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<?php
/**
 * Addons Page
 *
 * @package  WooCommerce/Admin
 * @version  2.5.0
 */

if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

/**
 * WC_Admin_Addons Class.
 */
class WC_Admin_Addons {

	/**
	 * Get featured for the addons screen
	 *
	 * @return array of objects
	 */
	public static function get_featured() {
		$featured = get_transient( 'wc_addons_featured' );
		if ( false === $featured ) {
			$raw_featured = wp_safe_remote_get( 'https://d3t0oesq8995hv.cloudfront.net/add-ons/featured-v2.json', array( 'user-agent' => 'WooCommerce Addons Page' ) );
			if ( ! is_wp_error( $raw_featured ) ) {
				$featured = json_decode( wp_remote_retrieve_body( $raw_featured ) );
				if ( $featured ) {
					set_transient( 'wc_addons_featured', $featured, WEEK_IN_SECONDS );
				}
			}
		}

		if ( is_object( $featured ) ) {
			self::output_featured_sections( $featured->sections );
			return $featured;
		}
	}

	/**
	 * Build url parameter string
	 *
	 * @param  string $category Addon (sub) category.
	 * @param  string $term     Search terms.
	 * @param  string $country  Store country.
	 *
	 * @return string url parameter string
	 */
	public static function build_parameter_string( $category, $term, $country ) {

		$paramters = array(
			'category' => $category,
			'term'     => $term,
			'country'  => $country,
		);

		return '?' . http_build_query( $paramters );
	}

	/**
	 * Call API to get extensions
	 *
	 * @param  string $category Addon (sub) category.
	 * @param  string $term     Search terms.
	 * @param  string $country  Store country.
	 *
	 * @return array of extensions
	 */
	public static function get_extension_data( $category, $term, $country ) {
		$parameters     = self::build_parameter_string( $category, $term, $country );
		$raw_extensions = wp_remote_get(
			'https://woocommerce.com/wp-json/wccom-extensions/1.0/search' . $parameters
		);
		if ( ! is_wp_error( $raw_extensions ) ) {
			$addons = json_decode( wp_remote_retrieve_body( $raw_extensions ) )->products;
		}
		return $addons;
	}

	/**
	 * Get sections for the addons screen
	 *
	 * @return array of objects
	 */
	public static function get_sections() {
		$addon_sections = get_transient( 'wc_addons_sections' );
		if ( false === ( $addon_sections ) ) {
			$raw_sections = wp_safe_remote_get(
				'https://woocommerce.com/wp-json/wccom-extensions/1.0/categories'
			);
			if ( ! is_wp_error( $raw_sections ) ) {
				$addon_sections = json_decode( wp_remote_retrieve_body( $raw_sections ) );
				if ( $addon_sections ) {
					set_transient( 'wc_addons_sections', $addon_sections, WEEK_IN_SECONDS );
				}
			}
		}
		return apply_filters( 'woocommerce_addons_sections', $addon_sections );
	}

	/**
	 * Get section for the addons screen.
	 *
	 * @param  string $section_id Required section ID.
	 *
	 * @return object|bool
	 */
	public static function get_section( $section_id ) {
		$sections = self::get_sections();
		if ( isset( $sections[ $section_id ] ) ) {
			return $sections[ $section_id ];
		}
		return false;
	}

	/**
	 * Get section content for the addons screen.
	 *
	 * @param  string $section_id Required section ID.
	 *
	 * @return array
	 */
	public static function get_section_data( $section_id ) {
		$section      = self::get_section( $section_id );
		$section_data = '';

		if ( ! empty( $section->endpoint ) ) {
			$section_data = get_transient( 'wc_addons_section_' . $section_id );
			if ( false === $section_data ) {
				$raw_section = wp_safe_remote_get( esc_url_raw( $section->endpoint ), array( 'user-agent' => 'WooCommerce Addons Page' ) );

				if ( ! is_wp_error( $raw_section ) ) {
					$section_data = json_decode( wp_remote_retrieve_body( $raw_section ) );

					if ( ! empty( $section_data->products ) ) {
						set_transient( 'wc_addons_section_' . $section_id, $section_data, WEEK_IN_SECONDS );
					}
				}
			}
		}

		return apply_filters( 'woocommerce_addons_section_data', $section_data->products, $section_id );
	}

