<?php

if (!defined('ABSPATH')) {
	exit; // Exit if accessed directly.
}

class Adv_Vis_Ele_Library {
	public $library_info, $library_version, $library_needs_update, $installed_elements;
	
	public static $dynamic_settings_delimiter_start = '{{';
	public static $dynamic_settings_delimiter_end = '}}';
	
	public static $dynamic_settings = [
		'Post/Page' => [
			'POST_ID' => 'Post ID',
			'POST_TITLE' => 'Post title',
			'POST_CATEGORY' => 'Post category',
			'POST_FEATURED_IMAGE' => 'Post Featured image',
			'POST_EXCERPT' => 'Post excerpt',
			'POST_DATE' => 'Post date',
			'POST_TIME' => 'Post time',
			'POST_COMMENTS_NUMBER' => 'Number of comments'
		],
		'Archive' => [
			'ARCHIVE_ID' => 'Archive ID',
			'ARCHIVE_TITLE' => 'Archive title'
		],
		'Author' => [
			'AUTHOR_ID' => 'Author ID',
			'AUTHOR_FIRST_NAME' => 'Author first name',
			'AUTHOR_LAST_NAME' => 'Author last name',
			'AUTHOR_DISPLAY_NAME' => 'Author display name',
			'AUTHOR_EMAIL' => 'Author e-mail'
		]
	];
	
	public function __construct() {
		$this->library_info = array_filter(get_option('adv_vis_ele_library_info', []));
		$this->library_needs_update = false;
		$this->installed_elements = get_option('adv_vis_ele_installed_elements', []);
		$this->library_version = get_option('adv_vis_ele_library_version', '1.0.0');
		
		// WooCommerce dynamic settings array
		if (class_exists('woocommerce')) {
			Adv_Vis_Ele_Library::$dynamic_settings['WooCommerce'] = [
				'WOO_PRODUCT_SKU' => 'Product SKU',
				'WOO_PRODUCT_IMAGE' => 'Product image',
				'WOO_PRODUCT_SHORT_DESCRIPTION' => 'Product short description',
				'WOO_PRODUCT_LONG_DESCRIPTION' => 'Product long description',
				'WOO_PRODUCT_REGULAR_PRICE' => 'Product regular price',
				'WOO_PRODUCT_SALE_PRICE' => 'Product sale price',
				'WOO_CURRENCY_SYMBOL' => 'WooCommerce currency symbol',
				'WOO_PRODUCT_STOCK_STATUS' => 'Product stock status',
				'WOO_PRODUCT_STOCK_QUANTITY' => 'Product stock quantity',
				'WOO_PRODUCT_SHIPPING_CLASS' => 'Product shipping class',
				'WOO_ADD_TO_CART_TEXT' => 'WooCommerce "Add to cart" text'
			];
		}
		
		// Make meta field last array value
		Adv_Vis_Ele_Library::$dynamic_settings['Meta/ACF'] = [
			'META_FIELD' => 'Meta or ACF field'
		];
	}
	
	/**
	 * Fetches the remote elements library info
	 */
	public function fetch_remote_library_info($update_local_info = true) {
		$data = ['request' => 'library-info', 'dev' => isset($_GET['adv-vis-ele-library-dev'])];
		$response = wp_remote_post(ADV_VIS_ELE_REMOTE_URL, ['body' => $data, 'timeout' => 60]);
		$output = wp_remote_retrieve_body($response);
		
		if (!empty($output)) {
			$decoded = json_decode($output);
			
			if (!empty($decoded)) {
				if ($decoded->response === 'success') {
					if (version_compare($decoded->data->version, $this->library_version) === 1 || empty(get_option('adv_vis_ele_library_version'))) {
						$this->library_needs_update = true;
					} else {
						$this->library_needs_update = false;
					}
					
					if (Adv_Vis_Ele_Admin::is_dev()) {
						$this->library_needs_update = false;
					}
					
					$dev_library = false;
					if (isset($_GET['adv-vis-ele-library-action']) && sanitize_text_field($_GET['adv-vis-ele-library-action']) === 'update') {
						if (isset($_GET['adv-vis-ele-library-dev']) || isset($_GET['adv-vis-ele-library-reset'])) {
							$this->library_needs_update = true;
							
							if (isset($_GET['adv-vis-ele-library-dev'])) {
								$dev_library = true;
							}
						}
					}
					
					if ($update_local_info === false) {
						return $this->library_needs_update;
					} else {
						if ($this->library_needs_update) {
							if (!isset($decoded->data->elements_json)) {
								return [];
							}
							
