public Guid Scan()
{
var searchedFiles = Directory.EnumerateFiles(this.path, "*.*", SearchOption.AllDirectories);
var scanId = Guid.NewGuid();
foreach (var file in searchedFiles)
{
if (FileShouldBeExcluded(file)) continue;
var info = new FileInfo(file);
this.files.Add(new DataFile { ScanId = scanId, FileNameFull = file, Size = info.Length });
}
_total = this.files.Count();
using (var context = new DatabaseContext())
{
var skip = 0;
var toSave = this.files.Take(100);
while (toSave != null && toSave.Count() > 0)
{
context.SearchFiles.AddRange(toSave);
context.SaveChanges();
skip = skip + 100;
_current = _current + 100;
toSave = this.files.Skip(skip).Take(100);
}
}
return scanId;
}
public Guid Hash(Guid scanId)
{
_current = 0;
using (var context = new DatabaseContext())
{
var allUnHashedfiles = context.SearchFiles.Where(item => item.ScanId == scanId && string.IsNullOrEmpty(item.Hash)).OrderBy(ord => ord.Size);
_total = allUnHashedfiles.Count();
var skip = 0;
var toSave = allUnHashedfiles.Take(100);
while (toSave != null && toSave.Count() > 0)
{
Parallel.ForEach(toSave, (file) =>
{
var hash = FileHashCreator.GetMD5Hash(file.FileNameFull);
file.Hash = hash;
_current++;
});
context.SaveChanges();
skip = skip + 100;
toSave = allUnHashedfiles.Skip(skip).Take(100);
}
}
return scanId;
}
public void Deny(ComparisonPair currentComparison)
{
using (var context = new DatabaseContext())
{
var item = context.DuplicateFiles.Find(currentComparison.DuplicateFile.Id);
item.NotDuplicate = true;
context.SaveChanges();
}
}
private void PersistScan()
{
using (var context = new DatabaseContext())
{
context.DuplicationOwners.AddRange(this.state.Where(suspect => suspect.Owner != null).Select(item => item.Owner));
context.SaveChanges();
}
}
public ComparisonPair NextComparison()
{
using (var context = new DatabaseContext())
{
var dup = context.DuplicateFiles.Include("Datafile").FirstOrDefault(item => item.ScanId == this.scanId && !item.Confirmed && !item.NotDuplicate);
if (dup == null) return null;
var toFind = context.DuplicationOwners.Include("Owner").FirstOrDefault(owner => owner.DuplicateFiles.Any(suspect => suspect.DataFile.Id == dup.DataFileId));
return new ComparisonPair(toFind, dup);
}
}
public static Guid LastScanId()
{
using (var context = new DatabaseContext())
{
return context.SearchFiles.OrderByDescending(item => item.Id).First().ScanId;
}
}
private void BuildInitialState()
{
using (var context = new DatabaseContext())
{
this.state = context.SearchFiles.Where(item => item.ScanId == this.scanId).Select(res => new ScanState { DataFile = res }).ToList();
}
}
