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371
RedditSharp/Reddit.cs
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371
RedditSharp/Reddit.cs
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using Newtonsoft.Json;
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using Newtonsoft.Json.Linq;
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using System;
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using System.Linq;
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using System.Net;
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using System.Security.Authentication;
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using RedditSharp.Things;
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using System.Threading.Tasks;
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namespace RedditSharp
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{
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/// <summary>
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/// Class to communicate with Reddit.com
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/// </summary>
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public class Reddit
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{
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#region Constant Urls
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private const string SslLoginUrl = "https://ssl.reddit.com/api/login";
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private const string LoginUrl = "/api/login/username";
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private const string UserInfoUrl = "/user/{0}/about.json";
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private const string MeUrl = "/api/me.json";
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private const string OAuthMeUrl = "/api/v1/me.json";
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private const string SubredditAboutUrl = "/r/{0}/about.json";
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private const string ComposeMessageUrl = "/api/compose";
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private const string RegisterAccountUrl = "/api/register";
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private const string GetThingUrl = "/api/info.json?id={0}";
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private const string GetCommentUrl = "/r/{0}/comments/{1}/foo/{2}.json";
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private const string GetPostUrl = "{0}.json";
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private const string DomainUrl = "www.reddit.com";
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private const string OAuthDomainUrl = "oauth.reddit.com";
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private const string SearchUrl = "/search.json?q={0}&restrict_sr=off&sort={1}&t={2}";
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private const string UrlSearchPattern = "url:'{0}'";
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#endregion
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#region Static Variables
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static Reddit()
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{
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WebAgent.UserAgent = "";
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WebAgent.RateLimit = WebAgent.RateLimitMode.Pace;
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WebAgent.Protocol = "http";
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WebAgent.RootDomain = "www.reddit.com";
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}
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#endregion
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internal readonly IWebAgent _webAgent;
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/// <summary>
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/// Captcha solver instance to use when solving captchas.
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/// </summary>
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public ICaptchaSolver CaptchaSolver;
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/// <summary>
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/// The authenticated user for this instance.
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/// </summary>
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public AuthenticatedUser User { get; set; }
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/// <summary>
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/// Sets the Rate Limiting Mode of the underlying WebAgent
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/// </summary>
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public WebAgent.RateLimitMode RateLimit
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{
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get { return WebAgent.RateLimit; }
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set { WebAgent.RateLimit = value; }
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}
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internal JsonSerializerSettings JsonSerializerSettings { get; set; }
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/// <summary>
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/// Gets the FrontPage using the current Reddit instance.
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/// </summary>
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public Subreddit FrontPage
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{
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get { return Subreddit.GetFrontPage(this); }
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}
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/// <summary>
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/// Gets /r/All using the current Reddit instance.
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/// </summary>
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public Subreddit RSlashAll
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{
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get { return Subreddit.GetRSlashAll(this); }
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}
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public Reddit()
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{
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JsonSerializerSettings = new JsonSerializerSettings
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{
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CheckAdditionalContent = false,
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DefaultValueHandling = DefaultValueHandling.Ignore
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};
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_webAgent = new WebAgent();
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CaptchaSolver = new ConsoleCaptchaSolver();
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}
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public Reddit(WebAgent.RateLimitMode limitMode) : this()
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{
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WebAgent.UserAgent = "";
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WebAgent.RateLimit = limitMode;
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WebAgent.RootDomain = "www.reddit.com";
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}
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public Reddit(string username, string password, bool useSsl = true) : this()
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{
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LogIn(username, password, useSsl);
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}
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public Reddit(string accessToken) : this()
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{
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WebAgent.Protocol = "https";
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WebAgent.RootDomain = OAuthDomainUrl;
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_webAgent.AccessToken = accessToken;
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InitOrUpdateUser();
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}
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/// <summary>
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/// Logs in the current Reddit instance.
