ch3.4

cmd/api/healthcheck.go

@@ -5,12 +5,14 @@ import (
 )
 
 func (app *application) healthcheckHandler(w http.ResponseWriter, r *http.Request) {
-	data := map[string]string{
+	env := envelope{
 		"status": "available",
+		"system_info": map[string]string{
 			"environment": app.config.env,
 			"version":     version,
+		},
 	}
-	err := app.writeJSON(w, http.StatusOK, data, nil)
+	err := app.writeJSON(w, http.StatusOK, env, nil)
 	if err != nil {
 		app.logger.Print(err)
 		http.Error(w, "The server encountered a problem and could not process your request", http.StatusInternalServerError)

cmd/api/helpers.go

@@ -9,6 +9,8 @@ import (
 	"github.com/julienschmidt/httprouter"
 )
 
+type envelope map[string]any
+
 func (app *application) readIDParam(r *http.Request) (int64, error) {
 	params := httprouter.ParamsFromContext(r.Context())
 
@@ -19,8 +21,8 @@ func (app *application) readIDParam(r *http.Request) (int64, error) {
 	return id, nil
 }
 
-func (app *application) writeJSON(w http.ResponseWriter, status int, data any, headers http.Header) error {
+func (app *application) writeJSON(w http.ResponseWriter, status int, data envelope, headers http.Header) error {
-	js, err := json.Marshal(data)
+	js, err := json.MarshalIndent(data, "", "\t")
 	if err != nil {
 		return err
 	}

cmd/api/movies.go

@@ -28,7 +28,7 @@ func (app *application) showMovieHandler(w http.ResponseWriter, r *http.Request)
 		Version:   1,
 	}
 
-	err = app.writeJSON(w, http.StatusOK, movie, nil)
+	err = app.writeJSON(w, http.StatusOK, envelope{"movie": movie}, nil)
 	if err != nil {
 		app.logger.Print(err)
 		http.Error(w, "The server encountered a problem and could not process your request", http.StatusInternalServerError)