fooplugins / foogallery

includes/class-foogallery-upgrade.php

<?php
/**
 * Class used to upgrade internal gallery settings when needed
 * Date: 19/07/2017
 */
if ( ! class_exists( 'FooGallery_Upgrade' ) ) {

	class FooGallery_Upgrade {

PSR1 recommends that each class must be in a namespace of at least one level to avoid collisions.

		function __construct() {

It is generally recommended to explicitly declare the visibility for methods.

			//add_action( 'foogallery_admin_new_version_detected', array( $this, 'upgrade_all_galleries' ) );

62% of this comment could be valid code. Did you maybe forget this after debugging?

			add_filter( 'foogallery_settings_upgrade', array( $this, 'upgrade_gallery_settings' ), 10, 2 );

			add_filter( 'foogallery_admin_settings_override', array( $this, 'add_force_upgrade_setting' ) );
			add_action( 'foogallery_admin_settings_custom_type_render_setting', array( $this, 'render_force_upgrades_settings' ) );
			add_action( 'wp_ajax_foogallery_force_upgrade', array( $this, 'ajax_force_upgrade' ) );

			add_action( 'add_meta_boxes_' . FOOGALLERY_CPT_GALLERY, array( $this, 'add_meta_boxes_to_gallery' ) );
		}

		public function upgrade_gallery_settings( $settings, $foogallery ) {
			$old_settings = get_post_meta( $foogallery->ID, FOOGALLERY_META_SETTINGS_OLD, true );

			//we have old settings - so upgrade them!!!
			if ( !empty( $old_settings ) ) {
				$upgrade_helper = new FooGallery_Upgrade_Helper();
				$settings = $upgrade_helper->perform_gallery_settings_upgrade( $foogallery );
			}

			return $settings;
		}

		public function add_meta_boxes_to_gallery( $post ) {

The parameter $post is not used and could be removed.

			if ( foogallery_get_setting( 'enable_debugging' ) ) {
				add_meta_box(
					'foogallery_upgrade_debug',
					__( 'Settings Upgrade Debugging', 'foogallery' ),
					array( $this, 'render_upgrade_debug_metabox' ),
					FOOGALLERY_CPT_GALLERY,
					'normal',
					'low'
				);
			}
		}

		public function render_upgrade_debug_metabox( $post ) {
			$gallery = FooGallery::get( $post );

			if ( $gallery->is_new() ) {
				return;
			}

			$old_settings = get_post_meta( $gallery->ID, FOOGALLERY_META_SETTINGS_OLD, true );
			$new_settings = $gallery->settings; // get_post_meta( $gallery->ID, FOOGALLERY_META_SETTINGS, true );

50% of this comment could be valid code. Did you maybe forget this after debugging?

			$upgrade_helper = new FooGallery_Upgrade_Helper();
			$upgrade_settings = $upgrade_helper->build_new_settings( $gallery );

			if ( is_array( $old_settings ) ) { ksort( $old_settings ); }
            if ( is_array( $new_settings ) ) { ksort( $new_settings ); }
            if ( is_array( $upgrade_settings ) ) { ksort( $upgrade_settings ); }
			?>
			<style>
				#foogallery_upgrade_debug .inside { overflow: scroll; }
				#foogallery_upgrade_debug table { font-size: 0.8em; }
				#foogallery_upgrade_debug td { vertical-align: top; }
			</style>
			<table>
				<tr>
					<td><h3>Old Settings</h3></td>
					<td><h3>New Settings</h3></td>
					<td><h3>Upgrade Settings</h3></td>
				</tr>
				<tr>
					<td><?php var_dump( $old_settings ); ?></td>
					<td><?php var_dump( $new_settings ); ?></td>
					<td><?php var_dump( $upgrade_settings ); ?></td>
				</tr>
			</table>
			<?php
		}

		function ajax_force_upgrade() {

It is generally recommended to explicitly declare the visibility for methods.

			if ( check_admin_referer( 'foogallery_force_upgrade' ) && current_user_can( 'install_plugins' ) ) {

				//clear any and all previous upgrades!
				delete_post_meta_by_key( '_foogallery_settings' );
				$this->upgrade_all_galleries();

				_e('The BETA upgrade process has been run!', 'foogallery' );
				die();
			}
		}

		function add_force_upgrade_setting( $settings ) {

It is generally recommended to explicitly declare the visibility for methods.

