<?php
/**
 * AMPWP Theme functions
 *
 * @package    Amp_WP/Functions
 * @version    1.0.0
 * @author     Pixelative <mohsin@pixelative.co>
 * @copyright  Copyright (c) 2018, Pixelative
 */

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

if( !function_exists( 'amp_wp_locate_template' ) ) :
    /**
     * Retrieve the Name of the Highest Priority Amp Template File That Exists.
     *
     * @see   locate_template for more doc
     *
     * @param string|array $template_names Template file(s) to search for, in order.
     * @param bool         $load           If TRUE the Template File Will Be Loaded If It Is Found.
     * @param bool         $require_once   Whether to Require_once or Require. Default TRUE. Has No Effect If $load Is FALSE.
     *
     * @since 1.0.0
     *
     * @return string The template filename if one is located.
     */
    function amp_wp_locate_template( $template_names, $load = FALSE, $require_once = TRUE ) {
        $wp_theme_can_override = current_theme_supports( 'amp-wp-template' );

        /**
         * Scan WordPress theme directory at first, if override feature was enabled
         */
        if( $wp_theme_can_override ) {
            $scan_directories = array(
                STYLESHEETPATH . '/' . AMPWP_OVERRIDE_TPL_DIR . '/',
                TEMPLATEPATH . '/' . AMPWP_OVERRIDE_TPL_DIR . '/',
                amp_wp_get_template_directory()
            );
        } else {
            $scan_directories = array(
                amp_wp_get_template_directory(),
                STYLESHEETPATH . '/' . AMPWP_OVERRIDE_TPL_DIR . '/',
                TEMPLATEPATH . '/' . AMPWP_OVERRIDE_TPL_DIR . '/',
            );
        }

        $scan_directories = array_unique( array_filter( $scan_directories ) );

        foreach( $scan_directories as $theme_directory ) {
            if( $theme_file_path = amp_wp_load_template( $template_names, $theme_directory, $load, $require_once ) ) {
                return $theme_file_path;
            }
        }
    }
endif;

if( !function_exists( 'amp_wp_load_template' ) ) :
    /**
     * Require the Template File
     *
     * @param string|array  $templates
     * @param string        $theme_directory base directory. scan $templates files into this directory
     * @param bool          $load
     * @param bool          $require_once
     *
     * @see amp_wp_locate_template for parameters documentation
     *
     * @since               1.0.0
     *
     * @return              bool|string
     */
    function amp_wp_load_template( $templates, $theme_directory, $load = FALSE, $require_once = TRUE ) {
        foreach ( (array) $templates as $theme_file ) {
            $theme_file = ltrim( $theme_file, '/' );
            $theme_directory = trailingslashit( $theme_directory );
            if( file_exists( $theme_directory . $theme_file ) ) {
                if( $load ) {
                    if( $require_once ) {
                        require_once $theme_directory . $theme_file;
                    } else {
                        require $theme_directory . $theme_file;
                    }
                }
                return $theme_directory . $theme_file;
            }
        }
        return FALSE;
    }
endif;

// Start Template Hierarchy Related Functions
if( !function_exists( 'amp_wp_head' ) ) :
    /**
     * Fire the amp_wp_head action.
     *
     * @since 1.0.0
     */
    function amp_wp_head() {
        do_action( 'amp_wp_template_head' );
    }
endif;

if( !function_exists( 'amp_wp_footer' ) ) :
    /**
     * Fire the amp_wp_footer action.
     *
     * @since 1.0.0
     */
    function amp_wp_footer() {
        do_action( 'amp_wp_template_footer' );
    }
endif;

if( !function_exists( 'amp_wp_body_class' ) ) :
    /**
     * Display the classes for the body element.
     *
     * @param string|array $class One or more classes to add to the class list.
     *
     * @version 1.0.0
     * @since   1.0.0
     */
    function amp_wp_body_class( $class = '' ) {
        echo 'class="' . join( ' ', get_body_class( $class ) ) . '"';
    }
endif;

if( !function_exists( 'amp_wp_get_header' ) ) {
    /**
     * Load footer template.
     *
     * @param string $name The name of the specialised header.
     *
     * @since 1.0.0
     */
    function amp_wp_get_header( $name = NULL ) {
        $templates = array();
        $name = (string) $name;
        if ( '' !== $name ) {
            $templates[] = "header-{$name}.php";
        }
        $templates[] = 'header.php';
        amp_wp_locate_template( $templates, TRUE );
    }
}

if( !function_exists( 'amp_wp_get_footer' ) ) :
    /**
     * Load footer template.
     *
     * @param string $name Name of the specific footer file to use.
     *
     * @since 1.0.0
     */
    function amp_wp_get_footer( $name = NULL ) {
        $templates = array();
        $name = (string) $name;
        if ( '' !== $name ) {
            $templates[] = "footer-{$name}.php";
        }
        $templates[] = 'footer.php';
        amp_wp_locate_template( $templates, TRUE );
    }
endif;

if( !function_exists( 'amp_wp_get_sidebar' ) ) :
    /**
     * Load sidebar template.
     *
     * @param string $name The name of the specialised sidebar.
     *
     * @since 1.0.0
     */
    function amp_wp_get_sidebar( $name = NULL ) {
        $templates = array();
        $name = (string) $name;
        if ( '' !== $name ) {
            $templates[] = "sidebar-{$name}.php";
        }
        $templates[] = 'sidebar.php';
        amp_wp_locate_template( $templates, TRUE );
    }
endif;

if( !function_exists( 'amp_wp_get_search_form' ) ) :
    /**
     * Retrieve path of search form in current or parent template.
     *
     * @since 1.0.0
     *
     * @return string Full path to index template file.
     */
    function amp_wp_get_search_form() {
        add_theme_support( 'amp-wp-form' );
        return amp_wp_locate_template( 'searchform.php', TRUE );
    }
endif;

if( !function_exists( 'amp_wp_get_template_info' ) ) :
    /**
     * Get active amp theme information
     *
     * array {
     *
     * @type string     $Version      Template Semantic Version Number {@link http://semver.org/}
     * @type string     $ScreenShot   -optional:screenshot.png- Relative Path to ScreenShot.
     * @type int|string $MaxWidth     -optional:780- Maximum Template Container Width.
     * @type string     $TemplateRoot Absolute Path to Template Directory
     * @type string     $Description  Template Description
     * @type string     $AuthorURI    Template Author URL
     * @type string     $Author       Template Author
     * @type string     $Name         Template name
     * @type string     $ThemeURI     Template URL
     * }
     *
     * @since 1.0.0
     *
     * @return array
     */
    function amp_wp_get_template_info() {
        return wp_parse_args(
            apply_filters( 'amp_wp_template_active_template', array() ),
            array(
                'Name'          => __( 'Default Template', 'amp-wp' ),
		'ThemeURI'      => 'https://ampwp.io',
		'Description'   => 'AMPWP Default Template',
		'Author'        => 'Pixelative',
		'AuthorURI'     => 'https://pixelative.co',
		'Version'       => '1.0.0',
		'ScreenShot'    => 'screenshot.png',
		'TemplateRoot'  => AMPWP_TPL_DIR,
		'MaxWidth'      => 768,
                'view'          => 'general'
            )
        );
    }
endif;

if( !function_exists( 'amp_wp_get_template_directory' ) ) :
    /**
     * Get Absolute Path to Active Amp-Wp Theme Directory
     *
     * @version 1.0.0
     * @since   1.0.0
     *
     * @return string
     */
    function amp_wp_get_template_directory() {
        if( $theme_info = amp_wp_get_template_info() ) {
            return $theme_info['TemplateRoot'];
        }
        return '';
    }
endif;

if( !function_exists( 'amp_wp_get_container_width' ) ) :
    /**
     * Get Maximum Container Width
     *
     * @version 1.0.0
     * @since   1.0.0
     *
     * @return  int
     */
    function amp_wp_get_container_width() {
        $info = amp_wp_get_template_info();
        return (int) $info['MaxWidth'];
    }
endif;

