<?php
/**
 * Frontend & Markup
 *
 * @package cartflows
 */

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

/**
 * Flow Markup
 *
 * @since 1.0.0
 */
class Cartflows_Pro_Flow_Frontend {


	/**
	 * Member Variable
	 *
	 * @var object instance
	 */
	private static $instance;

	/**
	 *  Initiator
	 */
	public static function get_instance() {
		if ( ! isset( self::$instance ) ) {
			self::$instance = new self();
		}
		return self::$instance;
	}

	/**
	 *  Constructor
	 */
	public function __construct() {

		/* Analytics */
		add_action( 'wp_footer', array( $this, 'footer_markup' ) );
	}

	/**
	 *  Footer markup
	 */
	public function footer_markup() {

		if ( wcf()->utils->is_step_post_type() ) {

			$open_class = '';

			if ( isset( $_GET['wcf-mollie-return'] ) ) {
				$open_class = ' show ';
			}

			// @codingStandardsIgnoreStart
			?>
			<div class="wcf-loader-bg <?php echo $open_class; ?>">
				<div class="wcf-loader-wrap">
					<div class="wcf-loader"><?php _e( 'Loading...', 'cartflows-pro' ); ?></div>
					<div class="wcf-order-msg">
						<p class="wcf-process-msg" ><?php _e( 'Processing Order...', 'cartflows-pro' ); ?></p>
						<p class="wcf-note wcf-note-yes"><?php _e( 'Please wait while we process your payment...', 'cartflows-pro' ); ?></p>
						<p class="wcf-note wcf-note-no"><?php _e( 'Please wait while we redirect you...', 'cartflows-pro' ); ?></p>
					</div>
				</div>
			</div>
			<?php
			// @codingStandardsIgnoreEnd
		}
	}

	/**
	 * Get next step URL.
	 *
	 * @since 1.0.0
	 * @param int   $step_id step ID.
	 * @param array $data order data.
	 *
	 * @return string
	 */
	public function get_next_step_url( $step_id, $data ) {

		$wcf_step_obj  = wcf_pro_get_step( $step_id );
		$step_id       = intval( $step_id );
		$flow_id       = $wcf_step_obj->get_flow_id();
		$flow_steps    = $wcf_step_obj->get_flow_steps();
		$control_step  = $wcf_step_obj->get_control_step();
		$link          = '#';
		$next_step_id  = false;
		$order_id      = $data['order_id'];
		$order_key     = $data['order_key'];
		$template_type = isset( $data['template_type'] ) ? $data['template_type'] : '';
		$session_key   = wcf_pro()->session->get_session_key( $flow_id );

		if ( ! $flow_id ) {
			return $link;
		}

		if ( 'upsell' === $template_type ) {

			if ( 'offer_accepted' === $data['action'] ) {
				$next_step_id = $this->get_next_step_id_for_upsell_accepted( $wcf_step_obj, $flow_steps, $step_id, $control_step );
			} else {
				$next_step_id = $this->get_next_step_id_for_upsell_rejected( $wcf_step_obj, $flow_steps, $step_id, $control_step );
			}
		} elseif ( 'downsell' === $template_type ) {

			if ( 'offer_accepted' === $data['action'] ) {
				$next_step_id = $this->get_next_step_id_for_downsell_accepted( $wcf_step_obj, $flow_steps, $step_id, $control_step );
			} else {
				$next_step_id = $this->get_next_step_id_for_downsell_rejected( $wcf_step_obj, $flow_steps, $step_id, $control_step );
			}
		} else {

			/* This is normal next step of flow */
			$next_step_id = $wcf_step_obj->get_next_step_id();
		}

		if ( $next_step_id ) {

			$this->may_be_complete_order( $next_step_id, $order_id );

			$query_args = array(
				'wcf-order' => $order_id,
				'wcf-key'   => $order_key,
			);

			if ( $session_key ) {
				$query_args['wcf-sk'] = $session_key;
			}

			$link = add_query_arg( $query_args, get_permalink( $next_step_id ) );
		}

		return $link;
	}

	/**
	 * Normalize status if template is of type thank you page.
	 *
	 * @since 1.0.0
	 * @param int $next_step_id next step ID.
	 * @param int $order_id order id.
	 *
	 * @return void
	 */
	public function may_be_complete_order( $next_step_id, $order_id ) {

		wcf()->logger->log( 'Entering: ' . __CLASS__ . '::' . __FUNCTION__ );