			$settings['settings'][] = array(
				'id'      => 'force_upgrade',
				'title'   => __( 'Force Upgrade', 'foogallery' ),
				'desc'    => sprintf( __( 'Force the BETA upgrade process to run. This may sometimes be needed if the upgrade did not run automatically. Any changes you have made to galleries after updating will be lost. THERE IS NO UNDO.', 'foogallery' ), foogallery_plugin_name() ),
				'type'    => 'force_upgrade',
				'tab'     => 'advanced'
			);

			return $settings;
		}

		function render_force_upgrades_settings( $args ) {

It is generally recommended to explicitly declare the visibility for methods.

			if ( 'force_upgrade' === $args['type'] ) { ?>
				<div class="foogallery_settings_ajax_container">
					<input type="button" data-action="foogallery_force_upgrade" data-confirm="<?php _e('Are you sure? Any changes you have made since updating will be lost. There is no undo!', 'foogallery'); ?>" data-response="replace_container" data-nonce="<?php echo esc_attr( wp_create_nonce( 'foogallery_force_upgrade' ) ); ?>" class="button-primary foogallery_settings_ajax foogallery_force_upgrade" value="<?php _e( 'Run Upgrade Process', 'foogallery' ); ?>">
					<span style="position: absolute" class="spinner"></span>
				</div>
			<?php }
		}

		function upgrade_all_galleries() {

It is generally recommended to explicitly declare the visibility for methods.

			$galleries = foogallery_get_all_galleries();

			foreach ( $galleries as $gallery ) {
				$new_settings = get_post_meta( $gallery->ID, FOOGALLERY_META_SETTINGS, true );
				$old_settings = get_post_meta( $gallery->ID, FOOGALLERY_META_SETTINGS_OLD, true );

				//only upgrade galleries that need to be
				if ( !is_array($new_settings) && is_array($old_settings) ) {
					$upgrade_helper = new FooGallery_Upgrade_Helper();
					$upgrade_helper->perform_gallery_settings_upgrade( $gallery );
				}
			}
		}
	}
}

if ( ! class_exists( 'FooGallery_Upgrade_Helper' ) ) {

	class FooGallery_Upgrade_Helper {

PSR1 recommends that each class should be in its own file to aid autoloaders.

PSR1 recommends that each class must be in a namespace of at least one level to avoid collisions.

		function perform_gallery_settings_upgrade( $foogallery ) {

It is generally recommended to explicitly declare the visibility for methods.

			//build up the new settings
			$new_settings = $this->build_new_settings( $foogallery );

			if ( !empty( $new_settings ) ) {

                //save the new settings
                add_post_meta($foogallery->ID, FOOGALLERY_META_SETTINGS, $new_settings, true);

                //clear any cache that may be saved for the gallery
                delete_post_meta($foogallery->ID, FOOGALLERY_META_CACHE);

                //clear any previously calculated thumb dimensions
                delete_post_meta($foogallery->ID, FOOGALLERY_META_THUMB_DIMENSIONS);
            }

			return $new_settings;
		}

		function build_new_settings( $foogallery ) {

It is generally recommended to explicitly declare the visibility for methods.

