Add more convenience methods to access request and response data

Author: mduesterhoeft

src/main/kotlin/com/github/mduesterhoeft/router/APIGatewayProxyEventExtensions.kt

@@ -7,10 +7,15 @@ import java.util.Base64
 fun APIGatewayProxyRequestEvent.acceptHeader() = getHeaderCaseInsensitive("accept")
 fun APIGatewayProxyRequestEvent.contentType() = getHeaderCaseInsensitive("content-type")
 
-fun APIGatewayProxyRequestEvent.getHeaderCaseInsensitive(httpHeader: String): String? {
-    return headers.entries
-        .firstOrNull { it.key.toLowerCase() == httpHeader.toLowerCase() }
+fun APIGatewayProxyRequestEvent.getHeaderCaseInsensitive(httpHeader: String): String? =
+    getCaseInsensitive(httpHeader, headers)
+
+fun APIGatewayProxyResponseEvent.getHeaderCaseInsensitive(httpHeader: String): String? =
+    getCaseInsensitive(httpHeader, headers)
+
+private fun getCaseInsensitive(key: String, map: Map<String, String>): String? =
+    map.entries
+        .firstOrNull { it.key.toLowerCase() == key.toLowerCase() }
         ?.value
-}
 
 fun APIGatewayProxyResponseEvent.bodyAsBytes() = Base64.getDecoder().decode(body)

src/main/kotlin/com/github/mduesterhoeft/router/ResponseEntity.kt

@@ -1,13 +1,20 @@
 package com.github.mduesterhoeft.router
 
+import java.net.URI
+
 data class ResponseEntity<T>(
     val statusCode: Int,
     val body: T? = null,
     val headers: Map<String, String> = emptyMap()
 ) {
     companion object {
         fun <T> ok(body: T? = null, headers: Map<String, String> = emptyMap()) =
-            ResponseEntity<T>(200, body, headers
-        )
+            ResponseEntity<T>(200, body, headers)
+
+        fun <T> created(body: T? = null, location: URI, headers: Map<String, String> = emptyMap()) =
+            ResponseEntity<T>(201, body, headers + ("location" to location.toString()))
+
+        fun noContent(headers: Map<String, String> = emptyMap()) =
+            ResponseEntity<Unit>(204, null, headers)
     }
 }