<?php

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

class Adv_Vis_Ele_Public {
	private $plugin_name, $version, $library;
	
	public function __construct($plugin_name, $version) {
		$this->plugin_name = $plugin_name;
		$this->version = $version;
		$this->library = new Adv_Vis_Ele_Library();
		
		$this->add_shortcodes();
	}
	
	/**
	 * Register the stylesheets for the public-facing side of the site.
	 */
	public function enqueue_styles() {
		if (!wp_style_is($this->plugin_name . '-public')) {
			wp_enqueue_style($this->plugin_name . '-public', plugin_dir_url(__FILE__) . 'css/adv-vis-ele-public.css', [], $this->version, 'all');
		}
		
		if (empty($elements)) {
			$elements = $this->library->get_installed_elements();
		}
		
		foreach ($elements as $element_id) {
			if (!$this->library->is_element_installed($element_id)) {
				continue;
			}
			
			$element = $this->library->get_element($element_id);
			
			$element_path = content_url('/wp-ave-elements/' . $element_id . '/');
			
			if (!empty($element->files)) {
				foreach ($element->files as $file) {
					if ($file->type === 'css') {
						$dependencies = [];
						if (!empty($file->wp_dependencies)) {
							$dependencies = $file->wp_dependencies;
						}
						
						$script_slug = 'ave-' . $element_id . '-' . $file->slug;
						
						if (!wp_style_is($script_slug)) {
							wp_enqueue_style($script_slug, $element_path . $file->file, $dependencies, $this->library->library_version, 'all');
						}
					}
				}
			}
		}
	}
	
	/**
	 * Register the JavaScript for the public-facing side of the site.
	 */
	public function enqueue_scripts() {
		if (!wp_script_is($this->plugin_name . '-public')) {
			wp_enqueue_script($this->plugin_name . '-public', plugin_dir_url(__FILE__) . 'js/adv-vis-ele-public.js', ['jquery'], $this->version, false);
		}
	}
	
	/**
	 * Add shortcodes for rendering element shortcodes
	 *
	 */
	public function add_shortcodes() {
		if (!shortcode_exists('ave-element')) {
			add_shortcode('ave-element', [$this, 'output_shortcode']);
		}
	}
	
	/**
	 * Enqueue all element scripts
	 */
	public function enqueue_element_scripts($elements = []) {
		$js_dependencies = [];
		
		if (empty($elements)) {
			$elements = $this->library->get_installed_elements();
		}
		
		foreach ($elements as $element_id) {
			if (!$this->library->is_element_installed($element_id)) {
				continue;
			}
			
			$element = $this->library->get_element($element_id);
			
			$element_path = content_url('/wp-ave-elements/' . $element_id . '/');
			
			if (!empty($element->files)) {
				foreach ($element->files as $file) {
					if ($file->type === 'js') {
						$dependencies = [];
						if (!empty($file->wp_dependencies)) {
							$dependencies = $file->wp_dependencies;
						}
						
						$script_slug = 'ave-' . $element_id . '-' . $file->slug;
						
						if (!wp_script_is($script_slug)) {
							wp_enqueue_script($script_slug, $element_path . $file->file, $dependencies, $this->library->library_version, true);
							
							$js_dependencies[] = $script_slug;
						}
					}
				}
			}
		}
		
		return $js_dependencies;
	}
	
	/**
	 * Main shortcode for displaying elements
	 */
	public function output_shortcode($atts) {
		if (empty($atts['id'])) {
			return '';
		}
		
		$post_id = (int)$atts['id']; // for use in shortcode.php
		
		if ($post_id === false) {
			return '';
		}
		
		$do_not_render = apply_filters('ave_filter_render_flag', $post_id);
		
		if ($do_not_render === false) {
			return '';
		}
		
		$element_post = get_post($post_id);
		
		if (is_null($element_post)) {
			return '';
		}
		
		if ($element_post->post_type !== 'adv-vis-element') {
			return '';
		}
		
		if (!current_user_can('administrator') && $element_post->post_status !== 'publish') {
			return '';
		}
		
		if (!empty($element_post->post_password)) {
			return '';
		}
		
		if ($element_post->post_status === 'trash') {
			return '';
		}
		
		$disable_on_mobile = get_post_meta($post_id, 'adv-vis-ele-disable_on_mobile', true);
		
		if ($disable_on_mobile && wp_is_mobile()) {
			return '';
		}
		
		$element_id = get_post_meta($post_id, 'adv-vis-ele-element_id', true);
		$element_id = sanitize_text_field($element_id);
		
		if (empty($element_id) && !current_user_can('administrator')) {
			return '';
		}
		
