Moving starting server part into new server.go file. Using the new serve() function from this file into main.go

cmd/api/main.go

@@ -4,13 +4,12 @@ import (
 	"context"
 	"database/sql"
 	"flag"
-	"fmt"
-	"greenlight.craftr.fr/internal/data"
 	"log/slog"
-	"net/http"
 	"os"
 	"time"
 
+	"greenlight.craftr.fr/internal/data"
+
 	// Import the pq driver so that it can register itself with the database/sql package. Note that we alias this import to the blank identifier, to stop the Go compiler complaining that the package isn't being used.
 	_ "github.com/lib/pq"
 )
@@ -104,25 +103,8 @@ func main() {
 		models: data.NewModels(db),
 	}
 
-	/*
-		Declare a HTTP server which listens on the port provided in the config struct,
-		uses the servemux we created above as the handler, has some sensible timeout
-		settings and writes any log messages to the structured logger at Error level.
-	*/
-	srv := &http.Server{
-		Addr:         fmt.Sprintf(":%d", cfg.port),
-		Handler:      app.routes(),
-		IdleTimeout:  time.Minute,
-		ReadTimeout:  5 * time.Second,
-		WriteTimeout: 10 * time.Second,
-		ErrorLog:     slog.NewLogLogger(logger.Handler(), slog.LevelError),
-	}
-
-	// Start the HTTP server.
-	logger.Info("starting server", "addr", srv.Addr, "env", cfg.env)
-
-	// Because the err variable is now already declared in the code above, we need to user = operator here, instead of the := operator.
-	err = srv.ListenAndServe()
+	// Call app.serve() to start the server.
+	err = app.serve()
 	if err != nil {
 		logger.Error(err.Error())
 		os.Exit(1)