Implement methods and status code into abstraction

main.go

@@ -7,19 +7,55 @@ import (
 	"net/http"
 	"os"
 	"os/signal"
+	"reflect"
 	"syscall"
 	"time"
 )
 
-func http_new_route[T any](route string, handle_func func(request *http.Request) (T)) {
-	http.HandleFunc("/" + route, func(w http.ResponseWriter, r *http.Request) {
-		result, err := json.Marshal(handle_func(r))
+type http_method uint8; const (
+	GET http_method = iota
+	POST
+	PATCH
+	PUT
+	DELETE
+)
+func (method http_method) to_string() string {
+	switch method {
+	case GET:
+		return http.MethodGet
+	case POST:
+		return http.MethodPost
+	case PATCH:
+		return http.MethodPatch
+	case PUT:
+		return http.MethodPut
+	case DELETE:
+		return http.MethodDelete
+	}
+
+	return ""
+}
+
+
+type http_status_code int; const (
+	OK http_status_code = http.StatusOK
+	INTERNAL_SERVER_ERROR http_status_code = http.StatusInternalServerError
+	BAD_REQUEST http_status_code = http.StatusBadRequest
+)
+
+func http_new_route[T any](method http_method, route string, handle_func func(request *http.Request) (T, http_status_code)) {
+	http.HandleFunc(method.to_string() + " /" + route, func(response http.ResponseWriter, request *http.Request) {
+		body, status_code := handle_func(request)
+		result, err := json.Marshal(body)
 		if err != nil {
 			log.Fatal(err)
 		}
+		fmt.Println(reflect.VisibleFields(reflect.TypeOf(body)))
 
-		w.Write(result)
+		response.WriteHeader(int(status_code))
+		response.Write(result)
 	})
+
 }
 
 func main() {
@@ -27,28 +63,27 @@ func main() {
 		Field1 string
 		Field2 http.Header
 	}
-	foo_route_handler := func(request *http.Request) foo_response_body {
-
+	foo_route_handler := func(request *http.Request) (foo_response_body, http_status_code) {
 		fmt.Println(request.Header)
 
 		return foo_response_body{
 			Field1: "hi there on foo!",
 			Field2: request.Header,
-		}
+		}, OK
 	}
-	http_new_route("foo", foo_route_handler)
+	http_new_route(GET, "foo", foo_route_handler)
 
 	type bar_response_body struct {
 		Response int
 		Message string
 	}
-	bar_route_handler := func(request *http.Request) bar_response_body {
+	bar_route_handler := func(request *http.Request) (bar_response_body, http_status_code) {
 		return bar_response_body{
 			Response: 400,
 			Message: "hi there on bar!",
-		}
+		}, INTERNAL_SERVER_ERROR
 	}
-	http_new_route("bar", bar_route_handler)
+	http_new_route(GET, "bar", bar_route_handler)
 
 	http_server := &http.Server{
 		Addr: ":8080",