[pos] Implement new refund API (untested since there is no wallet support)

Also do a bit of code cleanup and minor refactorings

This also removes the volley HTTP library which is not needed anymore

1 files changed, 12 insertions, 0 deletions

diff --git a/merchant-lib/src/main/java/net/taler/merchantlib/MerchantApi.kt b/merchant-lib/src/main/java/net/taler/merchantlib/MerchantApi.kt
index 96892f5..c92d4d2 100644
--- a/merchant-lib/src/main/java/net/taler/merchantlib/MerchantApi.kt
+++ b/merchant-lib/src/main/java/net/taler/merchantlib/MerchantApi.kt
@@ -72,6 +72,18 @@ class MerchantApi(private val httpClient: HttpClient) {
         } as OrderHistory
     }
 
+    suspend fun giveRefund(
+        merchantConfig: MerchantConfig,
+        orderId: String,
+        request: RefundRequest
+    ): Response<RefundResponse> = response {
+        httpClient.post(merchantConfig.urlFor("private/orders/$orderId/refund")) {
+            header(Authorization, "ApiKey ${merchantConfig.apiKey}")
+            contentType(Json)
+            body = request
+        } as RefundResponse
+    }
+
 }
 
 fun getDefaultHttpClient(): HttpClient = HttpClient(OkHttp) {