		// if it's the first time editing element, so it's not saved yet - construct the preview from default settings
		if ($element_post->post_status === 'auto-draft') {
			if (isset($_GET['element-id'])) {
				$element_id = sanitize_text_field($_GET['element-id']);
			} else {
				if (!current_user_can('administrator')) {
					return '';
				}
			}
		}
		
		if (!$this->library->is_element_installed($element_id)) {
			if (current_user_can('administrator')) {
				return '<div class="adv-vis-ele-this-element-needs-install"><a href="' . admin_url('admin.php?page=adv-vis-ele') . '">' . __('This element will not render - it is not installed, click here to go to library to install it. This message is visible to administrators only.') . '</a></div>';
			} else {
				return '';
			}
		}
		
		$element = $this->library->get_element($element_id);
		
		if (!current_user_can('administrator') && $element->license !== 'free' && !wpave_fs()->can_use_premium_code()) {
			return '';
		}
		
		// get element settings and cast them to object - they are used in the include file
		$meta_settings = Adv_Vis_Ele_Admin::get_element_meta_settings($post_id);
		
		// insert dynamic post settings, do not do it if in quick preview
		foreach ($element->settings as $element_setting) {
			if (empty($meta_settings[$element_setting->id])) {
				continue;
			}
			
			if ($element_setting->type !== 'text' && $element_setting->type !== 'content' && $element_setting->type !== 'image') {
				continue;
			}
			
			if (strpos($meta_settings[$element_setting->id], Adv_Vis_Ele_Library::$dynamic_settings_delimiter_start) !== false) {
				preg_match_all('/' . Adv_Vis_Ele_Library::$dynamic_settings_delimiter_start . '(\S*?)' . Adv_Vis_Ele_Library::$dynamic_settings_delimiter_end . '/', $meta_settings[$element_setting->id], $dynamic_settings_found);
				
				if (!empty($dynamic_settings_found[0]) && !empty($dynamic_settings_found[1])) {
					foreach ($dynamic_settings_found[0] as $k => $dynamic_setting) {
						if (!isset($_GET['ave-preview-on-front'])) {
							$replacement_setting = '';
						} else {
							$replacement_setting = $dynamic_settings_found[1][$k];
							
							$meta_settings[$element_setting->id] = str_replace($dynamic_setting, $replacement_setting, $meta_settings[$element_setting->id]);
							
							continue;
						}
						
						if (!wpave_fs()->can_use_premium_code()) {
							$replacement_setting = '';
							
							$meta_settings[$element_setting->id] = str_replace($dynamic_setting, $replacement_setting, $meta_settings[$element_setting->id]);
							
							continue;
						}
						
						if ($dynamic_settings_found[1][$k] === 'POST_ID') {
							$replacement_setting = get_the_ID();
						} else if ($dynamic_settings_found[1][$k] === 'POST_TITLE') {
							$replacement_setting = get_the_title();
						} else if ($dynamic_settings_found[1][$k] === 'POST_CATEGORY') {
							$replacement_setting = get_the_category_list(', ');
						} else if ($dynamic_settings_found[1][$k] === 'POST_FEATURED_IMAGE') {
							if (has_post_thumbnail()) {
								$replacement_setting = wp_get_attachment_image_url(get_post_thumbnail_id(), 'full');
							}
						} else if ($dynamic_settings_found[1][$k] === 'POST_EXCERPT') {
							$replacement_setting = get_the_excerpt();
						} else if ($dynamic_settings_found[1][$k] === 'POST_DATE') {
							$replacement_setting = get_the_date();
						} else if ($dynamic_settings_found[1][$k] === 'POST_TIME') {
							$replacement_setting = get_the_time();
						} else if ($dynamic_settings_found[1][$k] === 'POST_COMMENTS_NUMBER') {
							$replacement_setting = get_comments_number();
						} else if ($dynamic_settings_found[1][$k] === 'ARCHIVE_ID') {
							$queried_object = get_queried_object();
							