if( !function_exists( 'amp_wp_guess_height' ) ) :
    /**
     * Calculate height fits to width
     *
     * @version 1.0.0
     * @since   1.0.0
     *
     * @return  int
     */
    function amp_wp_guess_height() {
        return amp_wp_get_container_width() * 0.75;
    }
endif;

if( !function_exists( 'amp_wp_get_hw_attr' ) ) :
    /**
     * Get Width & Height Attribute
     *
     * @param   string $width  Custom width
     * @param   string $height Custom height
     *
     * @version 1.0.0
     * @since   1.0.0
     *
     * @return  string
     */
    function amp_wp_get_hw_attr( $width = '', $height = '' ) {
        $attr = '';
        if( empty( $width ) ) {
            $width = amp_wp_get_container_width();
        }
        if( $width ) {
            $attr .= 'width="' . intval( $width ) . '" ';
        }
        if( empty( $height ) ) {
            $height = amp_wp_guess_height();
        }
        if( $height ) {
            $attr .= 'height="' . intval( $height ) . '" ';
        }
        return $attr;
    }
endif;

if( !function_exists( 'amp_wp_hw_attr' ) ) :
    /**
     * Get Width & Height Attribute
     *
     * @param string $width
     * @param string $height
     *
     * @since 1.0.0
     *
     * @return int
     */
    function amp_wp_hw_attr( $width = '', $height = '' ) {
        echo amp_wp_get_hw_attr( $width, $height );
    }
endif;

if( !function_exists( 'amp_wp_print_rel_canonical' ) ) :
    /**
     * Print rel="canonical" Tag in AMP Version
     *
     * @version 1.0.0
     * @since   1.0.0
     */
    function amp_wp_print_rel_canonical() {

        $canonical_url = amp_wp_get_canonical_url();
        if ( ! $canonical_url ) {
            $canonical_url = amp_wp_site_url();
        }
        $canonical = Amp_WP_Content_Sanitizer::transform_to_none_amp_url( $canonical_url );
        if ( $canonical ) {
        ?>
            <link rel="canonical" href="<?php echo esc_attr( $canonical ) ?>"/>
        <?php
        }
    }
endif;

if( !function_exists( 'amp_wp_get_canonical_url' ) ) :
    /**
     * Get the active page url
     *
     * @copyright we used WPSEO_Frontend::generate_canonical codes
     *
     * @since     1.0.0
     * @return string the url page on success or empty string otherwise.
     */
    function amp_wp_get_canonical_url() {
        $canonical = '';
        if ( is_singular() ) {
            $queried = get_queried_object();
            $canonical = get_permalink( $queried->ID );

            /**
             * Fix paginated pages canonical.
             */
            if ( get_query_var( 'page' ) > 1 ) {
                $num_pages = ( substr_count( $queried->post_content, '<!--nextpage-->' ) + 1 );
                if ( $num_pages && get_query_var( 'page' ) <= $num_pages ) {
                    if ( ! $GLOBALS['wp_rewrite']->using_permalinks() ) {
                        $canonical = add_query_arg( 'page', get_query_var( 'page' ), $canonical );
                    } else {
                        $canonical = user_trailingslashit( trailingslashit( $canonical ) . get_query_var( 'page' ) );
                    }
                }
            }
        } elseif ( is_search() ) {
            $search_query = get_search_query();

            // Regex catches case when /search/page/N without search term is itself mistaken for search term. R.
            if ( ! empty( $search_query ) && ! preg_match( '|^page/\d+$|', $search_query ) ) {
                $canonical = get_search_link();
            }
        } elseif ( is_front_page() ) {
            $canonical = get_bloginfo( 'url' );
        } elseif ( is_tax() || is_tag() || is_category() ) {
            $term = get_queried_object();
            if ( ! empty( $term ) ) {
                $queried_terms = $GLOBALS['wp_query']->tax_query->queried_terms;
                /**
                 * Check if term archive query is for multiple terms
                 */
                if (
                    ! isset( $queried_terms[ $term->taxonomy ]['terms'] ) ||
                    count( $queried_terms[ $term->taxonomy ]['terms'] ) <= 1
                ) {
                    $term_link = get_term_link( $term, $term->taxonomy );
                    if ( $term_link && ! is_wp_error( $term_link ) ) {
                        $canonical = $term_link;
                    }
                }
            }
        } elseif ( is_post_type_archive() ) {
            $post_type = get_query_var( 'post_type' );
            if ( is_array( $post_type ) ) {
                    $post_type = reset( $post_type );
            }
            $canonical = get_post_type_archive_link( $post_type );
        } elseif ( is_author() ) {
            $canonical = get_author_posts_url( get_query_var( 'author' ), get_query_var( 'author_name' ) );
        } elseif ( is_archive() ) {
            if ( is_date() ) {
                if ( is_day() ) {
                    $canonical = get_day_link( get_query_var( 'year' ), get_query_var( 'monthnum' ), get_query_var( 'day' ) );
                } elseif ( is_month() ) {
                    $canonical = get_month_link( get_query_var( 'year' ), get_query_var( 'monthnum' ) );
                } elseif ( is_year() ) {
                    $canonical = get_year_link( get_query_var( 'year' ) );
                }
            }
        }
        return $canonical;
    }
endif;

if( !function_exists( 'amp_wp_print_rel_amphtml' ) ) :
    /**
     * Print rel=amphtml tag
     *
     * @since 1.0.0
     */
    function amp_wp_print_rel_amphtml() {
        if( !Amp_WP_Public::amp_version_exists() ) {
            return;
        }

        $canonical = Amp_WP_Content_Sanitizer::transform_to_amp_url( amp_wp_get_canonical_url() );
        if( $canonical ) {
        ?>
            <link rel="amphtml" href="<?php echo esc_attr( $canonical ) ?>"/>
        <?php
        }
    }
endif;

if( !function_exists( 'amp_wp_enqueue_boilerplate_style' ) ) :
    /**
     * Print required amp style to head
     *
     * @link  https://github.com/ampproject/amphtml/blob/master/spec/amp-boilerplate.md
     *
     * @since 1.0.0
     */
    function amp_wp_enqueue_boilerplate_style() {
        echo <<<AMP_Boilerplate
<style amp-boilerplate>body{-webkit-animation:-amp-start 8s steps(1,end) 0s 1 normal both;-moz-animation:-amp-start 8s steps(1,end) 0s 1 normal both;-ms-animation:-amp-start 8s steps(1,end) 0s 1 normal both;animation:-amp-start 8s steps(1,end) 0s 1 normal both}@-webkit-keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}@-moz-keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}@-ms-keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}@-o-keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}@keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}</style><noscript><style amp-boilerplate>body{-webkit-animation:none;-moz-animation:none;-ms-animation:none;animation:none}</style></noscript>
AMP_Boilerplate;
    }
endif;

if( !function_exists( 'amp_wp_template_part' ) ) :
    /**
     * Load a Template Part Into a Template
     *
     * @see   get_template_part for more documentation
     *
     * @param string $slug The slug name for the generic template.
     * @param string $name The name of the specialised template.
     *
     * @since 1.0.0
     */
    function amp_wp_template_part( $slug, $name = NULL ) {
        $templates = array();
        $name = (string) $name;
        if ( '' !== $name ) {
            $templates[] = "{$slug}-{$name}.php";
        }
        $templates[] = "{$slug}.php";
        amp_wp_locate_template( $templates, TRUE, FALSE );
    }
endif;

if( !function_exists( 'amp_wp_get_search_page_url' ) ) :
    
    /**
     * Get Search Page URL
     *
     * @version 1.0.0
     * @since   1.0.0
     *
     * @return  string
     */
    function amp_wp_get_search_page_url() {
        return esc_url( add_query_arg( 's', '', amp_wp_site_url() ) );
    }
endif;

if( !function_exists( 'amp_wp_get_thumbnail' ) ) :
    /**
     * Used to get thumbnail image for posts with support of default thumbnail image
     *
     * @param string $thumbnail_size
     * @param null   $post_id
     *
     * @since 1.0.0
     *
     * @return string
     */
    function amp_wp_get_thumbnail( $thumbnail_size = 'thumbnail', $post_id = NULL ) {
        if( is_null( $post_id ) ) {
            $post_id = get_the_ID();
        }

