<?php
if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

/**
 * "AI Settings" submenu page — pick a provider (Anthropic or OpenAI) and
 * enter its API key. Overridable per-provider via CGARD_AI_ANTHROPIC_API_KEY /
 * CGARD_AI_OPENAI_API_KEY constants in wp-config.php for anyone who'd rather
 * keep keys out of the database.
 */
class CGARD_Settings {

	public function __construct() {
		add_action( 'admin_menu', array( $this, 'register_menu' ) );
		add_action( 'admin_init', array( $this, 'register_settings' ) );
	}

	public function register_menu() {
		add_submenu_page(
			'clarityguard',
			__( 'AI Settings', 'clarityguard' ),
			__( 'AI Settings', 'clarityguard' ),
			'manage_options',
			'clarityguard-settings',
			array( $this, 'render_page' )
		);
	}

	public function register_settings() {
		register_setting(
			'cgard_ai_settings',
			'cgard_ai_provider',
			array(
				'sanitize_callback' => array( $this, 'sanitize_provider' ),
				'default'           => 'anthropic',
			)
		);

		foreach ( array( 'cgard_ai_anthropic_api_key', 'cgard_ai_openai_api_key' ) as $option ) {
			register_setting(
				'cgard_ai_settings',
				$option,
				array(
					'sanitize_callback' => 'sanitize_text_field',
					'default'           => '',
				)
			);
		}

		register_setting(
			'cgard_ai_settings',
			'cgard_ai_anthropic_model',
			array(
				'sanitize_callback' => 'sanitize_text_field',
				'default'           => 'claude-3-5-haiku-latest',
			)
		);

		register_setting(
			'cgard_ai_settings',
			'cgard_ai_openai_model',
			array(
				'sanitize_callback' => 'sanitize_text_field',
				'default'           => 'gpt-4o-mini',
			)
		);
	}

	public function sanitize_provider( $value ) {
		return in_array( $value, CGARD_AI_Client::PROVIDERS, true ) ? $value : 'anthropic';
	}

	public function render_page() {
		if ( ! current_user_can( 'manage_options' ) ) {
			return;
		}

		$active_provider      = CGARD_AI_Client::get_active_provider_key();
		$anthropic_key_locked = defined( 'CGARD_AI_ANTHROPIC_API_KEY' ) && CGARD_AI_ANTHROPIC_API_KEY;
		$openai_key_locked    = defined( 'CGARD_AI_OPENAI_API_KEY' ) && CGARD_AI_OPENAI_API_KEY;

		require CGARD_PLUGIN_DIR . 'admin/views/settings-page.php';
	}
}