<?php
if ( ! function_exists( 'dine_err' ) ) :
/**
 * function to return errors nicely
 * @since 3.1
 */
function dine_err( $msg ) {
    
    return sprintf( '<div class="dine-error">%s</div>', $msg );
    
}
endif;

if ( ! function_exists( 'dine_format' ) ) :
/**
 * format things as python
 * @since 3.1
 */
function dine_format( $msg, $vars ) {
    
    $vars = (array)$vars;

    $msg = preg_replace_callback('#\{\}#', function($r){
        static $i = 0;
        return '{'.($i++).'}';
    }, $msg);

    return str_replace(
        array_map(function($k) {
            return '{'.$k.'}';
        }, array_keys($vars)),

        array_values($vars),

        $msg
    );
    
}
endif;

if ( ! function_exists( 'dine_word_substr' ) ) :
/**
 * Same as PHP substr but word-base
 *
 * @since 1.0
 */
function dine_word_substr( $str, $start = 0, $length = -1 ) {
    
    $chunks = explode( ' ', $str );
    $chunks = array_slice( $chunks, $start, $length );
    
    return join( ' ', $chunks );
}
endif;

if ( !function_exists('dine_allowed_html') ) :
/**
 * Allowed HTML tags for wp_kses function
 *
 * @since 1.0
 */
function dine_allowed_html(){
    return array(
        'a' => array(
            'href' => array(),
            'title' => array(),
            'target' => array(),
            'class' => array(),
            'onclick' => array(),
            'rel' => array(),
            'nofollow' => array(),
        ),
        'br' => array(),
        'em' => array(
            'class' => array(),
            'title' => array(),
        ),
        'strong' => array(
            'class' => array(),
            'title' => array(),
        ),
        'span' => array(
            'class' => array(),
            'title' => array(),
        ),
        'i' => array(
            'class' => array(),
            'title' => array(),
        ),
        'b' => array(
            'class' => array(),
            'title' => array(),
        ),
        'hr' => array(
            'class' => array(),
            'title' => array(),
        ),
        'ul' => array(
            'class' => array(),
            'title' => array(),
        ),
        'ol' => array(
            'class' => array(),
            'title' => array(),
        ),
        'li' => array(
            'class' => array(),
            'title' => array(),
        ),
        'img' => array(
            'src' => array(),
            'title' => array(),
            'class' => array(),
            'width' => array(),
            'height' => array(),
            'alt' => array(),
        ),
    );   
}
endif;

if ( ! function_exists( 'dine_get_instagram_photos' ) ) :
/**
 * retrieve instagram photos
 *
 * @since 1.0
 */
function dine_get_instagram_photos( $username, $number, $cache_time ) {
    
    global $wp_version;
    
    $proxies = array(
        'https://boomproxy.com/browse.php?u=',
        'https://us.hidester.com/proxy.php?u=',
        'https://proxy-us1.toolur.com/browse.php?u=',
        'https://proxy-fr1.toolur.com/browse.php?u=',
    );

    /**
     * Get Instagram Photos
     *
     * @Scott Evans
     */
    $username = trim( strtolower( $username ) );
    $number = absint( $number );
    $cache_time = absint( $cache_time );

    if ( ! $username ) return;

    if ( $number < 1 || $number > 12 ) $number = 6;
    
    if ( false === ( $instagram = get_transient( 'dine-instagram-' . sanitize_title_with_dashes( $username . '-' . $number ) ) ) ) {

        switch ( substr( $username, 0, 1 ) ) {
			case '#':
				$url              = 'https://instagram.com/explore/tags/' . str_replace( '#', '', $username );
				$transient_prefix = 'h';
				break;

			default:
				$url              = 'https://instagram.com/' . str_replace( '@', '', $username );
				$transient_prefix = 'u';
				break;
		}
        
        if ( $proxy = apply_filters( 'wpiw_proxy', false ) ) {
            $url = $proxies[ array_rand( $proxies ) ] . urlencode( $url );
        }

		if ( false === ( $instagram = get_transient( 'insta-a10-' . $transient_prefix . '-' . sanitize_title_with_dashes( $username ) ) ) ) {

