<?php
namespace TemporaryLogin\Core;

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

class Ajax {

	const USER_CAPABILITY = 'manage_options';

	public static function register_hooks() {
		add_action( 'wp_ajax_temporary_login_get_app_data', [ __CLASS__, 'get_app_data' ] );
		add_action( 'wp_ajax_temporary_login_generate_temporary_user', [ __CLASS__, 'enable_access' ] );
		add_action( 'wp_ajax_temporary_login_revoke_temporary_users', [ __CLASS__, 'revoke_access' ] );
		add_action( 'wp_ajax_temporary_login_extend_access', [ __CLASS__, 'extend_access' ] );
		add_action( 'wp_ajax_temporary_login_send_login_by_elementor_connect', [ __CLASS__, 'send_login_by_elementor_connect' ] );
	}

	public static function get_app_data() {
		if ( empty( $_POST['nonce'] ) || ! wp_verify_nonce( $_POST['nonce'], 'e-premium-support-admin-' . get_current_user_id() ) ) {
			wp_send_json_error( 'Unauthorized', 401 );
		}

		if ( ! current_user_can( static::USER_CAPABILITY ) ) {
			wp_send_json_error( esc_html__( "You don't have permission to access this request", 'temporary-login' ) );
		}

		$current_user = wp_get_current_user();

		$data = [
			'status' => 'inactive',
			'current_user_logged_in_display_name' => $current_user->display_name ?? 'Unknown',
		];

		$temporary_users = Options::get_temporary_users();
		if ( ! empty( $temporary_users ) ) {
			$temporary_user = $temporary_users[0];
			$data = static::get_active_page_data( $temporary_user );
		}

		wp_send_json_success( $data );
	}

	private static function verify_request( $post_data ) {
		if ( empty( $post_data['nonce'] ) || ! wp_verify_nonce( $post_data['nonce'], 'e-premium-support-admin-' . get_current_user_id() ) ) {
			wp_send_json_error( 'Unauthorized', 401 );
		}

		if ( ! current_user_can( static::USER_CAPABILITY ) ) {
			wp_send_json_error( esc_html__( "You don't have permission to access this request", 'temporary-login' ) );
		}
	}

	private static function get_active_page_data( \WP_User $temporary_user ): array {
		$is_elementor_connected = false;

		$elementor_connect = static::get_elementor_connect();
		if ( $elementor_connect ) {
			$is_elementor_connected = $elementor_connect->is_connected();
		}

		$created_by_user_id = Options::get_created_by_user_id( $temporary_user->ID );
		if ( $created_by_user_id ) {
			$created_user = get_user_by( 'ID', $created_by_user_id );

			if ( $created_user ) {
				$reassign_to = $created_user->display_name;
				$reassign_user_profile_link = get_edit_user_link( $created_user->ID );
			}
		}

		return [
			'status' => 'active',
			'is_elementor_connected' => $is_elementor_connected,
			'login_url' => Options::get_login_url( $temporary_user->ID ),
			'expiration_human' => Options::get_expiration_human( $temporary_user->ID ),
			'reassign_to' => $reassign_to ?? '',
			'reassign_user_profile_link' => $reassign_user_profile_link ?? '',
		];
	}

	private static function get_elementor_connect() {
		if ( ! class_exists( '\Elementor\Plugin' ) ) {
			return false;
		}

		return \Elementor\Plugin::$instance->common->get_component( 'connect' )->get_app( 'temp-login' );
	}

	public static function enable_access() {
		if ( empty( $_POST['nonce'] ) || ! wp_verify_nonce( $_POST['nonce'], 'e-premium-support-admin-' . get_current_user_id() ) ) {
			wp_send_json_error( 'Unauthorized', 401 );
		}

		if ( ! current_user_can( static::USER_CAPABILITY ) ) {
			wp_send_json_error( esc_html__( "You don't have permission to access this request", 'temporary-login' ) );
		}

		if ( Options::has_temporary_user() ) {
			// Temporary user already exists
			wp_send_json_success();
		}

		$user_ID = Options::generate_temporary_user();
		if ( is_wp_error( $user_ID ) ) {
			wp_send_json_error( $user_ID );
		}

		if ( ! empty( $_POST['is_keep_user_posts'] ) && 'true' === $_POST['is_keep_user_posts'] ) {
			Options::set_created_by_user_id( $user_ID );
		}

		wp_send_json_success();
	}

	public static function revoke_access() {
		if ( empty( $_POST['nonce'] ) || ! wp_verify_nonce( $_POST['nonce'], 'e-premium-support-admin-' . get_current_user_id() ) ) {
			wp_send_json_error( 'Unauthorized', 401 );
		}

		if ( ! current_user_can( static::USER_CAPABILITY ) ) {
			wp_send_json_error( esc_html__( "You don't have permission to access this request", 'temporary-login' ) );
		}

		Options::remove_all_temporary_users();

		wp_send_json_success();
	}

	public static function extend_access() {
		if ( empty( $_POST['nonce'] ) || ! wp_verify_nonce( $_POST['nonce'], 'e-premium-support-admin-' . get_current_user_id() ) ) {
			wp_send_json_error( 'Unauthorized', 401 );
		}

		if ( ! current_user_can( static::USER_CAPABILITY ) ) {
			wp_send_json_error( esc_html__( "You don't have permission to access this request", 'temporary-login' ) );
		}

		$temporary_users = Options::get_temporary_users();
		if ( empty( $temporary_users ) ) {
			wp_send_json_error( new \WP_Error( 'no_temporary_users', 'No temporary users found' ) );
		}

		$user = $temporary_users[0];

		if ( ! Options::extend_expiration( $user->ID ) ) {
			wp_send_json_error( new \WP_Error( 'no_expiration', 'No expiration found' ) );
		}

		wp_send_json_success();
	}

	public static function send_login_by_elementor_connect() {
		if ( empty( $_POST['nonce'] ) || ! wp_verify_nonce( $_POST['nonce'], 'e-premium-support-admin-' . get_current_user_id() ) ) {
			wp_send_json_error( 'Unauthorized', 401 );
		}

		if ( ! current_user_can( static::USER_CAPABILITY ) ) {
			wp_send_json_error( esc_html__( "You don't have permission to access this request", 'temporary-login' ) );
		}

		$elementor_connect = static::get_elementor_connect();
		if ( ! $elementor_connect ) {
			wp_send_json_error( new \WP_Error( 'no_elementor_connect', 'Elementor Connect not found' ) );
		}

		$temporary_users = Options::get_temporary_users();
		if ( empty( $temporary_users ) ) {
			wp_send_json_error( new \WP_Error( 'no_temporary_users', 'No temporary users found' ) );
		}

		$user = $temporary_users[0];
		$login_url = Options::get_login_url( $user->ID );

		$response = $elementor_connect->send_login( $login_url );
		if ( is_wp_error( $response ) ) {
			wp_send_json_error( $response );
		}

		wp_send_json_success();
	}
}