			$mappings = array(
				array(
					'id' => 'border-style',
					'value' => 'border-style-square-white',
					'new' => array(
						array ( 'id' => 'theme', 'value' => 'fg-light' ),
						array ( 'id' => 'border_size', 'value' => 'fg-border-thin' ),
						array ( 'id' => 'drop_shadow', 'value' => 'fg-shadow-small' ),
						array ( 'id' => 'rounded_corners', 'value' => '' ),
						array ( 'id' => 'inner_shadow', 'value' => '' ),
					)
				),
				array(
					'id' => 'border-style',
					'value' => 'border-style-circle-white',
					'new' => array(
						array ( 'id' => 'theme', 'value' => 'fg-light' ),
						array ( 'id' => 'border_size', 'value' => 'fg-border-thin' ),
						array ( 'id' => 'drop_shadow', 'value' => 'fg-shadow-small' ),
						array ( 'id' => 'rounded_corners', 'value' => 'fg-round-full' ),
						array ( 'id' => 'inner_shadow', 'value' => '' ),
					)
				),
				array(
					'id' => 'border-style',
					'value' => 'border-style-square-black',
					'new' => array(
						array ( 'id' => 'theme', 'value' => 'fg-dark' ),
						array ( 'id' => 'border_size', 'value' => 'fg-border-thin' ),
						array ( 'id' => 'drop_shadow', 'value' => 'fg-shadow-small' ),
						array ( 'id' => 'rounded_corners', 'value' => '' ),
						array ( 'id' => 'inner_shadow', 'value' => '' ),
					)
				),
				array(
					'id' => 'border-style',
					'value' => 'border-style-circle-black',
					'new' => array(
						array ( 'id' => 'theme', 'value' => 'fg-dark' ),
						array ( 'id' => 'border_size', 'value' => 'fg-border-thin' ),
						array ( 'id' => 'drop_shadow', 'value' => 'fg-shadow-small' ),
						array ( 'id' => 'rounded_corners', 'value' => 'fg-round-full' ),
						array ( 'id' => 'inner_shadow', 'value' => '' ),
					)
				),
				array(
					'id' => 'border-style',
					'value' => 'border-style-inset',
					'new' => array(
						array ( 'id' => 'theme', 'value' => 'fg-light' ),
						array ( 'id' => 'border_size', 'value' => '' ),
						array ( 'id' => 'drop_shadow', 'value' => 'fg-shadow-small' ),
						array ( 'id' => 'rounded_corners', 'value' => '' ),
						array ( 'id' => 'inner_shadow', 'value' => 'fg-shadow-inset-large' ),
					)
				),
				array(
					'id' => 'border-style',
					'value' => 'border-style-rounded',
					'new' => array(
						array ( 'id' => 'theme', 'value' => 'fg-light' ),
						array ( 'id' => 'border_size', 'value' => '' ),
						array ( 'id' => 'drop_shadow', 'value' => '' ),
						array ( 'id' => 'rounded_corners', 'value' => 'fg-round-small' ),
						array ( 'id' => 'inner_shadow', 'value' => '' ),
					)
				),
				array(
					'id' => 'border-style',
					'value' => '',
					'new' => array(
						array ( 'id' => 'theme', 'value' => 'fg-light' ),
						array ( 'id' => 'border_size', 'value' => '' ),
						array ( 'id' => 'drop_shadow', 'value' => '' ),
						array ( 'id' => 'rounded_corners', 'value' => '' ),
						array ( 'id' => 'inner_shadow', 'value' => '' ),
					)
				),

				array(
					'id' => 'spacing',
					'value' => 'spacing-width-0',
					'new' => array(
						array ( 'id' => 'spacing', 'value' => 'fg-gutter-0' )
					)
				),
				array(
					'id' => 'spacing',
					'value' => 'spacing-width-5',
					'new' => array(
						array ( 'id' => 'spacing', 'value' => 'fg-gutter-5' )
					)
				),
				array(
					'id' => 'spacing',
					'value' => 'spacing-width-10',
					'new' => array(
						array ( 'id' => 'spacing', 'value' => 'fg-gutter-10' )
					)
				),
				array(
					'id' => 'spacing',
					'value' => 'spacing-width-15',
					'new' => array(
						array ( 'id' => 'spacing', 'value' => 'fg-gutter-15' )
					)
				),
				array(
					'id' => 'spacing',
					'value' => 'spacing-width-20',
					'new' => array(
						array ( 'id' => 'spacing', 'value' => 'fg-gutter-20' )
					)
				),
				array(
					'id' => 'spacing',
					'value' => 'spacing-width-25',
					'new' => array(
						array ( 'id' => 'spacing', 'value' => 'fg-gutter-25' )
					)
				),

				array(
					'id' => 'alignment',
					'value' => 'alignment-left',
					'new' => array(
						array ( 'id' => 'alignment', 'value' => 'fg-left' )
					)
				),
				array(
					'id' => 'alignment',
					'value' => 'alignment-center',
					'new' => array(
						array ( 'id' => 'alignment', 'value' => 'fg-center' )
					)
				),
				array(
					'id' => 'alignment',
					'value' => 'alignment-right',
					'new' => array(
						array ( 'id' => 'alignment', 'value' => 'fg-right' )
					)
				),

				array(
					'id' => 'loading_animation',
					'value' => 'yes',
					'new' => array(
						array ( 'id' => 'loading_icon', 'value' => 'fg-loading-default' )
					)
				),
				array(
					'id' => 'loading_animation',
					'value' => 'no',
					'new' => array(
						array ( 'id' => 'loading_icon', 'value' => 'fg-loading-none' )
					)
				),