			$remote = wp_remote_get( $url, array(
				'user-agent' => 'Instagram/' . $wp_version . '; ' . home_url()
			) );

			if ( is_wp_error( $remote ) ) {
				return new WP_Error( 'site_down', esc_html__( 'Unable to communicate with Instagram.', 'dine' ) );
			}

			if ( 200 !== wp_remote_retrieve_response_code( $remote ) ) {
				return new WP_Error( 'invalid_response', esc_html__( 'Instagram did not return a 200.', 'dine' ) );
			}

			$shards      = explode( 'window._sharedData = ', $remote['body'] );
			$insta_json  = explode( ';</script>', $shards[1] );
			$insta_array = json_decode( $insta_json[0], true );

			if ( ! $insta_array ) {
				return new WP_Error( 'bad_json', esc_html__( 'Instagram has returned invalid data.', 'dine' ) );
			}

			if ( isset( $insta_array['entry_data']['ProfilePage'][0]['graphql']['user']['edge_owner_to_timeline_media']['edges'] ) ) {
				$images = $insta_array['entry_data']['ProfilePage'][0]['graphql']['user']['edge_owner_to_timeline_media']['edges'];
			} elseif ( isset( $insta_array['entry_data']['TagPage'][0]['graphql']['hashtag']['edge_hashtag_to_media']['edges'] ) ) {
				$images = $insta_array['entry_data']['TagPage'][0]['graphql']['hashtag']['edge_hashtag_to_media']['edges'];
			} else {
				return new WP_Error( 'bad_json_2', esc_html__( 'Instagram has returned invalid data.', 'dine' ) );
			}

			if ( ! is_array( $images ) ) {
				return new WP_Error( 'bad_array', esc_html__( 'Instagram has returned invalid data.', 'dine' ) );
			}

			$instagram = array();

			foreach ( $images as $image ) {
				if ( true === $image['node']['is_video'] ) {
					$type = 'video';
				} else {
					$type = 'image';
				}

				$caption = __( 'Instagram Image', 'dine' );
				if ( ! empty( $image['node']['edge_media_to_caption']['edges'][0]['node']['text'] ) ) {
					$caption = wp_kses( $image['node']['edge_media_to_caption']['edges'][0]['node']['text'], array() );
				}

				$instagram[] = array(
					'description' => $caption,
					'link'        => trailingslashit( '//instagram.com/p/' . $image['node']['shortcode'] ),
					'time'        => $image['node']['taken_at_timestamp'],
					'comments'    => $image['node']['edge_media_to_comment']['count'],
					'likes'       => $image['node']['edge_liked_by']['count'],
					'thumbnail'   => preg_replace( '/^https?\:/i', '', $image['node']['thumbnail_resources'][0]['src'] ),
					'small'       => preg_replace( '/^https?\:/i', '', $image['node']['thumbnail_resources'][2]['src'] ),
					'large'       => preg_replace( '/^https?\:/i', '', $image['node']['thumbnail_resources'][4]['src'] ),
					'original'    => preg_replace( '/^https?\:/i', '', $image['node']['display_url'] ),
					'type'        => $type,
				);
			} // End foreach().

			// do not set an empty transient - should help catch private or empty accounts.
			if ( ! empty( $instagram ) ) {
				$instagram = base64_encode( serialize( $instagram ) );
				set_transient( 'insta-a10-' . $transient_prefix . '-' . sanitize_title_with_dashes( $username ), $instagram, apply_filters( 'null_instagram_cache_time', $cache_time ) );
			}
		}

		if ( ! empty( $instagram ) ) {

			$instagram = unserialize( base64_decode( $instagram ) );

		} else {

			return new WP_Error( 'no_images', esc_html__( 'Instagram did not return any images.', 'dine' ) );

