<?php
/**
 * Coupon functions
 *
 * @package     AffiliateCoupons\CouponFunctions
 * @since       1.0.0
 */

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

/**
 * Get coupons
 *
 * @param array $args
 *
 * @return WP_Query
 */
function affcoups_get_coupons( $args = array(), $query = true ) {

	$defaults = array(
		'post_type'      => 'affcoups_coupon',
		'post_status'    => 'publish',
		'posts_per_page' => - 1,
		//'nopaging' => true,
		'orderby'        => 'name',
		'order'          => 'ASC',
	);

	// Parse args
	$args = wp_parse_args( $args, $defaults );

	// Prepare additional queries
	$meta_queries = array(
		'relation' => 'AND'
	);

	$tax_queries = array(
		'relation' => 'AND'
	);

	//-- Order
	if ( ! empty( $args['affcoups_order'] ) ) {

		$order_options = array( 'ASC', 'DESC' );

		$order = strtoupper( $args['affcoups_order'] );

		if ( in_array( $order, $order_options ) ) {
			$args['order'] = $order;
		}
	}

	if ( ! empty( $args['affcoups_orderby'] ) ) {

		$orderby = strtolower( $args['affcoups_orderby'] );

		if ( 'name' === $orderby ) {
			$args['orderby'] = 'name';

		} elseif ( 'date' === $orderby ) {
			$args['orderby'] = 'date';

		} elseif ( 'random' === $orderby ) {
			$args['orderby'] = 'rand';

		} elseif ( 'title' === $orderby ) {
			$args['orderby']  = 'meta_value';
			$args['meta_key'] = AFFCOUPS_PREFIX . 'coupon_title';

		} elseif ( 'description' === $orderby ) {
			$args['orderby']  = 'meta_value';
			$args['meta_key'] = AFFCOUPS_PREFIX . 'coupon_description';

		} elseif ( 'discount' === $orderby ) {
			$args['orderby']  = 'meta_value_num';
			$args['meta_key'] = AFFCOUPS_PREFIX . 'coupon_discount';

		} elseif ( 'valid_from' === $orderby ) {
			$args['orderby']  = 'meta_value_num';
			$args['meta_key'] = AFFCOUPS_PREFIX . 'coupon_valid_from';

		} elseif ( 'valid_until' === $orderby ) {
			$args['orderby']  = 'meta_value_num';
			$args['meta_key'] = AFFCOUPS_PREFIX . 'coupon_valid_until';
		}

	}

	//-- ID
	if ( ! empty( $args['affcoups_coupon_id'] ) ) {

		$coupon_ids = explode( ',', esc_html( $args['affcoups_coupon_id'] ) );

		if ( sizeof( $coupon_ids ) > 0 ) {
			$args['post__in'] = $coupon_ids;
		}
	}

	//-- Category
	if ( ! empty( $args['affcoups_coupon_category'] ) ) {

		$coupon_categories = explode( ',', esc_html( $args['affcoups_coupon_category'] ) );

		$coupon_category_tax_field = ( isset( $coupon_categories[0] ) && is_numeric( $coupon_categories[0] ) ) ? 'term_id' : 'slug';

		$tax_queries[] = array(
			'taxonomy' => 'affcoups_coupon_category',
			'field'    => $coupon_category_tax_field,
			'terms'    => $coupon_categories,
			'operator' => 'IN'
		);
	}

	//-- Type
	if ( ! empty( $args['affcoups_coupon_type'] ) ) {

		$coupon_types = explode( ',', esc_html( $args['affcoups_coupon_type'] ) );

		$coupon_type_tax_field = ( isset( $coupon_types[0] ) && is_numeric( $coupon_types[0] ) ) ? 'term_id' : 'slug';

		$tax_queries[] = array(
			'taxonomy' => 'affcoups_coupon_type',
			'field'    => $coupon_type_tax_field,
			'terms'    => $coupon_types,
			'operator' => 'IN'
		);
	}

	//-- Vendor
	if ( ! empty( $args['affcoups_coupon_vendor'] ) ) {

		$coupon_vendors = explode( ',', esc_html( $args['affcoups_coupon_vendor'] ) );

		$meta_queries[] = array(
			'key'     => AFFCOUPS_PREFIX . 'coupon_vendor',
			'value'   => $coupon_vendors,
			'compare' => 'IN',
		);
	}

