refactor progress

packages/errors/src/ValidationError.tsx

@@ -0,0 +1,75 @@
+/*
+ * Copyright (C) 2026 Fluxer Contributors
+ *
+ * This file is part of Fluxer.
+ *
+ * Fluxer is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Fluxer is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with Fluxer. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+import {APIErrorCodes} from '@fluxer/constants/src/ApiErrorCodes';
+import {HttpStatus} from '@fluxer/constants/src/HttpConstants';
+import {FluxerError} from '@fluxer/errors/src/FluxerError';
+
+export interface FieldError {
+	field: string;
+	code: string;
+	message: string;
+}
+
+export interface ValidationErrorOptions {
+	code?: string;
+	message?: string;
+	errors: Array<FieldError>;
+}
+
+export class ValidationError extends FluxerError {
+	readonly errors: Array<FieldError>;
+
+	constructor(options: ValidationErrorOptions) {
+		super({
+			code: options.code ?? APIErrorCodes.VALIDATION_ERROR,
+			message: options.message ?? 'Validation failed',
+			status: HttpStatus.BAD_REQUEST,
+			data: {errors: options.errors},
+		});
+		this.name = 'ValidationError';
+		this.errors = options.errors;
+	}
+
+	override getResponse(): Response {
+		return new Response(
+			JSON.stringify({
+				code: this.code,
+				message: this.message,
+				errors: this.errors,
+			}),
+			{
+				status: this.status,
+				headers: {
+					'Content-Type': 'application/json',
+				},
+			},
+		);
+	}
+
+	static fromField(field: string, code: string, message: string): ValidationError {
+		return new ValidationError({
+			errors: [{field, code, message}],
+		});
+	}
+
+	static fromFields(errors: Array<FieldError>): ValidationError {
+		return new ValidationError({errors});
+	}
+}