<?php
/**
 * Frontend WebMCP runtime bootstrap.
 *
 * @package ModelGainWebmcpForms
 */

namespace ModelGain\WordPress\WebmcpForms;

/**
 * Provides a public, secret-free runtime configuration.
 */
final class FrontendRuntime {
	/**
	 * Property value.
	 *
	 * @var ContactForm7Adapter
	 */
	private $adapter;
	/**
	 * Property value.
	 *
	 * @var Settings
	 */
	private $settings;
	/**
	 * Property value.
	 *
	 * @var SchemaCompiler
	 */
	private $compiler;

	/**
	 * Perform the documented operation.
	 *
	 * @param ContactForm7Adapter $adapter Form adapter.
	 * @param Settings            $settings Settings store.
	 * @param SchemaCompiler      $compiler Schema compiler.
	 */
	public function __construct( ContactForm7Adapter $adapter, Settings $settings, SchemaCompiler $compiler ) {
		$this->adapter  = $adapter;
		$this->settings = $settings;
		$this->compiler = $compiler;
	}

	/**
	 * Enqueue the progressive-enhancement runtime when at least one form is
	 * explicitly enabled and compatible.
	 *
	 * @return void
	 */
	public function enqueue() {
		$forms   = $this->adapter->discover();
		$exposed = $this->settings->exposed_forms( $forms );
		if ( empty( $exposed ) ) {
			return;
		}

		$handle          = 'modelgain-webmcp-forms';
		$runtime_path    = plugin_dir_path( MODELGAIN_WEBMCP_FORMS_FILE ) . 'assets/js/webmcp-runtime.js';
		$runtime_hash    = is_readable( $runtime_path ) ? hash_file( 'sha256', $runtime_path ) : false;
		$runtime_version = MODELGAIN_WEBMCP_FORMS_VERSION;
		if ( is_string( $runtime_hash ) ) {
			$runtime_version .= '-' . substr( $runtime_hash, 0, 12 );
		}

		wp_register_script(
			$handle,
			plugins_url( 'assets/js/webmcp-runtime.js', MODELGAIN_WEBMCP_FORMS_FILE ),
			array(),
			$runtime_version,
			true
		);
		$config = array( 'forms' => array() );
		foreach ( $exposed as $item ) {
			$form              = $item['form'];
			$setting           = $item['settings'];
			$config['forms'][] = array(
				'formId'      => $form->id(),
				'toolName'    => $setting['tool_name'],
				'title'       => $form->title(),
				'description' => sprintf(
					/* translators: %s: Contact Form 7 form title. */
					__( 'Fill the %s Contact Form 7 form for human review. This tool fills fields only and does not submit the form.', 'modelgain-webmcp-forms' ),
					$form->title()
				),
				'inputSchema' => $this->compiler->compile( $form ),
			);
		}

		$encoded_config = wp_json_encode(
			$config,
			JSON_HEX_TAG | JSON_HEX_AMP | JSON_HEX_APOS | JSON_HEX_QUOT
		);
		if ( false === $encoded_config ) {
			return;
		}

		wp_add_inline_script( $handle, 'window.ModelGainWebMCPForms = ' . $encoded_config . ';', 'before' );
		wp_enqueue_script( $handle );
	}
}