new HttpException(result);
var headers = ParseHeaders(result);
job.Size = result.Content.Headers.ContentLength ?? 0;
await job.Report((int) (result.Content.Headers.ContentLength ?? 0), token);
var body = await result.Content.ReadAsByteArrayAsync(token);
return (JsonSerializer.Deserialize<T>(body, _jsonOptions)!, headers);
}
protected virtual ResponseMetadata ParseHeaders(HttpResponseMessage result)
{
var metaData = new ResponseMetadata();
{
if (result.Headers.TryGetValues("x-rl-daily-limit", out var limits))
if (int.TryParse(limits.First(), out var limit))
metaData.DailyLimit = limit;
}
{
if (result.Headers.TryGetValues("x-rl-daily-remaining", out var limits))
if (int.TryParse(limits.First(), out var limit))
metaData.DailyRemaining = limit;
}
{
if (result.Headers.TryGetValues("x-rl-daily-reset", out var resets))
if (DateTime.TryParse(resets.First(), out var reset))
metaData.DailyReset = reset;
}
{
if (result.Headers.TryGetValues("x-rl-hourly-limit", out var limits))
if (int.TryParse(limits.First(), out var limit))
metaData.HourlyLimit = limit;
}
{
if (result.Headers.TryGetValues("x-rl-hourly-remaining", out var limits))
if (int.TryParse(limits.First(), out var limit))
metaData.HourlyRemaining = limit;
}
{
if (result.Headers.TryGetValues("x-rl-hourly-reset", out var resets))
if (DateTime.TryParse(resets.First(), out var reset))
metaData.HourlyReset = reset;
}
{
if (result.Headers.TryGetValues("x-runtime", out var runtimes))
if (double.TryParse(runtimes.First(), out var reset))
metaData.Runtime = reset;
}
_logger.LogInformation("Nexus API call finished: {Runtime} - Remaining Limit: {RemainingLimit}",
metaData.Runtime, Math.Max(metaData.DailyRemaining, metaData.HourlyRemaining));
return metaData;
}
protected virtual async ValueTask<HttpRequestMessage> GenerateMessage(HttpMethod method, string uri,
params object?[] parameters)
{
var msg = new HttpRequestMessage();
msg.Method = method;
var userAgent =
$"{_appInfo.ApplicationSlug}/{_appInfo.Version} ({_appInfo.OSVersion}; {_appInfo.Platform})";
if (!ApiKey.HaveToken())
throw new Exception("Please log into the Nexus before attempting to use Wabbajack");
var token = (await ApiKey.Get())!;
msg.RequestUri = new Uri($"https://api.nexusmods.com/{string.Format(uri, parameters)}");
msg.Headers.Add("User-Agent", userAgent);
msg.Headers.Add("Application-Name", _appInfo.ApplicationSlug);
msg.Headers.Add("Application-Version", _appInfo.Version);
msg.Headers.Add("apikey", token.ApiKey);
msg.Headers.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
return msg;
}
public async Task<(UpdateEntry[], ResponseMetadata headers)> GetUpdates(Game game, CancellationToken token)
{
var msg = await GenerateMessage(HttpMethod.Get, Endpoints.Updates, game.MetaData().NexusName, "1m");
return await Send<UpdateEntry[]>(msg, token);
}
public async Task<ChunkStatus> ChunkStatus(UploadDefinition definition, Chunk chunk)
{
var msg = new HttpRequestMessage();
msg.Method = HttpMethod.Get;
var query =
$"resumableChunkNumber={chunk.Index + 1}&resumableCurrentChunkSize={chunk.Size}&resumableTotalSize={definition.FileSize}"
+ $"&resumableType=&resumableIdentifier={definition.ResumableIdentifier}&resumableFilename={definition.ResumableRelativePath}"
+ $"&resumableRelativePath={definition.ResumableRelativePath}&resumableTotalChunks={definition.Chunks().Count()}";
msg.RequestUri = new Uri($"https://upload.nexusmods.com/uploads/chunk?{query}");
using var result = await _client.SendAsync(msg);
if (!result.IsSuccessStatusCode)
throw new HttpException(result);
if (result.StatusCode == HttpStatusCode.NoContent)
return DTOs.ChunkStatus.NoContent;
var status = await result.Content.ReadFromJsonAsync<ChunkStatusResult>();
return status?.Status ?? false ? DTOs.ChunkStatus.Done : DTOs.ChunkStatus.Waiting;
}
public async Task<ChunkStatusResult> UploadChunk(UploadDefinition d, Chunk chunk)
{
var form = new MultipartFormDataContent();
form.Add(new StringContent((chunk.Index+1).ToString()), "resumableChunkNumber");
form.Add(new StringContent(UploadDefinition.ChunkSize.ToString()), "resumableChunkSize");
form.Add(new StringContent(chunk.Size.ToString()), "resumableCurrentChunkSize");
form.Add(new StringContent(d.FileSize.ToString()), "resumableTotalSize");
form.Add(new StringContent(""), "resumableType");
form.Add(new StringContent(d.ResumableIdentifier), "resumableIdentifier");
