<?php
namespace ADCmdr;

use ADCmdr\Vendor\WOAdminFramework\WOMeta;

/**
 * Exposes Ad Commander Abilities
 */
class AbilitiesMethods {
	/**
	 * An instance of this class.
	 *
	 * @var AbilitiesMethods|null
	 */
	private static $instance = null;

	/**
	 * The current instance of WOMeta.
	 *
	 * @var WOMeta
	 */
	private $wo_meta;

	/**
	 * Create an instance of self if necessary and return it.
	 *
	 * @return AbilitiesMethods
	 */
	public static function instance() {
		if ( self::$instance === null ) {
			self::$instance = new self();
		}

		return self::$instance;
	}

	public function __construct() {
		$this->wo_meta = new WOMeta( AdCommander::ns() );
	}

	/**
	 * Assumes input has been sanitized and user has been authorized to make this request.
	 */
	public function list_ads( $ad_ids = array(), $post_statuses = array(), $detailed = false, $include_groups = false ) {

		$allowed_post_statuses = Abilities::allowed_post_statuses();
		$post_statuses         = array_intersect( $post_statuses, $allowed_post_statuses );

		if ( empty( $post_statuses ) ) {
			$post_statuses = $allowed_post_statuses;
		}

		$singular = false;

		if ( ! is_array( $ad_ids ) ) {
			$singular = $ad_ids;
			$ad_ids   = array( $ad_ids );
		}

		$ads = Query::ads( 'post_title', 'asc', $post_statuses, array(), array(), $ad_ids );

		if ( ! $ads || empty( $ads ) ) {
			return array();
		}

		$parsed_ads = array();

		foreach ( $ads as $ad ) {
			$ad_item = array(
				'ad_id'     => $ad->ID,
				'ad_title'  => $ad->post_title,
				'ad_status' => $ad->post_status,
			);

			if ( $include_groups ) {
				$groups            = wp_get_post_terms( $ad->ID, AdCommander::tax_group(), array( 'fields' => 'all' ) );
				$ad_item['groups'] = array();

				if ( ! is_wp_error( $groups ) && ! empty( $groups ) ) {
					foreach ( $groups as $group ) {
						$ad_item['groups'][] = array(
							'group_id'   => $group->term_id,
							'group_name' => $group->name,
						);
					}
				}
			}

			if ( $detailed ) {
				$meta = $this->wo_meta->get_post_meta( $ad->ID, AdPostMeta::post_meta_keys() );

				if ( $meta ) {
					$ad_type            = $this->wo_meta->get_value( $meta, 'adtype', false );
					$ad_item['ad_type'] = AdPostMeta::ad_types()[ $ad_type ] ?? $ad_type;

					if ( $ad_type === 'bannerad' ) {

						$ad_item['banner_linked_url'] = $this->wo_meta->get_value( $meta, 'bannerurl', false );

						$attachment_id = get_post_thumbnail_id( $ad );

						if ( $attachment_id ) {
							$image  = wp_get_attachment_image_src( $attachment_id, 'full' );
							$width  = $this->wo_meta->get_value( $meta, 'display_width' );
							$height = $this->wo_meta->get_value( $meta, 'display_height' );

							if ( $image ) {
								$ad_item['banner_image_url'] = $image[0];

								if ( ! $width ) {
									$width = $image[1];
								}

								if ( ! $height ) {
									$height = $image[2];
								}
							}

							$ad_item['banner_image_width']  = absint( $width );
							$ad_item['banner_image_height'] = absint( $height );
						}
					} elseif ( $ad_type === 'adsense' ) {
						$ad_item['adsense_ad_mode'] = $this->wo_meta->get_value( $meta, 'adsense_ad_mode', false );
					}

					if ( ProBridge::instance()->is_pro_loaded() ) {
						$ad_item['expire_gmt']         = intval( $this->wo_meta->get_value( $meta, 'expire_gmt', false ) );
						$ad_item['expire_clicks']      = intval( $this->wo_meta->get_value( $meta, 'expire_clicks', false ) );
						$ad_item['expire_impressions'] = intval( $this->wo_meta->get_value( $meta, 'expire_impressions', false ) );
					}
				}
			}

			$parsed_ads[] = $ad_item;
		}

		if ( $singular !== false ) {
			return array_column( $parsed_ads, null, 'ad_id' )[ $singular ] ?? array();
		}

		return $parsed_ads;
	}
}