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/// </summary>
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/// <param name="username">The username of the user to log on to.</param>
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/// <param name="password">The password of the user to log on to.</param>
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/// <param name="useSsl">Whether to use SSL or not. (default: true)</param>
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/// <returns></returns>
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public AuthenticatedUser LogIn(string username, string password, bool useSsl = true)
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{
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if (Type.GetType("Mono.Runtime") != null)
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ServicePointManager.ServerCertificateValidationCallback = (s, c, ch, ssl) => true;
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_webAgent.Cookies = new CookieContainer();
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HttpWebRequest request;
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if (useSsl)
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request = _webAgent.CreatePost(SslLoginUrl);
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else
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request = _webAgent.CreatePost(LoginUrl);
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var stream = request.GetRequestStream();
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if (useSsl)
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{
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_webAgent.WritePostBody(stream, new
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{
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user = username,
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passwd = password,
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api_type = "json"
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});
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}
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else
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{
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_webAgent.WritePostBody(stream, new
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{
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user = username,
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passwd = password,
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api_type = "json",
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op = "login"
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});
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}
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stream.Close();
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var response = (HttpWebResponse)request.GetResponse();
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var result = _webAgent.GetResponseString(response.GetResponseStream());
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var json = JObject.Parse(result)["json"];
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if (json["errors"].Count() != 0)
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throw new AuthenticationException("Incorrect login.");
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InitOrUpdateUser();
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return User;
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}
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public RedditUser GetUser(string name)
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{
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var request = _webAgent.CreateGet(string.Format(UserInfoUrl, name));
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var response = request.GetResponse();
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var result = _webAgent.GetResponseString(response.GetResponseStream());
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var json = JObject.Parse(result);
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return new RedditUser().Init(this, json, _webAgent);
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}
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/// <summary>
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/// Initializes the User property if it's null,
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/// otherwise replaces the existing user object
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/// with a new one fetched from reddit servers.
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/// </summary>
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public void InitOrUpdateUser()
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{
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var request = _webAgent.CreateGet(string.IsNullOrEmpty(_webAgent.AccessToken) ? MeUrl : OAuthMeUrl);
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var response = (HttpWebResponse)request.GetResponse();
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var result = _webAgent.GetResponseString(response.GetResponseStream());
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var json = JObject.Parse(result);
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User = new AuthenticatedUser().Init(this, json, _webAgent);
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}
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#region Obsolete Getter Methods
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[Obsolete("Use User property instead")]
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public AuthenticatedUser GetMe()
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{
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return User;
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}
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#endregion Obsolete Getter Methods
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public Subreddit GetSubreddit(string name)
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{
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if (name.StartsWith("r/"))
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name = name.Substring(2);
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if (name.StartsWith("/r/"))
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name = name.Substring(3);
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return GetThing<Subreddit>(string.Format(SubredditAboutUrl, name));
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}
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/// <summary>
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/// Returns the subreddit.
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/// </summary>
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/// <param name="name">The name of the subreddit</param>
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/// <returns>The Subreddit by given name</returns>
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public async Task<Subreddit> GetSubredditAsync(string name)
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{
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if (name.StartsWith("r/"))
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name = name.Substring(2);
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if (name.StartsWith("/r/"))
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name = name.Substring(3);
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return await GetThingAsync<Subreddit>(string.Format(SubredditAboutUrl, name));
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}
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public Domain GetDomain(string domain)
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{
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if (!domain.StartsWith("http://") && !domain.StartsWith("https://"))
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domain = "http://" + domain;
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var uri = new Uri(domain);
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return new Domain(this, uri, _webAgent);
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}
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public JToken GetToken(Uri uri)
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{
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var url = uri.AbsoluteUri;
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if (url.EndsWith("/"))
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url = url.Remove(url.Length - 1);
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var request = _webAgent.CreateGet(string.Format(GetPostUrl, url));
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var response = request.GetResponse();
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var data = _webAgent.GetResponseString(response.GetResponseStream());
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var json = JToken.Parse(data);
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return json[0]["data"]["children"].First;
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}
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public Post GetPost(Uri uri)
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{
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return new Post().Init(this, GetToken(uri), _webAgent);
