using System.Linq;

namespace DataFileAnalyzer
{
    public class OrphanDetectionOperation : UpdateOperation
    {
        public static string[] SkippedExtensions = 
        {
            "isc", 
            "act", 
            "frt", 
            "wav", 
            "tfi", 
            "asc", 
            "pck", 
            "wwu", 
        };

        /// <summary>
        /// Constructor
        /// </summary>
        public OrphanDetectionOperation(FileUpdater _updater, string _filePath)
            : base(_updater, _filePath)
        {
        }

        public override void Run()
        {
            // Nothing to do. 
            SetProgress(States.WaitUpdate);
        }

        /// <summary>
        /// Update the library with the computed dependencies
        /// </summary>
        public override void UpdateLibrary()
        {
            string extension = UAF.PathUtils.GetExtension(NormalizedFilePath);
            if (!SkippedExtensions.Contains(extension))
            {
                DataFile dataFile = m_library.GetFile(NormalizedFilePath);
                if (dataFile != null)
                {
                    if (dataFile.Parents.Count == 0)
                    {
                        dataFile.AddWarning(DataFileError.Codes.Orphan);
                    }
                    else
                    {
                        dataFile.RemoveWarning(DataFileError.Codes.Orphan);
                    }
                }
            }

            SetProgress(States.Finished);
        }
    }
}