        $thumbnail_id = get_post_thumbnail_id( $post_id );
        $img = wp_get_attachment_image_src( $thumbnail_id, $thumbnail_size );

        if( $img ) {
            return array(
                'src'    => $img[0],
                'width'  => $img[1],
                'height' => $img[2],
            );
        }

        $img = array(
            'src'    => '',
            'width'  => '',
            'height' => '',
        );

        // todo add default thumbnail functionality or extension here
        return $img;
    }
endif;

if( !function_exists( 'amp_wp_element_unique_id' ) ) :
    /**
     * Create Unique Id for Element
     *
     * @version 1.0.0
     * @since   1.0.0
     *
     * @return  string
     */
    function amp_wp_element_unique_id() {
        return uniqid( 'element-' . rand() . '-' );
    }
endif;

if( !function_exists( 'amp_wp_theme_set_menu_walker' ) ) :
    /**
     * Change Menu Walker Only for Main Amp Site Navigation
     *
     * Walker of navigation menu with 'amp-wp-sidebar-nav' theme_location going to change' Amp_WP_Menu_Walker'.
     *
     *
     * @param array $args Array of wp_nav_menu() arguments.
     *
     * @see    Amp_WP_Menu_Walker
     * @see    default-filters.php file
     *
     * @since  1.0.0
     * @return array modified $args
     */
    function amp_wp_theme_set_menu_walker( $args ) {
        if( !is_amp_wp() | !has_nav_menu( $args['theme_location'] ) ) {
                return $args;
        }
        if( apply_filters( 'amp_wp_template_set_menu_walker', $args['theme_location'] === 'amp-wp-sidebar-nav', $args ) ) {
            add_theme_support( 'amp-wp-navigation' );
            $args['walker'] = new Amp_WP_Menu_Walker;
        }
        return $args;
    }
endif;

if( !function_exists( 'amp_wp_direction' ) ) :
    /**
     * Handy Function to Print ‘Right’ String on Rtl Mode and ‘Left’ Otherwise!
     *
     * @param   bool    $reverse
     *
     * @version 1.0.0.
     * @since   1.0.0
     * @return  void
     */
    function amp_wp_direction( $reverse = FALSE ) {
        if ( $reverse ) {
            echo is_rtl() ? 'right' : 'left';
        } else {
            echo is_rtl() ? 'left' : 'right';
        }
    }
endif;

if( !function_exists( 'amp_wp_fix_customizer_statics' ) ) :
    /**
     * Fix for Loading JS/CSS Static Files in customize.php Page
     *
     * @version 1.0.0
     * @since   1.0.0
     */
    function amp_wp_fix_customizer_statics() {
        if( is_customize_preview() ) {
            add_action( 'amp_wp_template_head', 'wp_head', 1, 1 );
            add_action( 'amp_wp_template_footer', 'wp_footer', 1, 1 );
        }
    }
endif;

if( !function_exists( 'amp_wp_site_url' )) :
    /**
     * Get AMP Index Page URL
     *
     * @param   string  $path Optional. Path relative to the site URL. Default empty.
     * @param   string  $before_sp Custom string to append before amp start point. Default empty.
     *
     * @return  string
     * @since   1.0.0
     *
     */
    function amp_wp_site_url($path = '', $before_sp = '') {
    
        $structure = get_option( 'permalink_structure' );
        if( empty( $structure ) ) {
            $url = site_url('/?');
            $url .= Amp_WP_Public::AMP_WP_STARTPOINT;
            
            if( $path ) {
                $path = ltrim($path, '/');
                $url .= "&".str_replace('?','',$path);
            }
            
            return $url;
        } else {
        
            $url = site_url('/');

            //
            $url .= $before_sp ? trailingslashit($before_sp) : '';
            $url .= Amp_WP_Public::AMP_WP_STARTPOINT;

            if( $path ) {
                $path = ltrim($path, '/');
                $url .= "/$path";
            }
            return $url;
        }
    }
endif;

if( !function_exists( 'amp_wp_get_branding_info' ) ) :
    /**
     * Returns Site Branding Info
     *
     * @param   string  $position
     *
     * @version 1.0.0
     * @since   1.0.0
     *
     * @return  array
     */
    function amp_wp_get_branding_info( $position = 'header' ) {
        if( $info = amp_wp_get_global( $position . '-site-info', FALSE ) ) {
            return $info;
        } else {
            $info = array(
                'logo' => '',
                'logo-tag' => '',
                'name' => get_bloginfo( 'name', 'display' ),
                'description' => get_bloginfo( 'description', 'display' ),
            );
        }

        if( $name = amp_wp_get_option( 'amp-wp-' . $position . '-logo-text', FALSE ) ) {
            $info['name'] = $name;
        }
        if( $logo = amp_wp_get_option( 'amp-wp-' . $position . '-logo-img' ) ) {
            $logo = wp_get_attachment_image_src( $logo, 'full' );
            if( $logo ) {
                $logo = array(
                    'src' => $logo[0],
                    'width' => $logo[1],
                    'height' => $logo[2],
                );
            }
            if( !empty( $logo['src'] ) ) {
                $info['logo'] = $logo;
                $info['logo']['alt'] = $info['name'] . ' - ' . $info['description'];
                $info['logo-tag'] = amp_wp_create_image( $info['logo'], FALSE );
            }
        }
        amp_wp_set_global( $position . '-site-info', $info );
        return $info;
    }
endif;

if( !function_exists( 'amp_wp_get_theme_mod' ) ) :
    /**
     * Returns saved value of option or default from config
     *
     * @param   $name
     * @param   bool    $check_customize_preview
     *
     * @todo    remove this function and use amp_wp_get_option instead
     * @since   1.0.0
     *
     * @return  bool|string
     */
    function amp_wp_get_theme_mod( $name, $check_customize_preview = TRUE ) {
        amp_wp_get_default_theme_setting( $name );
        
        $result = get_theme_mod( $name, amp_wp_get_default_theme_setting( $name ) );
        if( !$result && $check_customize_preview ) {
            $result = amp_wp_is_customize_preview();
        }
        return $result;
    }
endif;
// End Template Hierarchy Related Functions

// Start Template Hierarchy
if( !function_exists( 'amp_wp_static_home_page_template' ) ) :
    /**
     * Retrieve Path of Static Homepage Template in Current or Parent Template.
     *
     * @version 1.0.0
     * @since   1.0.0
     * 
     * @return  string  Full Path to Static Home Page Template File.
     */
    function amp_wp_static_home_page_template() {
        if ( $template = amp_wp_page_template() ):
        endif;
        return $template;
    }
endif;

if( !function_exists( 'amp_wp_home_template' ) ) :
    /**
     * Retrieve path of home template in current or parent template.
     *
     * @see   get_home_template()
     *
     * @since 1.0.0
     *
     * @return string Full path to home template file.
     */
    function amp_wp_home_template() {
        $templates = array( 'home.php', 'index.php' );
        return amp_wp_locate_template( $templates );
    }
endif;

if( !function_exists( 'amp_wp_archive_template' ) ) :
    /**
     * Retrieve path of archive template in current or parent template.
     *
     * @see   get_archive_template()
     *
     * @since 1.0.0
     *
     * @return string Full path to archive template file.
     */
    function amp_wp_archive_template() {
        $post_types = array_filter( (array) get_query_var( 'post_type' ) );
        $templates = array();

        if ( count( $post_types ) == 1 ) {
            $post_type = reset( $post_types );
            $templates[] = "archive-{$post_type}.php";
        }
        $templates[] = 'archive.php';
        return amp_wp_locate_template( $templates );
    }
endif;

if( !function_exists( 'amp_wp_archive_post_type_template' ) ) :
    /**
     * Retrieve path of post type archive template in current or parent template.
     *
     * @see   amp_wp_archive_template()
     * @see   get_post_type_archive_template()
     *
     * @since 1.0.0
     *
     * @return string Full path to archive template file.
     */
    function amp_wp_archive_post_type_template() {
        $post_type = get_query_var( 'post_type' );
        if( is_array( $post_type ) ) {
            $post_type = reset( $post_type );
        }

