<?php

namespace AdPresso\Frontend;

use AdPresso\Entities\Placement;
use AdPresso\Placements\PlacementRepository;
use AdPresso\Runtime;
use AdPresso\RuntimeDebugger;

/**
 * Handles the rendering of placements based on their type and processed data.
 */
class PlacementRenderer {

	private PlacementRepository       $placement_repository;
	private static ?PlacementRenderer $instance = null;

	/**
	 * @return self
	 */
	public static function get_instance(): self {
		if ( self::$instance === null ) {
			self::$instance = new self();
		}
		return self::$instance;
	}

	public function __construct() {
		$this->placement_repository = adpresso_get_placement_repository();
	}

	/**
	 * Render all placements from the processed placements data for a specific type.
	 *
	 * @param string $type_id
	 *
	 * @return string
	 */
	public function render_placements_by_type( string $type_id ): string {
		$processed_data = Runtime::get_processed_data();
		$output         = '';

		foreach ( $processed_data as $placement_id => $data ) {
			$placement = $this->placement_repository->get( (int) $placement_id );

			if ( $placement instanceof Placement && $placement->is_type( $type_id ) && $placement->is_backend_valid ) {
				RuntimeDebugger::mark_output_triggered( $placement_id );

				if ( $data['output_mode'] === 'ssr' && isset( $data['content'] ) ) {
					if ( method_exists( $placement, 'render_with_wrapper' ) ) {
						$output .= $placement->render_with_wrapper( $data['content'] );
					}
				} elseif ( $data['output_mode'] === 'js' ) {
					if ( method_exists( $placement, 'get_placeholder_html' ) ) {
						$output .= $placement->get_placeholder_html();
					}
				}
			}
		}
		return $output;
	}

	/**
	 * Render a single placement.
	 *
	 * @param Placement $placement
	 * @param string    $content
	 *
	 * @return string
	 */
	public function render( Placement $placement, string $content ): string {
		RuntimeDebugger::mark_output_triggered( $placement->get_id() );
		return $placement->render_with_wrapper( $content );
	}
}