                //Icon hover effects
				array(
					'id' => 'hover-effect-type',
					'value' => '', //Icon
					'new' => array(
						array ( 'id' => 'hover_effect_preset', 'value' => 'fg-custom' ),
						array ( 'id' => 'hover_effect_caption_visibility', 'value' => '' ),
						array ( 'id' => 'hover_effect_transition', 'value' => 'fg-hover-fade' ),
						array ( 'id' => 'hover_effect_icon', 'value' => 'fg-hover-zoom' ),
						array ( 'id' => 'caption_title_source', 'value' => 'none' ),
						array ( 'id' => 'caption_desc_source', 'value' => 'none' )
					)
				),

                array(
                    'id' => 'hover-effect',
                    'value' => 'hover-effect-zoom',
                    'preconditions' => array (
                        array ( 'id' => 'hover-effect-type', 'value' => '' ),
                    ),
                    'new' => array(
                        array ( 'id' => 'hover_effect_icon', 'value' => 'fg-hover-zoom' )
                    )
                ),

                array(
                    'id' => 'hover-effect',
                    'value' => 'hover-effect-zoom2',
                    'preconditions' => array (
                        array ( 'id' => 'hover-effect-type', 'value' => '' ),
                    ),
                    'new' => array(
                        array ( 'id' => 'hover_effect_icon', 'value' => 'fg-hover-zoom2' )
                    )
                ),

                array(
                    'id' => 'hover-effect',
                    'value' => 'hover-effect-zoom3',
                    'preconditions' => array (
                        array ( 'id' => 'hover-effect-type', 'value' => '' ),
                    ),
                    'new' => array(
                        array ( 'id' => 'hover_effect_icon', 'value' => 'fg-hover-zoom3' )
                    )
                ),

                array(
                    'id' => 'hover-effect',
                    'value' => 'hover-effect-plus',
                    'preconditions' => array (
                        array ( 'id' => 'hover-effect-type', 'value' => '' ),
                    ),
                    'new' => array(
                        array ( 'id' => 'hover_effect_icon', 'value' => 'fg-hover-plus' )
                    )
                ),

                array(
                    'id' => 'hover-effect',
                    'value' => 'hover-effect-circle-plus',
                    'preconditions' => array (
                        array ( 'id' => 'hover-effect-type', 'value' => '' ),
                    ),
                    'new' => array(
                        array ( 'id' => 'hover_effect_icon', 'value' => 'fg-hover-circle-plus' )
                    )
                ),

                array(
                    'id' => 'hover-effect',
                    'value' => 'hover-effect-eye',
                    'preconditions' => array (
                        array ( 'id' => 'hover-effect-type', 'value' => '' ),
                    ),
                    'new' => array(
                        array ( 'id' => 'hover_effect_icon', 'value' => 'fg-hover-eye' )
                    )
                ),

                array(
					'id' => 'hover-effect-type',
					'value' => 'hover-effect-tint', //Dark Tint
					'new' => array(
						array ( 'id' => 'hover_effect_preset', 'value' => '' ),
						array ( 'id' => 'hover_effect', 'value' => 'fg-hover-tint' ),
                        array ( 'id' => 'hover_effect_caption_visibility', 'value' => '' ),
					)
				),

				array(
					'id' => 'hover-effect-type',
					'value' => 'hover-effect-color', //Colorize
					'new' => array(
						array ( 'id' => 'hover_effect_preset', 'value' => '' ),
						array ( 'id' => 'hover_effect_color', 'value' => 'fg-hover-colorize' ),
                        array ( 'id' => 'hover_effect_icon', 'value' => '' ),
                        array ( 'id' => 'hover_effect_caption_visibility', 'value' => '' ),
					)
				),

				array(
					'id' => 'hover-effect-type',
					'value' => 'hover-effect-none', //None
					'new' => array(
						array ( 'id' => 'hover_effect_preset', 'value' => '' ),
                        array ( 'id' => 'hover_effect_icon', 'value' => '' ),
                        array ( 'id' => 'hover_effect_caption_visibility', 'value' => '' ),
					)
				),

