fix: refine logging

main.go

@@ -3,6 +3,7 @@ package main
 import (
 	"me-fit/db"
 	"me-fit/handler"
+	"me-fit/log"
 	"me-fit/middleware"
 	"me-fit/service"
 	"me-fit/types"
@@ -10,8 +11,6 @@ import (
 
 	"context"
 	"database/sql"
-	"log"
-	"log/slog"
 	"net/http"
 	"os"
 	"os/signal"
@@ -32,7 +31,7 @@ func main() {
 
 	db, err := sql.Open("sqlite3", "./data.db")
 	if err != nil {
-		log.Fatal("Could not open Database data.db: ", err)
+		log.Fatal("Could not open Database data.db: %v", err)
 	}
 	defer db.Close()
 
@@ -43,7 +42,7 @@ func run(ctx context.Context, db *sql.DB, env func(string) string) {
 	ctx, cancel := signal.NotifyContext(ctx, syscall.SIGINT, syscall.SIGTERM)
 	defer cancel()
 
-	slog.Info("Starting server...")
+	log.Info("Starting server...")
 
 	// init server settings
 	serverSettings := types.NewServerSettingsFromEnv(env)
@@ -51,7 +50,7 @@ func run(ctx context.Context, db *sql.DB, env func(string) string) {
 	// init db
 	err := utils.RunMigrations(db, "")
 	if err != nil {
-		slog.Error("Could not run migrations: " + err.Error())
+		log.Error("Could not run migrations: %v", err)
 		os.Exit(1)
 	}
 
@@ -80,9 +79,9 @@ func run(ctx context.Context, db *sql.DB, env func(string) string) {
 }
 
 func startServer(s *http.Server) {
-	slog.Info("Starting server on " + s.Addr)
+	log.Info("Starting server on %v", s.Addr)
 	if err := s.ListenAndServe(); err != nil && err != http.ErrServerClosed {
-		slog.Error("error listening and serving: " + err.Error())
+		log.Error("error listening and serving: %v", err)
 	}
 }
 
@@ -97,9 +96,9 @@ func shutdownServer(s *http.Server, ctx context.Context, wg *sync.WaitGroup) {
 	shutdownCtx, cancel := context.WithTimeout(shutdownCtx, 10*time.Second)
 	defer cancel()
 	if err := s.Shutdown(shutdownCtx); err != nil {
-		slog.Error("error shutting down http server: " + err.Error())
+		log.Error("error shutting down http server: %v", err)
 	} else {
-		slog.Info("Gracefully stopped http server on " + s.Addr)
+		log.Info("Gracefully stopped http server on %v", s.Addr)
 	}
 }