							if (is_object($queried_object)) {
								if ($queried_object instanceof WP_Post) {
									$replacement_setting = $queried_object->ID;
								} else if ($queried_object instanceof WP_Term) {
									$replacement_setting = $queried_object->term_id;
								}
							}
						} else if ($dynamic_settings_found[1][$k] === 'ARCHIVE_TITLE') {
							$replacement_setting = get_the_archive_title();
						} else if ($dynamic_settings_found[1][$k] === 'AUTHOR_ID') {
							$replacement_setting = get_the_author_meta('ID');
						} else if ($dynamic_settings_found[1][$k] === 'AUTHOR_FIRST_NAME') {
							$replacement_setting = get_the_author_meta('first_name');
						} else if ($dynamic_settings_found[1][$k] === 'AUTHOR_LAST_NAME') {
							$replacement_setting = get_the_author_meta('last_name');
						} else if ($dynamic_settings_found[1][$k] === 'AUTHOR_DISPLAY_NAME') {
							$replacement_setting = get_the_author_meta('display_name');
						} else if ($dynamic_settings_found[1][$k] === 'AUTHOR_EMAIL') {
							$replacement_setting = get_the_author_meta('email');
						} else if (substr($dynamic_settings_found[1][$k], 0, 4) === 'META') {
							$key = str_replace(
								[
									Adv_Vis_Ele_Library::$dynamic_settings_delimiter_start,
									Adv_Vis_Ele_Library::$dynamic_settings_delimiter_end,
									'META_FIELD_'
								], '', $dynamic_settings_found[1][$k]);
							
							$meta_setting = get_post_meta(get_the_ID(), $key, true);
							
							$replacement_setting = $meta_setting ? $meta_setting : '';
						}
						
						// WooCommerce dynamic settings
						if (class_exists('woocommerce')) {
							global $product;
							
							if ($product instanceof WC_Product) {
								if ($dynamic_settings_found[1][$k] === 'WOO_PRODUCT_SKU') {
									$replacement_setting = $product->get_sku();
								} else if ($dynamic_settings_found[1][$k] === 'WOO_PRODUCT_IMAGE') {
									$replacement_setting = wp_get_attachment_image_url(get_post_thumbnail_id($product->get_id()), 'full');
								} else if ($dynamic_settings_found[1][$k] === 'WOO_PRODUCT_SHORT_DESCRIPTION') {
									$replacement_setting = $product->get_short_description();
								} else if ($dynamic_settings_found[1][$k] === 'WOO_PRODUCT_LONG_DESCRIPTION') {
									$replacement_setting = $product->get_description();
								} else if ($dynamic_settings_found[1][$k] === 'WOO_PRODUCT_REGULAR_PRICE') {
									$replacement_setting = $product->get_regular_price();
								} else if ($dynamic_settings_found[1][$k] === 'WOO_PRODUCT_SALE_PRICE') {
									$replacement_setting = $product->get_sale_price();
								} else if ($dynamic_settings_found[1][$k] === 'WOO_CURRENCY_SYMBOL') {
									$replacement_setting = get_woocommerce_currency_symbol();
								} else if ($dynamic_settings_found[1][$k] === 'WOO_PRODUCT_STOCK_STATUS') {
									$replacement_setting = $product->get_stock_status();
								} else if ($dynamic_settings_found[1][$k] === 'WOO_PRODUCT_STOCK_QUANTITY') {
									$replacement_setting = $product->get_stock_quantity();
								} else if ($dynamic_settings_found[1][$k] === 'WOO_PRODUCT_SHIPPING_CLASS') {
									$replacement_setting = $product->get_shipping_class();
								} else if ($dynamic_settings_found[1][$k] === 'WOO_ADD_TO_CART_TEXT') {
									$replacement_setting = $product->add_to_cart_text();
								}
							}
						}
						
						if (is_string($replacement_setting) || is_int($replacement_setting)) {
							$meta_settings[$element_setting->id] = str_replace($dynamic_setting, $replacement_setting, $meta_settings[$element_setting->id]);
						}
					}
				}
			}
		}
		
		$settings_clean = [];
		
		// reserved variables
		$settings_clean['post_id'] = absint($post_id);
		$settings_clean['element_id'] = $element_id;
		$settings_clean['element_path'] = ADV_VIS_ELE_ELEMENTS_DIR . DIRECTORY_SEPARATOR . $element_id;
		
