/*
 * 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 {
	InputValidationError,
	type LocalizedValidationError,
} from '@fluxer/errors/src/domains/core/InputValidationError';
import type {ValidationError} from '@fluxer/errors/src/domains/core/ValidationError';
import {resolveValidationErrorCode} from '@fluxer/validation/src/shared/ValidationErrorCodeUtils';
import {extractValidatorIssueVariables} from '@fluxer/validation/src/validator/ValidatorIssueVariables';
import type {ZodError} from 'zod';

type ZodValidationIssue = ZodError['issues'][number];

function getIssuePath(issue: ZodValidationIssue): string {
	if (issue.path.length === 0) {
		return 'root';
	}
	return issue.path.join('.');
}

export function createInputValidationError(issues: Array<ZodValidationIssue>): InputValidationError {
	const errors: Array<ValidationError> = [];
	const localizedErrors: Array<LocalizedValidationError> = [];

	for (const issue of issues) {
		const path = getIssuePath(issue);
		const code = resolveValidationErrorCode(issue.message);
		const variables = extractValidatorIssueVariables(issue);

		errors.push({path, message: code, code});
		localizedErrors.push({path, code, variables});
	}

	return new InputValidationError(errors, localizedErrors);
}
