/**

const VERSION = '3.5.0';

/* Image upload directory */

private $__upload_dir;

/* Image upload URL */

private $__upload_url;

/* Database object */

private $__db;

/* Plugin text domain */

protected $_textDomain;

/* Title for dfi metabox */

protected $_metabox_title;

/* Users post type filter for dfi metabox */

protected $_userFilter;

/**

public function __construct() {

$this->_textDomain = 'dynamic-featured-image';

//plugin update warning

add_action( 'in_plugin_update_message-' . plugin_basename( __FILE__ ), array( $this, 'update_notice' ) );

add_action( 'admin_enqueue_scripts', array( $this, 'enqueue_admin_scripts' ) );

add_action( 'add_meta_boxes', array( $this, 'initialize_featured_box' ) );

add_action( 'save_post', array( $this, 'save_meta' ) );

add_action( 'plugins_loaded', array( $this, 'load_plugin_textdomain' ) );

//handle ajax request

add_action( 'wp_ajax_dfiMetaBox_callback', array( $this, 'ajax_callback' ) );

//add action links

add_filter( 'plugin_action_links_' . plugin_basename( __FILE__ ), array( $this, 'dfi_action_links' ) );

//media uploader custom fields

add_filter( 'attachment_fields_to_edit', array( $this, 'media_attachment_custom_fields' ), 10, 2 );

add_filter( 'attachment_fields_to_save', array( $this, 'media_attachment_custom_fields_save' ), 10, 2 );

//get the site protocol

$protocol = $this->__get_protocol();

$this->__upload_dir = wp_upload_dir();

$this->__upload_url = preg_replace( '#^https?://#', '', $this->__upload_dir['baseurl'] );

//add protocol to the upload url

$this->__upload_url = $protocol . $this->__upload_url;

//post type filter added by user

$this->_userFilter = array();

global $wpdb;

$this->__db = $wpdb;

} // END __construct()

/**

private function __get_protocol() {

return ( ( ! empty( $_SERVER['HTTPS'] ) && $_SERVER['HTTPS'] != 'off' ) ||

( ! empty( $_SERVER['SERVER_PORT'] ) && $_SERVER['SERVER_PORT'] == 443 ) ) ? "https://" : "http://";

}

/**

public function enqueue_admin_scripts() {

//enqueue styles

wp_enqueue_style( 'style-dfi', plugins_url( '/css/style-dfi.css', __FILE__ ), array(), self::VERSION );

wp_enqueue_style( 'dashicons', plugins_url( '/css/dashicons.css', __FILE__ ), array(), self::VERSION );

//register script

wp_register_script( 'scripts-dfi', plugins_url( '/js/script-dfi.js', __FILE__ ), array( 'jquery' ), self::VERSION );

//localize the script with required data

wp_localize_script(

'scripts-dfi',

'WP_SPECIFIC',

array(

'upload_url' => $this->__upload_url,

'metabox_title' => __( $this->_metabox_title, $this->_textDomain ),

'mediaSelector_title' => __( 'Dynamic Featured Image - Media Selector', $this->_textDomain ),

'mediaSelector_buttonText' => __( 'Set Featured Image', $this->_textDomain )

)

);

//enqueue scripts

wp_enqueue_script( 'scripts-dfi' );

} // END initialize_components()

/**

public function dfi_action_links( $links ) {

$upgrade_link = array(

'<a href="http://ankitpokhrel.com.np/blog/downloads/dynamic-featured-image-pro/" target="_blank">Upgrade to Premium</a>'

);

return array_merge( $links, $upgrade_link );

} // END dfi_action_links()

/**

public function initialize_featured_box() {

global $post;

//make metabox title dynamic

$this->_metabox_title = apply_filters( 'dfi_set_metabox_title', __( "Featured Image" ) );

$featuredData = get_post_meta( $post->ID, 'dfiFeatured', true );

$totalFeatured = count( $featuredData );

