ch3.2

cmd/api/healthcheck.go

@@ -1,12 +1,18 @@
 package main
 
 import (
-	"fmt"
 	"net/http"
 )
 
 func (app *application) healthcheckHandler(w http.ResponseWriter, r *http.Request) {
-	fmt.Fprintln(w, "status: available")
-	fmt.Fprintf(w, "environment: %s\n", app.config.env)
-	fmt.Fprintf(w, "version: %s\n", version)
+	data := map[string]string{
+		"status":      "available",
+		"environment": app.config.env,
+		"version":     version,
+	}
+	err := app.writeJSON(w, http.StatusOK, data, 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

@@ -1,6 +1,7 @@
 package main
 
 import (
+	"encoding/json"
 	"errors"
 	"net/http"
 	"strconv"
@@ -17,3 +18,20 @@ 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 {
+	js, err := json.Marshal(data)
+	if err != nil {
+		return err
+	}
+	js = append(js, '\n')
+	for key, value := range headers {
+		w.Header()[key] = value
+	}
+
+	w.Header().Set("Content-Type", "application/json")
+	w.WriteHeader(status)
+	w.Write(js)
+
+	return nil
+}

cmd/api/routes.go

@@ -9,7 +9,7 @@ import (
 func (app *application) routes() *httprouter.Router {
 	router := httprouter.New()
 
-	router.HandlerFunc(http.MethodGet, "/v1/healtcheck", app.healthcheckHandler)
+	router.HandlerFunc(http.MethodGet, "/v1/healthcheck", app.healthcheckHandler)
 	router.HandlerFunc(http.MethodPost, "/v1/movies", app.createMovieHandler)
 	router.HandlerFunc(http.MethodGet, "/v1/movies/:id", app.showMovieHandler)