bluesky.from_as1: account for … char when trimming facets off the end

for snarfed/bridgy-fed#993, snarfed/bridgy-fed#976

granary/bluesky.py

@@ -656,6 +656,8 @@ def from_as1(obj, out_type=None, blobs=None, client=None):
       # skip or trim this facet if it's off the end of content that got truncated
       index = facet.get('index')
       text_len = len(text.encode())
+      if truncated:
+        text_len -= len('…'.encode())
       if index.get('byteStart', 0) >= text_len:
         continue
       if index.get('byteEnd', 0) > text_len:

granary/tests/test_bluesky.py

@@ -891,6 +891,17 @@ def test_from_as1_html_link(self):
       'content': 'foo <a href="http://post">ba]r</a> baz',
     }))
 
+  @patch.object(Bluesky, 'TRUNCATE_TEXT_LENGTH', 12)
+  def test_from_as1_html_omit_link_facet_after_truncation(self):
+    self.assert_equals({
+      '$type': 'app.bsky.feed.post',
+      'createdAt': '2022-01-02T03:04:05.000Z',
+      'text': 'foo bar…',
+    }, from_as1({
+      'objectType': 'note',
+      'content': 'foo bar <a href="http://post">baaaaaaaz</a>',
+    }))
+
   def test_from_as1_link_mention_hashtag(self):
     self.assert_equals({
       '$type': 'app.bsky.feed.post',