$defaultFilter = array( 'attachment', 'revision', 'nav_menu_item' );

$this->_userFilter = apply_filters( 'dfi_post_type_user_filter', $this->_userFilter );

$filter = array_merge( $defaultFilter, $this->_userFilter );

$postTypes = get_post_types();

$postTypes = array_diff( $postTypes, $filter );

$postTypes = apply_filters( 'dfi_post_types', $postTypes );

if ( ! empty( $featuredData ) && $totalFeatured >= 1 ) {

$i = 2;

foreach ( $featuredData as $featured ) {

self::_dfi_add_meta_box( $postTypes, $featured, $i );

$i ++;

}

} else {

self::_dfi_add_meta_box( $postTypes );

}

} // END initialize_featured_box()

/**

protected function _get_number_translation( $number ) {

if ( $number <= 9 ) {

return __( $number, $this->_textDomain );

} else {

$pieces = str_split( $number, 1 );

$buffer = '';

foreach ( $pieces as $piece ) {

$buffer .= __( $piece, $this->_textDomain );

}

return $buffer;

}

}

/**

private function _dfi_add_meta_box( $postTypes, $featured = null, $i = null ) {

if ( ! is_null( $i ) ) {

foreach ( $postTypes as $type ) {

add_meta_box(

'dfiFeaturedMetaBox-' . $i,

__( $this->_metabox_title, $this->_textDomain ) . " " . self::_get_number_translation( $i ),

array( $this, 'featured_meta_box' ),

$type,

'side',

'low',

array( $featured, $i + 1 )

);

add_filter( "postbox_classes_{$type}_dfiFeaturedMetaBox-" . $i, array( $this, 'add_metabox_classes' ) );

}

} else {

foreach ( $postTypes as $type ) {

add_meta_box(

'dfiFeaturedMetaBox',

__( $this->_metabox_title, $this->_textDomain ) . " " . __( 2, $this->_textDomain ),

array( $this, 'featured_meta_box' ),

$type,

'side',

'low',

array( null, null )

);

add_filter( "postbox_classes_{$type}_dfiFeaturedMetaBox", array( $this, 'add_metabox_classes' ) );

}

}

}

/**

private function _separate( $urlString, $state = 'thumb' ) {

$imagePiece = explode( ',', $urlString );

if ( $state == 'thumb' ) {

return isset( $imagePiece[0] ) ? $imagePiece[0] : null;

}

return isset( $imagePiece[1] ) ? $imagePiece[1] : null;

}

/**

protected function _nonce_field( $key ) {

return wp_nonce_field( plugin_basename( __FILE__ ), $key, true, false );

}

/**

public function featured_meta_box( $post, $featured ) {

$featuredImg = $featured['args'][0];

$featuredId = is_null( $featured['args'][1] ) ? 2 : -- $featured['args'][1];

$featuredImgTrimmed = $featuredImgFull = $featuredImg;

if ( ! is_null( $featuredImg ) ) {

$featuredImgTrimmed = self::_separate( $featuredImg );

$featuredImgFull = self::_separate( $featuredImg, 'full' );

}

try {

$thumbnail = $this->get_image_thumb( $this->__upload_url . $featuredImgFull, 'medium' );

if ( is_null( $thumbnail ) ) {

//medium sized thumbnail image is missing

throw new Exception( "Medium size image not found", 1 );

}

} catch ( Exception $e ) {

//since medium sized thumbnail image was not found,

//let's set full image url as thumbnail

$thumbnail = $featuredImgFull;

}

//Add a nonce field

echo $this->_nonce_field( 'dfi_fimageplug-' . $featuredId );

echo self::_get_featured_box( $featuredImgTrimmed, $featuredImg, $featuredId, $thumbnail, $post->ID );

} // END featured_meta_box()

/**

private function _get_featured_box( $featuredImgTrimmed, $featuredImg, $featuredId, $thumbnail, $postId ) {