	/**
	 * Handles the outputting of a contextually aware Storefront link (points to child themes if Storefront is already active).
	 */
	public static function output_storefront_button() {
		$template   = get_option( 'template' );
		$stylesheet = get_option( 'stylesheet' );

		if ( 'storefront' === $template ) {
			if ( 'storefront' === $stylesheet ) {
				$url         = 'https://woocommerce.com/product-category/themes/storefront-child-theme-themes/';
				$text        = __( 'Need a fresh look? Try Storefront child themes', 'woocommerce' );
				$utm_content = 'nostorefrontchildtheme';
			} else {
				$url         = 'https://woocommerce.com/product-category/themes/storefront-child-theme-themes/';
				$text        = __( 'View more Storefront child themes', 'woocommerce' );
				$utm_content = 'hasstorefrontchildtheme';
			}
		} else {
			$url         = 'https://woocommerce.com/storefront/';
			$text        = __( 'Need a theme? Try Storefront', 'woocommerce' );
			$utm_content = 'nostorefront';
		}

		$url = add_query_arg(
			array(
				'utm_source'   => 'addons',
				'utm_medium'   => 'product',
				'utm_campaign' => 'woocommerceplugin',
				'utm_content'  => $utm_content,
			),
			$url
		);

		echo '<a href="' . esc_url( $url ) . '" class="add-new-h2">' . esc_html( $text ) . '</a>' . "\n";
	}

	/**
	 * Handles the outputting of a banner block.
	 *
	 * @param object $block Banner data.
	 */
	public static function output_banner_block( $block ) {
		?>
		<div class="addons-banner-block">
			<h1><?php echo esc_html( $block->title ); ?></h1>
			<p><?php echo esc_html( $block->description ); ?></p>
			<div class="addons-banner-block-items">
				<?php foreach ( $block->items as $item ) : ?>
					<?php if ( self::show_extension( $item ) ) : ?>
						<div class="addons-banner-block-item">
							<div class="addons-banner-block-item-icon">
								<img class="addons-img" src="<?php echo esc_url( $item->image ); ?>" />
							</div>
							<div class="addons-banner-block-item-content">
								<h3><?php echo esc_html( $item->title ); ?></h3>
								<p><?php echo esc_html( $item->description ); ?></p>
								<?php
									self::output_button(
										$item->href,
										$item->button,
										'addons-button-solid',
										$item->plugin
									);
								?>
							</div>
						</div>
					<?php endif; ?>
				<?php endforeach; ?>
			</div>
		</div>
		<?php
	}

	/**
	 * Handles the outputting of a column.
	 *
	 * @param object $block Column data.
	 */
	public static function output_column( $block ) {
		if ( isset( $block->container ) && 'column_container_start' === $block->container ) {
			?>
			<div class="addons-column-section">
			<?php
		}
		if ( 'column_start' === $block->module ) {
			?>
			<div class="addons-column">
			<?php
		} else {
			?>
			</div>
			<?php
		}
		if ( isset( $block->container ) && 'column_container_end' === $block->container ) {
			?>
			</div>
			<?php
		}
	}

	/**
	 * Handles the outputting of a column block.
	 *
	 * @param object $block Column block data.
	 */
	public static function output_column_block( $block ) {
		?>
		<div class="addons-column-block">
			<h1><?php echo esc_html( $block->title ); ?></h1>
			<p><?php echo esc_html( $block->description ); ?></p>
			<?php foreach ( $block->items as $item ) : ?>
				<?php if ( self::show_extension( $item ) ) : ?>
					<div class="addons-column-block-item">
						<div class="addons-column-block-item-icon">
							<img class="addons-img" src="<?php echo esc_url( $item->image ); ?>" />
						</div>
						<div class="addons-column-block-item-content">
							<h2><?php echo esc_html( $item->title ); ?></h2>
							<?php
								self::output_button(
									$item->href,
									$item->button,
									'addons-button-solid',
									$item->plugin
								);
							?>
							<p><?php echo esc_html( $item->description ); ?></p>
						</div>
					</div>
				<?php endif; ?>
			<?php endforeach; ?>
		</div>

		<?php
	}

	/**
	 * Handles the outputting of a small light block.
	 *
	 * @param object $block Block data.
	 */
	public static function output_small_light_block( $block ) {
		?>
		<div class="addons-small-light-block">
			<img class="addons-img" src="<?php echo esc_url( $block->image ); ?>" />
			<div class="addons-small-light-block-content">
				<h1><?php echo esc_html( $block->title ); ?></h1>
				<p><?php echo esc_html( $block->description ); ?></p>
				<div class="addons-small-light-block-buttons">
					<?php foreach ( $block->buttons as $button ) : ?>
						<?php
							self::output_button(
								$button->href,
								$button->text,
								'addons-button-solid'
							);
						?>
					<?php endforeach; ?>
				</div>
			</div>
		</div>
		<?php
	}

