using System.Collections.Generic;
using System.IO;
using System.Linq;
using LCU.API.Collections.RepoApi.Configuration;
using Serilog;

namespace LCU.API.Collections.RepoApi.Services.AutoIms
{
    public class AutoImsDownloaderService : IAutoImsDownloaderService
    {
        private readonly RepoApiConfiguration _configuration;
        private readonly IAuctionFtpClientService _auctionFtpClientService;

        public AutoImsDownloaderService(IAuctionFtpClientService auctionFtpClientService,
            RepoApiConfiguration configuration)
        {
            _configuration = configuration;
            _auctionFtpClientService = auctionFtpClientService;
        }

        public Dictionary<FileInfo, string> DownLoadAuctionFiles()
        {
            var fileResults = _auctionFtpClientService.Download();
            return fileResults;
        }

        public Dictionary<FileInfo, string> CombineWithLocalFiles(Dictionary<FileInfo, string> fileResults)
        {
            // check if there are any files in the folder already that are not in our downloaded list. 
            string[] fileEntries = Directory.GetFiles(_configuration.LocalDirectoryPath);

            foreach (string file in fileEntries)
            {
                var newFile = new FileInfo(file);
                Log.Information($"Auto IMS Job Added file: {file}");

                if (fileResults.Keys.All(x => x.Name != newFile.Name))
                {
                    fileResults.Add(newFile, "success");
                }
            }

            return fileResults;
        }

        public IEnumerable<FileInfo> ConvertToFileList(Dictionary<FileInfo, string> fileResults)
        {
            if (fileResults.Any(x => x.Value != "success"))
            {
                foreach (var file in fileResults.Where(x => x.Value != "success"))
                {
                    Log.Information($"File Downloads failed: {file.Key} - {file.Value}");
                }
            }

            if (fileResults.Any(x => x.Value == "success"))
            {
                var ascendingOrderOfFiles = fileResults.Where(x => x.Value == "success")
                    .OrderBy(x => x.Key.LastWriteTime).Select(x => x.Key).ToList();
                return ascendingOrderOfFiles;
            }

            Log.Information("No files found from AutoIMS.");
            return new List<FileInfo>();
        }
    }
}