Added OkcoinException

src/DoubleBit/OKCoin/Okcoin.php

@@ -48,6 +48,7 @@ public function __call($name, $arguments)
         if (is_callable($callback)) {
             call_user_func_array($callback, [$endpoint, $original_params, $result]);
         }
+        $result = json_decode($result);
         return $result;
     }
 
@@ -58,7 +59,15 @@ public function callApi($method, $endpoint, $query)
         try {
             $res = $client->request($method, $url);
             if ($res->getStatusCode() != 200) {
-                return false;
+                throw new OkcoinException(null, $res->getStatusCode());
+            }
+            $body = json_decode($res->getBody());
+            if (!isset($body->result) || $body->result == false) {
+                if (isset($body->error_code)) {
+                    throw new OkcoinException(null, $body->error_cde);
+                } else {
+                    throw new OkcoinException(null, 0);
+                }
             }
             return $res->getBody();
         } catch (\GuzzleHttp\Exception\ConnectException $e) {

src/DoubleBit/OKCoin/OkcoinException.php

@@ -0,0 +1,110 @@
+<?php
+
+namespace Doublebit\Okcoin;
+
+class OkcoinException extends \ErrorException
+{
+
+    protected $message = '';
+    protected $code = 0;
+
+
+    protected $codes = [
+        10000 => 'Required field, can not be null',
+        10001 => 'Request frequency too high',
+        10002 => 'System error',
+        10003 => 'Not in reqest list, please try again later',
+        10004 => 'IP not allowed to access the resource',
+        10005 => '\'secretKey\' does not exist',
+        10006 => '\'partner\' does not exist',
+        10007 => 'Signature does not match',
+        10008 => 'Illegal parameter',
+        10009 => 'Order does not exist',
+        10010 => 'Insufficient funds',
+        10011 => 'Amount too low',
+        10012 => 'Only btc_usd ltc_usd supported',
+        10013 => 'Only support https request',
+        10014 => 'Order price must be between 0 and 1,000,000',
+        10015 => 'Order price differs from current market price too much',
+        10016 => 'Insufficient coins balance',
+        10017 => 'API authorization error',
+        10018 => 'borrow amount less than lower limit [usd:100,btc:0.1,ltc:1]',
+        10019 => 'loan agreement not checked',
+        10020 => 'rate cannot exceed 1%',
+        10021 => 'rate cannot less than 0.01%',
+        10023 => 'fail to get latest ticker',
+        10024 => 'balance not sufficient',
+        10025 => 'quota is full, cannot borrow temporarily',
+        10026 => 'Loan (including reserved loan) and margin cannot be withdrawn',
+        10027 => 'Cannot withdraw within 24 hrs of authentication information modification',
+        10028 => 'Withdrawal amount exceeds daily limit',
+        10029 => 'Account has unpaid loan, please cancel/pay off the loan before withdraw',
+        10031 => 'Deposits can only be withdrawn after 6 confirmations',
+        10032 => 'Please enabled phone/google authenticator',
+        10033 => 'Fee higher than maximum network transaction fee',
+        10034 => 'Fee lower than minimum network transaction fee',
+        10035 => 'Insufficient BTC/LTC',
+        10036 => 'Withdrawal amount too low',
+        10037 => 'Trade password not set',
+        10040 => 'Withdrawal cancellation fails',
+        10041 => 'Withdrawal address not approved',
+        10042 => 'Admin password error',
+        10043 => 'Account equity error, withdrawal failure',
+        10044 => 'fail to cancel borrowing order',
+        10047 => 'this function is disabled for sub-account',
+        10048 => 'withdrawal information does not exist',
+        10049 => 'User can not have more than 50 unfilled small orders (amount<0.5BTC)',
+        10050 => 'can\'t cancel more than once',
+        10100 => 'User account frozen',
+        10101 => 'order type is wrong',
+        10102 => 'incorrect ID',
+        10103 => 'the private otc order\'s key incorrect',
+        10216 => 'Non-available API',
+        20001 => 'User does not exist',
+        20002 => 'Account frozen',
+        20003 => 'Account frozen due to liquidation',
+        20004 => 'Contract account frozen',
+        20005 => 'User contract account does not exist',
+        20006 => 'Required field missing',
+        20007 => 'Illegal parameter',
+        20008 => 'Contract account balance is too low',
+        20009 => 'Contract status error',
+        20010 => 'Risk rate ratio does not exist',
+        20011 => 'Risk rate lower than 90% before opening position',
+        20012 => 'Risk rate lower than 90% after opening position',
+        20013 => 'Temporally no counter party price',
+        20014 => 'System error',
+        20015 => 'Order does not exist',
+        20016 => 'Close amount bigger than your open positions',
+        20017 => 'Not authorized/illegal operation',
+        20018 => 'Order price cannot be more than 103% or less than 97% of the previous minute price',
+        20019 => 'IP restricted from accessing the resource',
+        20020 => 'secretKey does not exist',
+        20021 => 'Index information does not exist',
+        20022 => 'Wrong API interface (Cross margin mode shall call cross margin API, fixed margin mode shall call fixed margin API)',
+        20023 => 'Account in fixed-margin mode',
+        20024 => 'Signature does not match',
+        20025 => 'Leverage rate error',
+        20026 => 'API Permission Error',
+        20027 => 'no transaction record',
+        20028 => 'no such contract',
+        20029 => 'Amount is large than available funds',
+        20030 => 'Account still has debts',
+        20038 => 'Due to regulation, this function is not available in the country/region your currently reside in.',
+        20049 => 'Request frequency too high',
+        10060 => 'Your withdrawal has been locked. Please contact support.',
+        10104 => 'Suspicious activities detected. OTC Trading is temporarily disabled!',
+        503 => 'Too many requests (HTTP)',
+        404 => 'Endpoint not found (HTTP)'
+    ];
+
+    public function __construct($message = null, $code = 0, \Exception $previous = null) {
+        if (isset($this->codes[$code])) {
+            $message = $this->codes[$code];
+        } else {
+            $message = 'Unknown error! Code ' . $code;
+        }
+        parent::__construct($message, $code, $previous);
+    }
+
+}