		}
    }

    if ( ! empty( $instagram ) ) {

        return array_slice( $instagram, 0, $number );

    } else {

        return new WP_Error( 'no_images', esc_html__( 'Instagram did not return any images.', 'dine' ) );

    }

}
endif;

if ( ! function_exists( 'dine_get_video_thumbnail' ) ) :
/**
 * returns video url of youtube/vimeo video and store it by transient
 *
 * @since 1.0
 */
function dine_get_video_thumbnail( $video_url = '' ) {
    
    if ( ! $video_url ) return;
    
    if ( false === ( $video_thumbnail_url = get_transient( 'dine-video-thumbnail-' . sanitize_title_with_dashes( $video_url ) ) ) ) {
    
        // check the embed case
        if ( stripos($video_url,'<' . 'iframe') > -1) {
            preg_match('/src="([^"]+)"/', $video_url, $match);
            $video_url = $match[1];
            $video_url = preg_replace('/\?.*/', '', $video_url);
        }

        // Props to @rzen for lending his massive brain smarts to help with the regex
        $do_video_thumbnail = (
            preg_match( '/\/\/(www\.)?youtube\.com\/(watch|embed)\/?(\?v=)?([a-zA-Z0-9\-\_]+)/', $video_url, $youtube_matches ) ||
                    preg_match( '#https?://(.+\.)?vimeo\.com/.*#i', $video_url, $vimeo_matches )
        );

        if ( ! $do_video_thumbnail ) {
            return false;
        }

        $youtube_id = ! empty( $youtube_matches ) ? $youtube_matches[4] : '';
        $vimeo_id = ! empty( $vimeo_matches ) ? preg_replace( "/[^0-9]/", "", $vimeo_matches[0] ) : '';

        if ( $youtube_id ) {
            // Check to see if our max-res image exists
            $file_headers = get_headers( 'http://img.youtube.com/vi/' . $youtube_id . '/maxresdefault.jpg' );
            $video_thumbnail_url = $file_headers[0] !== 'HTTP/1.0 404 Not Found' ? 'http://img.youtube.com/vi/' . $youtube_id . '/maxresdefault.jpg' : 'http://img.youtube.com/vi/' . $youtube_id . '/hqdefault.jpg';

        } elseif ( $vimeo_id ) {

            $vimeo_data = wp_remote_get( 'http://www.vimeo.com/api/v2/video/' . intval( $vimeo_id ) . '.php' );
            if ( isset( $vimeo_data['response']['code'] ) && '200' == $vimeo_data['response']['code'] ){
                $response = unserialize( $vimeo_data['body'] );
                $video_thumbnail_url = isset( $response[0]['thumbnail_large'] ) ? $response[0]['thumbnail_large'] : false;
            }
            $video_thumbnail_url_1280 = str_replace( '_640', '_1280', $video_thumbnail_url );

            if ( $video_thumbnail_url_1280 ) {
                // Check to see if 1280px image exists
                $file_headers = get_headers( $video_thumbnail_url_1280 );
                if ( $file_headers[0] !== 'HTTP/1.0 404 Not Found' ) $video_thumbnail_url = $video_thumbnail_url_1280;
            }
        }
        
        // do not set an empty transient - should help catch private or empty accounts
        if ( ! empty( $video_thumbnail_url ) ) {
            set_transient( 'dine-video-thumbnail-'.sanitize_title_with_dashes( $video_url ), $video_thumbnail_url, WEEK_IN_SECONDS );
        }
        
    }
    
    return $video_thumbnail_url;
    