        $obj = get_post_type_object( $post_type );
        if( !$obj->has_archive ) {
            return '';
        }
        return amp_wp_archive_template();
    }
endif;

if( !function_exists( 'amp_wp_single_template' ) ) :
    /**
     * Retrieve path of single template in current or parent template.
     *
     * @since 1.0.0
     *
     * @return string Full path to single template file.
     */
    function amp_wp_single_template() {
        $object = get_queried_object();
        $templates = array();
        if( !empty( $object->post_type ) ) {
            $templates[] = "single-{$object->post_type}-{$object->post_name}.php";
            $templates[] = "single-{$object->post_type}.php";
        }
        $templates[] = "single.php";
        return amp_wp_locate_template( $templates );
    }
endif;

if( !function_exists( 'amp_wp_attachment_template' ) ) :
    /**
     * Retrieve Path of Attachment Template in Current or Parent Template.
     *
     * @global array $posts
     *
     * @since 1.0.0
     *
     * @return string Full path to attachment template file.
     */
    function amp_wp_attachment_template() {
        $attachment = get_queried_object();
        $templates = array();
        if( $attachment ) {
            if( FALSE !== strpos( $attachment->post_mime_type, '/' ) ) {
                list( $type, $subtype ) = explode( '/', $attachment->post_mime_type );
            } else {
                list( $type, $subtype ) = array( $attachment->post_mime_type, '' );
            }

            if( !empty( $subtype ) ) {
                $templates[] = "{$type}-{$subtype}.php";
                $templates[] = "{$subtype}.php";
            }
            $templates[] = "{$type}.php";
        }
        
        $templates[] = 'attachment.php';
        return amp_wp_locate_template( $templates );
    }
endif;

if( !function_exists( 'amp_wp_is_static_home_page' ) ) :
    /**
     * Is current page static home page
     *
     * @return bool true on success or false on failure
     * @since 1.0.0
     */
    function amp_wp_is_static_home_page() {
        return is_home() && apply_filters( 'amp_wp_template_show_on_front', 'posts' ) === 'page' && apply_filters( 'amp_wp_template_page_on_front', 0 );
    }
endif;

if( !function_exists( 'amp_wp_page_template' ) ) :
    /**
     * Retrieve path of page template in current or parent template.
     *
     * @see   get_page_template()
     *
     * @since 1.0.0
     *
     * @return string Full path to page template file.
     */
    function amp_wp_page_template() {
        $id = get_queried_object_id();
        $template = get_page_template_slug();
        $pagename = get_query_var( 'pagename' );

        if( !$pagename && $id ) {
            // If a static page is set as the front page, $pagename will not be set. Retrieve it from the queried object
            $post = get_queried_object();
            if( $post ) { $pagename = $post->post_name; }
        }

        $templates = array();
        if( $template && 0 === validate_file( $template ) ) {
            $templates[] = $template;
        }
        if( $pagename ) { $templates[] = "page-$pagename.php"; }
        if( $id ) { $templates[] = "page-$id.php"; }

        $templates[] = 'page.php';
        return amp_wp_locate_template( $templates );
    }
endif;

if( !function_exists( 'amp_wp_404_template' ) ) :
    /**
     * Retrieve path of 404 template in current or parent template.
     *
     * @see   get_404_template()
     *
     * @since 1.0.0
     *
     * @return string Full path to 404 template file.
     */
    function amp_wp_404_template() {
        return amp_wp_locate_template( '404.php' );
    }
endif;

if( !function_exists( 'amp_wp_search_template' ) ) :
    /**
     * Retrieve path of search template in current or parent template.
     *
     * @see   get_search_template()
     *
     * @since 1.0.0
     *
     * @return string Full path to search template file.
     */
    function amp_wp_search_template() {
        return amp_wp_locate_template( 'search.php' );
    }
endif;

if( !function_exists( 'amp_wp_index_template' ) ) :
    /**
     * Retrieve path of index template in current or parent template.
     *
     * @since 1.0.0
     *
     * @return string Full path to index template file.
     */
    function amp_wp_index_template() {
        return amp_wp_locate_template( 'index.php' );
    }
endif;
// End Template Hierarchy

// Start Global Variables
if( !function_exists( 'amp_wp_set_global' ) ) :
    /**
     * Used to set a global variable.
     *
     * @param   string $id
     * @param   mixed  $value
     *
     * @since 1.0.0
     *
     * @return  mixed
     */
    function amp_wp_set_global( $id, $value ) {
        global $amp_wp_theme_core_globals_cache;
        $amp_wp_theme_core_globals_cache[ $id ] = $value;
    }
endif;

if( !function_exists( 'amp_wp_unset_global' ) ) :
    /**
     * Used to Remove a Global Variable.
     *
     * @param   string $id
     *
     * @since   1.0.0
     *
     * @return  mixed
     */
    function amp_wp_unset_global( $id ) {
        global $amp_wp_theme_core_globals_cache;
        unset( $amp_wp_theme_core_globals_cache[ $id ] );
    }
endif;

if( !function_exists( 'amp_wp_get_global' ) ) :
    /**
     * Used to get a global value.
     *
     * @param   string $id
     * @param   mixed  $default
     *
     * @since   1.0.0
     *
     * @return  mixed
     */
    function amp_wp_get_global( $id, $default = NULL ) {
        global $amp_wp_theme_core_globals_cache;
        if( isset( $amp_wp_theme_core_globals_cache[$id] ) ) {
            return $amp_wp_theme_core_globals_cache[$id];
        } else {
            return $default;
        }
    }
endif;

if( !function_exists( 'amp_wp_echo_global' ) ) :
    /**
     * Used to Print a Global Value.
     *
     * @param   string $id
     * @param   mixed  $default
     *
     * @since 1.0.0
     *
     * @return  mixed
     */
    function amp_wp_echo_global( $id, $default = NULL ) {
        global $amp_wp_theme_core_globals_cache;
        if( isset( $amp_wp_theme_core_globals_cache[$id] ) ) {
            echo $amp_wp_theme_core_globals_cache[$id]; // escaped before
        } else {
            echo $default; // escaped before
        }
    }
endif;

if( !function_exists( 'amp_wp_clear_globals' ) ) :
    /**
     * Used to clear all properties.
     *
     * @since 1.0.0
     *
     * @return  void
     */
    function amp_wp_clear_globals() {
        global $amp_wp_theme_core_globals_cache;
        $amp_wp_theme_core_globals_cache = array();
    }
endif;
// End Global Variables

// Start Blocks Properties
if( !function_exists( 'amp_wp_get_prop' ) ) :
    /**
     * Used to get a property value.
     *
     * @param   string $id
     * @param   mixed  $default
     *
     * @since 1.0.0
     *
     * @return  mixed
     */
    function amp_wp_get_prop( $id, $default = NULL ) {
        global $amp_wp_theme_core_props_cache;
        if ( isset( $amp_wp_theme_core_props_cache[ $id ] ) ) {
            return $amp_wp_theme_core_props_cache[ $id ];
        } else {
            return $default;
        }
    }
endif;

if( !function_exists( 'amp_wp_echo_prop' ) ) :
    /**
     * Used to print a property value.
     *
     * @param   string $id
     * @param   mixed  $default
     *
     * @since 1.0.0
     *
     * @return  mixed
     */
    function amp_wp_echo_prop( $id, $default = NULL ) {
        global $amp_wp_theme_core_props_cache;
        
        if ( isset( $amp_wp_theme_core_props_cache[ $id ] ) ) {
            echo $amp_wp_theme_core_props_cache[ $id ]; // escaped before
        } else {
            echo $default; // escaped before
        }
    }
endif;

if( !function_exists( 'amp_wp_get_prop_class' ) ) :
    /**
     * Used to get block class property.
     *
     * @since 1.0.0
     *
     * @return string
     */
    function amp_wp_get_prop_class() {
        global $amp_wp_theme_core_props_cache;

        if ( isset( $amp_wp_theme_core_props_cache['class'] ) ) {
            return $amp_wp_theme_core_props_cache['class'];
        } else {
            return '';
        }
    }
endif;

if( !function_exists( 'amp_wp_get_prop_thumbnail_size' ) ) :
    /**
     * Used to get block thumbnail size property.
     *
     * @param   string $default
     *
     * @since 1.0.0
     *
     * @return  string
     */
    function amp_wp_get_prop_thumbnail_size( $default = 'thumbnail' ) {
        global $amp_wp_theme_core_props_cache;

        if ( isset( $amp_wp_theme_core_props_cache['thumbnail-size'] ) ) {
            return $amp_wp_theme_core_props_cache['thumbnail-size'];
        } else {
            return $default;
        }
    }
endif;

if( !function_exists( 'amp_wp_set_prop' ) ) :
    /**
     * Used to set a block property value.
     *
     * @param   string $id
     * @param   mixed  $value
     *
     * @since 1.0.0
     *
     * @return  mixed
     */
    function amp_wp_set_prop( $id, $value ) {
        global $amp_wp_theme_core_props_cache;

