1 files changed, 34 insertions, 0 deletions
diff --git a/auth/config.go b/auth/config.go
new file mode 100644
index 0000000..6a55839
--- /dev/null
+++ b/auth/config.go
@@ -0,0 +1,34 @@
+package auth
+
+import (
+	"encoding/hex"
+	"errors"
+	"os"
+
+	"github.com/martinlehoux/kagamigo/core"
+	"golang.org/x/exp/slog"
+)
+
+var (
+	ErrCookieBadLength = errors.New("cookie secret must be 32 bytes")
+)
+
+type AuthConfig struct {
+	Domain       string
+	CookieSecret []byte
+}
+
+func LoadCookieSecret(cookieSecretString string) []byte {
+	cookiesSecret, err := hex.DecodeString(cookieSecretString)
+	if err != nil {
+		err = core.Wrap(err, "error decoding cookie secret")
+		slog.Error(err.Error())
+		os.Exit(1)
+	}
+	if len(cookiesSecret) != 32 {
+		slog.Error(ErrCookieBadLength.Error())
+		os.Exit(1)
+	}
+	slog.Info("cookie secret loaded")
+	return cookiesSecret
+}