				array(
					'id' => 'hover-effect-type',
					'value' => 'hover-effect-caption', //Caption
					'new' => array(
						array ( 'id' => 'hover_effect_preset', 'value' => 'fg-custom' ),
						array ( 'id' => 'hover_effect_caption_visibility', 'value' => 'fg-caption-hover' ),
						array ( 'id' => 'hover_effect_transition', 'value' => 'fg-hover-fade' ),
                        array ( 'id' => 'hover_effect_icon', 'value' => '' )
					)
				),

				array(
					'id' => 'caption-hover-effect',
					'value' => 'hover-caption-simple',
                    'preconditions' => array (
                        array ( 'id' => 'hover-effect-type', 'value' => 'hover-effect-caption' ),
                    ),
					'new' => array(
						array ( 'id' => 'hover_effect_transition', 'value' => 'fg-hover-fade' ),
					)
				),
				array(
					'id' => 'caption-hover-effect',
					'value' => 'hover-caption-full-drop',
                    'preconditions' => array (
                        array ( 'id' => 'hover-effect-type', 'value' => 'hover-effect-caption' ),
                    ),
					'new' => array(
						array ( 'id' => 'hover_effect_transition', 'value' => 'fg-hover-slide-down' ),
					)
				),
				array(
					'id' => 'caption-hover-effect',
					'value' => 'hover-caption-full-fade',
                    'preconditions' => array (
                        array ( 'id' => 'hover-effect-type', 'value' => 'hover-effect-caption' ),
                    ),
					'new' => array(
						array ( 'id' => 'hover_effect_transition', 'value' => 'fg-hover-fade' ),
					)
				),
				array(
					'id' => 'caption-hover-effect',
					'value' => 'hover-caption-push',
                    'preconditions' => array (
                        array ( 'id' => 'hover-effect-type', 'value' => 'hover-effect-caption' ),
                    ),
					'new' => array(
						array ( 'id' => 'hover_effect_transition', 'value' => 'fg-hover-push' ),
					)
				),
				array(
					'id' => 'caption-hover-effect',
					'value' => 'hover-caption-simple-always',
                    'preconditions' => array (
                        array ( 'id' => 'hover-effect-type', 'value' => 'hover-effect-caption' ),
                    ),
					'new' => array(
						array ( 'id' => 'hover_effect_caption_visibility', 'value' => 'fg-caption-always' ),
					)
				),

				array(
					'id' => 'caption-content',
					'value' => 'title',
					'new' => array(
						array ( 'id' => 'caption_title_source', 'value' => '' ),
						array ( 'id' => 'caption_desc_source', 'value' => 'none' )
					)
				),
				array(
					'id' => 'caption-content',
					'value' => 'desc',
					'new' => array(
						array ( 'id' => 'caption_title_source', 'value' => 'none' ),
						array ( 'id' => 'caption_desc_source', 'value' => '' )
					)
				),
				array(
					'id' => 'caption-content',
					'value' => 'both',
					'new' => array(
						array ( 'id' => 'caption_title_source', 'value' => '' ),
						array ( 'id' => 'caption_desc_source', 'value' => '' )
					)
				),

				//masonry layout mappings
				array(
					'id' => 'layout',
					'value' => '2col',
					'new' => array(
						array ( 'id' => 'layout', 'value' => 'col2' )
					)
				),

				array(
					'id' => 'layout',
					'value' => '3col',
					'new' => array(
						array ( 'id' => 'layout', 'value' => 'col3' )
					)
				),

				array(
					'id' => 'layout',
					'value' => '4col',
					'new' => array(
						array ( 'id' => 'layout', 'value' => 'col4' )
					)
				),

				array(
					'id' => 'layout',
					'value' => '5col',
					'new' => array(
						array ( 'id' => 'layout', 'value' => 'col5' )
					)
				),

				array(
					'id' => 'gutter_percent',
					'value' => 'no-gutter',
					'new' => array(
						array ( 'id' => 'gutter_percent', 'value' => 'fg-gutter-none' )
					)
				),

				array(
					'id' => 'gutter_percent',
					'value' => 'large-gutter',
					'new' => array(
						array ( 'id' => 'gutter_percent', 'value' => 'fg-gutter-large' )
					)
				),

				array(
					'id' => 'center_align',
					'value' => 'default',
					'new' => array(
						array ( 'id' => 'alignment', 'value' => '' )
					)
				),

				array(
					'id' => 'center_align',
					'value' => 'center',
					'new' => array(
						array ( 'id' => 'alignment', 'value' => 'fg-center' )
					)
				),

				array(
					'id' => 'hover_zoom',
					'value' => 'default',
					'new' => array(
						array ( 'id' => 'hover_effect_scale', 'value' => 'fg-hover-scale' )
					)
				),

				array(
					'id' => 'hover_zoom',
					'value' => 'none',
					'new' => array(
						array ( 'id' => 'hover_effect_scale', 'value' => '' )
					)
				),