	/**
	 * Handles the outputting of a small dark block.
	 *
	 * @param object $block Block data.
	 */
	public static function output_small_dark_block( $block ) {
		?>
		<div class="addons-small-dark-block">
			<h1><?php echo esc_html( $block->title ); ?></h1>
			<p><?php echo esc_html( $block->description ); ?></p>
			<div class="addons-small-dark-items">
				<?php foreach ( $block->items as $item ) : ?>
					<div class="addons-small-dark-item">
						<?php if ( ! empty( $item->image ) ) : ?>
							<div class="addons-small-dark-item-icon">
								<img class="addons-img" src="<?php echo esc_url( $item->image ); ?>" />
							</div>
						<?php endif; ?>
						<?php
							self::output_button(
								$item->href,
								$item->button,
								'addons-button-outline-white'
							);
						?>
					</div>
				<?php endforeach; ?>
			</div>
		</div>
		<?php
	}

	/**
	 * Handles the outputting of the WooCommerce Services banner block.
	 *
	 * @param object $block Block data.
	 */
	public static function output_wcs_banner_block( $block = array() ) {
		$is_active = is_plugin_active( 'woocommerce-services/woocommerce-services.php' );
		$location  = wc_get_base_location();

		if (
			! in_array( $location['country'], array( 'US', 'CA' ), true ) ||
			$is_active ||
			! current_user_can( 'install_plugins' ) ||
			! current_user_can( 'activate_plugins' )
		) {
			return;
		}

		$button_url = wp_nonce_url(
			add_query_arg(
				array(
					'install-addon' => 'woocommerce-services',
				)
			),
			'install-addon_woocommerce-services'
		);

		$defaults = array(
			'image'       => WC()->plugin_url() . '/assets/images/wcs-extensions-banner-3x.png',
			'image_alt'   => __( 'WooCommerce Services', 'woocommerce' ),
			'title'       => __( 'Buy discounted shipping labels — then print them from your dashboard.', 'woocommerce' ),
			'description' => __( 'Integrate your store with USPS to buy discounted shipping labels, and print them directly from your WooCommerce dashboard. Powered by WooCommerce Services.', 'woocommerce' ),
			'button'      => __( 'Free - Install now', 'woocommerce' ),
			'href'        => $button_url,
			'logos'       => array(),
		);

		switch ( $location['country'] ) {
			case 'CA':
				$local_defaults = array(
					'image'       => WC()->plugin_url() . '/assets/images/wcs-truck-banner-3x.png',
					'title'       => __( 'Show Canada Post shipping rates', 'woocommerce' ),
					'description' => __( 'Display live rates from Canada Post at checkout to make shipping a breeze. Powered by WooCommerce Services.', 'woocommerce' ),
					'logos'       => array_merge(
						$defaults['logos'],
						array(
							array(
								'link' => WC()->plugin_url() . '/assets/images/wcs-canada-post-logo.jpg',
								'alt'  => 'Canada Post logo',
							),
						)
					),
				);
				break;
			case 'US':
				$local_defaults = array(
					'logos' => array_merge(
						$defaults['logos'],
						array(
							array(
								'link' => WC()->plugin_url() . '/assets/images/wcs-usps-logo.png',
								'alt'  => 'USPS logo',
							),
						)
					),
				);
				break;
			default:
				$local_defaults = array();
		}

		$block_data = array_merge( $defaults, $local_defaults, $block );
		?>
		<div class="addons-wcs-banner-block">
			<div class="addons-wcs-banner-block-image">
				<img
					class="addons-img"
					src="<?php echo esc_url( $block_data['image'] ); ?>"
					alt="<?php echo esc_attr( $block_data['image_alt'] ); ?>"
				/>
			</div>
			<div class="addons-wcs-banner-block-content">
				<h1><?php echo esc_html( $block_data['title'] ); ?></h1>
				<p><?php echo esc_html( $block_data['description'] ); ?></p>
				<ul>
					<?php foreach ( $block_data['logos'] as $logo ) : ?>
						<li>
							<img
								alt="<?php echo esc_attr( $logo['alt'] ); ?>"
								class="wcs-service-logo"
								src="<?php echo esc_url( $logo['link'] ); ?>"
							>
						</li>
					<?php endforeach; ?>
				</ul>
				<?php
					self::output_button(
						$block_data['href'],
						$block_data['button'],
						'addons-button-outline-green'
					);
				?>
			</div>
		</div>
		<?php
	}

	/**
	 * Handles the outputting of featured sections
	 *
	 * @param array $sections Section data.
	 */
	public static function output_featured_sections( $sections ) {
		foreach ( $sections as $section ) {
			switch ( $section->module ) {
				case 'banner_block':
					self::output_banner_block( $section );
					break;
				case 'column_start':
					self::output_column( $section );
					break;
				case 'column_end':
					self::output_column( $section );
					break;
				case 'column_block':
					self::output_column_block( $section );
					break;
				case 'small_light_block':
					self::output_small_light_block( $section );
					break;
				case 'small_dark_block':
					self::output_small_dark_block( $section );
					break;
				case 'wcs_banner_block':
					self::output_wcs_banner_block( (array) $section );
					break;
			}
		}
	}

