chore: #123 unify metrics, logs, variable names and structure

middleware/cors.go

@@ -2,6 +2,7 @@ package middleware
 
 import (
 	"log"
+	"log/slog"
 	"net/http"
 	"os"
 )
@@ -11,12 +12,11 @@ func EnableCors(next http.Handler) http.Handler {
 	if base_url == "" {
 		log.Fatal("BASE_URL is not set")
 	}
-	log.Println("BASE_URL is", base_url)
+	slog.Info("BASE_URL is " + base_url)
 
 	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		w.Header().Set("Access-Control-Allow-Origin", base_url)
 		w.Header().Set("Access-Control-Allow-Methods", "GET, POST, DELETE")
-		w.Header().Set("Access-Control-Allow-Headers", "Authorization")
 
 		if r.Method == "OPTIONS" {
 			w.WriteHeader(http.StatusOK)