							$library_difference = array_diff(array_column($decoded->data->elements_json, 'id'), array_column($this->library_info, 'id'));
							
							$this->library_info = $decoded->data->elements_json;
							$this->library_version = $decoded->data->version;
							
							if ($dev_library) {
								update_option('adv_vis_ele_library_version', 'DEV');
							} else {
								update_option('adv_vis_ele_library_version', $decoded->data->version);
							}
							
							update_option('adv_vis_ele_library_info', $this->library_info);
							
							if (!empty($library_difference)) {
								update_option('adv_vis_ele_library_info_new', $library_difference);
							}
						}
					}
					
					return $this->library_info;
				} else {
					return [];
				}
			} else {
				return [];
			}
		} else {
			return [];
		}
	}
	
	/**
	 * Get local library info
	 */
	public function get_local_library_info($limit = false, $page = false) {
		$library_ordering = get_user_meta(get_current_user_id(), 'adv_vis_ele_library_ordering', true);
		
		if (empty($library_ordering)) {
			$library_ordering = 'asc';
			
			add_user_meta(get_current_user_id(), 'adv_vis_ele_library_ordering', $library_ordering);
		}
		
		array_multisort(array_column($this->library_info, 'name'), SORT_NATURAL, $this->library_info);
		
		if ($library_ordering === 'desc') {
			$library_info = array_reverse($this->library_info);
		} else {
			$library_info = $this->library_info;
		}
		
		if (is_int($limit) && is_int($page)) {
			return array_slice($library_info, ($page * $limit) - $limit, $limit);
		}
		
		return $library_info;
	}
	
	/**
	 * Get library changelog (remote)
	 */
	public function fetch_library_changelog() {
		$data = ['request' => 'library-changelog'];
		
		$response = wp_remote_post(ADV_VIS_ELE_REMOTE_URL, ['body' => $data, 'timeout' => 60]);
		$output = wp_remote_retrieve_body($response);
		
		if (!empty($output)) {
			$decoded = json_decode($output);
			
			if (!empty($decoded)) {
				if ($decoded->response === 'success') {
					return $decoded->data;
				} else {
					return '';
				}
			} else {
				return '';
			}
		} else {
			return '';
		}
	}
	
	/**
	 * Get element info from local library
	 */
	public function get_element($element_id) {
		$info = $this->get_local_library_info();
		
		$key = array_search($element_id, array_column($info, 'id'));
		
		if ($key === false) {
			return false;
		}
		
		if (is_object($info[$key])) {
			return $info[$key];
		}
		
		return false;
	}
	
	/**
	 * Get element options from local library
	 */
	public function get_element_setting($element_id, $setting_name) {
		$element = $this->get_element($element_id);
		
		if ($element) {
			$key = array_search($setting_name, array_column($element->settings, 'id'));
			
			if ($key !== false) {
				return $element->settings[$key];
			}
		}
		
		return false;
	}
	
	/**
	 * Install element
	 */
	public function install_element($element_id) {
		if (wp_doing_ajax()) {
			$nonce_verified = isset($_POST['nonce']) && wp_verify_nonce($_POST['nonce'], 'ave_ajax');
			
			if (!$nonce_verified) {
				wp_send_json_error(['code' => '010']);
			}
			
			$element_id = sanitize_text_field($_POST['element-id']);
			$editing_shortcode = isset($_POST['editing-shortcode']);
		} else {
			$editing_shortcode = false;
		}
		
		if ($element_id === false || empty($element_id)) {
			if (wp_doing_ajax()) {
				wp_send_json_error(['code' => '004']);
			} else {
				return false;
			}
		}
		
		$library = new Adv_Vis_Ele_Library();
		$element = $library->get_element($element_id);
		
		if ($element->license !== 'free' && !wpave_fs()->can_use_premium_code()) {
			if (wp_doing_ajax()) {
				wp_send_json_error(['message' => __('You don\'t have a valid license to install this element.', 'wp-ave')]);
			} else {
				return false;
			}
		}
		