	/**
	 * Returns in-app-purchase URL params.
	 */
	public static function get_in_app_purchase_url_params() {
		// Get url (from path onward) for the current page,
		// so WCCOM "back" link returns user to where they were.
		$back_admin_path = add_query_arg( array() );
		return array(
			'wccom-site'          => site_url(),
			'wccom-back'          => rawurlencode( $back_admin_path ),
			'wccom-woo-version'   => WC_VERSION,
			'wccom-connect-nonce' => wp_create_nonce( 'connect' ),
		);
	}

	/**
	 * Add in-app-purchase URL params to link.
	 *
	 * Adds various url parameters to a url to support a streamlined
	 * flow for obtaining and setting up WooCommerce extensons.
	 *
	 * @param string $url    Destination URL.
	 */
	public static function add_in_app_purchase_url_params( $url ) {
		return add_query_arg(
			self::get_in_app_purchase_url_params(),
			$url
		);
	}

	/**
	 * Outputs a button.
	 *
	 * @param string $url    Destination URL.
	 * @param string $text   Button label text.
	 * @param string $style  Button style class.
	 * @param string $plugin The plugin the button is promoting.
	 */
	public static function output_button( $url, $text, $style, $plugin = '' ) {
		$style = __( 'Free', 'woocommerce' ) === $text ? 'addons-button-outline-green' : $style;
		$style = is_plugin_active( $plugin ) ? 'addons-button-installed' : $style;
		$text  = is_plugin_active( $plugin ) ? __( 'Installed', 'woocommerce' ) : $text;
		$url   = self::add_in_app_purchase_url_params( $url );
		?>
		<a
			class="addons-button <?php echo esc_attr( $style ); ?>"
			href="<?php echo esc_url( $url ); ?>">
			<?php echo esc_html( $text ); ?>
		</a>
		<?php
	}


	/**
	 * Handles output of the addons page in admin.
	 */
	public static function output() {
		$section = isset( $_GET['section'] ) ? sanitize_text_field( wp_unslash( $_GET['section'] ) ) : '_featured';
		$search = isset( $_GET['search'] ) ? sanitize_text_field( wp_unslash( $_GET['search'] ) ) : '';

		if ( isset( $_GET['section'] ) && 'helper' === $_GET['section'] ) {
			do_action( 'woocommerce_helper_output' );
			return;
		}

		if ( isset( $_GET['install-addon'] ) && 'woocommerce-services' === $_GET['install-addon'] ) {
			self::install_woocommerce_services_addon();
		}

		$sections        = self::get_sections();
		$theme           = wp_get_theme();
		$current_section = isset( $_GET['section'] ) ? $section : '_featured';
		$addons          = array();

		if ( '_featured' !== $current_section ) {
			$category = $section ? $section : null;
			$term     = $search ? $search : null;
			$country  = WC()->countries->get_base_country();
			$addons   = self::get_extension_data( $category, $term, $country );
		}

		/**
		 * Addon page view.
		 *
		 * @uses $addons
		 * @uses $sections
		 * @uses $theme
		 * @uses $current_section
		 */
		include_once dirname( __FILE__ ) . '/views/html-admin-page-addons.php';
	}

	/**
	 * Install WooCommerce Services from Extensions screens.
	 */
	public static function install_woocommerce_services_addon() {
		check_admin_referer( 'install-addon_woocommerce-services' );

		$services_plugin_id = 'woocommerce-services';
		$services_plugin    = array(
			'name'      => __( 'WooCommerce Services', 'woocommerce' ),
			'repo-slug' => 'woocommerce-services',
		);

		WC_Install::background_installer( $services_plugin_id, $services_plugin );

		wp_safe_redirect( remove_query_arg( array( 'install-addon', '_wpnonce' ) ) );
		exit;
	}

	/**
	 * Should an extension be shown on the featured page.
	 *
	 * @param object $item Item data.
	 * @return boolean
	 */
	public static function show_extension( $item ) {
		$location = WC()->countries->get_base_country();
		if ( isset( $item->geowhitelist ) && ! in_array( $location, $item->geowhitelist, true ) ) {
			return false;
		}

		if ( isset( $item->geoblacklist ) && in_array( $location, $item->geoblacklist, true ) ) {
			return false;
		}

		if ( is_plugin_active( $item->plugin ) ) {
			return false;
		}

		return true;
	}
}