<?php

// Class that communicates with various blockchains via HTTP
class AGC_Blockchain {	

	public static function is_dirty_address($address) {
		$userAgentString = 'Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US) AppleWebKit/534.12 (KHTML, like Gecko) Chrome/9.0.576.0 Safari/534.12';
		
		$request = 'https://blockchain.info/rawaddr/' . $address;	
		error_log('checking to see if ' . $address . ' is dirty.');
		$args = array(
			'user-agent' => $userAgentString
		);
		
		$response = wp_remote_get($request, $args);
		
		if ( is_wp_error( $response ) || $response['response']['code'] !== 200) {
            throw new \Exception( 'Could not reach blockchain.info.' ); 
        }
        
		$totalReceived = (float) json_decode($response['body'])->total_received;
		error_log('address ' . $address . ' has total funds of: ' . $totalReceived);
		return $totalReceived > 0;
	}

	public static function check_address_for_payment($address, $orderAmount,$requiredConfirmations) {
		$userAgentString = 'Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US) AppleWebKit/534.12 (KHTML, like Gecko) Chrome/9.0.576.0 Safari/534.12';
		
		$request = 'https://blockchain.info/q/getreceivedbyaddress/' . $address. '?confirmations=' . $requiredConfirmations;	
		
		$args = array(
			'user-agent' => $userAgentString
		);
		
		$response = wp_remote_get($request, $args);
		
		if ( is_wp_error( $response ) || $response['response']['code'] !== 200) {
            throw new \Exception( 'Could not reach blockchain.info.' ); 
        }
        //error_log(print_r($response, true));
		$totalReceivedSatoshi = (float) json_decode($response['body']);
		$totalReceived = $totalReceivedSatoshi / 100000000;
		$repo = new AGC_MPK_Repo('BTC', '');

		$repo->set_address_total_received($address, $totalReceived);
		$amountToVerify = ((float) $orderAmount) * 0.97;
		error_log('checking ' . $address . ' for payment amount of '. $amountToVerify . '... total received is ' . $totalReceived);

		return $totalReceived > $amountToVerify;
	}
}

?>