		$license_id = !empty(wpave_fs()->_get_license()) ? wpave_fs()->_get_license()->id : '';
		$install_id = !empty(wpave_fs()->get_site()) ? wpave_fs()->get_site()->id : '';
		$site_private_key = !empty(wpave_fs()->get_site()) ? wpave_fs()->get_site()->secret_key : '';
		
		$nonce = date('Y-m-d');
		$pk_hash = hash('sha512', $site_private_key . '|' . $nonce);
		$authentication_string = base64_encode($pk_hash . '|' . $nonce);
		
		$data = [
			'request' => 'install',
			'element-id' => $element_id,
			'license_id' => $license_id,
			'install_id' => $install_id,
			'site_private_key' => $site_private_key,
			'authentication_string' => $authentication_string,
			'dev' => isset($_REQUEST['adv-vis-ele-library-dev'])
		];
		
		$response = wp_remote_post(ADV_VIS_ELE_REMOTE_URL, ['body' => $data, 'headers' => '', 'timeout' => 60]);
		$output = wp_remote_retrieve_body($response);
		
		if (empty($output)) {
			if (wp_doing_ajax()) {
				wp_send_json_error(['code' => '005', 'message' => __('Element could not be downloaded. If you are on a development server - try enabling localhost mode on Settings page.', 'wp-ave')]);
			} else {
				return false;
			}
		}
		
		$element_install_path = ADV_VIS_ELE_ELEMENTS_DIR . DIRECTORY_SEPARATOR . $element_id;
		
		Adv_Vis_Ele_Helpers::wipe_dir($element_install_path);
		
		$zipFile = $element_install_path . '.zip';
		
		global $wp_filesystem;
		
		if(empty($wp_filesystem)) {
			require_once ABSPATH . 'wp-admin/includes/file.php';
			
			WP_Filesystem();
		}
		
		$wp_filesystem->put_contents($zipFile, $output);
		
		$extracted = unzip_file($zipFile, $element_install_path);
		
		@unlink($zipFile);
		
		if (!is_wp_error($extracted)) {
			$index_path = $element_install_path . '/index.php';
			
			if (!is_file($index_path)) {
				// create index.php file to prevent directory reading
				$index_file = fopen($index_path, 'w');
				fwrite($index_file, '<?php //silence is golden');
				fclose($index_file);
			}
			
			if (!empty($this->get_installed_elements())) {
				$this->installed_elements[] = $element_id;
			} else {
				$this->installed_elements = [$element_id];
			}
			
			update_option('adv_vis_ele_installed_elements', $this->installed_elements);
			
			if (wp_doing_ajax()) {
				if ($editing_shortcode === true) {
					$success_message = __('Element was successfully installed. Please refresh or update the page.', 'wp-ave');
				} else {
					$success_message = __('Element was successfully installed.', 'wp-ave');
				}
				
				wp_send_json_success(['message' => __($success_message, 'wp-ave')]);
			} else {
				return true;
			}
		} else {
			if (wp_doing_ajax()) {
				wp_send_json_error(['code' => '007', 'message' => __('Element could not be installed. Make sure you have the right folder permissions. Please refresh and try again.', 'wp-ave')]);
			} else {
				return false;
			}
		}
		
		return false;
	}
	
	/**
	 * Delete element
	 */
	public function uninstall_element($element_id) {
		if (wp_doing_ajax()) {
			$nonce_verified = isset($_POST['nonce']) && wp_verify_nonce($_POST['nonce'], 'ave_ajax');
			
			if (!$nonce_verified) {
				wp_send_json_error(['code' => '010']);
			}
			
			$element_id = sanitize_text_field($_POST['element-id']);
		}
		
		if ($element_id === false || empty($element_id)) {
			if (wp_doing_ajax()) {
				wp_send_json_error(['code' => '004']);
			} else {
				return false;
			}
		}
		
		$element_folder = ADV_VIS_ELE_ELEMENTS_DIR . DIRECTORY_SEPARATOR . $element_id;
		
		Adv_Vis_Ele_Helpers::wipe_dir($element_folder);
		
		$installed_elements = $this->get_installed_elements();
		
		if (($key = array_search($element_id, $installed_elements)) !== false) {
			unset($installed_elements[$key]);
			