		$settings_clean['mobile_breakpoint'] = absint(get_option('adv_vis_ele_global_mobile_breakpoint', ADV_VIS_ELE_GLOBAL_MOBILE_BREAKPOINT));
		
		$meta_mobile_breakpoint = absint(get_post_meta($post_id, 'adv-vis-ele-mobile_breakpoint', true));
		
		if (!empty($meta_mobile_breakpoint)) {
			$filtered_mobile_breakpoint = absint($meta_mobile_breakpoint);
			
			if (!empty($filtered_mobile_breakpoint)) {
				$settings_clean['mobile_breakpoint'] = $filtered_mobile_breakpoint;
			}
		}
		
		foreach ($element->settings as $element_setting) {
			if ($element_setting->type === 'boolean') {
				if (isset($meta_settings[$element_setting->id]) && is_bool($meta_settings[$element_setting->id])) {
					$settings_clean[$element_setting->id] = $meta_settings[$element_setting->id];
				} else {
					if (isset($element_setting->default) && is_bool($element_setting->default)) {
						$settings_clean[$element_setting->id] = $element_setting->default;
					}
				}
			} else {
				if (isset($meta_settings[$element_setting->id])) {
					$settings_clean[$element_setting->id] = $meta_settings[$element_setting->id];
				} else {
					if (!empty($element_setting->default)) {
						$settings_clean[$element_setting->id] = $element_setting->default;
					} else {
						$settings_clean[$element_setting->id] = ''; // populate this so we don't get "undefined index errors" etc.
					}
				}
			}
			
			// escape all of the settings
			if ($element_setting->type === 'text') {
				$settings_clean[$element_setting->id] = esc_html($settings_clean[$element_setting->id]);
			} else if ($element_setting->type === 'color') {
				$settings_clean[$element_setting->id] = esc_attr($settings_clean[$element_setting->id]);
			} else if ($element_setting->type === 'content') {
				$settings_clean[$element_setting->id] = wp_kses_post(nl2br($settings_clean[$element_setting->id]));
			} else if ($element_setting->type === 'number') {
				$settings_clean[$element_setting->id] = (int)$settings_clean[$element_setting->id];
			} else if ($element_setting->type === 'float') {
				$settings_clean[$element_setting->id] = (float)$settings_clean[$element_setting->id];
			} else if ($element_setting->type === 'image' || $element_setting->type === 'video') {
				$settings_clean[$element_setting->id] = esc_url($settings_clean[$element_setting->id]);
			} else if ($element_setting->type === 'select') {
				if (is_array($settings_clean[$element_setting->id])) {
					foreach ($settings_clean[$element_setting->id] as $setting) {
						if (!in_array($setting, array_column($element_setting->options, 'value'))) {
							$settings_clean[$element_setting->id] = '';
						}
					}
				}
			} else if ($element_setting->type === 'boolean') {
				$settings_clean[$element_setting->id] = (bool)$settings_clean[$element_setting->id];
			}
		}
		
		// enqueue all element scripts and get back all their slugs to act as dependencies for the main script.js file
		$js_element_dependencies = $this->enqueue_element_scripts($element);
		
		$element_path = content_url('/wp-ave-elements/' . $element_id . '/');
		
		if (wpave_fs()->can_use_premium_code()) {
			$settings_clean = apply_filters('ave_filter_element_settings', $settings_clean, $post_id);
		}
		
		$encoded_element_settings = json_encode($settings_clean);
		
		if ($encoded_element_settings) {
			$script_code = 'if(typeof ave_element_settings == "undefined") {var ave_element_settings = {}}; ave_element_settings["' . (int)$post_id . '"] = ' . $encoded_element_settings . ';';
		} else {
			if (current_user_can('administrator')) {
				return __('There was a problem with parsing/encoding Element settings. This message is visible to administrators only.');
			}
			
			return '';
		}
		
		if (file_exists(ADV_VIS_ELE_ELEMENTS_DIR . DIRECTORY_SEPARATOR . $element_id . '/script.js') && !wp_script_is('ave-' . $element_id)) {
			$merged_js_dependencies = array_merge($element->js_dependencies, $js_element_dependencies);
			
			wp_enqueue_script('ave-' . $element_id, $element_path . 'script.js', $merged_js_dependencies, $this->version, true);
		}
		
		if (isset($script_code) && wp_script_is('ave-' . $element_id)) {
			wp_add_inline_script('ave-' . $element_id, $script_code, 'before');
		}
		
