<?php

if ( ! class_exists( 'Argus_Request_Inputs' ) ) {

class Argus_Request_Inputs {

	public static function collect() {
		$inputs = array();

		foreach ( (array) $_GET as $key => $value ) { // phpcs:ignore WordPress.Security.NonceVerification
			self::flatten( 'GET:' . $key, $value, $inputs );
		}
		foreach ( (array) $_POST as $key => $value ) { // phpcs:ignore WordPress.Security.NonceVerification
			self::flatten( 'POST:' . $key, $value, $inputs );
		}

		$raw_body = file_get_contents( 'php://input' ); // phpcs:ignore WordPress.WP.AlternativeFunctions
		if ( is_string( $raw_body ) && '' !== $raw_body ) {

			$inputs['BODY'] = mb_substr( $raw_body, 0, 8192 );
		}

		foreach ( array( 'HTTP_USER_AGENT', 'HTTP_REFERER', 'HTTP_X_FORWARDED_FOR', 'REQUEST_URI' ) as $server_key ) {
			if ( ! empty( $_SERVER[ $server_key ] ) ) {
				$inputs[ 'HEADER:' . $server_key ] = stripslashes( (string) $_SERVER[ $server_key ] ); // phpcs:ignore
			}
		}

		return $inputs;
	}

	protected static function flatten( $prefix, $value, array &$out, $depth = 0 ) {
		if ( $depth > 3 ) { 
			return;
		}
		if ( is_array( $value ) ) {
			foreach ( $value as $k => $v ) {
				self::flatten( $prefix . '.' . $k, $v, $out, $depth + 1 );
			}
			return;
		}
		if ( is_string( $value ) ) {
			$out[ $prefix ] = stripslashes( $value );
		}
	}

	public static function client_ip() {

		return isset( $_SERVER['REMOTE_ADDR'] ) ? (string) $_SERVER['REMOTE_ADDR'] : ''; // phpcs:ignore
	}
}

}