init

web/app/errors.go

@@ -0,0 +1,33 @@
+package app
+
+import (
+	"net/http"
+
+	"github.com/go-chi/render"
+)
+
+// WriteError writes an error message to w.
+// If one or more messages are passed, a JSON response is also sent,
+// with the first message becoming `error` and the second becoming `error_description`.
+func (a *App) WriteError(w http.ResponseWriter, r *http.Request, status int, messages ...string) {
+	render.Status(r, status)
+
+	switch len(messages) {
+	case 0:
+		return
+	case 1:
+		render.JSON(w, r, errorMessage{
+			Error: messages[0],
+		})
+	default:
+		render.JSON(w, r, errorMessage{
+			Error:            messages[0],
+			ErrorDescription: messages[1],
+		})
+	}
+}
+
+type errorMessage struct {
+	Error            string `json:"error"`
+	ErrorDescription string `json:"error_description,omitempty"`
+}