$hasFeaturedImage = ! empty( $featuredImgTrimmed ) ? 'hasFeaturedImage' : '';

$thumbnail = ! is_null( $thumbnail ) ? $thumbnail : '';

$dfiEmpty = is_null( $featuredImgTrimmed ) ? 'dfiImgEmpty' : '';

return "<a href='javascript:void(0)' class='dfiFeaturedImage {$hasFeaturedImage}' title='" . __( 'Set Featured Image', $this->_textDomain ) . "' data-post-id='" . $postId . "'><span class='dashicons dashicons-camera'></span></a><br/>

<img src='" . $thumbnail . "' class='dfiImg {$dfiEmpty}'/>

<a href='javascript:void(0)' data-id='{$featuredId}' data-id-local='" . $this->_get_number_translation( ( $featuredId + 1 ) ) . "' class='dfiAddNew dashicons dashicons-plus' title='" . __( 'Add New', $this->_textDomain ) . "'></a>

<a href='javascript:void(0)' class='dfiRemove dashicons dashicons-minus' title='" . __( 'Remove', $this->_textDomain ) . "'></a>

<input type='hidden' name='dfiFeatured[]' value='{$featuredImg}' class='dfiImageHolder' />";

}

/**

public function ajax_callback() {

$featuredId = isset( $_POST['id'] ) ? (int) strip_tags( trim( $_POST['id'] ) ) : null;

if ( is_null( $featuredId ) ) {

return;

}

echo $this->_nonce_field( 'dfi_fimageplug-' . $featuredId );

?>

<a href="javascript:void(0)" class="dfiFeaturedImage"

title="<?php echo __( 'Set Featured Image', $this->_textDomain ) ?>"><span

class="dashicons dashicons-camera"></span></a><br/>

<img src="" class="dfiImg dfiImgEmpty"/>

<div class="dfiLinks">

<a href="javascript:void(0)" data-id="<?php echo $featuredId ?>"

data-id-local="<?php echo self::_get_number_translation( ( $featuredId + 1 ) ) ?>"

class="dfiAddNew dashicons dashicons-plus" title="<?php echo __( 'Add New', $this->_textDomain ) ?>"></a>

<a href="javascript:void(0)" class="dfiRemove dashicons dashicons-minus"

title="<?php echo __( 'Remove', $this->_textDomain ) ?>"></a>

</div>

<div class="dfiClearFloat"></div>

<input type="hidden" name="dfiFeatured[]" value="" class="dfiImageHolder"/>

<?php

wp_die( '' );

} // END ajax_callback())

/**

public function add_metabox_classes( $classes ) {

array_push( $classes, 'featured-meta-box' );

return $classes;

} // END add_metabox_classes()

/**

public function media_attachment_custom_fields( $form_fields, $post ) {

$form_fields['dfi-link-to-image'] = array(

'label' => _( 'Link to Image' ),

'input' => 'text',

'value' => get_post_meta( $post->ID, '_dfi_link_to_image', true )

);

return $form_fields;

} // END media_attachment_custom_fields()

/**

public function media_attachment_custom_fields_save( $post, $attachment ) {

if ( isset( $attachment['dfi-link-to-image'] ) ) {

update_post_meta( $post['ID'], '_dfi_link_to_image', $attachment['dfi-link-to-image'] );

}

return $post;

} // END media_attachment_custom_fields_save()

/**

public function save_meta( $post_id ) {

//Check autosave

if ( defined( 'DOING_AUTOSAVE' ) && DOING_AUTOSAVE ) {

return false;

}

if ( $this->_verify_nonces() ) {

//Check permission before saving data

if ( current_user_can( 'edit_posts', $post_id ) && isset( $_POST['dfiFeatured'] ) ) {

update_post_meta( $post_id, 'dfiFeatured', $_POST['dfiFeatured'] );

}

}

return false;

} // END save_meta()

