Add initial project files

apps/backend/app/exceptions/file_manager_exceptions.ts

@@ -0,0 +1,55 @@
+import ApiException from '#exceptions/api_exception'
+
+export class FilenameMissingExtensionException extends ApiException {
+  static status = 400
+  static code = 'E_FILE_NAME_MISSING_EXTENSION'
+
+  constructor(message: string = 'File name missing extension') {
+    super(message)
+  }
+}
+
+export class EntryNameNotChangedException extends ApiException {
+  static status = 400
+  static code = 'E_ENTRY_NAME_NOT_CHANGED'
+
+  constructor(message: string = 'Entry name was not changed') {
+    super(message)
+  }
+}
+
+export class EntryExistsException extends ApiException {
+  static status = 400
+  static code = 'E_ENTRY_ALREADY_EXISTS'
+
+  constructor(message: string = 'Entry already exists') {
+    super(message)
+  }
+}
+
+export class DirExistsException extends ApiException {
+  static status = 400
+  static code = 'E_DIRECTORY_ALREADY_EXISTS'
+
+  constructor(message: string = 'Directory already exists') {
+    super(message)
+  }
+}
+
+export class FileNotFoundException extends ApiException {
+  static status = 404
+  static code = 'E_FILE_NOT_FOUND'
+
+  constructor(message: string = 'File not found') {
+    super(message)
+  }
+}
+
+export class DirNotFoundException extends ApiException {
+  static status = 404
+  static code = 'E_DIR_NOT_FOUND'
+
+  constructor(message: string = 'Directory not found') {
+    super(message)
+  }
+}