	//-- Expiration
	if ( isset( $args['affcoups_coupon_hide_expired'] ) && true === $args['affcoups_coupon_hide_expired'] ) {

		$meta_queries[] = array(
			'relation' => 'OR',
			// Until date not set yet
			array(
				'key'     => AFFCOUPS_PREFIX . 'coupon_valid_until',
				'value'   => '',
				'compare' => 'NOT EXISTS',
				'type'    => 'NUMERIC'
			),
			// Already expired
			array(
				'key'     => AFFCOUPS_PREFIX . 'coupon_valid_until',
				'value'   => time(),
				'compare' => '>=',
				'type'    => 'NUMERIC'
			)
		);
	}

	// Set meta queries
	if ( sizeof( $meta_queries ) > 1 ) {
		$args['meta_query'] = $meta_queries;
	}

	// Set tax queries
	if ( sizeof( $tax_queries ) > 1 ) {
		$args['tax_query'] = $tax_queries;
	}

	//affcoups_debug( $args, 'affcoups_get_coupons $args' );

	// Fetch posts
	$posts = ( $query ) ? new WP_Query( $args ) : get_posts( $args );

	return $posts;
}

/**
 * Get coupon options
 *
 * @param array $args
 *
 * @return array
 */
function affcoups_get_coupon_options( $args = array() ) {

	$defaults = array(
		'orderby' => 'date',
		'order'   => 'DESC'
	);

	// Parse args
	$args = wp_parse_args( $args, $defaults );

	$coupons = affcoups_get_coupons( $args, false );

	$options = array(
		0 => __( 'Please select...', 'affiliate-coupons' )
	);

	if ( is_array( $coupons ) && sizeof( $coupons ) > 0 ) {

		foreach ( $coupons as $coupon ) {
			$options[ $coupon->ID ] = $coupon->post_title;
		}
	}

	return $options;
}

/**
 * Get coupon vendor id
 *
 * @param null $coupon_id
 *
 * @return bool|mixed
 */
function affcoups_get_coupon_vendor_id( $coupon_id = null ) {

	if ( empty ( $coupon_id ) ) {
		$postid = get_the_ID();
	}

	$vendor_id = get_post_meta( $coupon_id, AFFCOUPS_PREFIX . 'coupon_vendor', true );

	return ( ! empty ( $vendor_id ) ) ? $vendor_id : false;
}

/**
 * Get coupon thumbnail image
 *
 * @param null $coupon_id
 * @param null $size
 *
 * @return bool|mixed
 */
function affcoups_get_coupon_image( $coupon_id = null, $size = null ) {

	if ( empty ( $coupon_id ) ) {
		$coupon_id = get_the_ID();
	}

	// Get thumbnail from coupon
	$image_size = ( 'small' === $size ) ? 'affcoups-thumb-small' : 'affcoups-thumb';

	if ( has_post_thumbnail( $coupon_id ) ) {

		$coupon_thumbnail_id = get_post_thumbnail_id( $coupon_id );
		$coupon_image_alt    = get_post_meta( $coupon_thumbnail_id, '_wp_attachment_image_alt', true );
		$coupon_image_url    = get_the_post_thumbnail_url( $coupon_id, $image_size );

		$coupon_feature_image = array(
			'url' => $coupon_image_url,
			'alt' => $coupon_image_alt
		);

		return $coupon_feature_image;

	} else {

		$coupon_images = rwmb_meta( AFFCOUPS_PREFIX . 'coupon_image', 'type=image&size=' . $image_size, $coupon_id );

		if ( ! empty ( $coupon_images ) && is_array( $coupon_images ) ) {

			return array_shift( $coupon_images );

			// Get thumbnail from vendor
		} else {
			$vendor_id = affcoups_get_coupon_vendor_id( $coupon_id );

			if ( ! empty ( $vendor_id ) ) {
				$vendor_images = affcoups_get_vendor_thumbnail( $vendor_id, $size );

				if ( ! empty ( $vendor_images ) && is_array( $vendor_images ) ) {
					return $vendor_images;
				}
			}
		}


	}

	// No thumbnail found
	return false;
}

/**
 * Display the coupon thumbnail
 *
 * @param null $coupon_id
 */
function affcoups_the_coupon_thumbnail( $coupon_id = null ) {

	if ( empty ( $coupon_id ) ) {
		$coupon_id = get_the_ID();
	}

	// Prepare image
	$image     = affcoups_get_coupon_image( $coupon_id );
	$image_url = ( ! empty ( $image['url'] ) ) ? $image['url'] : AFFCOUPS_URL . '/public/img/placeholder-thumb.png';
	$image_alt = ( ! empty ( $image['alt'] ) ) ? $image['alt'] : affcoups_get_coupon_title( $coupon_id );