        $amp_wp_theme_core_props_cache[ $id ] = $value;
    }
endif;

if( !function_exists( 'amp_wp_set_prop_class' ) ) :
    /**
     * Used to set a block class property value.
     *
     * @param   mixed $value
     * @param   bool  $clean
     *
     * @since 1.0.0
     *
     * @return  mixed
     */
    function amp_wp_set_prop_class( $value, $clean = FALSE ) {
        global $amp_wp_theme_core_props_cache;

        if ( $clean ) {
            $amp_wp_theme_core_props_cache['class'] = $value;
        } else {
            $amp_wp_theme_core_props_cache['class'] = $value . ' ' . amp_wp_get_prop_class();
        }
    }
endif;

if( !function_exists( 'amp_wp_set_prop_thumbnail_size' ) ) :
    /**
     * Used to set a block property value.
     *
     * @param   mixed $value
     *
     * @since 1.0.0
     *
     * @return  mixed
     */
    function amp_wp_set_prop_thumbnail_size( $value = 'thumbnail' ) {
        global $amp_wp_theme_core_props_cache;

        $amp_wp_theme_core_props_cache['thumbnail-size'] = $value;
    }
endif;

if( !function_exists( 'amp_wp_unset_prop' ) ) :
    /**
     * Used to remove a property from block property list.
     *
     * @param   string $id
     *
     * @since 1.0.0
     *
     * @return  mixed
     */
    function amp_wp_unset_prop( $id ) {
        global $amp_wp_theme_core_props_cache;

        unset( $amp_wp_theme_core_props_cache[ $id ] );
    }
endif;

if( !function_exists( 'amp_wp_clear_props' ) ) :
    /**
     * Used to clear all properties.
     *
     * @since 1.0.0
     *
     * @return  void
     */
    function amp_wp_clear_props() {
        global $amp_wp_theme_core_props_cache;

        $amp_wp_theme_core_props_cache = array();
    }
endif;
// End Blocks Properties

if( !function_exists( 'amp_wp_get_option' ) ) :
    /**
     * Returns option value
     *
     * @param string $option_key
     * @param string $default_value
     *
     * @since 1.0.0
     *
     * @return string
     */
    function amp_wp_get_option( $option_key = '', $default_value = NULL ) {
        if( empty( $option_key ) ) {
            return $default_value;
        }
        if( is_null( $default_value ) ) {
            $default_value = apply_filters( 'amp-wp-template-default-theme-mod', $default_value, $option_key );
        }
        return get_theme_mod( $option_key, $default_value );
    }
endif;

if( !function_exists( 'amp_wp_get_server_ip_address' ) ) :
    /**
     * Handy Function for Get Server IP
     *
     * @version 1.0.0
     * @since   1.0.0
     *
     * @return  string|null IP address on success or null on failure.
     */
    function amp_wp_get_server_ip_address() {
        global $is_IIS;
        
        $ip = ( $is_IIS && isset( $_SERVER['LOCAL_ADDR'] ) ) ? $_SERVER['LOCAL_ADDR'] : $_SERVER['SERVER_ADDR'];

        if( $ip === '::1' || filter_var( $ip, FILTER_VALIDATE_IP ) !== FALSE ) {
            return $ip;
        }
    }
endif;

if( !function_exists( 'amp_wp_is_localhost' ) ) :
    /**
     * Utility function to detect is site currently running on localhost?
     *
     * @since 1.0.0
     *
     * @return bool
     */
    function amp_wp_is_localhost() {
        $server_ip = amp_wp_get_server_ip_address();
        $server_ip_long = ip2long( $server_ip );
        return $server_ip === '::1' || ( $server_ip_long >= 2130706433 && $server_ip_long <= 2147483646 );
    }
endif;

// Start Queries
if( !function_exists( 'amp_wp_get_query' ) ) :
    /**
     * Used to get current query.
     *
     * @since 1.0.0
     *
     * @return  WP_Query|null
     */
    function amp_wp_get_query() {
        global $amp_wp_theme_core_query;

        // Add default query to ThemeName query if its not added or default query is used.
        if( !is_a( $amp_wp_theme_core_query, 'WP_Query' ) ) {
            global $wp_query;
            $amp_wp_theme_core_query = &$wp_query;
        }
        return $amp_wp_theme_core_query;
    }
endif;

if( !function_exists( 'amp_wp_set_query' ) ) :
    /**
     * Used to get current query.
     *
     * @param   WP_Query $query
     *
     * @since 1.0.0
     *
     */
    function amp_wp_set_query( &$query ) {
        global $amp_wp_theme_core_query;
        $amp_wp_theme_core_query = $query;
    }
endif;

if( !function_exists( 'amp_wp_clear_query' ) ) :
    /**
     * Used to get current query.
     *
     * @param   bool    $reset_query
     *
     * @since   1.0.0
     *
     */
    function amp_wp_clear_query( $reset_query = TRUE ) {
        global $amp_wp_theme_core_query;
        $amp_wp_theme_core_query = NULL;

        // This will remove obscure bugs that occur when the previous wp_query object is not destroyed properly before another is set up.
        if ( $reset_query ) { wp_reset_query(); }
    }
endif;
// End Queries

// Start Post Related Functions
if( !function_exists( 'amp_wp_have_posts' ) ) :
    /**
     * Used for checking have posts in advanced way!
     *
     * @since 1.0.0
     */
    function amp_wp_have_posts() {
        // Add default query to amp_wp_template query if its not added or default query is used.
        if( !amp_wp_get_query() instanceof WP_Query ) {
            global $wp_query;
            amp_wp_set_query( $wp_query );
        }

        // If Count Customized
        if( amp_wp_get_prop( 'posts-count', NULL ) != NULL ) {
            if( amp_wp_get_prop( 'posts-counter', 1 ) > amp_wp_get_prop( 'posts-count' ) ) {
                return FALSE;
            } else {
                if( amp_wp_get_query()->current_post + 1 < amp_wp_get_query()->post_count ) {
                    return TRUE;
                } else {
                    return FALSE;
                }
            }
        } else {
            return amp_wp_get_query()->current_post + 1 < amp_wp_get_query()->post_count;
        }
    }
endif;

if( !function_exists( 'amp_wp_the_post' ) ) :
    /**
     * Custom the_post for custom counter functionality
     *
     * @since 1.0.0
     */
    function amp_wp_the_post() {
        // If count customized
        if( amp_wp_get_prop( 'posts-count', NULL ) != NULL ) {
            amp_wp_set_prop( 'posts-counter', absint( amp_wp_get_prop( 'posts-counter', 1 ) ) + 1 );
        }