			$this->installed_elements = $installed_elements;
			
			update_option('adv_vis_ele_installed_elements', $this->installed_elements);
			
			if (wp_doing_ajax()) {
				wp_send_json_success(['message' => __('Element was successfully deleted.', 'wp-ave')]);
			} else {
				return true;
			}
		} else {
			if (wp_doing_ajax()) {
				wp_send_json_error(['code' => '006', 'message' => __('Element could not be deleted. Please refresh and try again.', 'wp-ave')]);
			} else {
				return false;
			}
		}
		
		return false;
	}
	
	/**
	 * Get installed elements
	 */
	public function get_installed_elements() {
		return empty($this->installed_elements) ? [] : $this->installed_elements;
	}
	
	/**
	 * Check if element is installed
	 */
	public function is_element_installed($element_id) {
		return in_array($element_id, $this->get_installed_elements());
	}
	
	/**
	 * Get elements HTML
	 */
	public function get_element_html($element) {
		ob_start();
		?>
		<div class="adv-vis-ele-library-element <?php echo $element->new_element === true ? 'adv-vis-ele-library-element-new' : ''; ?>" data-id="<?php echo esc_attr($element->id); ?>" data-license="<?php echo esc_attr($element->license); ?>">
			<h6><?php echo esc_attr($element->name); ?></h6>
			<div class="adv-vis-ele-library-video">
				<span class="adv-vis-ele-video-label">
					<?php _e('Preview', 'wp-ave'); ?>
					<i class="fas fa-eye"></i>
				</span>
				<span class="adv-vis-ele-span-fullscreen" id="adv-vis-ele-span-fullscreen-<?php echo esc_attr($element->video_id); ?>">
					<?php _e('Fullscreen', 'wp-ave'); ?>
					<i class="fas fa-window-restore"></i>
				</span>
				<?php
				$web_preview_url = ADV_VIS_ELE_PLUGIN_WEBSITE . '/element-preview/' . $element->id . '/';
				?>
				<span class="adv-vis-ele-span-web-preview" id="adv-vis-ele-span-web-preview-<?php echo esc_attr($element->video_id); ?>" data-web-preview-url="<?php echo esc_url($web_preview_url); ?>">
					<?php _e('Web preview', 'wp-ave'); ?>
					<i class="fas fa-code"></i>
				</span>
				<?php
				
				$settings_string = '';
				if (!empty($element->settings) && is_array($element->settings)) {
					foreach ($element->settings as $setting) {
						$settings_string .= '<div class="adv-vis-ele-settings-popup-single-setting">';
						
						$mobile_string = '';
						if (isset($setting->mobile) && $setting->mobile === true) {
							$mobile_string .= ' ' . __('(mobile)', 'wp-ave');
						}
						
						if ($element->license !== 'free') {
							$settings_string .= '<span>' . esc_attr($setting->name . $mobile_string) . '</span>' . '<span class="adv-vis-ele-settings-popup-single-setting-pro">PRO</span>';
						} else {
							$settings_string .= '<span>' . esc_attr($setting->name . $mobile_string) . '</span>' . '<span class"' . ($setting->license === 'free' ? '' : 'adv-vis-ele-settings-popup-single-setting-pro') . '">' . ($setting->license === 'free' ? 'Free' : 'PRO') . '</span>';
						}
						
						$settings_string .= '</div>';
					}
				}
				
				if (empty($settings_string)) {
					$settings_string = __('No options listed.', 'wp-ave');
				}
				
				?>
				<span class="adv-vis-ele-span-settings adv-vis-ele-abbr">
					<?php _e('Options', 'adv-vis-ele'); ?>
					<i class="fas fa-cogs"></i>
					<span class="adv-vis-ele-abbr-tippy-content"><?php echo wp_kses_post($settings_string); ?></span>
				</span>
				<div class="adv-vis-ele-library-video-wrap">
					<?php
					if (get_option('adv_vis_ele_auto_play_library_videos') == 'on') { ?>
						<div id="adv-vis-ele-video-id-<?php echo esc_attr($element->video_id); ?>" class="adv-vis-ele-api-video adv-vis-ele-api-video-not-started" data-src="<?php echo esc_attr($element->video_id); ?>"></div>
					<?php } else { ?>
						<img class="adv-vis-ele-api-thumbnail" src="https://img.youtube.com/vi/<?php echo esc_attr($element->video_id); ?>/maxresdefault.jpg" alt="<?php echo esc_attr($element->name); ?>">
					<?php }
					