	// Build image
	$image = '<img class="affcoups-coupon__image" src="' . $image_url . '" alt="' . $image_alt . '" />';

	// Build thumbnail
	$coupon_url = affcoups_get_coupon_url();

	if ( ! empty( $coupon_url ) ) {

		$coupon_title = affcoups_get_coupon_title( $coupon_id );
		$coupon_title = affcoups_cleanup_html_attribute( $coupon_title );

		$thumbnail = '<a class="affcoups-coupon__thumbnail" href="' . $coupon_url . '" title="' . $coupon_title . '" target="_blank" rel="nofollow">';
		$thumbnail .= $image;
		$thumbnail .= '</a>';
	} else {
		$thumbnail = '<span class="affcoups-coupon__thumbnail">';
		$thumbnail .= $image;
		$thumbnail .= '</a>';
	}

	// Output
	echo wp_kses_post( $thumbnail );
}

/**
 * Get coupon discount
 *
 * @param null $coupon_id
 *
 * @return bool|mixed
 */
function affcoups_get_coupon_discount( $coupon_id = null ) {

	if ( empty ( $coupon_id ) ) {
		$coupon_id = get_the_ID();
	}

	$discount = get_post_meta( $coupon_id, AFFCOUPS_PREFIX . 'coupon_discount', true );

	return ( ! empty ( $discount ) ) ? $discount : false;
}

/**
 * Get coupon title
 *
 * @param null $coupon_id
 *
 * @return mixed|string
 */
function affcoups_get_coupon_title( $coupon_id = null ) {

	if ( empty ( $coupon_id ) ) {
		$coupon_id = get_the_ID();
	}

	// Coupon
	$title = get_post_meta( $coupon_id, AFFCOUPS_PREFIX . 'coupon_title', true );

	if ( ! empty ( $title ) ) {
		return $title;
	}

	// Vendor
	$vendor_id = affcoups_get_coupon_vendor_id( $coupon_id );

	if ( ! empty ( $vendor_id ) ) {
		$title = get_the_title( $vendor_id );
	}

	// Fallback
	if ( empty ( $title ) ) {
		$title = get_the_title( $coupon_id );
	}

	return $title;
}

/**
 * Get coupon description
 *
 * @param null $coupon_id
 *
 * @return string
 */
function affcoups_get_coupon_description( $coupon_id = null ) {

	if ( empty ( $coupon_id ) ) {
		$coupon_id = get_the_ID();
	}

	// Coupon
	$description = get_post_meta( $coupon_id, AFFCOUPS_PREFIX . 'coupon_description', true );

	// Vendor
	if ( empty ( $description ) ) {
		$vendor_id = affcoups_get_coupon_vendor_id( $coupon_id );

		if ( ! empty ( $vendor_id ) ) {
			$description = get_post_meta( $vendor_id, AFFCOUPS_PREFIX . 'vendor_description', true );
		}
	}

	// Fallback
	if ( empty ( $description ) ) {
		$description = affcoups_get_post_content( $coupon_id );
	}

	return $description;
}

/**
 * Get coupon excerpt
 *
 * @param null $coupon_id
 *
 * @return mixed
 */
function affcoups_get_coupon_excerpt( $coupon_id = null ) {

	if ( empty ( $coupon_id ) ) {
		$coupon_id = get_the_ID();
	}

	$description = affcoups_get_coupon_description( $coupon_id );

	$description = trim( $description );

	$excerpt_length = affcoups_get_option( 'excerpt_length', 90 );

	$excerpt = affcoups_truncate_string( $description, $excerpt_length );

	return $excerpt;
}

/**
 * Output the coupon excerpt
 *
 * @param $coupon_id
 */
function affcoups_the_coupon_excerpt( $coupon_id = null ) {

	if ( empty ( $coupon_id ) ) {
		$coupon_id = get_the_ID();
	}

	$description = affcoups_get_coupon_description( $coupon_id );
	$excerpt     = affcoups_get_coupon_excerpt( $coupon_id );

	echo wp_kses_post( $excerpt );

	if ( $excerpt != $description ) {
		echo wp_kses_post( '<a href="#" class="affcoups-toggle-desc" data-affcoups-toggle-desc="true">' . __( 'More', 'affiliate-coupons' ) . '</a>' );
	}
}

