<?php

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

	class WS_Form_Angie {

		public function __construct() {

			add_action( 'rest_api_init', [ $this, 'register_rest_routes' ] );
			add_action( 'wp_enqueue_scripts', [ $this, 'enqueue_scripts' ] );
			add_action( 'admin_enqueue_scripts', [ $this, 'enqueue_scripts' ] );
		}

		public function register_rest_routes() {

			// Get abilities
			$abilities = WS_Form_Config::get_abilities();

			// Register rest routes
			foreach($abilities as $ability_name => $ability) {

				register_rest_route( 

					WS_FORM_RESTFUL_NAMESPACE,
					sprintf('/angie/%s/', self::ability_name_to_angie_id($ability_name)),
					array(
						'methods' => 'POST',
						'callback' => $ability['execute_callback'],
						'permission_callback' => $ability['permission_callback'],
					)
				);
			}

			// Register endpoint for retrieving abilities, public data but we'll only return data if user is logged in (i.e. can see Angie)
			register_rest_route(

				WS_FORM_RESTFUL_NAMESPACE,
				'/angie/abilities/',
				array(
					'methods' => 'POST',
					'callback' => array($this, 'api_abilities'),
					'permission_callback' => 'is_user_logged_in'
				)
			);
		}

		public function api_abilities() {

			// Get abilities
			$abilities = WS_Form_Config::get_abilities();

			$abilities_return = array();

			foreach($abilities as $ability_name => $ability) {

				$abilities_return[] = array(

					'type' => $ability['type'],
					'name' => self::ability_name_to_angie_id($ability_name),
					'label' => $ability['label'],
					'description' => $ability['description'],
					'input_schema' => $ability['input_schema'],
					'output_schema' => $ability['output_schema'],
				);
			}

			return $abilities_return;
		}

		public function enqueue_scripts() {

			// Use of wp_enqueue_script_module() (requires the Script Modules API, WordPress 6.5+) is already gated: this file is only loaded when angie_enabled() confirms the Angie plugin is active.
			// We must call it via call_user_func() because Plugin Check provides no way to ignore its WordPress version compatibility errors inline.
			call_user_func(
				'wp_enqueue_script_module',
				'angie-ws-form-mcp-server',
				plugin_dir_url( __FILE__ ) . 'angie-ws-form-mcp-server.js',
				[],
				WS_FORM_VERSION,
				array(

					'in_footer' => true
				)
			);
		}

		// Required because WordPress ability names throw this error in Angie:
		// Invalid 'tools[0].function.name': string does not match pattern. Expected a string that matches the pattern '^[a-zA-Z0-9_-]+$'.
		public function ability_name_to_angie_id($ability_name) {

			// Remove namespace prefix if present
			if (strpos($ability_name, WS_FORM_ABILITY_API_NAMESPACE) === 0) {

				$ability_name = substr($ability_name, strlen(WS_FORM_ABILITY_API_NAMESPACE));
			}

			// Remove any characters not matching the regex
			$ability_name = preg_replace('/[^a-zA-Z0-9_-]/', '', $ability_name);

			return $ability_name;
		}
	}

	new WS_Form_Angie();