Fix Query String Parameters Being Ignored (#11)

* Put query string into the path for OpenAPIGenerator code

* minor comments and formatting changes

---------

Co-authored-by: Sébastien Stormacq <[email protected]>

Author: emlynmu

Sources/HttpApi/APIGatewayV2+HTTPRequest.swift

@@ -18,13 +18,18 @@ import OpenAPIRuntime
 
 extension APIGatewayV2Request {
 
+    // OpenAPIGenerator expects the path to include the query string
+    var pathWithQueryString: String {
+        rawPath + (rawQueryString.isEmpty ? "" : "?\(rawQueryString)")
+    }
+
     /// Return an `HTTPRequest` for this `APIGatewayV2Request`
     public func httpRequest() throws -> HTTPRequest {
         HTTPRequest(
             method: self.context.http.method,
             scheme: "https",
             authority: "",
-            path: self.rawPath,
+            path: pathWithQueryString,
             headerFields: self.headers.httpFields()
         )
     }

Sources/Router/OpenAPILambdaRouterTrie.swift

@@ -101,7 +101,8 @@ struct URIPath: URIPathCollection {
         }
 
         // search for each path component.  If a component is not found, it might be a parameter
-        let pathComponents = path.split(separator: "/")
+        // stop at the start of the query string
+        let pathComponents = path.prefix(while: { $0 != "?" }).split(separator: "/")
         var currentNode = nodeHTTP
         for component in pathComponents {
             if let child = currentNode.child(with: component) {

Tests/OpenAPILambdaTests/Router/RouterGraphTest.swift

@@ -328,19 +328,31 @@ struct RouterGraphTests {
         #expect(handler != nil)
     }
 
-    @Test("Find handler 2")
-    func testFindHandler2() throws {
+    @Test(
+        "Find handler 2",
+        arguments: [
+            "/element3/value1/element4",
+            "/element3/value2/element4",
+            "/element3/value1/element4?param1=value1",
+        ]
+    )
+    func testFindHandler2(
+        pathToTest: String
+    ) throws {
         // given
         let strMethod = "GET"
         let method = HTTPRequest.Method(strMethod)!
         let graph = prepareGraphForFind(for: method)
-        let pathToTest = "/element3/value1/element4"
 
         //when
-        #expect(throws: Never.self) { try graph.find(method: method, path: pathToTest) }
-        let (handler, metadata) = try graph.find(method: method, path: pathToTest)
-        #expect(metadata.count == 1)
-        #expect(handler != nil)
+        #expect(throws: Never.self) {
+            let (handler, metadata) = try graph.find(method: method, path: pathToTest)
+
+            // then (we can not test if the query string param have been decoded, that's the job of the openapi runtime.)
+            #expect(metadata.count == 1)
+            #expect(handler != nil)
+        }
+
     }
 
     @Test("Find handler 3")