				//image viewer upgrades
				array(
					'id' => 'theme',
					'value' => 'fiv-dark',
					'new' => array(
						array ( 'id' => 'theme', 'value' => 'fg-dark' )
					)
				),
				array(
					'id' => 'theme',
					'value' => '',
					'new' => array(
						array ( 'id' => 'theme', 'value' => 'fg-light' )
					)
				),
				array(
					'id' => 'theme',
					'value' => 'fiv-custom',
					'new' => array(
						array ( 'id' => 'theme', 'value' => 'fg-light' )
					)
				),

				array(
					'id' => 'alignment',
					'value' => 'alignment-left',
					'new' => array(
						array ( 'id' => 'alignment', 'value' => 'fg-left' )
					)
				),
				array(
					'id' => 'alignment',
					'value' => 'alignment-center',
					'new' => array(
						array ( 'id' => 'alignment', 'value' => 'fg-center' )
					)
				),
				array(
					'id' => 'alignment',
					'value' => 'alignment-right',
					'new' => array(
						array ( 'id' => 'alignment', 'value' => 'fg-right' )
					)
				),

				//simple portfolio
				array(
					'id' => 'caption_position',
					'value' => 'bf-captions-above',
					'new' => array(
						array ( 'id' => 'caption_position', 'value' => 'fg-captions-top' )
					)
				),

				//single thumbnail
				array(
					'id' => 'caption_style',
					'value' => 'caption-simple',
					'new' => array(
						array ( 'id' => 'hover_effect_preset', 'value' => 'fg-custom' ),
						array ( 'id' => 'hover_effect_caption_visibility', 'value' => 'fg-caption-always' )
					)
				),
				array(
					'id' => 'caption_style',
					'value' => 'caption-slideup',
					'new' => array(
						array ( 'id' => 'hover_effect_preset', 'value' => 'fg-custom' ),
						array ( 'id' => 'hover_effect_caption_visibility', 'value' => 'fg-caption-hover' ),
						array ( 'id' => 'hover_effect_transition', 'value' => 'fg-hover-slide-up' ),
					)
				),

				array(
					'id' => 'caption_style',
					'value' => 'caption-fall',
					'new' => array(
						array ( 'id' => 'hover_effect_preset', 'value' => 'fg-custom' ),
						array ( 'id' => 'hover_effect_caption_visibility', 'value' => 'fg-caption-hover' ),
						array ( 'id' => 'hover_effect_transition', 'value' => 'fg-hover-slide-down' ),
					)
				),
				array(
					'id' => 'caption_style',
					'value' => 'caption-fade',
					'new' => array(
						array ( 'id' => 'hover_effect_preset', 'value' => 'fg-custom' ),
						array ( 'id' => 'hover_effect_caption_visibility', 'value' => 'fg-caption-hover' ),
						array ( 'id' => 'hover_effect_transition', 'value' => 'fg-hover-fade' ),
					)
				),
				array(
					'id' => 'caption_style',
					'value' => 'caption-push',
					'new' => array(
						array ( 'id' => 'hover_effect_preset', 'value' => 'fg-custom' ),
						array ( 'id' => 'hover_effect_caption_visibility', 'value' => 'fg-caption-hover' ),
						array ( 'id' => 'hover_effect_transition', 'value' => 'fg-hover-push' ),
					)
				),
				array(
					'id' => 'caption_style',
					'value' => 'caption-scale',
					'new' => array(
						array ( 'id' => 'hover_effect_preset', 'value' => 'fg-custom' ),
						array ( 'id' => 'hover_effect_caption_visibility', 'value' => 'fg-caption-hover' ),
						array ( 'id' => 'hover_effect_transition', 'value' => 'fg-hover-slide-left' ),
					)
				),