		$template_type = get_post_meta( $next_step_id, 'wcf-step-type', true );

		if ( 'thankyou' === $template_type ) {

			$order = wc_get_order( $order_id );

			wcf_pro()->order->may_be_normalize_status( $order );
		}
	}

	/**
	 * Get next step id for upsell.
	 *
	 * @since 1.0.0
	 * @param object $wcf_step_obj step object.
	 * @param array  $steps        flow steps.
	 * @param int    $step_id      step ID.
	 * @param int    $control_step control step ID.
	 *
	 * @return int
	 */
	public function get_next_step_id_for_upsell_accepted( $wcf_step_obj, $steps, $step_id, $control_step ) {

		$next_step_id    = false;
		$next_step_index = false;

		if ( empty( $steps ) ) {
			return $next_step_id;
		} else {
			$next_yes_step = get_post_meta( $step_id, 'wcf-yes-next-step', true );

			if ( ! empty( $next_yes_step ) ) {

				$next_step_id = $next_yes_step;
			} else {

				foreach ( $steps as $i => $step ) {

					if ( intval( $step['id'] ) === $control_step ) {

						$next_step_index = $i + 1;
						break;
					}
				}

				while ( $next_step_index && isset( $steps[ $next_step_index ] ) ) {

					$temp_next_step_id       = $steps[ $next_step_index ]['id'];
					$temp_next_step_template = get_post_meta( $temp_next_step_id, 'wcf-step-type', true );

					if ( 'downsell' === $temp_next_step_template ) {
						$next_step_index++;
					} else {
						$next_step_id = $temp_next_step_id;
						break;
					}
				}
			}
		}

		return $next_step_id;
	}

	/**
	 * Get next step id for upsell rejected.
	 *
	 * @since 1.0.0
	 * @param object $wcf_step_obj step object.
	 * @param array  $steps        flow steps.
	 * @param int    $step_id      step ID.
	 * @param int    $control_step control step ID.
	 *
	 * @return int
	 */
	public function get_next_step_id_for_upsell_rejected( $wcf_step_obj, $steps, $step_id, $control_step ) {

		$next_step_id = false;

		if ( empty( $steps ) ) {
			return $next_step_id;
		} else {

			$next_no_step = get_post_meta( $step_id, 'wcf-no-next-step', true );

			if ( ! empty( $next_no_step ) ) {
				$next_step_id = $next_no_step;
			} else {

				$next_step_id = $wcf_step_obj->get_next_step_id();
			}
		}

		return $next_step_id;
	}

	/**
	 * Get next step id for downsell accepted.
	 *
	 * @since 1.0.0
	 * @param object $wcf_step_obj step object.
	 * @param array  $steps        flow steps.
	 * @param int    $step_id      step ID.
	 * @param int    $control_step control step ID.
	 *
	 * @return int
	 */
	public function get_next_step_id_for_downsell_accepted( $wcf_step_obj, $steps, $step_id, $control_step ) {

		$next_step_id = false;

		if ( empty( $steps ) ) {
			return $next_step_id;
		} else {
			$next_yes_step = get_post_meta( $step_id, 'wcf-yes-next-step', true );

			if ( ! empty( $next_yes_step ) ) {
				$next_step_id = $next_yes_step;
			} else {

				$next_step_id = $wcf_step_obj->get_next_step_id();
			}
		}

		return $next_step_id;
	}

	/**
	 * Get next step id for downsell rejected.
	 *
	 * @since 1.0.0
	 * @param object $wcf_step_obj step object.
	 * @param array  $steps        flow steps.
	 * @param int    $step_id      step ID.
	 * @param int    $control_step control step ID.
	 *
	 * @return int
	 */
	public function get_next_step_id_for_downsell_rejected( $wcf_step_obj, $steps, $step_id, $control_step ) {

		$next_step_id = false;

		if ( empty( $steps ) ) {
			return $next_step_id;
		} else {

			$next_no_step = get_post_meta( $step_id, 'wcf-no-next-step', true );

			if ( ! empty( $next_no_step ) ) {
				$next_step_id = $next_no_step;
			} else {

				$next_step_id = $wcf_step_obj->get_next_step_id();
			}
		}

		return $next_step_id;
	}

	/**
	 * Get thank you page URL.
	 *
	 * @since 1.0.0
	 * @param int   $step_id step ID.
	 * @param array $data order data.
	 *
	 * @return string
	 */
	public function get_thankyou_page_url( $step_id, $data ) {

		$wcf_step_obj = wcf_pro_get_step( $step_id );
		$step_id      = intval( $step_id );
		$flow_id      = $wcf_step_obj->get_flow_id();
		$link         = '#';
		$order_id     = $data['order_id'];
		$order_key    = $data['order_key'];

		if ( ! $flow_id ) {
			return $link;
		}

		$thankyou_id = $wcf_step_obj->get_thankyou_page_id();

		if ( $thankyou_id ) {

			$this->may_be_complete_order( $thankyou_id, $order_id );

			$link = add_query_arg(
				array(
					'wcf-order' => $order_id,
					'wcf-key'   => $order_key,
				),