/**

protected function _verify_nonces() {

$keys = array_keys( $_POST );

foreach ( $keys as $key ) {

if ( preg_match( '/dfi_fimageplug-\d+$/', $key ) ) {

//Verify nonce

if ( ! wp_verify_nonce( $_POST[ $key ], plugin_basename( __FILE__ ) ) ) {

return false;

}

}

}

return true;

} // END _verify_nonces()

/**

public function update_notice() {

$info = __( 'ATTENTION! Please read the <a href="https://github.com/ankitpokhrel/Dynamic-Featured-Image/wiki" target="_blank">DOCUMENTATION</a> properly before update.', $this->_textDomain );

echo '<div style="color:red; padding:7px 0;">' . strip_tags( $info, '<a><b><i><span>' ) . '</div>';

} // END update_notice()

/** Helper functions */

private function execute_query( $query ) {

return $this->__db->get_var( $query );

}

/**

protected function _get_attachment_id( $image_url ) {

return self::execute_query( $this->__db->prepare( "SELECT ID FROM " . $this->__db->posts . " WHERE guid = %s", $image_url ) );

} // END _get_attachment_id()

/**

public function get_image_url( $attachment_id, $size = 'full' ) {

$image_thumb = wp_get_attachment_image_src( $attachment_id, $size );

return empty( $image_thumb ) ? null : $image_thumb[0];

} // END get_image_url()

/**

public function get_image_thumb( $image_url, $size = 'thumbnail' ) {

$attachment_id = $this->get_image_id( $image_url );

$image_thumb = wp_get_attachment_image_src( $attachment_id, $size );

return empty( $image_thumb ) ? null : $image_thumb[0];

} // END get_image_thumb()

/**

public function get_image_id( $image_url ) {

$attachment_id = $this->_get_attachment_id( $image_url );

if ( is_null( $attachment_id ) ) {

//check if the image is edited image

//and try to get the attachment id

$image_url = str_replace( $this->__upload_url . "/", '', $image_url );

$row = self::execute_query( $this->__db->prepare( "SELECT post_id FROM " . $this->__db->postmeta . " WHERE meta_value = %s", $image_url ) );

if ( ! is_null( $row ) ) {

$attachment_id = $row;

}

}

return $attachment_id;

}

/**

public function get_image_title( $image_url ) {

return self::execute_query( $this->__db->prepare( "SELECT post_title FROM " . $this->__db->posts . " WHERE guid = %s", $image_url ) );

} // END get_image_title()

/**

public function get_image_title_by_id( $attachment_id ) {

return self::execute_query( $this->__db->prepare( "SELECT post_title FROM " . $this->__db->posts . " WHERE ID = %d", $attachment_id ) );

} // END get_image_title_by_id()

/**

public function get_image_caption( $image_url ) {

return self::execute_query( $this->__db->prepare( "SELECT post_excerpt FROM " . $this->__db->posts . " WHERE guid = %s", $image_url ) );

} // END get_image_caption()

/**

public function get_image_caption_by_id( $attachment_id ) {

return self::execute_query( $this->__db->prepare( "SELECT post_excerpt FROM " . $this->__db->posts . " WHERE ID = %d", $attachment_id ) );

} // END get_image_caption_by_id()

/**

public function get_image_alt( $image_url ) {

$attachment = $this->__db->get_col( $this->__db->prepare( "SELECT ID FROM " . $this->__db->posts . " WHERE guid = %s", $image_url ) );

$alt = null;

if ( ! empty( $attachment ) ) {

$alt = get_post_meta( $attachment[0], '_wp_attachment_image_alt' );

}

return ( is_null( $alt ) || empty( $alt ) ) ? null : $alt[0];

} // END get_image_alt()

/**

public function get_image_alt_by_id( $attachment_id ) {

$alt = get_post_meta( $attachment_id, '_wp_attachment_image_alt' );

return empty( $alt ) ? null : $alt[0];