/**
 * Get coupon code
 *
 * @param null $coupon_id
 *
 * @return bool|mixed
 */
function affcoups_get_coupon_code( $coupon_id = null ) {

	if ( empty ( $coupon_id ) ) {
		$coupon_id = get_the_ID();
	}

	$code = get_post_meta( $coupon_id, AFFCOUPS_PREFIX . 'coupon_code', true );

	return ( ! empty ( $code ) ) ? $code : false;
}

/**
 * Display the coupon code
 *
 * @param null $coupon_id
 */
function affcoups_the_coupon_code( $coupon_id = null ) {

	if ( empty ( $coupon_id ) ) {
		$coupon_id = get_the_ID();
	}

	$copy_img = 'data:image/png;base64,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';

	$copy_img = apply_filters( 'affcoups_coupon_copy_img_src', $copy_img );

	$code = affcoups_get_coupon_code( $coupon_id );
	?>

    <div class="affcoups-clipboard affcoups-coupon-code" data-clipboard-text="<?php echo esc_attr( $code ); ?>" data-affcoups-clipboard-confirmation-text="<?php esc_attr_e( 'Copied!', 'affiliate-coupons' ); ?>">
        <img class="affcoups-coupon-code__copy" src="<?php echo esc_attr( $copy_img ); ?>" alt="<?php esc_attr_e( 'Copy', 'affiliate-coupons' ); ?>"/>
		<?php echo esc_attr( $code ); ?>
    </div>
	<?php
}

/**
 * Get coupon url
 *
 * @param null $coupon_id
 *
 * @return bool|mixed
 */
function affcoups_get_coupon_url( $coupon_id = null ) {

	if ( empty( $coupon_id ) ) {
		$coupon_id = get_the_ID();
	}

	$url = get_post_meta( $coupon_id, AFFCOUPS_PREFIX . 'coupon_url', true );

	if ( empty( $url ) ) {
		$vendor_id = affcoups_get_coupon_vendor_id( $coupon_id );

		if ( ! empty( $vendor_id ) ) {
			$url = affcoups_get_vendor_url( $vendor_id );
		}
	}

	return $url;
}

/**
 * Get coupon types
 *
 * @param null $coupon_id
 *
 * @return array|bool|WP_Error
 */
function affcoups_get_coupon_types( $coupon_id = null ) {

	if ( empty( $coupon_id ) ) {
		$coupon_id = get_the_ID();
	}

	$term_list = wp_get_post_terms( $coupon_id, 'affcoups_coupon_type', array( "fields" => "all" ) );

	if ( sizeof( $term_list ) > 0 ) {
		return $term_list;
	}

	return false;
}

/**
 * Display coupon types
 *
 * @param null $coupon_id
 */
function affcoups_the_coupon_types( $coupon_id = null ) {

	if ( empty( $coupon_id ) ) {
		$coupon_id = get_the_ID();
	}

	$types = '';

	$term_list = affcoups_get_coupon_types( $coupon_id );

	if ( is_array( $term_list ) && sizeof( $term_list ) > 0 ) {

		foreach ( $term_list as $term_single ) {
			echo '<span class="affcoups-type affcoups-type--' . esc_html( $term_single->slug ) . '">';
			echo esc_attr( $term_single->name );
			echo '</span>';
		}
	}

	echo esc_attr( $types );
}

/**
 * Check if coupon has valid dates
 *
 * @param null $coupon_id
 *
 * @return bool
 */
function affcoups_coupon_has_valid_dates( $coupon_id = null ) {

	if ( empty ( $coupon_id ) ) {
		$coupon_id = get_the_ID();
	}

	$valid_from  = get_post_meta( $coupon_id, AFFCOUPS_PREFIX . 'coupon_valid_from', true );
	$valid_until = get_post_meta( $coupon_id, AFFCOUPS_PREFIX . 'coupon_valid_until', true );

	return ( ! empty ( $valid_from ) || ! empty ( $valid_until ) ) ? true : false;
}

/**
 * Display coupon valid dates
 *
 * @param null $coupon_id
 */
function affcoups_the_coupon_valid_dates( $coupon_id = null ) {

	if ( empty ( $coupon_id ) ) {
		$coupon_id = get_the_ID();
	}

	$date_format = get_option( 'date_format' );
	$date_format = apply_filters( 'affcoups_coupon_validation_date_format', $date_format );