        // Do default the_post
        amp_wp_get_query()->the_post();
    }
endif;

if( !function_exists( 'amp_wp_the_post_thumbnail' ) ) :
    /**
     * Display the post thumbnail.
     *
     * @since 1.0.0
     *
     * @param string $size
     * @param string $attr
     */
    function amp_wp_the_post_thumbnail( $size = 'post-thumbnail', $attr = '' ) {
        if( empty( $attr ) ) {
            $attr = array(
                'alt' => the_title_attribute( array( 'echo' => FALSE ) ),
                'layout' => 'responsive',
            );
        }
        the_post_thumbnail( $size, $attr );
    }
endif;

if( !function_exists( 'amp_wp_human_number_format' ) ) :
    /**
     * Format number to human friendly style
     *
     * @param $number
     *
     * @return string
     */
    function amp_wp_human_number_format( $number ) {
        if( !is_numeric( $number ) ) {
            return $number;
        }
        if( $number >= 1000000 ) {
            return round( ( $number / 1000 ) / 1000, 1 ) . "M";
        } elseif ( $number >= 100000 ) {
            return round( $number / 1000, 0 ) . "k";
        } else {
            return @number_format( $number );
        }
    }
endif;

if( !function_exists( 'amp_wp_get_archive_title_fields' ) ) :
    /**
     * Handy function used to get archive pages title fields
     *
     * @since 1.0.0
     *
     * @return array
     */
    function amp_wp_get_archive_title_fields() {
        $icon = '';
        $pre_title = '';
        $title = '';

        if( is_category() ) {
            $icon = '<i class="fa fa-folder"></i>';
            $pre_title = amp_wp_translation_get( 'browsing_category' );
            $title = single_cat_title( '', FALSE );
        } elseif ( is_tag() ) {
            $icon = '<i class="fa fa-tag"></i>';
            $pre_title = amp_wp_translation_get( 'browsing_tag' );
            $title = single_tag_title( '', FALSE );
        } elseif ( is_author() ) {
            $icon = '<i class="fa fa-user-circle"></i>';
            $pre_title = amp_wp_translation_get( 'browsing_author' );
            $title = '<span class="vcard">' . get_the_author() . '</span>';
        } elseif ( is_year() ) {
            $icon = '<i class="fa fa-calendar"></i>';
            $pre_title = amp_wp_translation_get( 'browsing_yearly' );
            $title = get_the_date( _x( 'Y', 'yearly archives date format', 'amp-wp' ) );
        } elseif ( is_month() ) {
            $icon = '<i class="fa fa-calendar"></i>';
            $pre_title = amp_wp_translation_get( 'browsing_monthly' );
            $title = get_the_date( _x( 'F Y', 'monthly archives date format', 'amp-wp' ) );
        } elseif ( is_day() ) {
            $icon = '<i class="fa fa-calendar"></i>';
            $pre_title = amp_wp_translation_get( 'browsing_daily' );
            $title = get_the_date( _x( 'F j, Y', 'daily archives date format', 'amp-wp' ) );
        } elseif ( is_tax( 'post_format' ) ) {
            if ( is_tax( 'post_format', 'post-format-aside' ) ) {
                $icon = '<i class="fa fa-pencil"></i>';
                $pre_title = amp_wp_translation_get( 'browsing_archive' );
                $title = amp_wp_translation_get( 'asides' );
            } elseif ( is_tax( 'post_format', 'post-format-gallery' ) ) {
                $icon = '<i class="fa fa-camera"></i>';
                $pre_title = amp_wp_translation_get( 'browsing_archive' );
                $title = amp_wp_translation_get( 'galleries' );
            } elseif ( is_tax( 'post_format', 'post-format-image' ) ) {
                $icon = '<i class="fa fa-camera"></i>';
                $pre_title = amp_wp_translation_get( 'browsing_archive' );
                $title = amp_wp_translation_get( 'images' );
            } elseif ( is_tax( 'post_format', 'post-format-video' ) ) {
                $icon = '<i class="fa fa-video-camera"></i>';
                $pre_title = amp_wp_translation_get( 'browsing_archive' );
                $title = amp_wp_translation_get( 'videos' );
            } elseif ( is_tax( 'post_format', 'post-format-quote' ) ) {
                $icon = '<i class="fa fa-quote-' . amp_wp_direction() . '"></i>';
                $pre_title = amp_wp_translation_get( 'browsing_archive' );
                $title = amp_wp_translation_get( 'quotes' );
            } elseif ( is_tax( 'post_format', 'post-format-link' ) ) {
                $icon = '<i class="fa fa-link"></i>';
                $pre_title = amp_wp_translation_get( 'browsing_archive' );
                $title = amp_wp_translation_get( 'links' );
            } elseif ( is_tax( 'post_format', 'post-format-status' ) ) {
                $icon = '<i class="fa fa-refresh"></i>';
                $pre_title = amp_wp_translation_get( 'browsing_archive' );
                $title = amp_wp_translation_get( 'statuses' );
            } elseif ( is_tax( 'post_format', 'post-format-audio' ) ) {
                $icon = '<i class="fa fa-music"></i>';
                $pre_title = amp_wp_translation_get( 'browsing_archive' );
                $title = amp_wp_translation_get( 'audio' );
            } elseif ( is_tax( 'post_format', 'post-format-chat' ) ) {
                $icon = '<i class="fa fa-coffee"></i>';
                $pre_title = amp_wp_translation_get( 'browsing_archive' );
                $title = amp_wp_translation_get( 'chats' );
            }
        } elseif ( is_post_type_archive() ) {
                $icon      = '<i class="fa fa-archive"></i>';
                $pre_title = amp_wp_translation_get( 'browsing_archive' );
                $title     = post_type_archive_title( '', FALSE );
        } elseif ( is_tax() ) {
                $tax = get_taxonomy( get_queried_object()->taxonomy );
                $icon = '<i class="fa fa-archive"></i>';
                $pre_title = amp_wp_translation_get( 'browsing_archive' );
                $title = sprintf( __( '%1$s: %2$s', 'beetter-amp' ), $tax->labels->singular_name, single_term_title( '', FALSE ) );
        } else {
            $icon = '<i class="fa fa-archive"></i>';
            $pre_title = amp_wp_translation_get( 'browsing' );
            $title = amp_wp_translation_get( 'archive' );
        }
        return compact( 'icon', 'pre_title', 'title' );
    }
endif;

if( !function_exists( 'amp_wp_post_classes' ) ) :
    /**
     * Handy function to generate class attribute for posts
     *
     * @since 1.0.0
     *
     * @param string|array $append One or more classes to add to the class list.
     */
    function amp_wp_post_classes( $append = '' ) {
        $class = get_post_class( $append );

        if( !has_post_thumbnail() ) {
            $class[] = 'no-thumbnail';
        } else {
            $class[] = 'have-thumbnail';
        }

        $class[] = 'clearfx';
        $class = str_replace( 'hentry', '', join( ' ', $class ) );
        echo 'class = "' . $class . '"';
        unset( $class );
    }
endif;

if( !function_exists( 'amp_wp_related_posts_query_args' ) ) :
    /**
     * Get Related Posts
     *
     * @param integer      $count  number of posts to return
     * @param string       $type
     * @param integer|null $post_id
     * @param array        $params query extra arguments
     *
     * @return array  query args array
     */
    function amp_wp_related_posts_query_args( $count = 5, $type = 'cat', $post_id = NULL, $params = array() ) {
        $post = get_post( $post_id );
        if( !$post_id && isset( $post->ID ) ) {
            $post_id = $post->ID;
        }

        $args = array(
            'posts_per_page'      => $count,
            'post__not_in'        => array( $post_id ),
            'ignore_sticky_posts' => TRUE,
        );
        switch ( $type ) {
            case 'cat':
                $args['category__in'] = wp_get_post_categories( $post_id );
            break;
            case 'tag':
                $tag_in = wp_get_object_terms( $post_id, 'post_tag', array( 'fields' => 'ids' ) );
                if ( $tag_in && ! is_wp_error( $tag_in ) ) {
                    $args['tag__in'] = $tag_in;
                }
            break;
            case 'author':
                if( isset( $post->post_author ) ) {
                    $args['author'] = $post->post_author;
                }
            break;
            case 'cat-tag':
                $args['category__in'] = wp_get_post_categories( $post_id );
                $args['tag__in'] = wp_get_object_terms( $post_id, 'post_tag', array( 'fields' => 'ids' ) );
            break;
            case 'cat-tag-author':
                $args['category__in'] = wp_get_post_categories( $post_id );

                if ( isset( $post->post_author ) ) {
                    $args['author'] = $post->post_author;
                }

