Clean story reply screenshot data

ts/sql/migrations/90-delete-story-reply-screenshot.ts

@@ -0,0 +1,45 @@
+// Copyright 2023 Signal Messenger, LLC
+// SPDX-License-Identifier: AGPL-3.0-only
+
+import type { Database } from '@signalapp/better-sqlite3';
+
+import type { LoggerType } from '../../types/Logging';
+import { sql } from '../util';
+
+export default function updateToSchemaVersion90(
+  currentVersion: number,
+  db: Database,
+  logger: LoggerType
+): void {
+  if (currentVersion >= 90) {
+    return;
+  }
+
+  let numChanges = 0;
+  db.transaction(() => {
+    const [updateQuery, updateParams] = sql`
+        UPDATE messages
+        SET json = json_remove(json, '$.storyReplyContext.attachment.screenshotData')
+        WHERE isStory = 0
+
+        /* we want to find all messages with a non-null storyId, but using string 
+        comparison (instead of a non-null check) here causes Sqlite to use the 
+        storyId index */
+        AND storyId > '0' 
+
+        AND json->'storyReplyContext.attachment.screenshotData' IS NOT NULL;
+    `;
+
+    const info = db.prepare(updateQuery).run(updateParams);
+    numChanges = info.changes;
+
+    db.pragma('user_version = 90');
+  })();
+
+  logger.info(
+    `updateToSchemaVersion90: removed screenshotData from ${numChanges} ` +
+      `message${numChanges > 1 ? 's' : ''}`
+  );
+
+  logger.info('updateToSchemaVersion90: success!');
+}