		$shortcode_file = ADV_VIS_ELE_ELEMENTS_DIR . DIRECTORY_SEPARATOR . $element->id . DIRECTORY_SEPARATOR . 'shortcode.php';
		
		if (!file_exists(realpath($shortcode_file))) {
			if (current_user_can('administrator')) {
				return '<div class="adv-vis-ele-this-element-needs-install"><a href="' . admin_url('admin.php?page=adv-vis-ele') . '">' . __('This element will not render - critical element files missing, click here to go to library to re-install it. This message is visible to administrators only.') . '</a></div>';
			}
			
			return '';
		}
		
		do_action('ave_action_before_element');
		
		// begin shortcode output
		ob_start();
		
		$output = '';
		
		$custom_css = get_post_meta($post_id, 'adv-vis-ele-custom_css', true);
		if (!empty($custom_css)) {
			$custom_css_slug = 'ave-custom-inline-css-' . (int)$post_id;
			
			wp_register_style($custom_css_slug, false);
			wp_enqueue_style($custom_css_slug);
			wp_add_inline_style($custom_css_slug, strip_tags($custom_css));
		}
		
		$container_styles_out = '';
		$container_styles_width = get_post_meta($post_id, 'adv-vis-ele-container_styles', true);
		$container_styles_vertical = get_post_meta($post_id, 'adv-vis-ele-container_styles_vertical', true);
		
		if (!empty($container_styles_width)) {
			if (substr($container_styles_width, 0, 4) === 'flex' || $container_styles_width === 'center') {
				$container_styles_out .= 'display: flex; justify-content: ' . $container_styles_width . ';';
				
				if (!empty($container_styles_vertical)) {
					$container_styles_out .= ' align-items: ' . $container_styles_vertical . ';';
				}
			} else {
				$container_styles_out .= 'display: ' . $container_styles_width . ';';
			}
		}
		
		$output .= '<div id="adv-vis-ele-shortcode-' . esc_attr($element_id) . '-' . (int)$post_id . '" data-post-id="' . (int)$post_id . '" data-mobile-breakpoint="' . esc_attr($settings_clean['mobile_breakpoint']) . '" class="adv-vis-ele-shortcode-render-container" style="' . esc_attr($container_styles_out) . '">';
		$output .= '<div class="adv-vis-ele-shortcode-render-container-inner">';
		
		global $pagenow;
		
		if (get_option('adv_vis_ele_disable_admin_commands_frontend') != 'on' && current_user_can('administrator') && ($pagenow != 'post.php' && $pagenow != 'post-new.php')) {
			$output .= '<div class="adv-vis-ele-shortcode-render-admin-commands">';
			
			if (!isset($_GET['ave-preview-on-front'])) {
				$output .= '<a class="adv-vis-ele-btn" href="' . esc_url(get_edit_post_link($post_id)) . '">' . __('Edit Element', 'wp-ave') . '</a>';
			}
			
			$output .= '</div>'; // .adv-vis-ele-shortcode-render-admin-commands
			
			if ($element_post->post_status !== 'publish' && !isset($_GET['ave-preview-on-front'])) {
				$output .= '<span class="adv-vis-ele-shortcode-draft-notice">' . __('This render is only visible to admins. Publish this element to show it to all site visitors.', 'wp-ave') . '</span>';
			}
			
			if ($element->license !== 'free' && !wpave_fs()->can_use_premium_code()) {
				$output .= '<span class="adv-vis-ele-shortcode-license-notice">' . __('This render is only visible to admins. This element requires PRO license in order for it to render for all site visitors.', 'wp-ave') . '</span>';
			}
		}
		
		$settings = $settings_clean;
		unset($settings_clean);
		
		include $shortcode_file;
		
		$output .= ob_get_clean();
		
		$output .= '</div>'; // .adv-vis-ele-shortcode-render-container-inner
		$output .= '</div>'; // .adv-vis-ele-shortcode-render-container
		
		ob_start();
		
		do_action('ave_action_after_element');
		
		$after = ob_get_clean();
		
		return $output . $after;
	}
}