1 files changed, 58 insertions, 0 deletions
diff --git a/packages/taler-wallet-core/src/types/schemacore.ts b/packages/taler-wallet-core/src/types/schemacore.ts
new file mode 100644
index 000000000..820f68d18
--- /dev/null
+++ b/packages/taler-wallet-core/src/types/schemacore.ts
@@ -0,0 +1,58 @@
+/*
+ This file is part of GNU Taler
+ (C) 2019 Taler Systems S.A.
+
+ GNU Taler is free software; you can redistribute it and/or modify it under the
+ terms of the GNU General Public License as published by the Free Software
+ Foundation; either version 3, or (at your option) any later version.
+
+ GNU Taler is distributed in the hope that it will be useful, but WITHOUT ANY
+ WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+ A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License along with
+ GNU Taler; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
+ */
+
+/**
+ * Core of the wallet's schema, used for painless export, import
+ * and schema migration.
+ *
+ * If this schema is extended, it must be extended in a completely
+ * backwards-compatible way.
+ */
+
+interface CoreCoin {
+  exchangeBaseUrl: string;
+  coinPub: string;
+  coinPriv: string;
+  amountRemaining: string;
+}
+
+interface CorePurchase {
+  noncePub: string;
+  noncePriv: string;
+  paySig: string;
+  contractTerms: any;
+}
+
+interface CoreReserve {
+  reservePub: string;
+  reservePriv: string;
+  exchangeBaseUrl: string;
+}
+
+interface SchemaCore {
+  coins: CoreCoin[];
+  purchases: CorePurchase[];
+
+  /**
+   * Schema version (of full schema) of wallet that exported the core schema.
+   */
+  versionExporter: number;
+
+  /**
+   * Schema version of the database that has been exported to the core schema
+   */
+  versionSourceDatabase: number;
+}