안드로이드 인 앱 결제 - 방어코드 추가

src/main/kotlin/kr/co/vividnext/sodalive/can/charge/ChargeService.kt

@@ -269,10 +269,21 @@ class ChargeService(
                     productId,
                     purchaseToken
                 )
-                charge.payment!!.status = PaymentStatus.COMPLETE
-                member.charge(charge.chargeCan, 0, "aos")
 
-                return true
+                val response = androidPublisher.purchases().products()
+                    .get("kr.co.vividnext.sodalive", productId, purchaseToken)
+                    .execute() ?: throw SodaException("결제정보에 오류가 있습니다.")
+
+                if (response.consumptionState == 1) {
+                    charge.payment!!.status = PaymentStatus.COMPLETE
+                    member.charge(charge.chargeCan, 0, "aos")
+
+                    return true
+                } else {
+                    attempt += 1
+                    Thread.sleep(delay)
+                    delay *= 2
+                }
             } catch (e: Exception) {
                 lastError = e
                 attempt += 1
@@ -280,6 +291,7 @@ class ChargeService(
                 delay *= 2
             }
         }
+
         lastError?.printStackTrace()
         return false
     }