<?php
/**
 * Question to the people who use ProdTabs: "Is ProdTabs useful to you?". It shows on the screens of ProdTabs only,
 * two weeks after the first visit with ten products having tabs of their own, or right after a successful import
 * from Custom Product Tabs. "Yes" leads to the review form of WordPress.org; "Not really" offers the support form
 * first, and the review form stays one click away: everyone can leave a review, nothing is offered in exchange
 * (guideline 9 of the directory), and unhappy users are not kept away from it.
 *
 * @package Prodtabs
 */

namespace Prodtabs;

defined( 'ABSPATH' ) || exit;

/**
 * Satisfaction question and review request.
 */
final class Review_Ask {

	/** Review form of the directory. */
	const URL = 'https://wordpress.org/support/plugin/prodtabs/reviews/#new-post';

	/** Time of the first visit to the admin with ProdTabs active. */
	const SINCE = 'prodtabs_since';

	/** User meta: "done", or the time until which the question is put off. */
	const META = 'prodtabs_review';

	/** User meta: the answer to the question while the request is open, "yes" or "no". */
	const STEP = 'prodtabs_review_step';

	const ACTION       = 'prodtabs_review';
	const MIN_DAYS     = 14;
	const MIN_PRODUCTS = 10;
	const LATER_DAYS   = 30;

	/** Hooks. */
	public static function init(): void {
		add_action( 'admin_init', array( __CLASS__, 'remember_since' ) );
		add_action( 'admin_notices', array( __CLASS__, 'notice' ) );
		add_action( 'admin_post_' . self::ACTION, array( __CLASS__, 'answer' ) );
	}

	/** Notes the first visit. */
	public static function remember_since(): void {
		if ( false === get_option( self::SINCE ) ) {
			add_option( self::SINCE, time(), '', false );
		}
	}

	/**
	 * Whether the question is due. Pure function, for the tests.
	 *
	 * @param mixed $answer   Stored answer of the user: "done", a time, or nothing.
	 * @param int   $since    Time of the first visit.
	 * @param int   $products Products with tabs of their own.
	 * @param bool  $imported Whether this is the report of a successful import.
	 * @param int   $now      Current time.
	 */
	public static function due( $answer, int $since, int $products, bool $imported, int $now ): bool {
		if ( 'done' === $answer || ( is_numeric( $answer ) && $now < (int) $answer ) ) {
			return false;
		}
		if ( $imported ) {
			return true;
		}
		return $since > 0 && $now - $since >= self::MIN_DAYS * DAY_IN_SECONDS && $products >= self::MIN_PRODUCTS;
	}

	/**
	 * Screen of ProdTabs the question may show on.
	 *
	 * @return string "screen", "import" (report of a successful import), or empty elsewhere.
	 */
	private static function context(): string {
		$screen = function_exists( 'get_current_screen' ) ? get_current_screen() : null;
		if ( ! $screen ) {
			return '';
		}
		// phpcs:disable WordPress.Security.NonceVerification.Recommended -- screen detection only.
		$page = isset( $_GET['page'] ) ? sanitize_key( wp_unslash( $_GET['page'] ) ) : '';
		if ( Admin_Import::PAGE === $page ) {
			$state = Import_Yikes::state();
			$ok    = 'done' === ( $state['status'] ?? '' ) && ! empty( $state['counts']['imported'] ) && empty( $state['counts']['errors'] );
			return $ok ? 'import' : '';
		}
		$settings = 'wc-settings' === $page && isset( $_GET['section'] ) && Admin_Settings::SECTION === $_GET['section'];
		// phpcs:enable
		return Admin_Hub::PAGE === $page || $settings || 'edit-' . Library::POST_TYPE === $screen->id ? 'screen' : '';
	}

	/**
	 * Link to an answer.
	 *
	 * @param string $answer yes, no, review, support, later or done.
	 */
	private static function link( string $answer ): string {
		return wp_nonce_url( admin_url( 'admin-post.php?action=' . self::ACTION . '&answer=' . $answer ), self::ACTION );
	}

