<?php
/**
 * Remove Role Tool.
 *
 * Deletes a custom role. Built-in WordPress roles (administrator, editor,
 * author, contributor, subscriber) cannot be removed.
 *
 * @package   Agenistrator
 * @since     1.0.0
 * @author    Alex Ruban <alex@maximum.guru>
 * @author    Maximum Software Inc <contact@maximum.software>
 * @license   GPL-3.0-only
 * @link      https://agenistrator.com/
 *
 * SPDX-FileCopyrightText: 2025-2026 Alex Ruban <alex@maximum.guru>
 * SPDX-FileCopyrightText: 2025-2026 Maximum Software Inc <contact@maximum.software>
 * SPDX-License-Identifier: GPL-3.0-only
 */

namespace Agenistrator;

// Direct access prevention
if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

/**
 * Remove_Role_Tool class.
 */
class Remove_Role_Tool extends Tool {

	private const PROTECTED_ROLES = array( 'administrator', 'editor', 'author', 'contributor', 'subscriber' );

	/**
	 * Get the tool ID.
	 *
	 * @return string The tool ID.
	 * @since     1.0.0
	 */
	public function get_id() {
		return 'remove_role';
	}

	/**
	 * Get the tool name.
	 *
	 * @return string The tool name.
	 * @since     1.0.0
	 */
	public function get_name() {
		return __( 'Remove Role', 'agenistrator' );
	}

	/**
	 * Get the tool description.
	 *
	 * @return string The tool description.
	 * @since     1.0.0
	 */
	public function get_description() {
		return 'Delete a custom role.';
	}

	/**
	 * Get additional description instructions for the LLM.
	 *
	 * @return string Additional instructions appended to description.
	 * @since     1.0.0
	 */
	public function get_description_instructions() {
		return 'Built-in WordPress roles (administrator, editor, author, contributor, subscriber) cannot be removed.';
	}

	/**
	 * Get the parameters schema for this tool.
	 *
	 * @return array Parameters schema in JSON Schema format.
	 * @since     1.0.0
	 */
	public function get_parameters() {
		return array(
			'type'       => 'object',
			'properties' => array(
				'role' => array(
					'type'        => 'string',
					'description' => 'The role slug to remove',
				),
			),
			'required'   => array( 'role' ),
		);
	}

	/**
	 * Check if the current user can execute this tool.
	 *
	 * @return bool True if the current user has permission.
	 * @since     1.0.0
	 */
	public function current_user_can_execute() {
		return current_user_can( 'manage_options' );
	}

	/**
	 * Check if this tool is read-only.
	 *
	 * @return bool True if the tool only reads data.
	 * @since     1.0.0
	 */
	public function is_read_only() {
		return false;
	}

	/**
	 * Execute the tool with the given arguments.
	 *
	 * @param array $args The tool arguments.
	 *
	 * @return array The tool execution result.
	 * @since     1.0.0
	 */
	protected function execute( $args ) {
		$role_slug = sanitize_key( $args['role'] );

		if ( in_array( $role_slug, self::PROTECTED_ROLES, true ) ) {
			return $this->error_response( 'Cannot remove built-in WordPress role: ' . $role_slug );
		}

		$wp_roles = wp_roles();
		if ( ! isset( $wp_roles->roles[ $role_slug ] ) ) {
			return $this->error_response( 'Role not found: ' . $role_slug );
		}

		$role_name = $wp_roles->roles[ $role_slug ]['name'];
		remove_role( $role_slug );

		// Verify removal
		$wp_roles = wp_roles();
		if ( isset( $wp_roles->roles[ $role_slug ] ) ) {
			return $this->error_response( 'Failed to remove role' );
		}

		return $this->success_response(
			'Role removed successfully',
			array(
				'slug' => $role_slug,
				'name' => $role_name,
			)
		);
	}
}
