<?php
/**
 * Payment-failure admin notice (plugin >= 1.7.3).
 *
 * WHY: when a 6rsh subscription payment fails, the account keeps FULL access
 * for a 3-day grace window. Before this notice, a store admin had no way to
 * know — they discovered it when sends stopped, three days later, with the
 * account already on Free. That is exactly the churn this exists to prevent.
 *
 * Design rules:
 *   - Renders ONLY while 6rsh reports past_due/grace with a future
 *     grace_ends_at. Absent fields (older 6rsh) render nothing at all.
 *   - Dismissible per-user, and the dismissal auto-expires so the notice
 *     returns the next day while the problem persists.
 *   - Says plainly that NOTHING has been or will be deleted. That sentence is
 *     load-bearing for trust — do not soften it.
 *   - Bilingual EN + AR RTL, matched to the store's own admin locale.
 *   - Never shown to users who cannot act on it (needs manage_woocommerce).
 *
 * @package SixRsh_WhatsApp
 */

defined( 'ABSPATH' ) || exit;

class SixRsh_Billing_Notice {

	/** Per-user dismissal timestamp. */
	const USER_META_DISMISSED = 'sixrsh_billing_notice_dismissed_at';

	/** A dismissal only silences the notice for this long. */
	const DISMISS_TTL = DAY_IN_SECONDS;

	/** Nonce action for the dismiss request. */
	const NONCE = 'sixrsh_dismiss_billing_notice';

	public static function init(): void {
		add_action( 'admin_notices', array( __CLASS__, 'render' ) );
		add_action( 'wp_ajax_sixrsh_dismiss_billing_notice', array( __CLASS__, 'handle_dismiss' ) );
	}

	/** Whether the current admin screen should show the notice. */
	private static function should_render(): bool {
		if ( ! is_admin() || wp_doing_ajax() ) {
			return false;
		}

		// Only people who could actually fix it.
		if ( ! current_user_can( 'manage_woocommerce' ) && ! current_user_can( 'manage_options' ) ) {
			return false;
		}

		if ( ! class_exists( 'SixRsh_Entitlements' ) ) {
			return false;
		}

		// The strict gate: past_due/grace AND a future deadline.
		if ( ! SixRsh_Entitlements::in_payment_grace() ) {
			return false;
		}

		return ! self::is_dismissed();
	}

	private static function is_dismissed(): bool {
		$at = (int) get_user_meta( get_current_user_id(), self::USER_META_DISMISSED, true );

		return $at > 0 && ( time() - $at ) < self::DISMISS_TTL;
	}

	/** True when the store's admin language is Arabic. */
	private static function is_arabic(): bool {
		$locale = function_exists( 'determine_locale' ) ? determine_locale() : get_locale();

		return 0 === strpos( (string) $locale, 'ar' );
	}

	public static function render(): void {
		if ( ! self::should_render() ) {
			return;
		}

		$days    = SixRsh_Entitlements::grace_days_left();
		$billing = 'https://www.6rsh.com/billing';
		$ar      = self::is_arabic();

		if ( $ar ) {
			$title = __( 'تعذّرت عملية الدفع في 6rsh', '6rsh-messaging-notifications' );
			/* translators: %d: whole days remaining in the payment grace window. */
			$body  = sprintf(
				__( 'لم تتم عملية الدفع لاشتراكك. لديك %d يوم/أيام من الوصول الكامل قبل أن ينتقل الحساب إلى الخطة المجانية.', '6rsh-messaging-notifications' ),
				$days
			);
			$safe  = __( 'لم يتم حذف أي شيء، ولن يتم حذف أي شيء. جهات الاتصال والمحادثات والحملات وسجلّ الطلبات كلها محفوظة، وتعود جميع الميزات فورًا بمجرد نجاح الدفع.', '6rsh-messaging-notifications' );
			$cta   = __( 'تحديث طريقة الدفع', '6rsh-messaging-notifications' );
			$dis   = __( 'إخفاء', '6rsh-messaging-notifications' );
		} else {
			$title = __( 'Your 6rsh payment did not go through', '6rsh-messaging-notifications' );
			/* translators: %d: whole days remaining in the payment grace window. */
			$body  = sprintf(
				_n(
					'We could not charge your card. You have %d day of full access left before the account moves to the Free plan.',
					'We could not charge your card. You have %d days of full access left before the account moves to the Free plan.',
					max( 1, $days ),
					'6rsh-messaging-notifications'
				),
				$days
			);
			$safe  = __( 'Nothing has been deleted, and nothing will be. Your contacts, conversations, campaigns and order history are all kept, and every feature returns the moment your payment succeeds.', '6rsh-messaging-notifications' );
			$cta   = __( 'Update payment method', '6rsh-messaging-notifications' );
			$dis   = __( 'Dismiss', '6rsh-messaging-notifications' );
		}

		$dir = $ar ? 'rtl' : 'ltr';
		?>
		<div class="notice notice-warning is-dismissible sixrsh-billing-notice" dir="<?php echo esc_attr( $dir ); ?>">
			<p style="font-weight:600;margin-bottom:.35em;">
				<?php echo esc_html( $title ); ?>
			</p>
			<p style="margin-top:0;">
				<?php echo esc_html( $body ); ?>
			</p>
			<p style="margin-top:0;">
				<strong><?php echo esc_html( $safe ); ?></strong>
			</p>
			<p>
				<a class="button button-primary"
				   href="<?php echo esc_url( $billing ); ?>"
				   target="_blank" rel="noopener noreferrer">
					<?php echo esc_html( $cta ); ?>
				</a>
			</p>
		</div>
		<?php
		wp_print_inline_script_tag(
			'(function(){var n=document.querySelector(".sixrsh-billing-notice");if(!n){return;}'
			. 'n.addEventListener("click",function(e){if(!e.target.classList.contains("notice-dismiss")){return;}'
			. 'var b=new FormData();b.append("action","sixrsh_dismiss_billing_notice");'
			. 'b.append("_wpnonce",' . wp_json_encode( wp_create_nonce( self::NONCE ) ) . ');'
			. 'window.fetch(' . wp_json_encode( admin_url( 'admin-ajax.php' ) ) . ',{method:"POST",credentials:"same-origin",body:b});'
			. '});})();'
		);
	}

	/** Record the dismissal for this user. Expires after DISMISS_TTL. */
	public static function handle_dismiss(): void {
		if ( ! check_ajax_referer( self::NONCE, '_wpnonce', false ) ) {
			wp_send_json_error( array( 'reason' => 'bad_nonce' ), 403 );
		}

		if ( ! current_user_can( 'manage_woocommerce' ) && ! current_user_can( 'manage_options' ) ) {
			wp_send_json_error( array( 'reason' => 'forbidden' ), 403 );
		}

		update_user_meta( get_current_user_id(), self::USER_META_DISMISSED, time() );

		wp_send_json_success();
	}
}