					if ($element->license != 'free') { ?>
						<div class="adv-vis-ele-pro-ribbon <?php echo wpave_fs()->can_use_premium_code() ? 'adv-vis-ele-pro-ribbon-inverted' : ''; ?>">
							<span><?php echo wpave_fs()->can_use_premium_code() ? 'PRO' : '<a target="_blank" href="' . esc_url(ADV_VIS_ELE_PLUGIN_WEBSITE_SHOP) . '">PRO</a>'; ?></span>
						</div>
					<?php } ?>
				</div>
			</div>
			<?php
			
			if ($element->license !== 'free' && !wpave_fs()->can_use_premium_code() && !$this->is_element_installed($element->id)) { ?>
				<button onclick="window.open('<?php echo admin_url('admin.php?page=adv-vis-ele-pricing'); ?>');" class="adv-vis-ele-btn">
					<?php _e('Buy PRO', 'adv-vis-ele'); ?>
					<i class="fas fa-cart-arrow-down"></i>
				</button>
			<?php } else { ?>
				<button class="adv-vis-ele-btn adv-vis-ele-install-btn <?php echo $this->is_element_installed($element->id) ? 'adv-vis-ele-use-btn-disabled' : ''; ?>">
					<?php _e('Install', 'adv-vis-ele'); ?>
					<i class="fas fa-download"></i>
				</button>
				<?php
				
				if (Adv_Vis_Ele_Admin::is_dev()) { ?>
					<button class="adv-vis-ele-btn adv-vis-ele-install-btn adv-vis-ele-install-dev-btn <?php echo $this->is_element_installed($element->id) ? 'adv-vis-ele-use-btn-disabled' : ''; ?>">
						<?php _e('DEV Install', 'adv-vis-ele'); ?>
						<i class="fas fa-download"></i>
					</button>
				<?php } ?>
			<?php } ?>
			<button class="adv-vis-ele-btn adv-vis-ele-uninstall-btn <?php echo $this->is_element_installed($element->id) ? '' : 'adv-vis-ele-use-btn-disabled'; ?>">
				<i class="fas fa-trash"></i>
			</button>
			<button class="adv-vis-ele-btn adv-vis-ele-use-btn <?php echo $this->is_element_installed($element->id) ? '' : 'adv-vis-ele-use-btn-disabled'; ?>">
				<?php _e('Create', 'adv-vis-ele'); ?>
				<i class="fas fa-arrow-right"></i>
			</button>
		</div>
		<?php
		
		return ob_get_clean();
	}
	
	/**
	 * Load more elements (AJAX)
	 */
	public function ajax_load_more_elements() {
		$page = (int)$_POST['page'];
		$limit = (int)$_POST['limit'];
		$search = sanitize_text_field($_POST['search']);
		
		if (!empty($search)) {
			$elements = $this->get_local_library_info();
		} else {
			$elements = $this->get_local_library_info($limit, $page);
		}
		
		$filtered_elements = [];
		if (!empty($search)) {
			foreach ($elements as $element) {
				if (stristr($element->name, $search) !== false || stristr($element->id, $search) !== false) {
					$filtered_elements[] = $element;
				}
			}
			
			$elements = array_slice($filtered_elements, ($page * $limit) - $limit, $limit);
			
			if (empty($elements)) {
				if ($page > 1) {
					echo '';
				} else {
					echo 'No search results.';
				}
				
				wp_die();
			}
		}
		
		$new_elements = get_option('adv_vis_ele_library_info_new', []);
		
		$html = '';
		foreach ($elements as $element) {
			$element->new_element = in_array($element->id, $new_elements);
			
			$html .= $this->get_element_html($element);
		}
		
		echo wp_kses_post($html);
		
		wp_die();
	}
	
	/**
	 * Render setting field
	 */
	public function render_setting_field($setting) {
		ob_start();
		
		echo '<label for="' . esc_attr($setting->id) . '">' . esc_html($setting->name);
		
		if ($setting->type === 'select') {
			if (isset($setting->multiple) && $setting->multiple) {
				echo '<span class="adv-vis-ele-abbr adv-vis-ele-abbr-select-multiple" data-title="' . __('Hold CTRL/CMD keyboard key to select multiple options.') . '">?</span>';
			}
		}
		
		if ($setting->type === 'content') {
			echo '<span class="adv-vis-ele-abbr adv-vis-ele-abbr-content" data-title="' . __('You should explicitly declare styling for elements in this field as it can be easily overwritten by your active theme or plugin CSS. You can also use shortcodes in this field.', 'adv-vis-ele') . '">?</span>';
		}
		
