added functions to better analyze payment methods

src/Receipt.php

@@ -109,6 +109,18 @@ public function getPaymentMethods(): array
         return $paymentMethods;
     }
 
+    public function hasPayedCashless(): bool
+    {
+        return preg_match('/Kartenzahlung/', $this->raw_receipt) ||
+            //the following line is just for old receipts which doesn't have "Kartenzahlung" in it
+            (preg_match('/Bezahlung/', $this->raw_receipt) && preg_match('/(VISA|MasterCard|American Express|JCB)/', $this->raw_receipt));
+    }
+
+    public function hasPayedContactless(): bool
+    {
+        return preg_match('/Kontaktlos/', $this->raw_receipt);
+    }
+
     /**
      * @return Carbon
      */

tests/ReceiptParsingTest.php

@@ -37,6 +37,8 @@ public function testBonParsingWeight(): void
         $this->assertEquals(2, $receipt->getCashregisterNr());
         $this->assertEquals(5, $receipt->getEarnedPaybackPoints());
         $this->assertContains("EC-Cash", $receipt->getPaymentMethods());
+        $this->assertTrue( $receipt->hasPayedCashless());
+        $this->assertTrue( $receipt->hasPayedContactless());
         $this->assertEquals(1577880000, $receipt->getTimestamp()->getTimestamp());
         $this->assertEquals(1, $receipt->getPositionByName('BROT')->getPriceSingle());
         $this->assertEquals(0.5, $receipt->getPositionByName('AUFSCHNITT')->getPriceSingle());
@@ -72,6 +74,8 @@ public function testBonParsingPaymentMethods(): void
         $this->assertEquals(22, $receipt->getEarnedPaybackPoints());
         $this->assertContains("BAR", $receipt->getPaymentMethods());
         $this->assertContains("VISA", $receipt->getPaymentMethods());
+        $this->assertTrue($receipt->hasPayedCashless());
+        $this->assertFalse($receipt->hasPayedContactless());
         $this->assertEquals(1577880000, $receipt->getTimestamp()->getTimestamp());
 
         $this->assertEquals(0.25, $receipt->getPositionByName('LEERGUT')->getPriceSingle());