<?php
/**
 * Widgets class.
 *
 * @since 1.7.0
 *
 * @package Envira_Gallery
 * @author Envira Gallery Team
 */

namespace Envira\Widgets;

// Exit if accessed directly.
if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

/**
 * Widget Class
 */
class Widget extends \WP_Widget {

	/**
	 * Primary class constructor.
	 *
	 * @since 1.7.0
	 */
	public function __construct() {

		// Widget Name.
		$widget_name = __( 'Envira Gallery', 'envira-gallery' );
		$widget_name = apply_filters( 'envira_gallery_widget_name', $widget_name );

		// .
		$widget_ops = [
			'classname'   => 'envira-gallery',
			'description' => __( 'Place an Envira gallery into a widgetized area.', 'envira-gallery' ),
		];
		$widget_ops = apply_filters( 'envira_gallery_widget_ops', $widget_ops );

		// Control Options.
		$control_ops = [
			'id_base' => 'envira-gallery',
			'height'  => 350,
			'width'   => 225,
		];
		$control_ops = apply_filters( 'envira_gallery_widget_control_ops', $control_ops );

		// Init.
		parent::__construct( 'envira-gallery', $widget_name, $widget_ops, $control_ops );

		add_action( 'wp_ajax_envira_widget_get_galleries', [ $this, 'widget_get_galleries' ] );
	}

	/**
	 * Get galleries for widget.
	 *
	 * @since 1.0.0
	 */
	public function widget_get_galleries() {

		$galleries     = envira_get_galleries( false );
		$gallery_array = [];

		if ( is_array( $galleries ) ) {
			foreach ( $galleries as $gallery ) {

				if ( ! isset( $gallery['id'] ) || ! $gallery['id'] ) {
					continue;
				}

				// Instead of pulling the title from config, attempt to pull it from the gallery post first.
				$gallery_post = get_post( $gallery['id'] );

				if ( $gallery_post && ! empty( $gallery_post->post_title ) ) {
					$title = $gallery_post->post_title;
				} elseif ( ! empty( $gallery['config']['title'] ) ) {
					$title = wp_specialchars_decode( $gallery['config']['title'], ENT_QUOTES );
				} elseif ( ! empty( $gallery['config']['slug'] ) ) {
					$title = $gallery['config']['slug'];
				} else {
					/* translators: %s: Gallery ID */
					$title = sprintf( __( 'Gallery ID #%s', 'envira-gallery' ), $gallery['id'] );
				}

				$gallery_array[] = [
					'gallery_title' => $title,
					'gallery_id'    => '' . $gallery['id'] . '',
				];

			}
		}

		$string = [ 'galleries' => $gallery_array ];

		echo wp_json_encode( $string );
		exit;
	}

	/**
	 * Outputs the widget within the widgetized area.
	 *
	 * @since 1.7.0
	 *
	 * @param array $args     The default widget arguments.
	 * @param array $instance The input settings for the current widget instance.
	 */
	public function widget( $args, $instance ) {

		// Extract arguments into variables.
		extract( $args );

		$gallery_id       = false;
		$title            = false;
		$number_of_images = false;
		$gallery_args     = false;

		if ( isset( $instance['title'] ) ) {
			$title = apply_filters( 'widget_title', $instance['title'] );
		}
		if ( isset( $instance['envira_gallery_id'] ) ) {
			$gallery_id = $instance['envira_gallery_id'];
		}

		if ( ! $gallery_id ) {
			return;
		}

		if ( ! empty( $instance['number_of_images'] ) ) {
			$number_of_images = $instance['number_of_images'];
		}

		do_action( 'envira_gallery_widget_before_output', $args, $instance );

		echo $before_widget; // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped

		do_action( 'envira_gallery_widget_before_title', $args, $instance );

		// If a title exists, output it.
		if ( $title ) {
			echo $before_title . $title . $after_title;  // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
		}

		do_action( 'envira_gallery_widget_before_gallery', $args, $instance );

		if ( $number_of_images ) {
			if ( $number_of_images > 50 ) {
				$number_of_images = 50; // for performance reasons keep the max limit at 50, even if they manually enter a number in the widget input field.
			}
			$gallery_args = [ 'limit' => $number_of_images ];
		}

