feat: logger, middleware

projects/greenlight/cmd/api/errors.go

@@ -15,14 +15,17 @@ func (app *application) failedValidationResponse(w http.ResponseWriter, r *http.
 // book we'll upgrade this to use structured logging, and record additional information
 // about the request including the HTTP method and URL.
 func (app *application) logError(r *http.Request, err error) {
-	app.logger.Println(err)
+	app.logger.PrintError(err, map[string]string{
+		"request_method": r.Method,
+		"request_url":    r.URL.String(),
+	})
 }
 
 // The errorResponse() method is a generic helper for sending JSON-formatted error
 // messages to the client with a given status code. Note that we're using an interface{}
 // type for the message parameter, rather than just a string type, as this gives us
 // more flexibility over the values that we can include in the response.
-func (app *application) errorResponse(w http.ResponseWriter, r *http.Request, status int, message interface{}) {
+func (app *application) errorResponse(w http.ResponseWriter, r *http.Request, status int, message any) {
 	env := envelope{"error": message}
 
 	// Write the response using the writeJSON() helper. If this happens to return an