init.

respose.go

@@ -0,0 +1,31 @@
+package main
+
+import (
+	"encoding/json"
+	"net/http"
+)
+
+type Result[T any] struct {
+	Code    int    `json:"code"`
+	Message string `json:"message"`
+	Data    *T     `json:"data,omitempty"`
+}
+
+func writeJSON[T any](w http.ResponseWriter, status int, payload Result[T]) {
+	w.Header().Set("Content-Type", "application/json; charset=utf-8")
+	w.WriteHeader(status)
+	json.NewEncoder(w).Encode(payload)
+}
+
+func ok[T any](w http.ResponseWriter, data *T) {
+	writeJSON(w, http.StatusOK, Result[T]{Code: 0, Message: "OK", Data: data})
+}
+
+func created[T any](w http.ResponseWriter, location string, data *T) {
+	w.Header().Set("Location", location)
+	writeJSON(w, http.StatusCreated, Result[T]{Code: 0, Message: "Created", Data: data})
+}
+
+func fail(w http.ResponseWriter, status int, msg string) {
+	writeJSON[any](w, status, Result[any]{Code: status, Message: msg, Data: nil})
+}