private async Task PrintFolderRecursively(FolderModel f, StreamWriter sw)
{
await sw.WriteLineAsync($"{f.name}: {f.total_size}");
foreach (var child in f.folders)
{
await PrintFolderRecursively(child, sw);
}
}
/// <summary>
/// Write just this folder and its files to the DB
/// </summary>
/// <param name="folder"></param>
/// <returns></returns>
public async Task Write(FolderModel folder)
{
using (var conn = new SQLiteConnection(_connection_string))
{
conn.Open();
var tran = conn.BeginTransaction();
try
{
// Insert the folder
var result = await conn.QueryAsync <long>("INSERT OR IGNORE INTO folders "
+ "(name, total_size, parent_folder_id) "
+ "VALUES (@name, @total_size, @parent_folder_id); "
+ "SELECT last_insert_rowid();", folder, tran, null, System.Data.CommandType.Text);
folder.id = result.FirstOrDefault();
// Assign the ID to all children and insert them
foreach (var file in folder.files)
{
file.parent_folder_id = folder.id;
var result2 = await conn.QueryAsync <long>("INSERT OR IGNORE INTO files "
+ "(name, parent_folder_id, size, hash, last_modified) "
+ "VALUES (@name, @parent_folder_id, @size, @hash, @last_modified);"
+ "SELECT last_insert_rowid();", file, tran, null, System.Data.CommandType.Text);
file.id = result2.FirstOrDefault();
}
// Update all the child folders
foreach (var subfolder in folder.folders)
{
await conn.ExecuteAsync("UPDATE folders SET parent_folder_id = @parent_folder_id WHERE id = @id;",
new { parent_folder_id = folder.id, id = subfolder.id }, tran, null, System.Data.CommandType.Text);
}
// We're done
tran.Commit();
}
catch (Exception ex)
{
Console.WriteLine(ex.ToString());
tran.Rollback();
}
}
}
public async Task <FolderModel> ScanFolder(string path)
{
FoldersFound++;
// Insert this folder
var folder = new FolderModel()
{
name = path,
files = new List <FileModel>(),
folders = new List <FolderModel>()
};
// Scan and capture problems
try
{
var this_dir = new DirectoryInfo(path);
// Insert all files
foreach (var f in this_dir.GetFiles())
{
// Ignore the filescan DB
if (!should_ignore(f.FullName))
{
var file = new FileModel()
{
name = f.Name,
size = f.Length,
last_modified = f.LastWriteTime.ToString("o"),
hash = null
};
folder.files.Add(file);
TrackFile(file);
FilesScanned++;
}
}
// Check all subfolders
var subfolder_tasks = (from d in this_dir.GetDirectories() where !should_ignore(d.FullName) select ScanFolder(d.FullName));
await Task.WhenAll(subfolder_tasks.ToArray());
foreach (var t in subfolder_tasks)
{
folder.folders.Add(t.Result);
}
}
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine($"Exception scanning {path}: {ex.Message}.");
}
// Update information about this folder, then save it to the database
folder.total_size =
(from f in folder.files select f.size).Sum()
+ (from sub in folder.folders select folder.total_size).Sum();
// Here's the folder we scanned
FoldersScanned++;
var ts = DateTime.UtcNow - LastPrintTime;
if (ts.TotalMilliseconds > 100)
{
Console.Write($"\rScanned {FoldersScanned}/{FoldersFound} folders, found {FilesScanned} files...");
LastPrintTime = DateTime.UtcNow;
}
return(folder);
}
public async Task Begin()
{
RootFolder = await ScanFolder(_root_path);
}