	$dates = '';

	$valid_from  = get_post_meta( $coupon_id, AFFCOUPS_PREFIX . 'coupon_valid_from', true );
	$valid_until = get_post_meta( $coupon_id, AFFCOUPS_PREFIX . 'coupon_valid_until', true );

	if ( ! empty ( $valid_from ) && time() < $valid_from ) {
		$dates .= __( 'Valid from', 'affiliate-coupons' ) . ' ' . date_i18n( $date_format, $valid_from );
	}

	if ( ! empty ( $valid_until ) ) {

		$dates .= ( empty ( $dates ) ) ? __( 'Valid until', 'affiliate-coupons' ) : ' ' . __( 'until', 'affiliate-coupons' );
		$dates .= ' ' . date_i18n( $date_format, $valid_until );
	}

	echo esc_attr( $dates );
}

/**
 * Display coupon button
 *
 * @param null $coupon_id
 */
function affcoups_the_coupon_button( $coupon_id = null ) {

	if ( empty ( $coupon_id ) ) {
		$coupon_id = get_the_ID();
	}

	global $affcoups_shortcode_atts;

	$options = affcoups_get_options();

	// Button text
	if ( ! empty( $affcoups_shortcode_atts['button_text'] ) ) {
		$button_text = esc_html( $affcoups_shortcode_atts['button_text'] );
	} else {
		$button_text = ( ! empty( $options['button_text'] ) ) ? esc_html( $options['button_text'] ) : __( 'Go to the deal', 'affiliate-coupons' );
	}

	// Build button settings
	$button = array(
		'url'    => affcoups_get_coupon_url( $coupon_id ),
		'title'  => affcoups_cleanup_html_attribute( $button_text ),
		'text'   => $button_text,
		'target' => '_blank',
		'rel'    => 'nofollow'
	);

	$button = apply_filters( 'affcoups_button', $button, $coupon_id );

	$button_icon = ( ! empty( $options['button_icon'] ) ) ? esc_html( $options['button_icon'] ) : false;

	?>
    <a class="affcoups-coupon__button" href="<?php echo esc_attr( $button['url'] ); ?>" title="<?php echo esc_attr( $button['title'] ); ?>" rel="<?php echo esc_attr( $button['rel'] ); ?>" target="<?php echo esc_attr( $button['target'] ); ?>">
		<?php if ( ! empty( $button_icon ) ) { ?>
            <span class="affcoups-icon-<?php echo esc_attr( $button_icon ); ?> affcoups-coupon__button-icon"></span>
		<?php } ?>

		<?php echo esc_attr( $button['text'] ); ?></a>
	<?php
}

/**
 * Display coupon categories
 */
function affcoups_get_category_taxonomy() {

	$options = array(
		0 => __( 'Please select...', 'affiliate-coupons' )
	);

	$terms = get_terms( [
		'taxonomy' => 'affcoups_coupon_category'
	] );

	if ( sizeof( $options ) > 0 ) {

		foreach ( $terms as $term ) {
			$options[ $term->term_id ] = $term->name;
		}

	}

	return $options;
}

/**
 * Display coupon types
 */
function affcoups_get_types_taxonomy() {

	$options = array(
		0 => __( 'Please select...', 'affiliate-coupons' )
	);

	$types = get_terms( [
		'taxonomy' => 'affcoups_coupon_type'
	] );

	if ( sizeof( $options ) > 0 ) {

		foreach ( $types as $type ) {
			$options[ $type->term_id ] = $type->name;
		}

	}

	return $options;
}

/**
 * Get coupon options
 */
function affcoups_get_vendors_list() {

	$vendors = affcoups_get_vendors();

	$options = array(
		0 => __( 'Please select...', 'affiliate-coupons' )
	);

	if ( is_array( $vendors ) && sizeof( $options ) > 0 ) {

		foreach ( $vendors as $vendor ) {
			$options[ $vendor->ID ] = $vendor->post_title;
		}
	}

	return $options;
}

/**
 * Get coupons
 */
function affcoups_get_vendors() {

	$args = array(
		'post_type'      => 'affcoups_vendor',
		'post_status'    => 'publish',
		'posts_per_page' => - 1,
		//'nopaging' => true,
		'orderby'        => 'name',
		'order'          => 'ASC',
	);

	// Fetch posts
	$vendors = get_posts( $args );

	return $vendors;
}