//
// DirectoryArtistImage.cs
//
// Author:
//   Jacob Johnston (jacobj@inchoatethoughts.com)
//
// Copyright (C) 2009 Jacob Johnston
// 
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as 
// published by the Free Software Foundation, either version 3 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 Lesser 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.IO;
using ZenLibrary.RuleBase;

namespace ZenLibrary.Rules
{
    /// <summary>
    /// This rule scans a directory for the presence of an artist image
    /// as specified by a list of file names or file search strings.
    /// </summary>
    class DirectoryArtistImage : ConfigurableRule
    {
        private string artistImageFileCombinedString = "Artist.JPG;Artist.JPEG;Artist.PNG";

        public override string Name 
        {
            get { return "Directory Has Artist Image"; }
        }

        public override void Configure()
        {
            char[] splitChars = { ';' };
            DirectoryArtistImageConfig configWindow = new DirectoryArtistImageConfig();
            string[] artFiles = artistImageFileCombinedString.Split(splitChars);
            foreach (string file in artFiles)
                configWindow.FileList.Items.Add(file);
            if (configWindow.ShowDialog() == true)
            {
                artistImageFileCombinedString = string.Empty;
                foreach (string file in configWindow.FileList.Items)
                {
                    artistImageFileCombinedString += file + ";";
                }
            }
            Config.Instance.SaveConfig();     
        }

        public override TestType TestType
        {
            get { return TestType.DirectoryScan; }
        }

        protected override void WriteCustomConfigAttributes(System.Xml.XmlWriter writer)
        {
            writer.WriteAttributeString("ArtistImageFiles", artistImageFileCombinedString);
            base.WriteCustomConfigAttributes(writer);
        }

        protected override void ReadCustomConfigAttributes(System.Xml.XmlReader reader)
        {
            artistImageFileCombinedString = reader["ArtistImageFiles"];
            base.ReadCustomConfigAttributes(reader);
        }


        public override RuleTestResult RunTest(DirectoryInfo directoryInfo, FileInfo fileInfo)
        {
            bool foundImage = false;
            char[] splitChars = {';'};
            string[] imageFiles = artistImageFileCombinedString.Split(splitChars);
            foreach (string imageFileSearchString in imageFiles)
            {
                FileInfo[] files = directoryInfo.GetFiles(imageFileSearchString);
                if (files.Length > 0)
                {
                    foundImage = true;                   
                }
            }

            if (foundImage)
            {
                RuleTestResult result = new RuleTestResult();
                result.TestPassed = true;
                return result;
            }
            else
            {
                RuleTestResult result = new RuleTestResult();
                result.TestPassed = false;
                result.ResultPath = directoryInfo.FullName;
                result.RuleTestFailedString = string.Format("Directory \"{0}\" does not contain an artist image.", result.ResultPath);
                return result;
            }
        }
    }
}