				//single thumbnail gallery
				array(
					'id' => 'position',
					'value' => 'position-block',
					'new' => array(
						array ( 'id' => 'position', 'value' => 'fg-center' ),
					)
				),
				array(
					'id' => 'position',
					'value' => 'position-float-left',
					'new' => array(
						array ( 'id' => 'position', 'value' => 'fg-left' ),
					)
				),
				array(
					'id' => 'position',
					'value' => 'position-float-right',
					'new' => array(
						array ( 'id' => 'position', 'value' => 'fg-right' ),
					)
				),

			);

			$old_settings = get_post_meta( $foogallery->ID, FOOGALLERY_META_SETTINGS_OLD, true );

			if ( empty( $old_settings ) ) {
			    return $old_settings;
            }

			//start with the old settings
			$new_settings = $old_settings;

			//upgrade all template settings
			foreach ( foogallery_gallery_templates() as $template ) {

				foreach ( $mappings as $mapping ) {

					$settings_key = "{$template['slug']}_{$mapping['id']}";

					//check if the settings exists
					if ( array_key_exists( $settings_key, $old_settings ) ) {

						$old_settings_value = $old_settings[$settings_key];

						if ( $mapping['value'] === $old_settings_value ) {
							//we have found a match!

                            $add_settings = true;

                            //check if we have any preconditions
                            if ( isset( $mapping['preconditions'] ) ) {
                                $add_settings = false;
                                foreach ($mapping['preconditions'] as $precondition) {
                                    $precondition_setting_key = "{$template['slug']}_{$precondition['id']}";
                                    $precondition_setting_value = $precondition['value'];

                                    if ( array_key_exists( $precondition_setting_key, $old_settings ) &&
                                        $precondition_setting_value === $old_settings[$precondition_setting_key] ) {
                                        //we have found a precondition match
                                        $add_settings = true;
                                    }
                                }
                            }

                            if ( $add_settings ) {
                                foreach ($mapping['new'] as $setting_to_create) {
                                    $new_setting_key = "{$template['slug']}_{$setting_to_create['id']}";
                                    $new_setting_value = $setting_to_create['value'];
                                    $new_settings[$new_setting_key] = $new_setting_value;
                                }
                            }
						}
					}
				}
			}

			//template specific settings overrides
			if ( 'image-viewer' === $foogallery->gallery_template ) {
				$new_settings['image-viewer_border_size'] = 'fg-border-thin';
				$new_settings['image-viewer_drop_shadow'] = 'fg-shadow-outline';
				$new_settings['image-viewer_rounded_corners'] = '';
				$new_settings['image-viewer_inner_shadow'] = '';
                $new_settings['image-viewer_hover_effect_caption_visibility'] = 'fg-caption-always';
			}

			if ( 'justified' === $foogallery->gallery_template ) {
				$new_settings['justified_theme'] = 'fg-light';
				$new_settings['justified_border_size'] = '';
				$new_settings['justified_drop_shadow'] = '';
				$new_settings['justified_rounded_corners'] = '';
				$new_settings['justified_inner_shadow'] = '';
                $new_settings['justified_hover_effect_preset'] = 'fg-custom';
                $new_settings['justified_hover_effect_icon'] = '';
                $new_settings['justified_hover_effect_caption_visibility'] = '';
			}

			if ( 'masonry' === $foogallery->gallery_template ) {
				$new_settings['masonry_theme'] = 'fg-light';
				$new_settings['masonry_border_size'] = '';
				$new_settings['masonry_drop_shadow'] = '';
				$new_settings['masonry_rounded_corners'] = '';
				$new_settings['masonry_inner_shadow'] = '';
                $new_settings['masonry_hover_effect_preset'] = 'fg-custom';
                $new_settings['masonry_hover_effect_icon'] = '';
                $new_settings['masonry_hover_effect_caption_visibility'] = '';
			}

            if ( 'simple_portfolio' === $foogallery->gallery_template ) {
                $new_settings['simple_portfolio_theme'] = 'fg-light';
                $new_settings['simple_portfolio_border_size'] = '';
                $new_settings['simple_portfolio_drop_shadow'] = '';
                $new_settings['simple_portfolio_rounded_corners'] = '';
                $new_settings['simple_portfolio_inner_shadow'] = '';
                $new_settings['simple_portfolio_hover_effect_preset'] = '';
            }

			return $new_settings;
		}
	}
}