prepare for schema migrations

2 files changed, 93 insertions, 0 deletions

diff --git a/src/types/dbTypes.ts b/src/types/dbTypes.ts
index a289eeb44..f8f9880dd 100644
--- a/src/types/dbTypes.ts
+++ b/src/types/dbTypes.ts
@@ -1366,6 +1366,34 @@ export interface BankWithdrawUriRecord {
   reservePub: string;
 }
 
+export const enum ImportPayloadType {
+  CoreSchema = "core-schema",
+}
+
+/**
+ * Record to keep track of data imported into the wallet.
+ */
+export class WalletImportRecord {
+  /**
+   * Unique ID to reference this import record.
+   */
+  walletImportId: string;
+
+  /**
+   * When was the data imported?
+   */
+  timestampImportStarted: Timestamp;
+
+  timestampImportFinished: Timestamp | undefined;
+
+  payloadType: ImportPayloadType;
+
+  /**
+   * The actual data to import.
+   */
+  payload: any;
+}
+
 /* tslint:disable:completed-docs */
 
 /**
@@ -1517,6 +1545,12 @@ export namespace Stores {
     }
   }
 
+  class WalletImportsStore extends Store<WalletImportRecord> {
+    constructor() {
+      super("walletImports", { keyPath: "walletImportId" });
+    }
+  }
+
   export const coins = new CoinsStore();
   export const coinsReturns = new Store<CoinsReturnRecord>("coinsReturns", {
     keyPath: "contractTermsHash",
@@ -1539,6 +1573,7 @@ export namespace Stores {
   export const payEvents = new PayEventsStore();
   export const reserveUpdatedEvents = new ReserveUpdatedEventsStore();
   export const exchangeUpdatedEvents = new ExchangeUpdatedEventsStore();
+  export const walletImports = new WalletImportsStore();
 }
 
 /* tslint:enable:completed-docs */
diff --git a/src/types/schemacore.ts b/src/types/schemacore.ts
new file mode 100644
index 000000000..c709e3d7a
--- /dev/null
+++ b/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;
+}
\ No newline at end of file