Added stop loss and take profit options for ByBit

README.md

@@ -30,7 +30,7 @@ The script can automatically open a contract on ByBit to long dogecoin with up t
 
 - Set $bybit['enable'] to true in config.inc.php
 - If you do not have an account yet, signup using the referral url: https://www.bybit.com/invite?ref=N617WP for added benefits and a bonus.
-- Make sure your ByBit account has derivate trading enabled and is set to 'unified' mode.
+- Make sure your ByBit account has derivate trading enabled and is set to 'unified' mode. Your default leverage setting will be used so make sure to set that as well.
 - In ByBit go to: API. Create a key with at least the permissions: `Contract - Orders (derivates)` , `Contract - Positions (derivates)` and `Derivates API V3 - Trade` . Update config.inc.php accordingly.
 
 ### Cronjob

config.inc.php

@@ -42,7 +42,7 @@
 $mail['enable'] = false; // Send an e-mail when tweet trigger is met? [true/false]
 
 $mail['to'] = ''; // Send e-mail to this address
-$mail['from'] = ''; // Sender e-mail address, make sure this matches server/smtp to prevent spam marking
+$mail['from'] = ''; // Sender e-mail address. Make sure this matches server/smtp to prevent spam marking
 
 $mail['smtp'] = true; // Set to true to use SMTP, set to false for php mail
 // If smtp is true, configure the following:
@@ -70,5 +70,10 @@
 $bybit['derivate_symbol_to_buy'] = 'DOGEUSDT'; // Symbol to buy
 $bybit['quantity_to_buy'] = 1000;
 
-$bybit['only_buy_if_not_active'] = true; // Only buy if there is no active trade of this ticker. Can prevent double trades.
+// Set to false to only buy if there is no active trade on the symbol yet. Can prevent double trades
+$bybit['only_buy_if_not_active'] = true;
+
+// Stop loss and Take profit. Percentages are the move of the underlying ticker (excluding leverage!)
+$bybit['stop_loss_percentage'] = 5; // Example: '5'. Can be set to false to disable stop loss.
+$bybit['take_profit_percentage'] = 20; // Example: '20'. Can be set to false to disable take profit.
 

libraries/bybit.php

@@ -28,13 +28,47 @@ function bybit_has_open_position($bybit) {
     }
 }
 
+function bybit_get_last_price($bybit) {
+
+    $endpoint = '/derivatives/v3/public/tickers';
+    $method = 'GET';
+    $params = 'category=linear&symbol=' . $bybit['derivate_symbol_to_buy'];
+    $json_response = bybit_request($bybit, $endpoint, $method, $params);
+
+    if ($json_response['retCode'] === 0 &&
+        !empty($json_response['result']['list']) &&
+        !empty($json_response['result']['list'][0]['lastPrice']) &&
+        $json_response['result']['list'][0]['symbol'] == $bybit['derivate_symbol_to_buy']
+    ) {
+        return $json_response['result']['list'][0]['lastPrice'];
+
+    } else {
+        echo '<br /><br />Error checking ticker on ByBit! Please check your configuration.'; exit;
+    }
+}
+
 function bybit_order($bybit) {
 
+    $last_price = null;
+    if (
+        ($bybit['stop_loss_percentage'] !== false && $bybit['stop_loss_percentage'] > 0) ||
+        ($bybit['take_profit_percentage'] !== false && $bybit['take_profit_percentage'] > 0)
+    ) {
+        $last_price = bybit_get_last_price($bybit);
+    }
+
     $endpoint = '/unified/v3/private/order/create';
     $method = 'POST';
     $orderLinkId = uniqid();
     $params = '{"category" : "linear", "symbol" : "' . $bybit['derivate_symbol_to_buy'] . '", "side" : "Buy", "orderType" : "Market", "qty" : "' . $bybit['quantity_to_buy'] . '" , "timeInForce" : "GoodTillCancel" , "orderLinkId" : "' . $orderLinkId . '"}';
 
+    if ($bybit['stop_loss_percentage'] !== false && $bybit['stop_loss_percentage'] > 0) {
+        $params = str_replace('}', ', "stopLoss" : "' . ($last_price - ($last_price / 100 * $bybit['stop_loss_percentage'])) . '"}', $params);
+    }
+    if ($bybit['take_profit_percentage'] !== false && $bybit['take_profit_percentage'] > 0) {
+        $params = str_replace('}', ', "takeProfit" : "' . ($last_price + ($last_price / 100 * $bybit['take_profit_percentage'])) . '"}', $params);
+    }
+
     $json_response = bybit_request($bybit, $endpoint, $method, $params);
 
     if ($json_response['retCode'] === 0 &&