/*
 * Greenshot - a free and open source screenshot tool
 * Copyright (C) 2007-2012  Thomas Braun, Jens Klingen, Robin Krom
 * 
 * For more information see: http://getgreenshot.org/
 * The Greenshot project is hosted on Sourceforge: http://sourceforge.net/projects/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.Drawing;
using System.IO;
using System.Windows.Forms;

using Greenshot.Configuration;
using GreenshotPlugin.Core;
using Greenshot.Plugin;
using Greenshot.Helpers;
using Greenshot.IniFile;
using GreenshotPlugin.Controls;

namespace Greenshot.Destinations {
	/// <summary>
	/// Description of FileSaveAsDestination.
	/// </summary>
	public class FileDestination : AbstractDestination {
		private static log4net.ILog LOG = log4net.LogManager.GetLogger(typeof(FileDestination));
		private static CoreConfiguration conf = IniConfig.GetIniSection<CoreConfiguration>();
		public const string DESIGNATION = "FileNoDialog";

		public override string Designation {
			get {
				return DESIGNATION;
			}
		}

		public override string Description {
			get {
				return Language.GetString(LangKey.quicksettings_destination_file);
			}
		}

		public override int Priority {
			get {
				return 0;
			}
		}

		public override Keys EditorShortcutKeys {
			get {
				return Keys.Control | Keys.S;
			}
		}
		
		public override Image DisplayIcon {
			get {
				return GreenshotPlugin.Core.GreenshotResources.getImage("Save.Image");
			}
		}

		public override ExportInformation ExportCapture(bool manuallyInitiated, ISurface surface, ICaptureDetails captureDetails) {
			ExportInformation exportInformation = new ExportInformation(this.Designation, this.Description);
			bool outputMade;
            bool overwrite;
            string fullPath;
			// Get output settings from the configuration
			OutputSettings outputSettings = new OutputSettings();

			if (captureDetails != null && captureDetails.Filename != null) {
                // As we save a pre-selected file, allow to overwrite.
                overwrite = true;
                LOG.InfoFormat("Using previous filename");
                fullPath = captureDetails.Filename;
				outputSettings.Format = ImageOutput.FormatForFilename(fullPath);
            } else {
                LOG.InfoFormat("Creating new filename");
                string pattern = conf.OutputFileFilenamePattern;
                if (string.IsNullOrEmpty(pattern)) {
                    pattern = "greenshot ${capturetime}";
                }
                string filename = FilenameHelper.GetFilenameFromPattern(pattern, conf.OutputFileFormat, captureDetails);
                string filepath = FilenameHelper.FillVariables(conf.OutputFilePath, false);
                fullPath = Path.Combine(filepath, filename);
                // As we generate a file, the configuration tells us if we allow to overwrite
                overwrite = conf.OutputFileAllowOverwrite;
            }
			if (conf.OutputFilePromptQuality) {
				QualityDialog qualityDialog = new QualityDialog(outputSettings);
				qualityDialog.ShowDialog();
			}

			// Catching any exception to prevent that the user can't write in the directory.
			// This is done for e.g. bugs #2974608, #2963943, #2816163, #2795317, #2789218, #3004642
			try {
				ImageOutput.Save(surface, fullPath, overwrite, outputSettings, conf.OutputFileCopyPathToClipboard);
				outputMade = true;
			} catch (ArgumentException ex1) {
				// Our generated filename exists, display 'save-as'
				LOG.InfoFormat("Not overwriting: {0}", ex1.Message);
				// when we don't allow to overwrite present a new SaveWithDialog
				fullPath = ImageOutput.SaveWithDialog(surface, captureDetails);
				outputMade = (fullPath != null);
			} catch (Exception ex2) {
				LOG.Error("Error saving screenshot!", ex2);
				// Show the problem
				MessageBox.Show(Language.GetString(LangKey.error_save), Language.GetString(LangKey.error));
				// when save failed we present a SaveWithDialog
				fullPath = ImageOutput.SaveWithDialog(surface, captureDetails);
				outputMade = (fullPath != null);
			}
			// Don't overwite filename if no output is made
			if (outputMade) {
				exportInformation.ExportMade = outputMade;
				exportInformation.Filepath = fullPath;
				captureDetails.Filename = fullPath;
			}

			ProcessExport(exportInformation, surface);
			return exportInformation;
		}
	}
}