chores: refactor struct and structure project

internal/utilities/utils/get_token.go

@@ -0,0 +1,30 @@
+package utils
+
+import (
+	"fmt"
+	"net/http"
+	"strings"
+)
+
+const SessionHeader = "Authorization"
+
+func GetToken(r *http.Request) (string, error) {
+	token := getTokenFromHeader(r)
+
+	if token == "" {
+		return "", fmt.Errorf("token not found")
+	}
+
+	return token, nil
+}
+
+func getTokenFromHeader(r *http.Request) string {
+	session := r.Header.Get(SessionHeader)
+	arr := strings.Split(session, " ")
+
+	if len(arr) != 2 || strings.ToUpper(arr[0]) != "BEARER" {
+		return ""
+	}
+
+	return arr[1]
+}