/*
 * Greenshot - a free and open source screenshot tool
 * Copyright (C) 2007-2021 Thomas Braun, Jens Klingen, Robin Krom, Francis Noel
 *
 * For more information see: http://getgreenshot.org/
 * The Greenshot project is hosted on GitHub https://github.com/greenshot/greenshot
 *
 * 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 1 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, see <http://www.gnu.org/licenses/>.
 */
using System;
using System.Collections.Generic;
using System.IO;
using GreenshotPlugin.Core;
using GreenshotPlugin.Core.OAuth;
using GreenshotPlugin.IniFile;
using GreenshotPlugin.Interfaces;
using GreenshotPlugin.Interfaces.Plugin;
using Newtonsoft.Json;

namespace GreenshotDropboxPlugin {
	/// <summary>
	/// Description of DropboxUtils.
	/// </summary>
	public class DropboxUtils {
		private static readonly log4net.ILog Log = log4net.LogManager.GetLogger(typeof(DropboxUtils));
		private static readonly DropboxPluginConfiguration DropboxConfig = IniConfig.GetIniSection<DropboxPluginConfiguration>();

		private DropboxUtils() {
		}

		public static bool UploadToDropbox(ISurface surfaceToUpload, SurfaceOutputSettings outputSettings, ICaptureDetails captureDetails)
		{
            var oauth2Settings = new OAuth2Settings
            {
                AuthUrlPattern = "https://api.dropbox.com/oauth2/authorize?response_type=token&client_id={ClientId}&state={State}&redirect_uri={RedirectUrl}",
                TokenUrl = "https://api.dropbox.com/oauth2/token",
                RedirectUrl = "https://getgreenshot.org/authorize/dropbox",
                CloudServiceName = "Dropbox",
                ClientId = DropBoxCredentials.CONSUMER_KEY,
                ClientSecret = DropBoxCredentials.CONSUMER_SECRET,
                AuthorizeMode = OAuth2AuthorizeMode.JsonReceiver,
				RefreshToken = DropboxConfig.RefreshToken,
                AccessToken = DropboxConfig.AccessToken,
                AccessTokenExpires = DropboxConfig.AccessTokenExpires
			};
            try
			{
                string filename = Path.GetFileName(FilenameHelper.GetFilename(DropboxConfig.UploadFormat, captureDetails));
                SurfaceContainer image = new SurfaceContainer(surfaceToUpload, outputSettings, filename);

                IDictionary<string, object> arguments = new Dictionary<string, object>
                {
                    { "autorename", true },
                    { "mute", true },
                    { "path", "/" + filename.Replace(Path.DirectorySeparatorChar, '\\')}
                };
                IDictionary<string, object> headers = new Dictionary<string, object>
                {
                    { "Dropbox-API-Arg", JsonConvert.SerializeObject(arguments)}
                };
                var webRequest = OAuth2Helper.CreateOAuth2WebRequest(HTTPMethod.POST, "https://content.dropboxapi.com/2/files/upload", oauth2Settings);

                NetworkHelper.Post(webRequest, headers, image);
                var responseString = NetworkHelper.GetResponseAsString(webRequest);
                Log.DebugFormat("Upload response: {0}", responseString);
                var response = JsonConvert.DeserializeObject<IDictionary<string, string>>(responseString);
                return response.ContainsKey("id");
            }
            catch (Exception ex) {
				Log.Error("Upload error: ", ex);
				throw;
			} finally {
                DropboxConfig.RefreshToken = oauth2Settings.RefreshToken;
                DropboxConfig.AccessToken = oauth2Settings.AccessToken;
                DropboxConfig.AccessTokenExpires = oauth2Settings.AccessTokenExpires;
                DropboxConfig.IsDirty = true;
                IniConfig.Save();
            }
		}
	}
}