                $tag_in = wp_get_object_terms( $post_id, 'post_tag', array( 'fields' => 'ids' ) );
                if ( $tag_in && ! is_wp_error( $tag_in ) ) {
                    $args['tag__in'] = $tag_in;
                }
            break;

            case 'rand':
            case 'random':
            case 'randomly':
                $args['orderby'] = 'rand';
            break;
        }

        if ( $params ) {
            $args = array_merge( $args, $params );
        }

        return $args;
    }
endif;

if( !function_exists( 'amp_wp_get_post_parent' ) ) :
    /**
     * Get post parent
     *
     * @param int $attachment_id
     *
     * @since 1.0.0
     * @return bool|WP_Post WP_Post on success or false on failure
     */
    function amp_wp_get_post_parent( $attachment_id = NULL ) {
        $attachment = ( empty( $attachment_id ) && isset( $GLOBALS['post'] ) ) ? $GLOBALS['post'] : get_post( $attachment_id );
        
        // Validate attachment
        if( !$attachment || is_wp_error( $attachment ) ) { return FALSE; }

        $parent = FALSE;
        if( !empty( $attachment->post_parent ) ) {
            $parent = get_post( $attachment->post_parent );
            if( !$parent || is_wp_error( $parent ) ) {
                $parent = FALSE;
            }
        }
        return $parent;
    }
endif;
// End Post Related Functions

// Start Scial Share Post Related Functions
if( !function_exists( 'amp_wp_social_shares_count' ) ) :
    /**
     * Returns all social share count for post.
     *
     * @param $sites
     *
     * @since 1.0.0
     *
     * @return array|mixed|void
     */
    function amp_wp_social_shares_count( $sites ) {
        $sites = array_intersect_key( $sites, array(
            // Valid sites
            'facebook'    => '',
            'twitter'     => '',
            'google_plus' => '',
            'pinterest'   => '',
            'linkedin'    => '',
            'tumblr'      => '',
            'reddit'      => '',
            'stumbleupon' => '',
        ));

        // Disable social share in localhost
        if( amp_wp_is_localhost() ) { return array(); }

        $post_id = get_queried_object_id();
        $expired = (int) get_post_meta( $post_id, '_amp_wp_social_share_interval', TRUE );
        $results = array();
        $update_cache = FALSE;

        if( $expired < time() ) {
            $update_cache = TRUE;
        } else {
            // get count from cache storage
            foreach( $sites as $site_id => $is_active ) {
                if( !$is_active ) { continue; }

                $count_number = get_post_meta( $post_id, '_amp_wp_social_share_'.$site_id, TRUE );
                $update_cache = $count_number === '';

                if( $update_cache ) { break; }
                $results[ $site_id ] = $count_number;
            }
        }

        if( $update_cache ) { // Update cache storage if needed
            $current_page = amp_wp_social_share_guss_current_page();
            foreach( $sites as $site_id => $is_active ) {
                if( !$is_active ) { continue; }
                $count_number = amp_wp_social_share_fetch_count( $site_id, $current_page['page_permalink'] );
                update_post_meta( $post_id, '_amp_wp_social_share_' . $site_id, $count_number );
                $results[ $site_id ] = $count_number;
            }
            /**
             * This filter can be used to change share count time.
             */
            $cache_time = apply_filters( 'amp_wp_social_share_cache_time', MINUTE_IN_SECONDS * 120, $post_id );
            update_post_meta( $post_id, '_amp_wp_social_share_interval', time() + $cache_time );
        }
        return apply_filters( 'amp_wp_social_share_count', $results );
    }
endif;

if( !function_exists( 'amp_wp_social_share_guss_current_page' ) ) :
    /**
     * Detects and returns current page info for social share
     *
     * @version 1.0.0
     * @since   1.0.0
     *
     * @return  array
     */
    function amp_wp_social_share_guss_current_page() {
        $page_permalink  = '';
        $need_short_link = amp_wp_get_theme_mod( 'amp-wp-post-social-share-link-format' ) === 'short';

        if( is_home() || is_front_page() ) {
            $page_title = get_bloginfo( 'name' );
        } elseif( is_single( get_the_ID() ) && ! ( is_front_page() ) ) {
            $page_title = get_the_title();
            if ( $need_short_link ) {
                $page_permalink = wp_get_shortlink();
            }
        } elseif( is_page() ) {
            $page_title = get_the_title();
            if( $need_short_link ) {
                $page_permalink = wp_get_shortlink();
            }
        } elseif( is_category() || is_tag() || is_tax() ) {
            $page_title = single_term_title( '', FALSE );
            if( $need_short_link ) {
                $queried_object = get_queried_object();
                if( !empty( $queried_object->taxonomy ) ) {
                    if( 'category' == $queried_object->taxonomy ) {
                        $page_permalink = "?cat=$queried_object->term_id";
                    } else {
                        $tax = get_taxonomy( $queried_object->taxonomy );
                        if ( $tax->query_var ) {
                            $page_permalink = "?$tax->query_var=$queried_object->slug";
                        } else {
                            $page_permalink = "?taxonomy=$queried_object->taxonomy&term=$queried_object->term_id";
                        }
                    }
                    $page_permalink = home_url( $page_permalink );
                }
            }
        } else {
            $page_title = get_bloginfo( 'name' );
        }

        if( !$page_permalink ) {
            $page_permalink = amp_wp_guess_none_amp_url();
        }
        return compact( 'page_title', 'page_permalink' );
    }
endif;

if( !function_exists( 'amp_wp_social_share_get_li' ) ) :
    /**
     * Used for generating lis for social share list
     *
     * @param string  $id
     * @param    bool $show_title
     * @param    int  $count_label
     *
     * @since 1.0.0
     *
     * @return string
     */
    function amp_wp_social_share_get_li( $id = '', $show_title = TRUE, $count_label = 0 ) {
        if( empty( $id ) ) { return ''; }

        static $initialized;
        static $page_title;
        static $page_permalink;

