<?php
/**
 * Maybe cleanup content in order to remove empty p and br tags for our shortcodes
 */
function affcoups_maybe_cleanup_shortcode_output( $content ) {

    // array of custom shortcodes requiring the fix
    $block = join("|",array(
        'affcoups', 'affcoups_coupons'
    ) );

    // opening tag
    $rep = preg_replace("/(<p>)?\[($block)(\s[^\]]+)?\](<\/p>|<br \/>)?/","[$2$3]",$content);

    // closing tag
    $rep = preg_replace("/(<p>)?\[\/($block)](<\/p>|<br \/>)?/","[/$2]",$rep);

    return $rep;
}
add_filter( 'the_content', 'affcoups_maybe_cleanup_shortcode_output' );

/**
 * Basic shortcode
 *
 * @param $atts
 * @param $content
 * @return string*
 */
function affcoups_add_shortcode( $atts, $content ) {
    extract( shortcode_atts(array(
        'id' => null,
        'category' => null,
        'type' => null,
        'vendor' => null,
        'max' => null,
        'grid' => null,
        'hide_expired' => null,
        'template' => null,
        'order' => null,
        'orderby' => null
    ), $atts ) );

    global $affcoups_shortcode_atts;

    $affcoups_shortcode_atts = $atts;

    // Prepare options
    $options = affcoups_get_options();

    // Defaults
    $args = array(
        'posts_per_page' => -1,
        'orderby' => 'name',
        'order' => 'ASC'
    );

    //-- Max
    $args['posts_per_page'] = ( ! empty ( $max ) && is_numeric( $max ) ) ? intval( $max ) : '-1';

    //-- Order
    if ( ! empty ( $order ) ) {
        $args['affcoups_order'] = esc_html( $order );
    } else {
        $args['affcoups_order'] = ( ! empty( $options['order'] ) ) ? esc_html( $options['order'] ) : 'desc';
    }

    if ( ! empty ( $orderby ) ) {
        $args['affcoups_orderby'] = esc_attr($orderby);
    } else {
        $args['affcoups_orderby'] = ( ! empty( $options['orderby'] ) ) ? esc_html( $options['orderby'] ) : 'date';
    }

    //-- ID
    if ( ! empty( $id ) ) {
        $args['affcoups_coupon_id'] = esc_html( $id );
    }

    //-- Category
    if ( ! empty ( $category ) ) {
        $args['affcoups_coupon_category'] = esc_html( $category );
    }

    //-- Type
    if ( ! empty ( $type ) ) {
        $args['affcoups_coupon_type'] = esc_html( $type );
    }

    //-- Vendor
    if ( ! empty ( $vendor ) ) {
        $args['affcoups_coupon_vendor'] = esc_html( $vendor );
    }

    //-- Expiration
    if ( ! empty( $hide_expired ) ) {
        $args['affcoups_coupon_hide_expired'] = ( 'true' == $hide_expired ) ? true : false;
    } else {
        $args['affcoups_coupon_hide_expired'] = ( isset ( $options['hide_expired_coupons'] ) && $options['hide_expired_coupons'] == '1' ) ? true : false;
    }

    //affcoups_debug( $args );

    //-- Get coupons
    $coupons = affcoups_get_coupons( $args );

    //affcoups_debug( $coupons );

    ob_start();

    if ( $coupons->have_posts() ) {

        //echo 'Coupons found: ' . $coupons->post_count . '<br>';

        if ( affcoups_is_amp() ) {
            $template = 'amp';
        } else {

            // Defaults
            $template_default = ( ! empty( $options['template'] ) ) ? esc_html( $options['template'] ) : 'standard';
            $grid_size_default = ( ! empty( $options['grid_size'] ) && is_numeric( $options['grid_size'] ) ) ? esc_html( $options['grid_size'] ) : 2;

            // Collect template settings
            $template = ( ! empty( $template ) ) ? esc_html( $template ) : $template_default;
            $grid_size = $grid_size_default;

            // Grid Layout?
            if ( ! empty( $grid ) && is_numeric( $grid ) ) {
                $template = 'grid';
                $grid_size = $grid;
            }
        }

        if ( 'widget' === $template ) // TODO: Remove when we have a real widget template
            $template = 'standard';

        // Store template variables
        global $affcoups_template_args;

        $affcoups_template_args['template'] = $template;
        $affcoups_template_args['grid_size'] = ( ! empty( $grid_size ) ) ? $grid_size : 0;

        //echo 'Grid: ' . $grid . '<br>';
        //echo 'Template: ' . $template . '<br>';

        // Get template file
        $file = affcoups_get_template_file( $template, 'coupons' );

        // Load template
        if ( file_exists( $file ) ) {
            include( $file );
        } else {
            _e('Template not found.', 'affiliate-coupons');
        }

        wp_reset_postdata();

    } else {
        _e('No coupons found.', 'affiliate-coupons');
    }

    $str = ob_get_clean();

    // Remove unwanted line breaks from output
    $str = preg_replace('/^\s+|\n|\r|\s+$/m', '', $str );

    // Return output
    return $str;
}
add_shortcode('affcoups', 'affcoups_add_shortcode');

/**
 * Fallback for old shortcode
 */
add_shortcode('affcoups_coupons', 'affcoups_add_shortcode');

/*
 * Debug
 */
add_shortcode('affcoups_debug', function( $atts ) {

    /*
    $args = array(
        'affcoups_coupon_id' => array( 312, 314 )
    );

    $posts = affcoups_get_coupons( $args );

    affcoups_debug( $posts );
    */

    //affcoups_the_coupon_thumbnail( 310 );
    //$image = rwmb_meta( AFFCOUPS_PREFIX . 'vendor_image', 'type=image&size=affcoups-thumb&limit=1', 278 );
    //affcoups_debug($image);

    $expiration = get_post_meta( 556, AFFCOUPS_PREFIX . 'coupon_valid_until', true );

    var_dump( $expiration );

});