<?php

// Electrum Helper
class AGC_Electrum {
	
	public static function create_electrum_address($cryptoId, $mpk, $index) {
		$version = self::get_mpk_version($mpk);

		if (self::is_valid_mpk($mpk)) {
			return ElectrumHelper::mpk_to_bc_address($cryptoId, $mpk, $index, $version);	
		}

		throw new \Exception('Invalid MPK, use Legacy version in Electrum to create your secure addresses via Master Public Key.');
	}

	public static function is_valid_mpk($mpk) {
		$mpkStart = substr($mpk, 0, 16);
		AGC_Util::log(__FILE__, __LINE__, 'xpub661MyMwAqRbc vs ' . $mpkStart);
		$validMpk = strlen($mpk) > 55 && $mpkStart === 'xpub661MyMwAqRbc';
		AGC_Util::log(__FILE__, __LINE__, 'valid mpk: ' . $validMpk);
		return $validMpk;
	}	

	public static function get_mpk_version($mpk) {

		if ($mpk[0] === 'x') {
			return 2;
		}
		else {
			return 1;
		}
	}	
}

?>