add csv export

entries/bitwarden_csv.go

@@ -0,0 +1,50 @@
+package entries
+
+import (
+	"encoding/csv"
+	"io"
+)
+
+// WriteBitwardenCSV writes Bitwarden's native CSV interchange format.
+// CSV is intentionally offered alongside JSON because Bitwarden routes the two
+// formats through different importers.
+func WriteBitwardenCSV(w io.Writer, secrets []Secret) error {
+	csvWriter := csv.NewWriter(w)
+
+	if err := csvWriter.Write([]string{
+		"folder",
+		"favorite",
+		"type",
+		"name",
+		"notes",
+		"fields",
+		"reprompt",
+		"login_uri",
+		"login_username",
+		"login_password",
+		"login_totp",
+	}); err != nil {
+		return err
+	}
+
+	for _, secret := range secrets {
+		if err := csvWriter.Write([]string{
+			"",
+			"0",
+			"login",
+			secret.Description,
+			secret.Notes,
+			"",
+			"0",
+			secret.URL,
+			secret.Username,
+			secret.Password,
+			"",
+		}); err != nil {
+			return err
+		}
+	}
+
+	csvWriter.Flush()
+	return csvWriter.Error()
+}