User.enable_protocol: fill in real welcome DM message

for #1024, #966, etc

models.py

@@ -502,11 +502,17 @@ def enable():
             if to_proto.LABEL in ids.COPIES_PROTOCOLS and not user.get_copy(to_proto):
                 to_proto.create_for(user)
 
-        enable()
+            return user
+
+        self_with_copy = enable()
         add(self.enabled_protocols, to_proto.LABEL)
 
         if added:
-            to_proto.bot_dm(to_user=self, text='hello world')
+            handle = self.handle_as(to_proto)
+            if url := to_proto.bridged_web_url_for(self_with_copy):
+                handle = f'<a href="{url}">{handle}</a>'
+            to_proto.bot_dm(to_user=self, text=f"""\
+Welcome to Bridgy Fed! Your account will soon be bridged to {to_proto.PHRASE} at {handle}. <a href="https://fed.brid.gy/docs">See the docs</a> and <a href="https://{common.PRIMARY_DOMAIN}{self.user_page_path()}">your user page</a> for more information. To disable this and delete your bridged profile, block this account.""")
 
         msg = f'Enabled {to_proto.LABEL} for {self.key.id()} : {self.user_page_path()}'
         logger.info(msg)

tests/test_integrations.py

@@ -396,12 +396,13 @@ def test_activitypub_follow_bsky_bot_user_enables_protocol(self, mock_get, mock_
         # bot user DM
         args, kwargs = mock_post.call_args_list[1]
         self.assert_equals(('http://inst/inbox',), args)
+        message = '<p>Welcome to Bridgy Fed! Your account will soon be bridged to Bluesky at <a href="https://bsky.app/profile/alice.inst.ap.brid.gy">alice.inst.ap.brid.gy</a>. <a href="https://fed.brid.gy/docs">See the docs</a> and <a href="https://fed.brid.gy/ap/@alice@inst">your user page</a> for more information. To disable this and delete your bridged profile, block this account.</p>'
         self.assert_equals({
             'type': 'Note',
             'id': 'https://bsky.brid.gy/r/https://bsky.brid.gy/#welcome-dm-https://inst/alice-2022-01-02T03:04:05+00:00',
             'actor': 'https://bsky.brid.gy/bsky.brid.gy',
-            'content': '<p>hello world</p>',
-            'contentMap': {'en': '<p>hello world</p>'},
+            'content': message,
+            'contentMap': {'en': message},
             'content_is_html': True,
             'to': ['https://inst/alice'],
         }, json_loads(kwargs['data']), ignore=['to', '@context'])
@@ -518,9 +519,24 @@ def test_atproto_follow_ap_bot_user_enables_protocol(self, mock_get, mock_post):
                 'convoId': 'convo123',
                 'message': {
                     '$type': 'chat.bsky.convo.defs#messageInput',
-                    'text': 'hello world',
+                    'text': 'Welcome to Bridgy Fed! Your account will soon be bridged to the fediverse at @[email protected]. See the docs and your user page for more information. To disable this and delete your bridged profile, block this account.',
+                    'facets': [{
+                        '$type': 'app.bsky.richtext.facet',
+                        'index': {'byteStart': 102, 'byteEnd': 114},
+                        'features': [{
+                            '$type': 'app.bsky.richtext.facet#link',
+                            'uri': 'https://fed.brid.gy/docs',
+                        }],
+                    }, {
+                        '$type': 'app.bsky.richtext.facet',
+                        'index': {'byteStart': 119, 'byteEnd': 133},
+                        'features': [{
+                            '$type': 'app.bsky.richtext.facet#link',
+                            'uri': 'https://fed.brid.gy/bsky/alice.com',
+                        }],
+                    }],
                     'createdAt': '2022-01-02T03:04:05.000Z',
-                    'bridgyOriginalText': 'hello world',
+                    'bridgyOriginalText': 'Welcome to Bridgy Fed! Your account will soon be bridged to the fediverse at @[email protected]. <a href="https://fed.brid.gy/docs">See the docs</a> and <a href="https://fed.brid.gy/bsky/alice.com">your user page</a> for more information. To disable this and delete your bridged profile, block this account.',
                     'bridgyOriginalUrl': 'https://ap.brid.gy/#welcome-dm-did:plc:alice-2022-01-02T03:04:05+00:00',
                 },
             }, data=None, headers=headers)