Move all files under /app to typescript

app/sql_channel.ts

@@ -0,0 +1,57 @@
+// Copyright 2018-2020 Signal Messenger, LLC
+// SPDX-License-Identifier: AGPL-3.0-only
+
+import { ipcMain } from 'electron';
+
+import { remove as removeUserConfig } from './user_config';
+import { remove as removeEphemeralConfig } from './ephemeral_config';
+
+type SQLType = {
+  sqlCall(callName: string, args: ReadonlyArray<unknown>): unknown;
+};
+
+let sql: SQLType | undefined;
+
+let initialized = false;
+
+const SQL_CHANNEL_KEY = 'sql-channel';
+const ERASE_SQL_KEY = 'erase-sql-key';
+
+export function initialize(mainSQL: SQLType): void {
+  if (initialized) {
+    throw new Error('sqlChannels: already initialized!');
+  }
+  initialized = true;
+
+  sql = mainSQL;
+
+  ipcMain.on(SQL_CHANNEL_KEY, async (event, jobId, callName, ...args) => {
+    try {
+      if (!sql) {
+        throw new Error(`${SQL_CHANNEL_KEY}: Not yet initialized!`);
+      }
+      const result = await sql.sqlCall(callName, args);
+      event.sender.send(`${SQL_CHANNEL_KEY}-done`, jobId, null, result);
+    } catch (error) {
+      const errorForDisplay = error && error.stack ? error.stack : error;
+      console.log(
+        `sql channel error with call ${callName}: ${errorForDisplay}`
+      );
+      if (!event.sender.isDestroyed()) {
+        event.sender.send(`${SQL_CHANNEL_KEY}-done`, jobId, errorForDisplay);
+      }
+    }
+  });
+
+  ipcMain.on(ERASE_SQL_KEY, async event => {
+    try {
+      removeUserConfig();
+      removeEphemeralConfig();
+      event.sender.send(`${ERASE_SQL_KEY}-done`);
+    } catch (error) {
+      const errorForDisplay = error && error.stack ? error.stack : error;
+      console.log(`sql-erase error: ${errorForDisplay}`);
+      event.sender.send(`${ERASE_SQL_KEY}-done`, error);
+    }
+  });
+}