20190122153157_update_activity_visibility.exs
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20190122153157_update_activity_visibility.exs
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	defmodule Pleroma.Repo.Migrations.UpdateActivityVisibility do
	use Ecto.Migration
	@disable_ddl_transaction true

	def up do
	definition = """
	create or replace function activity_visibility(actor varchar, recipients varchar[], data jsonb) returns varchar as $$
	DECLARE
	fa varchar;
	public varchar := 'https://www.w3.org/ns/activitystreams#Public';
	BEGIN
	SELECT COALESCE(users.follower_address, '') into fa from users where users.ap_id = actor;

	IF data->'to' ? public THEN
	RETURN 'public';
	ELSIF data->'cc' ? public THEN
	RETURN 'unlisted';
	ELSIF ARRAY[fa] && recipients THEN
	RETURN 'private';
	ELSIF not(ARRAY[fa, public] && recipients) THEN
	RETURN 'direct';
	ELSE
	RETURN 'unknown';
	END IF;
	END;
	$$ LANGUAGE plpgsql IMMUTABLE PARALLEL SAFE SECURITY DEFINER;
	"""

	execute(definition)
	end

	def down do
	end
	end