forked from AkkomaGang/akkoma
activitypub: add support for filtering broken threads out of timelines
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3 changed files with 37 additions and 1 deletions
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@ -787,4 +787,37 @@ def visible_for_user?(activity, user) do
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y = activity.data["to"] ++ (activity.data["cc"] || [])
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visible_for_user?(activity, nil) || Enum.any?(x, &(&1 in y))
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end
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# guard
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def entire_thread_visible_for_user?(nil, user), do: false
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# child
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def entire_thread_visible_for_user?(
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%Activity{data: %{"object" => %{"inReplyTo" => _parent_id}}} = tail,
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user
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) do
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parent = Activity.get_in_reply_to_activity(tail)
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visible_for_user?(tail, user) && entire_thread_visible_for_user?(parent, user)
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end
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# root
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def entire_thread_visible_for_user?(tail, user), do: visible_for_user?(tail, user)
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# filter out broken threads
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def contain_broken_threads(%Activity{} = activity, %User{} = user) do
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entire_thread_visible_for_user?(activity, user)
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end
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# do post-processing on a specific activity
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def contain_activity(%Activity{} = activity, %User{} = user) do
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contain_broken_threads(activity, user)
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end
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# do post-processing on a timeline
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def contain_timeline(timeline, user) do
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timeline
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|> Enum.filter(fn activity ->
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contain_activity(activity, user)
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end)
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end
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end
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@ -223,6 +223,7 @@ def home_timeline(%{assigns: %{user: user}} = conn, params) do
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activities =
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ActivityPub.fetch_activities([user.ap_id | user.following], params)
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|> ActivityPub.contain_timeline(user)
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|> Enum.reverse()
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conn
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@ -79,7 +79,9 @@ def friends_timeline(%{assigns: %{user: user}} = conn, params) do
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|> Map.put("blocking_user", user)
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|> Map.put("user", user)
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activities = ActivityPub.fetch_activities([user.ap_id | user.following], params)
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activities =
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ActivityPub.fetch_activities([user.ap_id | user.following], params)
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|> ActivityPub.contain_timeline(user)
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conn
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|> render(ActivityView, "index.json", %{activities: activities, for: user})
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