<?php
/**
 * Quiz Builder Helpers.
 *
 * Used to provide proper data to Quiz Builder app.
 *
 * @package LearnDash
 */

namespace LearnDash\Admin\QuizBuilderHelpers;

/**
 * Provide Quiz Data to Builder.
 *
 * @param Object $data The data passed down to front-end.
 * @return Object
 */
function get_quiz_data( $data ) {

	$quiz_id = get_the_ID();
	$screen  = get_current_screen();
	if ( ! is_admin() || 'post' !== $screen->base || 'sfwd-quiz' !== get_post_type( $quiz_id ) ) {
		return $data;
	}

	if ( ! empty( $quiz_id ) ) {
		// Get quiz's questions.
		$questions_ids    = array_keys( learndash_get_quiz_questions( $quiz_id ) );
		$output_questions = [];

		// Loop quiz's questions.
		foreach ( $questions_ids as $question_id ) {

			// Get answers from question.
			$question_pro_id = (int) get_post_meta( $question_id, 'question_pro_id', true );
			$question_mapper = new \WpProQuiz_Model_QuestionMapper();

			if ( ! empty( $question_pro_id ) ) {
				$question_model = $question_mapper->fetch( $question_pro_id );
			} else {
				$question_model = $question_mapper->fetch( null );
			}

			$question_data       = $question_model->get_object_as_array();
			$controller_question = new \WpProQuiz_Controller_Question();

			if ( $question_model && is_a( $question_model, 'WpProQuiz_Model_Question' ) ) {
				$answers_data = $controller_question->setAnswerObject( $question_model );
			} else {
				$answers_data = $controller_question->setAnswerObject();
			}

			// Store answers in our format used at FE.
			$processed_answers = [];

			foreach ( $answers_data as $answer_type => $answers ) {
				foreach ( $answers as $answer ) {
					$processed_answers[ $answer_type ][] = [
						'answer'             => $answer->getAnswer(),
						'html'               => $answer->isHtml(),
						'points'             => $answer->getPoints(),
						'correct'            => $answer->isCorrect(),
						'sortString'         => $answer->getSortString(),
						'sortStringHtml'     => $answer->isSortStringHtml(),
						'graded'             => $answer->isGraded(),
						'gradingProgression' => $answer->getGradingProgression(),
						'gradedType'         => $answer->getGradedType(),
						'type'               => 'answer',
					];
				}
			}

			// Output question's data and answers.
			$output_questions[] = [
				'ID'              => $question_id,
				'expanded'        => false,
				'post_title'      => $question_data['_title'],
				'post_content'    => $question_data['_question'],
				'edit_link'       => get_edit_post_link( $question_id, '' ),
				'type'            => get_post_type( $question_id ),
				'question_type'   => $question_data['_answerType'],
				'points'          => $question_data['_points'],
				'answers'         => $processed_answers,
				'correctMsg'      => $question_data['_correctMsg'],
				'incorrectMsg'    => $question_data['_incorrectMsg'],
				'correctSameText' => $question_data['_correctSameText'],
				'tipEnabled'      => $question_data['_tipEnabled'],
				'tipMsg'          => $question_data['_tipMsg'],
			];
		}

		// Output all the quiz's questions.
		$data['outline'] = [
			'questions' => $output_questions,
		];

		// Add labels and data to Quiz Builder at FE.
		$data['labels']['questions_types']             = $GLOBALS['learndash_question_types'];
		$data['questions_types_map']                   = [
			'single'             => 'classic_answer',
			'multiple'           => 'classic_answer',
			'sort_answer'        => 'sort_answer',
			'matrix_sort_answer' => 'matrix_sort_answer',
			'cloze_answer'       => 'cloze_answer',
			'free_answer'        => 'free_answer',
			'assessment_answer'  => 'assessment_answer',
			'essay'              => 'essay',
		];
		$data['labels']['points']                      = [
			'singular' => esc_html__( 'point', 'learndash' ),
			'plural'   => esc_html__( 'points', 'learndash' ),
		];
		$data['labels']['questions_types_description'] = [
			'free_answer'       => esc_html_x( 'correct answers (one per line) (answers will be converted to lower case)', 'Question type description for Free Answers', 'learndash' ),
			'sort_answer'       => esc_html_x( 'Please sort the answers in the right order with the "move" button. The answers will be displayed randomly.', 'Question type description for Sort Answers', 'learndash' ),
			'cloze_answer'      => [
				wp_kses_post( __( 'Use <strong class="description-red">{ }</strong> to mark a gap and correct answer:<br /> <strong>I <span class="description-red">{</span>play<span class="description-red">}</span> soccer.</strong>', 'learndash' ) ),
				wp_kses_post( __( 'Use <strong class="description-red">[ ]</strong> to mark multiple correct answers:<br /> <strong>I {<span class="description-red">[</span>love<span class="description-red">][</span>hate<span class="description-red">]</span>} soccer.</strong>', 'learndash' ) ),
			],
			'essay'             => [
				esc_html__( 'How should the user submit their answer?', 'learndash' ),
				sprintf(
					// translators: placeholders: course
					esc_html_x( 'This is a question that can be graded and potentially prevent a user from progressing to the next step of the %s.', 'placeholders: course', 'learndash' ),
					\learndash_get_custom_label_lower( 'course' )
				),
				esc_html__( 'The user can only progress if the essay is marked as "Graded" and if the user has enough points to move on.', 'learndash' ),
				sprintf(
					// translators: placeholders: quiz
					esc_html_x( 'How should the answer to this question be marked and graded upon %s submission?', 'placeholders: quiz', 'learndash' ),
					\learndash_get_custom_label_lower( 'quiz' )
				),
			],
			'assessment_answer' => [
				wp_kses_post( __( 'Use <strong class="description-red">{ }</strong> to mark an assessment:<br /> <strong>Less true <span class="description-red">{</span> [1] [2] [3] [4] [5] <span class="description-red">}</span> More true</strong>', 'learndash' ) ),
				wp_kses_post( __( 'Use <strong class="description-red">[ ]</strong> to mark selectable items:<br /> <strong>Less true { <span class="description-red">[</span>A<span class="description-red">]</span> <span class="description-red">[</span>B<span class="description-red">]</span> <span class="description-red">[</span>C<span class="description-red">]</span> } More true</strong>', 'learndash' ) ),
			],
		];
	}

	return $data;
}
add_filter( 'learndash_header_data', 'LearnDash\Admin\QuizBuilderHelpers\get_quiz_data', 100 );