This commit adds a setting where the user can choose to hide notes with
a #nsfw hashtag. This setting was implemented to allow users to filter
out adult or other unsafe content.
I moved the code logic for content filtering into a new file, and
defined a protocol for content filters. Although the logic is still
simple, this might help in developing a flexible API in case we have
more complex filtering needs in the future.
I also modified the name of the "Appearance" setting to "Appearance and
filters", to make it easier for users to intuitively find this setting.
(Note: Re-translations of this string might be necessary)
**PASS**
**iOS:**
- iOS 17.0 (iPhone 14 Pro)
**Damus:** (This commit)
**Steps:**
1. Follow another account that you control (Account B)
2. On account B, post a note saying "#test this is a test". This note should show up on the home feed.
3. On account B, post a note saying "#nsfw this is a test". This note should NOT show up on the home feed
4. Go to settings and disable the NSFW filter. Go back to the home view. The #nsfw post should now show up.
5. Close app and reopen. NSFW post should still show up (i.e. Setting should be persistent)
6. Unfollow account B
7. Close app and reopen.
8. Follow the "#grownostr" hashtag
9. Turn on the NSFW filter
10. On account B, post a note saying "#grownostr this is a test". This note should show up on the home view.
11. On account B, post a note saying "#grownostr #nsfw this is a test". This note should NOT show up.
12. Double-check the "notes and replies" tab. Note should NOT show up there either.
12. Turn off NSFW filter
13. Note from step 11 should now show up.
14. Go to Universe view and find a post with a hashtag. Remember where the post is.
14. Locally change the tag keyword from "nsfw" to that hashtag (Note: I had to test this way because my posts were not showing up in the Universe view)
15. Turn off the filter. Check post is there, in the Universe view.
16. Turn on the filter. Check post is no longer there in the Universe view. (Check the neighboring posts are the same, to make sure)
17. Bring back the code to its normal state.
18. Search for "#nsfw". Make sure that #nsfw appears (I believe this is ok, because it means the person is purposefully searching for it)
Closes: https://github.com/damus-io/damus/issues/1412
Changelog-Added: Add "Do not show #nsfw tagged posts" setting
Signed-off-by: Daniel D’Aquino <daniel@daquino.me>
Signed-off-by: William Casarin <jb55@jb55.com>
49283f2bb2