		if (!empty($setting->instructions)) {
			echo '<span class="adv-vis-ele-abbr adv-vis-ele-abbr-instructions" data-title="' . __($setting->instructions, 'adv-vis-ele') . '">?</span>';
		} else if ($setting->type === 'video') {
			echo '<span class="adv-vis-ele-abbr adv-vis-ele-abbr-instructions" data-title="' . __('Choose your video carefully, if not optimized - videos can slow page load and cause bad user experience. YouTube and Vimeo videos are supported.', 'adv-vis-ele') . '">?</span>';
		}
		
		if (isset($setting->mobile) && $setting->mobile === true) {
			echo '<i class="far fa-mobile-alt adv-vis-ele-abbr" data-title="' . __('This option is intended for mobile devices.') . '"></i>';
		}
		
		echo '</label>';
		
		if ($setting->type === 'color') {
			$color_format = $setting->format === 'rgba' ? ' data-alpha-enabled="true"' : '';
			
			echo '<input id="' . esc_attr($setting->id) . '" name="adv-vis-ele-editor-settings[' . esc_attr($setting->id) . ']" type="text" value="' . esc_attr($setting->value) . '" data-default-color="' . esc_attr($setting->default) . '" class="color-field" data-format="' . esc_attr($setting->format) . '"' . esc_attr($color_format) . '/>';
		} else if ($setting->type === 'text') {
			echo '<input id="' . esc_attr($setting->id) . '" name="adv-vis-ele-editor-settings[' . esc_attr($setting->id) . ']" type="text" value="' . esc_attr($setting->value) . '"/>';
		} else if ($setting->type === 'number') {
			$min = '';
			$max = '';
			
			if (isset($setting->min)) {
				$min = 'min="' . esc_attr($setting->min) . '"';
			}
			if (isset($setting->max)) {
				$max = 'max="' . esc_attr($setting->max) . '"';
			}
			
			echo '<input id="' . esc_attr($setting->id) . '" name="adv-vis-ele-editor-settings[' . esc_attr($setting->id) . ']" type="number" value="' . esc_attr($setting->value) . '" ' . $min . ' ' . $max . ' step="1"/>';
		} else if ($setting->type === 'float') {
			$min = '';
			$max = '';
			
			if (isset($setting->min)) {
				$min = 'min="' . esc_attr($setting->min) . '"';
			}
			if (isset($setting->max)) {
				$max = 'max="' . esc_attr($setting->max) . '"';
			}
			
			$step = '0.1';
			if (isset($setting->step)) {
				$step = $setting->step;
			}
			
			echo '<input id="' . esc_attr($setting->id) . '" name="adv-vis-ele-editor-settings[' . esc_attr($setting->id) . ']" type="number" step="' . esc_attr($step) . '" value="' . esc_attr($setting->value) . '" ' . $min . ' ' . $max . '/>';
		} else if ($setting->type === 'select') {
			if (isset($setting->multiple) && $setting->multiple) {
				$size = Adv_Vis_Ele_Helpers::clamp(count($setting->options), 1, 10);
				
				echo '<select id="' . esc_attr($setting->id) . '" name="adv-vis-ele-editor-settings[' . esc_attr($setting->id) . '][]" multiple size="' . esc_attr($size) . '">';
				
				foreach ($setting->options as $option) {
					if (isset($option->label)) {
						$label = $option->label;
					} else {
						$label = ucfirst($option->value);
					}
					
					$selected_flag = false;
					if (is_array($setting->value)) {
						if (in_array($option->value, $setting->value)) {
							$selected_flag = true;
						}
					} else {
						if ($option->value == $setting->value) {
							$selected_flag = true;
						}
					}
					
					echo '<option value="' . esc_attr($option->value) . '" ' . (selected($selected_flag)) . '>' . esc_attr($label) . '</option>';
				}
				
				echo '</select>';
			} else {
				echo '<select id="' . esc_attr($setting->id) . '" name="adv-vis-ele-editor-settings[' . esc_attr($setting->id) . ']">';
				
				foreach ($setting->options as $option) {
					if (isset($option->label)) {
						$label = $option->label;
					} else {
						$label = ucfirst($option->value);
					}
					
