<?php
/**
 * Front-end asset registration.
 *
 * @package PluginBrewery\AdClickTracking
 */

namespace PluginBrewery\AdClickTracking;

defined( 'ABSPATH' ) || exit;

/**
 * Enqueues the capture script and passes its runtime configuration to the
 * front end. Only registered while the Gravity Forms adapter is available —
 * see Plugin::boot().
 */
class Assets {

	/**
	 * Binds the enqueue hooks.
	 */
	public function register(): void {
		add_action( 'wp_enqueue_scripts', array( $this, 'enqueue_frontend' ) );
		add_action( 'enqueue_block_assets', array( $this, 'hide_fields_in_editor' ) );
	}

	/**
	 * Registers and enqueues the capture script together with its config.
	 */
	public function enqueue_frontend(): void {
		$constants = Constants::get_instance();
		$base_url  = $constants->get_plugin_data( 'url' );
		$version   = $constants->get_plugin_data( 'version' );

		wp_register_script( 'pb-act-js-cookie', $base_url . '/assets/dist/js.cookie.min.js', array(), '3.0.5', true );
		wp_register_script( 'pb-act-front-end', $base_url . '/assets/js/front-end.js', array( 'pb-act-js-cookie' ), $version, true );

		$config = array(
			'cookiePrefix' => Constants::COOKIE_PREFIX,
			'cookieExpiry' => Constants::COOKIE_EXPIRY_DAYS,
			'fieldPrefix'  => Constants::FIELD_CSS_PREFIX,
			'attribution'  => 'last' === get_option( Constants::ATTRIBUTION_OPTION, 'first' ) ? 'last' : 'first',
		);

		$config      = apply_filters( 'pb_act_js_config', $config );
		$config_json = wp_json_encode( is_array( $config ) ? $config : array() );
		if ( false !== $config_json ) {
			wp_add_inline_script(
				'pb-act-front-end',
				'window.' . Constants::JS_CONFIG_GLOBAL . ' = Object.assign( {}, window.' . Constants::JS_CONFIG_GLOBAL . ' || {}, ' . $config_json . ' );',
				'before'
			);
		}

		wp_enqueue_script( 'pb-act-front-end' );

		// Keep injected Gravity Forms fields out of the layout without hiding the input from JS.
		$inline_css = '.gform_wrapper .gfield[class*="' . Constants::FIELD_CSS_PREFIX . '"]{display:none!important;}';
		wp_register_style( 'pb-act-front-end', false, array(), $version );
		wp_enqueue_style( 'pb-act-front-end' );
		wp_add_inline_style( 'pb-act-front-end', $inline_css );
	}

	/**
	 * Hides injected Gravity Forms fields in the block editor preview.
	 */
	public function hide_fields_in_editor(): void {
		if ( ! is_admin() ) {
			return;
		}
		$inline_css = '.gform_wrapper .gfield[class*="' . Constants::FIELD_CSS_PREFIX . '"]{display:none!important;}';
		wp_add_inline_style( 'wp-block-library', $inline_css );
	}
}