using Dicom;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using Vinno.FIS.Sonopost.Common;
using Vinno.FIS.Sonopost.Helpers;
using Vinno.FIS.Sonopost.Managers;
using Vinno.FIS.Sonopost.Managers.Interfaces;
using Vinno.IUS.Common.Utilities.Executors;

namespace Vinno.FIS.Sonopost.Features.Dicom
{
    internal abstract class DicomOperateQueue
    {
        private readonly SequenceExecutor<DicomFile> _dicomFilesQueue;

        private readonly SequenceExecutor<VidInfo> _vidInfoQueue;

        protected IConfigManager _configManager;

        public DicomOperateQueue(string name)
        {
            _dicomFilesQueue = new SequenceExecutor<DicomFile>(name);
            _vidInfoQueue = new SequenceExecutor<VidInfo>(name);
            _configManager = AppManager.Instance.GetManager<IConfigManager>();
        }

        public void Enqueue(DicomFile dicomFile)
        {
            _dicomFilesQueue.Add(DoWork, dicomFile);
        }

        public void Enqueue(VidInfo vidInfo)
        {
            _vidInfoQueue.Add(DoWork, vidInfo);
        }

        protected abstract bool DoWork(DicomFile arg);

        protected abstract bool DoWork(VidInfo arg);

        protected string Save(string folderName, DicomFile file, string newGuid, string dateFolder = null)
        {
            var targetFolder = Path.Combine(SonopostConstants.DataFolder, folderName);
            if (dateFolder != null)
            {
                targetFolder = Path.Combine(SonopostConstants.DataFolder, folderName, dateFolder);
            }
            DirectoryHelper.CreateDirectory(targetFolder);
            var dicomFileName = Path.Combine(targetFolder, $"{newGuid}.{SonopostConstants.DicomFileName}");
            DicomHelper.Save(dicomFileName, file);
            return dicomFileName;
        }

        protected string Save(string folderName, string vidFilePath, string newGuid, string dateFolder = null)
        {
            var targetFolder = Path.Combine(SonopostConstants.DataFolder, folderName);
            if (dateFolder != null)
            {
                targetFolder = Path.Combine(SonopostConstants.DataFolder, folderName, dateFolder);
            }
            DirectoryHelper.CreateDirectory(targetFolder);
            var vidFileName = Path.Combine(targetFolder, $"{newGuid}.{SonopostConstants.VidFileName}");
            try
            {
                if (File.Exists(vidFilePath))
                {
                    File.Move(vidFilePath, vidFileName);
                    return vidFileName;
                }
                else
                {
                    return null;
                }
            }
            catch (Exception ex)
            {
                IUS.Common.Log.Logger.WriteLineError($"Save Original Vid File Error:{ex}");
                return null;
            }
        }

        protected void DeleteFiles(IEnumerable<FileInfo> files)
        {
            int skipLen = 10;
            if (files.Sum(t => t.Length) > 2147483648)//2GB
            {
                skipLen = 2;
            }
            if (files.Count() <= skipLen) return;
            foreach (var item in files.Skip(skipLen))
            {
                item.Delete();
            }
        }
    }
}