} // END get_image_alt_by_id()

/**

public function get_image_description( $image_url ) {

return self::execute_query( $this->__db->prepare( "SELECT post_content FROM " . $this->__db->posts . " WHERE guid = %s", $image_url ) );

} // END get_image_description()

/**

public function get_image_description_by_id( $attachment_id ) {

return self::execute_query( $this->__db->prepare( "SELECT post_content FROM " . $this->__db->posts . " WHERE ID = %d", $attachment_id ) );

} // END get_image_description_by_id()

/**

public function get_link_to_image( $attachment_id ) {

return get_post_meta( $attachment_id, '_dfi_link_to_image', true );

} // END get_link_to_image()

/**

public function get_post_attachment_ids( $post_id ) {

$dfiImages = get_post_meta( $post_id, 'dfiFeatured', true );

$retVal = array();

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

foreach ( $dfiImages as $dfiImage ) {

$dfiImageFull = self::_separate( $dfiImage, 'full' );

$retVal[] = $this->get_image_id( $this->__upload_url . $dfiImageFull );

}

}

return $retVal;

} // END get_post_attachment_ids()

/**

public function get_nth_featured_image( $position, $post_id = null ) {

if ( is_null( $post_id ) ) {

global $post;

$post_id = $post->ID;

}

$featured_images = $this->get_featured_images( $post_id );

return isset( $featured_images[ $position - 2 ] ) ? $featured_images[ $position - 2 ] : null;

} // END get_nth_featured_image()

/**

public function is_attached( $attachment_id, $post_id ) {

if ( empty( $attachment_id ) ) {

return false;

}

$attachment_ids = $this->get_post_attachment_ids( $post_id );

return in_array( $attachment_id, $attachment_ids ) ? true : false;

} // END is_attached()

/**

public function get_featured_images( $post_id = null ) {

if ( is_null( $post_id ) ) {

global $post;

$post_id = $post->ID;

}

$dfiImages = get_post_meta( $post_id, 'dfiFeatured', true );

$retImages = array();

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

$dfiImages = array_filter( $dfiImages );

$count = 0;

foreach ( $dfiImages as $dfiImage ) {

$dfiImageTrimmed = self::_separate( $dfiImage );

$dfiImageFull = self::_separate( $dfiImage, 'full' );

try {

$retImages[ $count ]['thumb'] = $this->_get_real_upload_path( $dfiImageTrimmed );

$retImages[ $count ]['full'] = $this->_get_real_upload_path( $dfiImageFull );

$retImages[ $count ]['attachment_id'] = $this->get_image_id( $retImages[ $count ]['full'] );

} catch ( Exception $e ) { /* Ignore the exception and continue with other featured images */

}

$count ++;

}

}

return $retImages;

} // END get_featured_images()

/**

protected function _get_real_upload_path( $img ) {

//check if upload path is already attached

if ( strpos( $img, $this->__upload_url ) !== false || preg_match('/https?:\/\//', $img) ) {

return $img;

}

return $this->__upload_url . $img;

} // END _get_real_upload_path()

/**

public function get_all_featured_images( $post_id = null ) {

if ( is_null( $post_id ) ) {

global $post;

$post_id = $post->ID;

}

$thumbnail_id = get_post_thumbnail_id( $post_id );

$featured_image_array = array();

if ( ! empty( $thumbnail_id ) ) {

$featured_image = array(

'thumb' => wp_get_attachment_thumb_url( $thumbnail_id ),

'full' => wp_get_attachment_url( $thumbnail_id ),

'attachment_id' => $thumbnail_id

);

$featured_image_array[] = $featured_image;

}

$dfiImages = $this->get_featured_images( $post_id );

$all_featured_images = array_merge( $featured_image_array, $dfiImages );

return $all_featured_images;

}

/**

public function load_plugin_textdomain() {

load_plugin_textdomain(

$this->_textDomain,