mobilizon/lib/mobilizon/followed_group_activity.ex

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defmodule Mobilizon.FollowedGroupActivity do
@moduledoc """
Provide recent elements from groups that profiles follow
"""
import Ecto.Query
alias Mobilizon.Actors.{Actor, Follower, Member}
alias Mobilizon.Events.{Event, Participant}
alias Mobilizon.Storage.Page
def user_followed_group_events(user_id, page \\ nil, limit \\ nil) do
Event
|> distinct([e], e.id)
|> join(:left, [e], p in Participant, on: e.id == p.event_id)
|> join(:inner, [_e, p], pa in Actor, on: p.actor_id == pa.id)
|> join(:inner, [e], g in Actor, on: e.attributed_to_id == g.id)
|> join(:left, [_e, _p, _pa, g], f in Follower, on: g.id == f.target_actor_id)
|> join(:left, [_e, _p, _pa, g], m in Member, on: g.id == m.parent_id)
|> join(:inner, [_e, _p, pa, _g, f, m], a in Actor,
on: a.id == f.actor_id or a.id == m.actor_id
)
|> where(
[e, p, pa, _g, f, m, a],
e.begins_on > ^DateTime.utc_now() and
(f.approved or m.role in ^[:member, :moderator, :administrator, :creator]) and
a.user_id == ^user_id and
pa.user_id != ^user_id
)
|> preload([
:organizer_actor,
:attributed_to,
:tags,
:physical_address,
:picture
])
|> select([e, g, _f, _m, a], [
e,
g,
a
])
|> Page.build_page(page, limit)
end
end