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}
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public void ComposePrivateMessage(string subject, string body, string to, string captchaId = "", string captchaAnswer = "")
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{
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if (User == null)
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throw new Exception("User can not be null.");
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var request = _webAgent.CreatePost(ComposeMessageUrl);
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_webAgent.WritePostBody(request.GetRequestStream(), new
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{
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api_type = "json",
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subject,
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text = body,
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to,
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uh = User.Modhash,
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iden = captchaId,
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captcha = captchaAnswer
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});
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var response = request.GetResponse();
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var result = _webAgent.GetResponseString(response.GetResponseStream());
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var json = JObject.Parse(result);
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ICaptchaSolver solver = CaptchaSolver; // Prevent race condition
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if (json["json"]["errors"].Any() && json["json"]["errors"][0][0].ToString() == "BAD_CAPTCHA" && solver != null)
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{
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captchaId = json["json"]["captcha"].ToString();
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CaptchaResponse captchaResponse = solver.HandleCaptcha(new Captcha(captchaId));
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if (!captchaResponse.Cancel) // Keep trying until we are told to cancel
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ComposePrivateMessage(subject, body, to, captchaId, captchaResponse.Answer);
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}
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}
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/// <summary>
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/// Registers a new Reddit user
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/// </summary>
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/// <param name="userName">The username for the new account.</param>
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/// <param name="passwd">The password for the new account.</param>
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/// <param name="email">The optional recovery email for the new account.</param>
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/// <returns>The newly created user account</returns>
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public AuthenticatedUser RegisterAccount(string userName, string passwd, string email = "")
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{
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var request = _webAgent.CreatePost(RegisterAccountUrl);
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_webAgent.WritePostBody(request.GetRequestStream(), new
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{
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api_type = "json",
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email = email,
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passwd = passwd,
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passwd2 = passwd,
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user = userName
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});
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var response = request.GetResponse();
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var result = _webAgent.GetResponseString(response.GetResponseStream());
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var json = JObject.Parse(result);
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return new AuthenticatedUser().Init(this, json, _webAgent);
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// TODO: Error
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}
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public Thing GetThingByFullname(string fullname)
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{
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var request = _webAgent.CreateGet(string.Format(GetThingUrl, fullname));
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var response = request.GetResponse();
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var data = _webAgent.GetResponseString(response.GetResponseStream());
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var json = JToken.Parse(data);
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return Thing.Parse(this, json["data"]["children"][0], _webAgent);
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}
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public Comment GetComment(string subreddit, string name, string linkName)
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{
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try
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{
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if (linkName.StartsWith("t3_"))
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linkName = linkName.Substring(3);
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if (name.StartsWith("t1_"))
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name = name.Substring(3);
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var request = _webAgent.CreateGet(string.Format(GetCommentUrl, subreddit, linkName, name));
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var response = request.GetResponse();
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var data = _webAgent.GetResponseString(response.GetResponseStream());
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var json = JToken.Parse(data);
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return Thing.Parse(this, json[1]["data"]["children"][0], _webAgent) as Comment;
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}
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catch (WebException)
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{
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return null;
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}
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}
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public Listing<T> SearchByUrl<T>(string url) where T : Thing
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{
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var urlSearchQuery = string.Format(UrlSearchPattern, url);
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return Search<T>(urlSearchQuery);
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}
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public Listing<T> Search<T>(string query) where T : Thing
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{
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return new Listing<T>(this, string.Format(SearchUrl, query, "relevance", "all"), _webAgent);
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}
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#region Helpers
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protected async internal Task<T> GetThingAsync<T>(string url) where T : Thing
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{
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var request = _webAgent.CreateGet(url);
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var response = request.GetResponse();
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var data = _webAgent.GetResponseString(response.GetResponseStream());
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var json = JToken.Parse(data);
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var ret = await Thing.ParseAsync(this, json, _webAgent);
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return (T)ret;
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}
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protected internal T GetThing<T>(string url) where T : Thing
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{
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var request = _webAgent.CreateGet(url);
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var response = request.GetResponse();
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var data = _webAgent.GetResponseString(response.GetResponseStream());
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var json = JToken.Parse(data);
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return (T)Thing.Parse(this, json, _webAgent);
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}
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#endregion
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}
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}
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