		// If a gallery has been selected, output it.
		if ( $gallery_id ) {
			envira_gallery( $gallery_id, 'id', $gallery_args );
		}

		do_action( 'envira_gallery_widget_after_gallery', $args, $instance );

		echo $after_widget;  // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped

		do_action( 'envira_gallery_widget_after_output', $args, $instance );
	}

	/**
	 * Sanitizes and updates the widget.
	 *
	 * @since 1.7.0
	 *
	 * @param array $new_instance The new input settings for the current widget instance.
	 * @param array $old_instance The old input settings for the current widget instance.
	 */
	public function update( $new_instance, $old_instance ) {

		// Set $instance to the old instance in case no new settings have been updated for a particular field.
		$instance = $old_instance;

		// Sanitize user inputs.
		$instance['title']             = trim( $new_instance['title'] );
		$instance['envira_gallery_id'] = absint( $new_instance['envira_gallery_id'] );
		$instance['number_of_images']  = absint( $new_instance['number_of_images'] ) === 0 ? '' : absint( $new_instance['number_of_images'] );

		return apply_filters( 'envira_gallery_widget_update_instance', $instance, $new_instance );
	}

	/**
	 * Outputs the widget form where the user can specify settings.
	 *
	 * @since 1.7.0
	 *
	 * @param array $instance The input settings for the current widget instance.
	 */
	public function form( $instance ) {

		// Get all available galleries and widget properties.
		$galleries = _envira_get_galleries( false );

		$title            = isset( $instance['title'] ) ? $instance['title'] : '';
		$gallery_id       = isset( $instance['envira_gallery_id'] ) ? $instance['envira_gallery_id'] : false;
		$number_of_images = ! empty( $instance['number_of_images'] ) ? intval( $instance['number_of_images'] ) : '';

		do_action( 'envira_gallery_widget_before_form', $instance );
		?>
		<p>
			<label for="<?php echo esc_attr( $this->get_field_id( 'title' ) ); ?>"><?php esc_html_e( 'Title', 'envira-gallery' ); ?></label>
			<input id="<?php echo esc_attr( $this->get_field_id( 'title' ) ); ?>" name="<?php echo esc_attr( $this->get_field_name( 'title' ) ); ?>" type="text" value="<?php echo esc_attr( $title ); ?>" style="width: 100%;" />
		</p>
		<?php do_action( 'envira_gallery_widget_middle_form', $instance ); ?>
		<p>
			<label for="<?php echo esc_attr( $this->get_field_id( 'envira_gallery_id' ) ); ?>"><?php esc_html_e( 'Gallery', 'envira-gallery' ); ?></label>

			<select class="form-control" id="<?php echo esc_attr( $this->get_field_id( 'envira_gallery_id' ) ); ?>" name="<?php echo esc_attr( $this->get_field_name( 'envira_gallery_id' ) ); ?>" style="width: 100%;">
			<!--<select class="form-control" name="choices-single-remote-fetch" id="choices-single-remote-fetch">-->
				<?php

				if ( is_array( $galleries ) ) {
					foreach ( $galleries as $gallery ) {
						if ( isset( $gallery['id'] ) ) {
							$title = get_the_title( $gallery['id'] );
							if ( $gallery_id && $gallery['id'] === $gallery_id ) {
								echo '<option selected="selected" value="' . absint( $gallery['id'] ) . '">' . esc_html( $title ) . '</option>';
							} else {
								echo '<option value="' . absint( $gallery['id'] ) . '">' . esc_html( $title ) . '</option>';
							}
						}
					}
				}

				?>
			</select>

		</p>
		<p>
			<label for="<?php echo esc_attr( $this->get_field_id( 'number_of_images' ) ); ?>">
				<?php esc_html_e( 'Number Of Images To Display?', 'envira-gallery' ); ?>
			</label>
			<input class="envira_widget_number_of_images" value="<?php echo esc_attr( $number_of_images ); ?>" type="text" maxlength="3" name="<?php echo esc_attr( $this->get_field_name( 'number_of_images' ) ); ?>" id="<?php echo esc_attr( $this->get_field_name( 'number_of_images' ) ); ?>" />
			<br/><small>Leave blank to display all images in gallery.</small>
		</p>
		<?php
		do_action( 'envira_gallery_widget_after_form', $instance );
	}
}