form.Add(new StringContent(d.ResumableRelativePath), "resumableFilename");
form.Add(new StringContent(d.ResumableRelativePath), "resumableRelativePath");
form.Add(new StringContent(d.Chunks().Count().ToString()), "resumableTotalChunks");
await using var ms = new MemoryStream();
await using var fs = d.Path.Open(FileMode.Open, FileAccess.Read, FileShare.Read);
fs.Position = chunk.Offset;
await fs.CopyToLimitAsync(ms, (int)chunk.Size, CancellationToken.None);
ms.Position = 0;
form.Add(new StreamContent(ms), "file", "blob");
var msg = new HttpRequestMessage(HttpMethod.Post, "https://upload.nexusmods.com/uploads/chunk");
msg.Content = form;
var result = await _client.SendAsync(msg);
if (result.StatusCode != HttpStatusCode.OK)
throw new HttpException(result);
var response = await result.Content.ReadFromJsonAsync<ChunkStatusResult>(_jsonOptions);
return response!;
}
public async Task UploadFile(UploadDefinition d)
{
_logger.LogInformation("Checking Access");
await CheckAccess();
_logger.LogInformation("Checking chunk status");
var numberOfChunks = d.Chunks().Count();
var chunkStatus = new ChunkStatusResult();
foreach (var chunk in d.Chunks())
{
var status = await ChunkStatus(d, chunk);
_logger.LogInformation("({Index}/{MaxChunks}) Chunk status: {Status}", chunk.Index, numberOfChunks, status);
if (status == DTOs.ChunkStatus.NoContent)
{
_logger.LogInformation("({Index}/{MaxChunks}) Uploading", chunk.Index, numberOfChunks);
chunkStatus = await UploadChunk(d, chunk);
}
}
await WaitForFileStatus(chunkStatus);
await AddFile(d, chunkStatus);
}
private async Task CheckAccess()
{
var msg = new HttpRequestMessage(HttpMethod.Get, "https://www.nexusmods.com/users/myaccount");
msg.AddCookies((await ApiKey.Get())!.Cookies);
using var response = await _client.SendAsync(msg);
var body = await response.Content.ReadAsStringAsync();
if (body.Contains("You are not allowed to access this area!"))
throw new HttpException(403, "Nexus Cookies are incorrect");
}
private async Task AddFile(UploadDefinition d, ChunkStatusResult status)
{
_logger.LogInformation("Saving file update {Name} to {Game}:{ModId}", d.Path.FileName, d.Game, d.ModId);
var msg = new HttpRequestMessage(HttpMethod.Post,
"https://www.nexusmods.com/Core/Libs/Common/Managers/Mods?AddFile");
msg.Headers.Referrer =
new Uri(
$"https://www.nexusmods.com/{d.Game.MetaData().NexusName}/mods/edit/?id={d.ModId}&game_id={d.GameId}&step=files");
msg.AddCookies((await ApiKey.Get())!.Cookies);
var form = new MultipartFormDataContent();
form.Add(new StringContent(d.GameId.ToString()), "game_id");
form.Add(new StringContent(d.Name), "name");
form.Add(new StringContent(d.Version), "file-version");
form.Add(new StringContent((d.RemoveOldVersion ? 1 : 0).ToString()), "update-version");
form.Add(new StringContent(((int)Enum.Parse<Category>(d.Category, true)).ToString()), "category");
form.Add(new StringContent((d.NewExisting ? 1 : 0).ToString()), "new-existing");
form.Add(new StringContent(d.OldFileId.ToString()), "old_file_id");
form.Add(new StringContent((d.RemoveOldVersion ? 1 : 0).ToString()), "remove-old-version");
form.Add(new StringContent(d.BriefOverview), "brief-overview");
form.Add(new StringContent((d.SetAsMain ? 1 : 0).ToString()), "set_as_main_nmm");
form.Add(new StringContent(status.UUID), "file_uuid");
form.Add(new StringContent(d.FileSize.ToString()), "file_size");
form.Add(new StringContent(d.ModId.ToString()), "mod_id");
form.Add(new StringContent(d.ModId.ToString()), "id");
form.Add(new StringContent("save"), "action");
form.Add(new StringContent(status.Filename), "uploaded_file");
form.Add(new StringContent(d.Path.FileName.ToString()), "original_file");
msg.Content = form;
using var result = await _client.SendAsync(msg);
if (!result.IsSuccessStatusCode)
throw new HttpException(result);
}
private async Task<FileStatusResult> WaitForFileStatus(ChunkStatusResult chunkStatus)
{
while (true)
{
_logger.LogInformation("Checking file status of {Uuid}", chunkStatus.UUID);
var data = await _client.GetFromJsonAsync<FileStatusResult>(
$"https://upload.nexusmods.com/uploads/check_status?id={chunkStatus.UUID}");
if (data!.FileChunksAssembled)
return data;
await Task.Delay(TimeSpan.FromSeconds(5));
}
}
public async Task<bool> IsPremium(CancellationToken token)
{
var validated = await ValidateCached(token);
return validated.info.IsPremium;
}
}