Process incoming story messages

ts/util/hasAttachmentDownloads.ts

@@ -0,0 +1,89 @@
+// Copyright 2020-2022 Signal Messenger, LLC
+// SPDX-License-Identifier: AGPL-3.0-only
+
+import { partition } from 'lodash';
+import type { MessageAttributesType } from '../model-types.d';
+import { isLongMessage } from '../types/MIME';
+
+// NOTE: If you're modifying this function then you'll likely also need
+// to modify ./queueAttachmentDownloads
+export function hasAttachmentDownloads(
+  message: MessageAttributesType
+): boolean {
+  const attachments = message.attachments || [];
+
+  const [longMessageAttachments, normalAttachments] = partition(
+    attachments,
+    attachment => isLongMessage(attachment.contentType)
+  );
+
+  if (longMessageAttachments.length > 0) {
+    return true;
+  }
+
+  const hasNormalAttachments = normalAttachments.some(attachment => {
+    if (!attachment) {
+      return false;
+    }
+    // We've already downloaded this!
+    if (attachment.path) {
+      return false;
+    }
+    return true;
+  });
+  if (hasNormalAttachments) {
+    return true;
+  }
+
+  const previews = message.preview || [];
+  const hasPreviews = previews.some(item => {
+    if (!item.image) {
+      return false;
+    }
+    // We've already downloaded this!
+    if (item.image.path) {
+      return false;
+    }
+    return true;
+  });
+  if (hasPreviews) {
+    return true;
+  }
+
+  const contacts = message.contact || [];
+  const hasContacts = contacts.some(item => {
+    if (!item.avatar || !item.avatar.avatar) {
+      return false;
+    }
+    if (item.avatar.avatar.path) {
+      return false;
+    }
+    return true;
+  });
+  if (hasContacts) {
+    return true;
+  }
+
+  const { quote } = message;
+  const quoteAttachments = quote && quote.attachments ? quote.attachments : [];
+  const hasQuoteAttachments = quoteAttachments.some(item => {
+    if (!item.thumbnail) {
+      return false;
+    }
+    // We've already downloaded this!
+    if (item.thumbnail.path) {
+      return false;
+    }
+    return true;
+  });
+  if (hasQuoteAttachments) {
+    return true;
+  }
+
+  const { sticker } = message;
+  if (sticker) {
+    return !sticker.data || (sticker.data && !sticker.data.path);
+  }
+
+  return false;
+}