					$selected_flag = false;
					if ($option->value == $setting->value) {
						$selected_flag = true;
					}
					
					echo '<option value="' . esc_attr($option->value) . '" ' . (selected($selected_flag)) . '>' . esc_html($label) . '</option>';
				}
				
				echo '</select>';
			}
		} else if ($setting->type === 'boolean') {
			echo '<label class="adv-vis-ele-switch-input" for="' . esc_attr($setting->id) . '">';
			
			echo '<input id="' . esc_attr($setting->id) . '" name="adv-vis-ele-editor-settings[' . esc_attr($setting->id) . ']" type="checkbox" ' . checked($setting->value, true, false) . '/>';
			echo '<span class="adv-vis-ele-slider-input"></span>';
			
			echo '</label>';
			
			// this is needed to submit FALSE value
			echo '<input id="' . esc_attr($setting->id) . '-bool" name="adv-vis-ele-editor-settings-bool[' . esc_attr($setting->id) . ']" type="hidden" value="0"/>';
		} else if ($setting->type === 'content') {
			wp_editor(wp_kses_post(wpautop($setting->value)), esc_attr($setting->id), ['wpautop' => false, 'textarea_name' => 'adv-vis-ele-editor-settings[' . esc_attr($setting->id) . ']', 'editor_height' => 150]);
		} else if ($setting->type === 'image') {
			echo '<input type="text" name="adv-vis-ele-editor-settings[' . esc_attr($setting->id) . ']" id="' . esc_attr($setting->id) . '" value="' . esc_attr($setting->value) . '"/>';
			echo '<a href="#" class="button " data-editor="' . esc_attr($setting->id) . '">' . __('Choose Image', 'adv-vis-ele') . '</a>';
		} else if ($setting->type === 'video') {
			echo '<input type="text" name="adv-vis-ele-editor-settings[' . esc_attr($setting->id) . ']" id="' . esc_attr($setting->id) . '" value="' . esc_attr($setting->value) . '"/>';
			echo '<a href="#" class="button " data-editor="' . esc_attr($setting->id) . '">' . __('Choose Video', 'adv-vis-ele') . '</a>';
		}
		
		// dynamic post values
		if ($setting->type === 'text' || $setting->type === 'content' || $setting->type === 'image') {
			echo '<a class="adv-vis-ele-setting-dynamic-add adv-vis-ele-abbr" data-title="' . __('Insert a dynamic value that will be fetched on-the-fly, such as post or archive ID, title, category, author name, a WooCommerce product image etc. This is a PRO feature.', 'adv-vis-ele') . '" data-type="' . esc_attr($setting->type) . '"><i class="fas fa-plus"></i></a>';
		}
		
		return ob_get_clean();
	}
	
	/**
	 * Update library (remote)
	 */
	public function update_library($do_not_redirect = false) {
		$update_array = $this->fetch_remote_library_info(true);
		$remote_ids = array_column($update_array, 'id');
		
		if (!empty($update_array)) {
			$elements = $this->get_installed_elements();
			
			foreach ($elements as $element_id) {
				if (array_search($element_id, $remote_ids) === false) {
					unset($elements[array_search($element_id, $elements)]);
					
					update_option('adv_vis_ele_installed_elements', $elements);
				}
				
				$uninstalled = $this->uninstall_element($element_id);
				
				if ($uninstalled) {
					$this->install_element($element_id);
				}
			}
		} else {
			// error, couldn't fetch json.info file, notify developer
			if (!$do_not_redirect) {
				wp_redirect(admin_url('admin.php?page=adv-vis-ele&adv-vis-ele-library-action=update-failed'));
				
				die();
			}
		}
		
		if (isset($_GET['adv-vis-ele-library-dev']) || isset($_GET['adv-vis-ele-library-reset'])) {
			if (!$do_not_redirect) {
				wp_redirect($_SERVER['HTTP_REFERER'] . '&adv-vis-ele-library-action=update-finished-dev');
				
				die();
			}
		} else {
			if (!$do_not_redirect) {
				wp_redirect(admin_url('admin.php?page=adv-vis-ele&adv-vis-ele-library-action=update-finished'));
				
				die();
			}
		}
	}
	
	/**
	 * Save library ordering (AJAX)
	 */
	public function ajax_save_ordering() {
		$nonce_verified = isset($_POST['nonce']) && wp_verify_nonce($_POST['nonce'], 'ave_ajax');
		
