init

router/router.go

@@ -0,0 +1,49 @@
+package router
+
+import (
+	"encoding/json"
+	"fmt"
+	"net/http"
+)
+
+type router struct {
+	mux *http.ServeMux
+}
+
+func (router *router) Mux() *http.ServeMux {
+	return router.mux
+}
+
+func (router *router) MsgError(msg string, err error) string {
+	m := msg
+	if err != nil {
+		m = fmt.Sprintf("%s: %v", msg, err)
+	}
+	return m
+}
+
+func (router *router) SendJSON(w http.ResponseWriter, data any) error {
+	w.Header().Set("Content-Type", "application/json")
+	if err := json.NewEncoder(w).Encode(data); err != nil {
+		return fmt.Errorf("something bad happened: %v", err)
+	}
+	return nil
+}
+
+func (router *router) Handle(pattern string, handler func(w http.ResponseWriter, r *http.Request) error) {
+	router.mux.HandleFunc(pattern, func(w http.ResponseWriter, r *http.Request) {
+		if err := handler(w, r); err != nil {
+			router.SendJSON(w, struct {
+				Error string `json:"error"`
+			}{
+				Error: err.Error(),
+			})
+		}
+	})
+}
+
+func New() *router {
+	return &router{
+		mux: http.NewServeMux(),
+	}
+}