#region License Information (GPL v3)
/*
ShareX - A program that allows you to take screenshots and share any file type
Copyright (C) 2007-2015 ShareX Developers
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
Optionally you can also view the license at .
*/
#endregion License Information (GPL v3)
using Newtonsoft.Json;
using ShareX.HelpersLib;
using ShareX.UploadersLib.HelperClasses;
using System.Collections.Generic;
namespace ShareX.UploadersLib.URLShorteners
{
public class GoogleURLShortener : URLShortener, IOAuth2
{
public AccountType UploadMethod { get; set; }
public string AnonymousKey { get; set; }
public OAuth2Info AuthInfo { get; set; }
public GoogleURLShortener(AccountType uploadMethod, string anonymousKey, OAuth2Info oauth)
{
UploadMethod = uploadMethod;
AnonymousKey = anonymousKey;
AuthInfo = oauth;
}
public GoogleURLShortener(string anonymousKey)
{
UploadMethod = AccountType.Anonymous;
AnonymousKey = anonymousKey;
}
public GoogleURLShortener(OAuth2Info oauth)
{
UploadMethod = AccountType.User;
AuthInfo = oauth;
}
public string GetAuthorizationURL()
{
return string.Format("https://accounts.google.com/o/oauth2/auth?response_type={0}&client_id={1}&redirect_uri={2}&scope={3}",
"code", AuthInfo.Client_ID, "urn:ietf:wg:oauth:2.0:oob", URLHelpers.URLEncode("https://www.googleapis.com/auth/urlshortener"));
}
public bool GetAccessToken(string code)
{
Dictionary args = new Dictionary();
args.Add("code", code);
args.Add("client_id", AuthInfo.Client_ID);
args.Add("client_secret", AuthInfo.Client_Secret);
args.Add("redirect_uri", "urn:ietf:wg:oauth:2.0:oob");
args.Add("grant_type", "authorization_code");
string response = SendRequest(HttpMethod.POST, "https://accounts.google.com/o/oauth2/token", args);
if (!string.IsNullOrEmpty(response))
{
OAuth2Token token = JsonConvert.DeserializeObject(response);
if (token != null && !string.IsNullOrEmpty(token.access_token))
{
token.UpdateExpireDate();
AuthInfo.Token = token;
return true;
}
}
return false;
}
public bool RefreshAccessToken()
{
if (OAuth2Info.CheckOAuth(AuthInfo) && !string.IsNullOrEmpty(AuthInfo.Token.refresh_token))
{
Dictionary args = new Dictionary();
args.Add("refresh_token", AuthInfo.Token.refresh_token);
args.Add("client_id", AuthInfo.Client_ID);
args.Add("client_secret", AuthInfo.Client_Secret);
args.Add("grant_type", "refresh_token");
string response = SendRequest(HttpMethod.POST, "https://accounts.google.com/o/oauth2/token", args);
if (!string.IsNullOrEmpty(response))
{
OAuth2Token token = JsonConvert.DeserializeObject(response);
if (token != null && !string.IsNullOrEmpty(token.access_token))
{
token.UpdateExpireDate();
string refresh_token = AuthInfo.Token.refresh_token;
AuthInfo.Token = token;
AuthInfo.Token.refresh_token = refresh_token;
return true;
}
}
}
return false;
}
public bool CheckAuthorization()
{
if (OAuth2Info.CheckOAuth(AuthInfo))
{
if (AuthInfo.Token.IsExpired && !RefreshAccessToken())
{
Errors.Add("Refresh access token failed.");
return false;
}
}
else
{
Errors.Add("Login is required.");
return false;
}
return true;
}
public override UploadResult ShortenURL(string url)
{
UploadResult result = new UploadResult { URL = url };
if (!string.IsNullOrEmpty(url))
{
string query;
switch (UploadMethod)
{
default:
case AccountType.Anonymous:
query = string.Format("https://www.googleapis.com/urlshortener/v1/url?key={0}", AnonymousKey);
break;
case AccountType.User:
if (!CheckAuthorization())
{
return null;
}
query = string.Format("https://www.googleapis.com/urlshortener/v1/url?access_token={0}", AuthInfo.Token.access_token);
break;
}
string json = string.Format("{{\"longUrl\":\"{0}\"}}", url);
result.Response = SendRequestJSON(query, json);
if (!string.IsNullOrEmpty(result.Response))
{
GoogleURLShortenerResponse response = JsonConvert.DeserializeObject(result.Response);
if (response != null)
{
result.ShortenedURL = response.id;
}
}
}
return result;
}
}
public class GoogleURLShortenerResponse
{
public string kind { get; set; }
public string id { get; set; }
public string longUrl { get; set; }
public string status { get; set; }
}
}