unsupervised-scheduler/src/Registration/AnswerRepository.php

<?php
declare(strict_types=1);

namespace Unsupervised\Schedular\Registration;

class AnswerRepository {

	private string $table;

	public function __construct( private \wpdb $db ) {
		$this->table = $db->prefix . 'us_question_answers';
	}

	public function insert( Answer $answer ): int {
		$this->db->insert(
			$this->table,
			[
				'question_id'       => $answer->questionId,
				'registration_type' => $answer->registrationType,
				'registration_id'   => $answer->registrationId,
				'student_id'        => $answer->studentId,
				'answer_value'      => $answer->answerValue,
				'created_at'        => current_time( 'mysql' ),
			],
			[ '%d', '%s', '%d', '%d', '%s', '%s' ]
		);

		return $this->db->insert_id;
	}

	/**
	 * Persist a batch of answers for a single registration.
	 *
	 * @param list<Answer> $answers
	 * @return list<int> Inserted answer IDs.
	 */
	public function insertMany( array $answers ): array {
		return array_map( fn( Answer $answer ): int => $this->insert( $answer ), $answers );
	}

	/**
	 * Find all answers attached to a registration (lesson or enrolment).
	 *
	 * @return list<Answer>
	 */
	public function findByRegistration( string $registrationType, int $registrationId ): array {
		$rows = $this->db->get_results(
			$this->db->prepare(
				"SELECT * FROM {$this->table} WHERE registration_type = %s AND registration_id = %d ORDER BY id ASC",
				$registrationType,
				$registrationId
			)
		);

		return array_map( Answer::fromRow( ... ), $rows ?? [] );
	}
}