        wp_reset_postdata(); // fix for after other loops

        if( is_null( $initialized ) ) {
            $cur_page = amp_wp_social_share_guss_current_page();
            $page_title = esc_attr( $cur_page['page_title'] );
            $page_permalink = urlencode( $cur_page['page_permalink'] );
            $initialized = TRUE;
        }
        switch ( $id ) {
            case 'facebook':
                $link = 'https://www.facebook.com/sharer.php?u=' . $page_permalink;
                $title = __( 'Facebook', 'amp-wp' );
                $icon = '<i class="fa fa-facebook"></i>';
            break;
            case 'twitter':
                $by = '';
                $link = 'https://twitter.com/share?text=' . $page_title . $by . '&url=' . $page_permalink;
                $title = __( 'Twitter', 'amp-wp' );
                $icon = '<i class="fa fa-twitter"></i>';
            break;
            case 'google_plus':
                $link = 'https://plus.google.com/share?url=' . $page_permalink;
                $title = __( 'Google+', 'amp-wp' );
                $icon = '<i class="fa fa-google"></i>';
            break;
            case 'pinterest':
                $_img_src = wp_get_attachment_image_src( get_post_thumbnail_id(), 'full' );
                $link = 'https://pinterest.com/pin/create/button/?url=' . $page_permalink . '&media=' . $_img_src[0] . '&description=' . $page_title;
                $title = __( 'Pinterest', 'amp-wp' );
                $icon = '<i class="fa fa-pinterest"></i>';
            break;
            case 'linkedin':
                $link = 'https://www.linkedin.com/shareArticle?mini=true&url=' . $page_permalink . '&title=' . $page_title;
                $title = __( 'Linkedin', 'amp-wp' );
                $icon = '<i class="fa fa-linkedin"></i>';
            break;
            case 'tumblr':
                $link = 'https://www.tumblr.com/share/link?url=' . $page_permalink . '&name=' . $page_title;
                $title = __( 'Tumblr', 'amp-wp' );
                $icon = '<i class="fa fa-tumblr"></i>';
            break;
            case 'email':
                $link = "mailto:?subject=" . $page_title . "&body=" . $page_permalink;
                $title = __( 'Email', 'amp-wp' );
                $icon = '<i class="fa fa-envelope-open"></i>';
            break;
            case 'telegram':
                $link = 'https://telegram.me/share/url?url=' . $page_permalink . '&text=' . $page_title;
                $title = __( 'Telegram', 'amp-wp' );
                $icon = '<i class="fa fa-send"></i>';
            break;
            case 'whatsapp':
                $link = 'whatsapp://send?text=' . $page_title . ' %0A%0A ' . $page_permalink;
                $title = __( 'WhatsApp', 'amp-wp' );
                $icon = '<i class="fa fa-whatsapp"></i>';
            break;
            case 'digg':
                $link = 'https://www.digg.com/submit?url=' . $page_permalink;
                $title = __( 'Digg', 'amp-wp' );
                $icon = '<i class="fa fa-digg"></i>';
            break;
            case 'reddit':
                $link = 'https://reddit.com/submit?url=' . $page_permalink . '&title=' . $page_title;
                $title = __( 'ReddIt', 'amp-wp' );
                $icon = '<i class="fa fa-reddit-alien"></i>';
            break;
            case 'stumbleupon':
                $link = 'https://www.stumbleupon.com/submit?url=' . $page_permalink . '&title=' . $page_title;
                $title = __( 'StumbleUpon', 'amp-wp' );
                $icon = '<i class="fa fa-stumbleupon"></i>';
            break;
            case 'vk':
                $link = 'https://vkontakte.ru/share.php?url=' . $page_permalink;
                $title = __( 'VK', 'amp-wp' );
                $icon = '<i class="fa fa-vk"></i>';
            break;
            default:
                return '';
        }

        $extra_classes = $count_label ? ' has-count' : '';
        $output = '<li class="social-item '.esc_attr( $id ).$extra_classes.'"><a href="' . $link . '" target="_blank" rel="nofollow" class="amp-wp-button-el">';

        $output .= $icon;
        if( $show_title ) {
            $output .= '<span class="item-title">'.wp_kses( $title, amp_wp_trans_allowed_html() ).'</span>';
        }
        if ( $count_label ) {
            $output .= sprintf( '<span class="number">%s</span>', amp_wp_human_number_format( $count_label ) );
        }
        $output .= '</a></li>';
        return $output;
    } // amp_wp_social_share_get_li
endif;
// End Scial Share Post Related Functions

// Start Comments Related Functions
if( !function_exists( 'amp_wp_get_comment_link' ) ) :
    /**
     * Returns Non-AMP comment link for AMP post
     *
     * @since 1.0.0
     *
     * @return int
     */
    function amp_wp_get_comment_link() {
        $prev = Amp_WP_Content_Sanitizer::turn_url_transform_off_on( FALSE );
        $comments_url = get_permalink() . '#respond';
        Amp_WP_Content_Sanitizer::turn_url_transform_off_on( $prev );
        return $comments_url;
    }
endif;

if( !function_exists( 'amp_wp_comment_reply_link' ) ) :
    /**
     * Retrieve the HTML Content for Reply to Comment Link.
     *
     * @param   array $args @see comment_reply_link for documentation
     *
     * @version 1.0.0
     * @since   1.0.0
     * 
     * @return void|false|string
     */
    function amp_wp_comment_reply_link( $args = array() ) {
        $current_value = Amp_WP_Content_Sanitizer::$enable_url_transform;
        Amp_WP_Content_Sanitizer::$enable_url_transform = FALSE;
        $result = comment_reply_link( $args );
        Amp_WP_Content_Sanitizer::$enable_url_transform = $current_value;
        return $result;
    }
endif;

if( !function_exists( 'amp_wp_comment_link' ) ) :
    /**
     * Non-AMP comment link for AMP post
     *
     * @since 1.0.0
     *
     * @return int
     */
    function amp_wp_comment_link() {
        echo esc_attr( amp_wp_get_comment_link() );
    }
endif;

if( !function_exists( 'amp_wp_list_comments' ) ) :
    /**
     * List comments for a particular post.
     *
     * @see wp_list_comments for more documentation
     *
     * @param   string|array    $args   wp_list_comments first argument
     * @param   array   $comment_query_args comment query arguments
     *
     * @global  WP_Query    $wp_query    Global WP_Query instance.
     * 
     * @since   1.0.0
     *
     * @return  string|void
     */
    function amp_wp_list_comments( $args = array(), $comment_query_args = array() ) {
        global $wp_query;
        $post_id = get_the_ID();
        $comment_args = array(
            'orderby' => 'comment_date_gmt',
            'order' => 'ASC',
            'status' => 'approve',
            'post_id' => $post_id,
            'no_found_rows' => FALSE,
        );
        if( empty( $args['callback'] ) && amp_wp_locate_template( 'comment-item.php' ) ) {
            $args['callback'] = 'amp_wp_comment_item';
            $args['end-callback'] = 'amp_wp_comment_item_end';
        }
        $comments = new WP_Comment_Query( array_merge( $comment_args, $comment_query_args ) );

        /**
         * Filters the comments array.
         *
         * @see comments_template
         *
         * @param array $comments Array of comments supplied to the comments template.
         * @param int   $post_ID  Post ID.
         */
        $comments_list = apply_filters( 'comments_array', $comments->comments, $post_id );

        // Save comments list to comments property of the main query to enable wordpress core
        // function such as get_next_comments_link works in comments page
        $wp_query->comments = $comments_list;
        return wp_list_comments( $args );
    }
endif;

if( !function_exists( 'amp_wp_comments_paginate' ) ) :
    /**
     * Displays pagination links for the comments on the current post.
     *
     * @see   wp_list_comments for more documentation
     *
     * @since 1.0.0
     *
     */
    function amp_wp_comments_paginate() {
        // Nav texts with RTL support
        if ( is_rtl() ) {
            $prev = '<i class="fa fa-angle-double-right"></i> ' . amp_wp_translation_get( 'comment_previous' );
            $next = amp_wp_translation_get( 'comment_next' ) . ' <i class="fa fa-angle-double-left"></i>';
        } else {
            $next = amp_wp_translation_get( 'comment_next' ) . ' <i class="fa fa-angle-double-right"></i>';
            $prev = '<i class="fa fa-angle-double-left"></i> ' . amp_wp_translation_get( 'comment_previous' );
        }
        previous_comments_link( $prev );
        next_comments_link( $next );
    }
endif;

if( !function_exists( 'amp_wp_comment_item' ) ) :
    /**
     * Load comment-item.php file in the current or parent template.
     *
     * @staticvar string $path
     * @param WP_Comment_Query $comment
     * 
     * @version 1.0.0
     * @since   1.0.0
     */
    function amp_wp_comment_item( $comment ) {
        static $path;
        if( is_null( $path ) ) {
            $path = amp_wp_locate_template( 'comment-item.php' );
        }
        if( $path ) { include $path; }
    }
endif;

if( !function_exists( 'amp_wp_comment_item_end' ) ) :
    /**
     * Print li Closing Tag
     *
     * @version 1.0.0
     * @since   1.0.0
     */
    function amp_wp_comment_item_end() {
        echo '</li>';
    }
endif;
// End Comments Related Functions

if( !function_exists( 'amp_wp_min_suffix' ) ) :
    /**
     * Returns Appropriate Suffix for Static Files (Min or Not)
     *
     * @param string $before
     * @param string $after
     *
     * @return string
     */
    function amp_wp_min_suffix( $before = '', $after = '' ) {
        static $suffix;
        if( !$suffix ) {
            $suffix = ( ( defined( 'WP_DEBUG' ) && WP_DEBUG ) || ( defined( 'AMPWP_DEV_MODE' ) && AMPWP_DEV_MODE ) ) ? '' : '.min';
        }
        return "$before$suffix$after";
    }
endif;