mobilizon.chapril.org-mobil.../lib/graphql/resolvers/discussion.ex

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defmodule Mobilizon.GraphQL.Resolvers.Discussion do
@moduledoc """
Handles the group-related GraphQL calls.
"""
alias Mobilizon.{Actors, Discussions, Users}
alias Mobilizon.Actors.Actor
alias Mobilizon.Discussions.{Comment, Discussion}
alias Mobilizon.Federation.ActivityPub
alias Mobilizon.Storage.Page
alias Mobilizon.Users.User
def find_discussions_for_actor(
%Actor{id: group_id},
_args,
%{
context: %{
current_user: %User{} = user
}
}
) do
with {:actor, %Actor{id: actor_id} = _actor} <- {:actor, Users.get_actor_for_user(user)},
{:member, true} <- {:member, Actors.is_member?(actor_id, group_id)},
{:ok, %Actor{type: :Group} = group} <- Actors.get_group_by_actor_id(group_id) do
{:ok, Discussions.find_discussions_for_actor(group)}
else
{:member, false} ->
{:ok, %Page{total: 0, elements: []}}
end
end
def find_discussions_for_actor(%Actor{}, _args, _resolution) do
{:ok, %Page{total: 0, elements: []}}
end
def get_discussion(_parent, %{id: id}, %{
context: %{
current_user: %User{} = user
}
}) do
with {:actor, %Actor{id: creator_id} = _actor} <- {:actor, Users.get_actor_for_user(user)},
%Discussion{actor_id: actor_id} = discussion <-
Discussions.get_discussion(id),
{:member, true} <- {:member, Actors.is_member?(creator_id, actor_id)} do
{:ok, discussion}
end
end
def get_discussion(_parent, %{slug: slug}, %{
context: %{
current_user: %User{} = user
}
}) do
with {:actor, %Actor{id: creator_id} = _actor} <- {:actor, Users.get_actor_for_user(user)},
%Discussion{actor_id: actor_id} = discussion <-
Discussions.get_discussion_by_slug(slug),
{:member, true} <- {:member, Actors.is_member?(creator_id, actor_id)} do
{:ok, discussion}
else
nil -> {:error, "No such discussion"}
end
end
def get_discussion(_parent, _args, _resolution),
do: {:error, "You need to be logged-in to access discussions"}
def get_comments_for_discussion(
%Discussion{id: discussion_id},
%{page: page, limit: limit},
_resolution
) do
{:ok, Discussions.get_comments_for_discussion(discussion_id, page, limit)}
end
def create_discussion(
_parent,
%{title: title, text: text, actor_id: actor_id},
%{
context: %{
current_user: %User{} = user
}
}
) do
with {:actor, %Actor{id: creator_id} = _actor} <- {:actor, Users.get_actor_for_user(user)},
{:member, true} <- {:member, Actors.is_member?(creator_id, actor_id)},
{:ok, _activity, %Discussion{} = discussion} <-
ActivityPub.create(
:discussion,
%{
title: title,
text: text,
actor_id: actor_id,
creator_id: creator_id,
attributed_to_id: actor_id
},
true
) do
{:ok, discussion}
end
end
def reply_to_discussion(
_parent,
%{text: text, discussion_id: discussion_id},
%{
context: %{
current_user: %User{} = user
}
}
) do
with {:actor, %Actor{id: creator_id} = _actor} <- {:actor, Users.get_actor_for_user(user)},
{:no_discussion,
%Discussion{
actor_id: actor_id,
last_comment: %Comment{
id: last_comment_id,
origin_comment_id: origin_comment_id,
in_reply_to_comment_id: previous_in_reply_to_comment_id
}
} = _discussion} <-
{:no_discussion, Discussions.get_discussion(discussion_id)},
{:member, true} <- {:member, Actors.is_member?(creator_id, actor_id)},
{:ok, _activity, %Discussion{} = discussion} <-
ActivityPub.create(
:discussion,
%{
text: text,
discussion_id: discussion_id,
actor_id: creator_id,
attributed_to_id: actor_id,
in_reply_to_comment_id: last_comment_id,
origin_comment_id:
origin_comment_id || previous_in_reply_to_comment_id || last_comment_id
},
true
) do
{:ok, discussion}
end
end
@spec update_discussion(map(), map(), map()) :: {:ok, Discussion.t()}
def update_discussion(
_parent,
%{title: title, discussion_id: discussion_id},
%{
context: %{
current_user: %User{} = user
}
}
) do
with {:actor, %Actor{id: creator_id} = _actor} <- {:actor, Users.get_actor_for_user(user)},
{:no_discussion, %Discussion{actor_id: actor_id} = discussion} <-
{:no_discussion, Discussions.get_discussion(discussion_id)},
{:member, true} <- {:member, Actors.is_member?(creator_id, actor_id)},
{:ok, _activity, %Discussion{} = discussion} <-
ActivityPub.update(
discussion,
%{
title: title
}
) do
{:ok, discussion}
end
end
def delete_discussion(_parent, %{discussion_id: discussion_id}, %{
context: %{
current_user: %User{} = user
}
}) do
with {:actor, %Actor{id: creator_id} = actor} <- {:actor, Users.get_actor_for_user(user)},
{:no_discussion, %Discussion{actor_id: actor_id} = discussion} <-
{:no_discussion, Discussions.get_discussion(discussion_id)},
{:member, true} <- {:member, Actors.is_member?(creator_id, actor_id)},
{:ok, _activity, %Discussion{} = discussion} <-
ActivityPub.delete(discussion, actor) do
{:ok, discussion}
else
{:no_discussion, _} ->
{:error, "No discussion with ID #{discussion_id}"}
{:member, _} ->
{:error, "You are not a member of the group the discussion belongs to"}
end
end
end