	/** The question, or the step its answer leads to. */
	public static function notice(): void {
		if ( ! current_user_can( 'edit_products' ) ) {
			return;
		}
		$context = self::context();
		if ( '' === $context ) {
			return;
		}
		$user     = get_current_user_id();
		$products = Admin_Hub::products_with_tabs();
		if ( ! self::due( get_user_meta( $user, self::META, true ), (int) get_option( self::SINCE, 0 ), $products, 'import' === $context, time() ) ) {
			return;
		}
		$step     = (string) get_user_meta( $user, self::STEP, true );
		$new_tab  = '<span class="screen-reader-text"> ' . esc_html__( '(opens in a new tab)', 'prodtabs' ) . '</span>';
		?>
		<div class="notice notice-info prodtabs-review">
			<div class="prodtabs-review__row">
				<?php if ( 'yes' === $step ) : ?>
					<p><?php esc_html_e( 'Thank you! A review on WordPress.org helps other shops find ProdTabs.', 'prodtabs' ); ?></p>
					<div class="prodtabs-review__buttons">
						<a class="button button-primary" href="<?php echo esc_url( self::link( 'review' ) ); ?>" target="_blank" rel="noopener"><?php esc_html_e( 'Leave a review', 'prodtabs' ); ?><?php echo $new_tab; // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped -- escaped above. ?></a>
						<a href="<?php echo esc_url( self::link( 'done' ) ); ?>"><?php esc_html_e( 'I already did', 'prodtabs' ); ?></a>
					</div>
				<?php elseif ( 'no' === $step ) : ?>
					<p><?php esc_html_e( 'Tell us what is missing or what gets in the way: every message is read and helps improve ProdTabs.', 'prodtabs' ); ?></p>
					<div class="prodtabs-review__buttons">
						<a class="button button-primary" href="<?php echo esc_url( self::link( 'support' ) ); ?>" target="_blank" rel="noopener"><?php esc_html_e( 'Write to support', 'prodtabs' ); ?><?php echo $new_tab; // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped -- escaped above. ?></a>
						<a href="<?php echo esc_url( self::link( 'review' ) ); ?>" target="_blank" rel="noopener"><?php esc_html_e( 'Leave a review on WordPress.org', 'prodtabs' ); ?><?php echo $new_tab; // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped -- escaped above. ?></a>
					</div>
				<?php else : ?>
					<p>
						<strong><?php esc_html_e( 'Is ProdTabs useful to you?', 'prodtabs' ); ?></strong>
						<?php
						if ( 'import' === $context ) {
							esc_html_e( 'Your tabs have moved from Custom Product Tabs.', 'prodtabs' );
						} else {
							/* translators: %d: number of products. */
							echo esc_html( sprintf( _n( 'It runs the tabs of %d product of your shop.', 'It runs the tabs of %d products of your shop.', $products, 'prodtabs' ), $products ) );
						}
						?>
					</p>
					<div class="prodtabs-review__buttons">
						<a class="button button-primary" href="<?php echo esc_url( self::link( 'yes' ) ); ?>"><?php esc_html_e( 'Yes', 'prodtabs' ); ?></a>
						<a class="button" href="<?php echo esc_url( self::link( 'no' ) ); ?>"><?php esc_html_e( 'Not really', 'prodtabs' ); ?></a>
						<a href="<?php echo esc_url( self::link( 'later' ) ); ?>"><?php esc_html_e( 'Later', 'prodtabs' ); ?></a>
					</div>
				<?php endif; ?>
			</div>
		</div>
		<?php
	}

	/** Records the answer, then opens the review or support form, or goes back. */
	public static function answer(): void {
		check_admin_referer( self::ACTION );
		$answer = isset( $_GET['answer'] ) ? sanitize_key( wp_unslash( $_GET['answer'] ) ) : '';
		$user   = get_current_user_id();
		switch ( $answer ) {
			case 'yes':
			case 'no':
				update_user_meta( $user, self::STEP, $answer );
				break;
			case 'review':
			case 'done':
				update_user_meta( $user, self::META, 'done' );
				delete_user_meta( $user, self::STEP );
				break;
			case 'support':
			case 'later':
				// Asked again in a month; someone who wrote to support may be happy by then.
				update_user_meta( $user, self::META, time() + self::LATER_DAYS * DAY_IN_SECONDS );
				delete_user_meta( $user, self::STEP );
				break;
		}
		if ( 'review' === $answer ) {
			// phpcs:ignore WordPress.Security.SafeRedirect.wp_redirect_wp_redirect -- fixed address of the directory.
			wp_redirect( self::URL );
			exit;
		}
		if ( 'support' === $answer ) {
			// phpcs:ignore WordPress.Security.SafeRedirect.wp_redirect_wp_redirect -- fixed address of the support form.
			wp_redirect( Admin_Hub::support_url() );
			exit;
		}
		wp_safe_redirect( wp_get_referer() ? wp_get_referer() : Admin_Hub::url() );
		exit;
	}
}