		if (!$nonce_verified) {
			wp_send_json_error(['code' => '010']);
		}
		
		$ordering = sanitize_text_field($_POST['ordering']);
		
		update_user_meta(get_current_user_id(), 'adv_vis_ele_library_ordering', $ordering);
		
		wp_send_json_success();
	}
	
	/**
	 * Full import (AJAX)
	 */
	public function ajax_full_import() {
		$nonce_verified = isset($_POST['nonce']) && wp_verify_nonce($_POST['nonce'], 'ave_ajax');
		
		if (!$nonce_verified) {
			wp_send_json_error(['code' => '010']);
		}
		
		$current_user = wp_get_current_user();
		$author = $current_user->ID;
		
		$settings = [];
		
		foreach ($_POST['settings'] as $key => $setting) {
			$key = sanitize_text_field($key);
			
			if (is_array($setting)) {
				$settings[$key] = array_map('wp_kses_post', $setting);
			} else {
				$settings[$key] = wp_kses_post($setting);
			}
			
			if ($settings[$key] === 'true') {
				$settings[$key] = 'on';
			}
		}
		
		if (!empty($settings)) {
			$element_id = $settings['adv-vis-ele-element_id'];
			
			unset($settings['adv-vis-ele-element_id']); // remove the Element ID because we want only settings
			
			$post = [
				'post_title' => 'Imported Element (' . $element_id . ')',
				'post_status' => 'draft',
				'post_type' => 'adv-vis-element',
				'post_author' => $author
			];
			
			$new_post_id = wp_insert_post($post);
			
			if (is_int($new_post_id) && $new_post_id > 0) {
				add_post_meta($new_post_id, 'adv-vis-ele-element_id', $element_id);
				
				$saving = $this->get_saving_settings($settings, $element_id);
				
				Adv_Vis_Ele_Admin::save_element_meta_settings($saving, $new_post_id);
				
				$redirection_url = admin_url() . 'post.php?post=' . $new_post_id . '&action=edit';
				
				wp_send_json_success(['redirection_url' => $redirection_url]);
			}
		}
		
		wp_send_json_error();
	}
	
	/**
	 * Get Element options for saving
	 */
	public function get_saving_settings($settings, $element_id) {
		$saving = [];
		
		foreach ($settings as $setting_name => $setting_value) {
			$setting = $this->get_element_setting($element_id, $setting_name);
			
			if ($setting) {
				if ($setting->license !== 'free') {
					if (wpave_fs()->can_use_premium_code()) {
						$saving[$setting_name] = Adv_Vis_Ele_Admin::filter_setting($setting, $setting_value);
					} else {
						$saving[$setting_name] = $setting->default;
					}
				} else {
					$saving[$setting_name] = Adv_Vis_Ele_Admin::filter_setting($setting, $setting_value);
				}
			}
		}
		
		return $saving;
	}
	
	/**
	 * Quick save preview (AJAX)
	 */
	public function ajax_quick_save() {
		$nonce_verified = isset($_POST['nonce']) && wp_verify_nonce($_POST['nonce'], 'ave_ajax');
		
		if (!$nonce_verified) {
			wp_send_json_error(['code' => '010']);
		}
		
		if (!isset($_POST['id'])) {
			return;
		}
		
		$post_id = (int)$_POST['id'];
		
		$element_id = sanitize_text_field($_POST['element-id']);
		
		$settings = [];
		
		foreach ($_POST['settings'] as $key => $setting) {
			$key = sanitize_text_field($key);
			
			if (is_array($setting)) {
				$settings[$key] = array_map('wp_kses_post', $setting);
			} else {
				$settings[$key] = wp_kses_post($setting);
			}
		}
		
		$meta_settings = Adv_Vis_Ele_Admin::get_element_meta_settings($post_id);
		
		if (!empty($meta_settings)) {
			foreach ($settings as $name => $setting) {
				if (in_array($name, array_keys($meta_settings))) {
					$meta_settings[$name] = $setting;
				}
			}
		} else {
			$meta_settings = $settings;
		}
		
		$saving = $this->get_saving_settings($meta_settings, $element_id);
		
		Adv_Vis_Ele_Admin::save_element_meta_settings($saving, $post_id);
		
		$saving['adv-vis-ele-element_id'] = $element_id;
		
		wp_send_json_success(['export' => json_encode($saving)]);
	}
}