}
endif;

if ( ! function_exists( 'dine_checkbox_option' ) ) :
/**
 * Get multicheckbox options while values are separated by commas.
 *
 * @since 1.0
 */
function dine_checkbox_option( $option_id, $default = null ) {
    if ( null === $default ) {
        $return = trim( get_theme_mod( $option_id ) );
    } else {
        $return = trim( get_theme_mod( $option_id, $default ) );
    }
    $return = explode( ',' , $return );
    $return = array_map( 'trim', $return );
    return $return;
}
endif;

if ( ! function_exists( 'dine_border_style' ) ):
/**
 * Border Style
 *
 * @since 1.0
 */
function dine_border_style() {
    return array(
        'none' => esc_html__( 'None', 'dine' ),
        'solid' => esc_html__( 'Solid', 'dine' ),
        'dotted' => esc_html__( 'Dotted', 'dine' ),
        'dashed' => esc_html__( 'Dashed', 'dine' ),
        'double' => esc_html__( 'Double', 'dine' ),
    );
}
endif;

if ( ! function_exists( 'dine_background_size' ) ):
/**
 * Background Size
 *
 * @since 1.0
 */
function dine_background_size() {
    return array(
        'cover' => esc_html__( 'Cover', 'dine' ),
        'contain' => esc_html__( 'Contain', 'dine' ),
        '100% auto' => esc_html__( '100% Width', 'dine' ),
        'auto 100%' => esc_html__( '100% Height', 'dine' ),
        'auto' => esc_html__( 'Auto', 'dine' ),
    );
}
endif;

if ( ! function_exists( 'dine_background_position' ) ):
/**
 * Background Position
 *
 * @since 1.0
 */
function dine_background_position() {
    return array(
        'left top' => esc_html__( 'Left Top', 'dine' ),
        'center top' => esc_html__( 'Center Top', 'dine' ),
        'right top' => esc_html__( 'Right Top', 'dine' ),
        
        'left center' => esc_html__( 'Left Middle', 'dine' ),
        'center center' => esc_html__( 'Center Middle', 'dine' ),
        'right center' => esc_html__( 'Right Middle', 'dine' ),
        
        'left bottom' => esc_html__( 'Left Bottom', 'dine' ),
        'center bottom' => esc_html__( 'Center Bottom', 'dine' ),
        'right bottom' => esc_html__( 'Right Bottom', 'dine' ),
    );
}
endif;

if ( ! function_exists( 'dine_background_repeat' ) ):
/**
 * Background Repeat
 *
 * @since 1.0
 */
function dine_background_repeat() {
    return array(
        'no-repeat' => esc_html__( 'No Repeat', 'dine' ),
        'repeat' => esc_html__( 'Repeat', 'dine' ),
        'repeat-x' => esc_html__( 'Repeat X', 'dine' ),
        'repeat-y' => esc_html__( 'Repeat Y', 'dine' ),
    );
}
endif;

if ( ! function_exists( 'dine_background_attachment' ) ):
/**
 * Background Attachment
 *
 * @since 1.0
 */
function dine_background_attachment() {
    return array(
        'scroll' => esc_html__( 'Scroll', 'dine' ),
        'fixed' => esc_html__( 'Fixed', 'dine' ),
    );
}
endif;

if ( ! function_exists( 'dine_pageid' ) ) :
/**
 * Normally get post id returns current singular id but it doesn't apply for blog posts page
 *
 * This function covers that case
 *
 * @since 1.0
 */
function dine_pageid() {
    
    if ( is_singular() ) {
    
        return get_the_ID();
        
    } elseif ( is_home() && get_option( 'show_on_front' ) == 'page' ) {
        
        return get_option( 'page_for_posts' );
    
    }
    
    return apply_filters( 'dine_pageid', false );

}
endif;

/* text to screen number
 * since 3.3
------------------------------------------------------------------------------------ */
function dine_get_screen_from_text( $screen ) {
    
    if ( 'ipad1' == $screen ) return 1023;
    if ( 'ipad2' == $screen ) return 767;
    if ( 'iphone1' == $screen ) return 567;
    if ( 'iphone2' == $screen ) return 479;
    
    return 1919;
    
}

/* since 4.0
 * since 3.3
------------------------------------------------------------------------------------ */
function dine_get_query_screen_string_from_text( $screen ) {
    
    return "@media only screen and (max-width: " . dine_get_screen_from_text( $screen ) . "px)";
    
}