mobilizon/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}
alias Mobilizon.Actors.Actor
alias Mobilizon.Discussions.{Comment, Discussion}
alias Mobilizon.Federation.ActivityPub.Actions
alias Mobilizon.GraphQL.API.Comments
alias Mobilizon.Storage.Page
alias Mobilizon.Users.User
import Mobilizon.Web.Gettext
@spec find_discussions_for_actor(Actor.t(), map(), Absinthe.Resolution.t()) ::
{:ok, Page.t(Discussion.t())} | {:error, :unauthenticated}
def find_discussions_for_actor(
%Actor{id: group_id},
%{page: page, limit: limit},
%{
context: %{
current_actor: %Actor{id: actor_id}
}
}
) do
with {:member, true} <- {:member, Actors.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, page, limit)}
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
@spec get_discussion(any(), map(), Absinthe.Resolution.t()) ::
{:ok, Discussion.t()} | {:error, :unauthorized | :discussion_not_found | String.t()}
def get_discussion(_parent, %{id: id}, %{
context: %{
current_actor: %Actor{id: creator_id}
}
}) do
case Discussions.get_discussion(id) do
%Discussion{actor_id: actor_id} = discussion ->
if Actors.member?(creator_id, actor_id) do
{:ok, discussion}
else
{:error, :unauthorized}
end
nil ->
{:error, :discussion_not_found}
end
end
def get_discussion(_parent, %{slug: slug}, %{
context: %{
current_actor: %Actor{id: creator_id}
}
}) do
with %Discussion{actor_id: actor_id} = discussion <-
Discussions.get_discussion_by_slug(slug),
{:member, true} <- {:member, Actors.member?(creator_id, actor_id)} do
{:ok, discussion}
else
nil -> {:error, dgettext("errors", "Discussion not found")}
{:member, false} -> {:error, :unauthorized}
end
end
def get_discussion(_parent, _args, %{
context: %{
current_user: %User{} = _user
}
}),
do:
{:error,
dgettext("errors", "You must provide either an ID or a slug to access a discussion")}
def get_discussion(_parent, _args, _resolution),
do: {:error, dgettext("errors", "You need to be logged-in to access discussions")}
@spec get_comments_for_discussion(Discussion.t(), map(), Absinthe.Resolution.t()) ::
{:ok, Page.t(Discussion.t())}
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
@spec create_discussion(any(), map(), Absinthe.Resolution.t()) ::
{:ok, Discussion.t()}
| {:error, Ecto.Changeset.t() | String.t() | :unauthorized | :unauthenticated}
def create_discussion(
_parent,
%{title: title, text: text, actor_id: group_id},
%{
context: %{
current_actor: %Actor{id: creator_id}
}
}
) do
if Actors.member?(creator_id, group_id) do
case Comments.create_discussion(%{
title: title,
text: text,
actor_id: group_id,
creator_id: creator_id,
attributed_to_id: group_id
}) do
{:ok, _activity, %Discussion{} = discussion} ->
{:ok, discussion}
{:error, %Ecto.Changeset{} = err} ->
{:error, err}
{:error, _err} ->
{:error, dgettext("errors", "Error while creating a discussion")}
end
else
{:error, :unauthorized}
end
end
def create_discussion(_, _, _), do: {:error, :unauthenticated}
@spec reply_to_discussion(any(), map(), Absinthe.Resolution.t()) ::
{:ok, Discussion.t()} | {:error, :discussion_not_found | :unauthenticated}
def reply_to_discussion(
_parent,
%{text: text, discussion_id: discussion_id},
%{
context: %{
current_actor: %Actor{id: creator_id}
}
}
) do
with {: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.member?(creator_id, actor_id)},
{:ok, _activity, %Discussion{} = discussion} <-
Comments.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
}) do
{:ok, discussion}
else
{:no_discussion, _} ->
{:error, :discussion_not_found}
end
end
def reply_to_discussion(_, _, _), do: {:error, :unauthenticated}
@spec update_discussion(map(), map(), map()) ::
{:ok, Discussion.t()} | {:error, :unauthorized | :unauthenticated}
def update_discussion(
_parent,
%{title: title, discussion_id: discussion_id},
%{
context: %{
current_actor: %Actor{id: creator_id}
}
}
) do
with {:no_discussion, %Discussion{actor_id: actor_id} = discussion} <-
{:no_discussion, Discussions.get_discussion(discussion_id)},
{:member, true} <- {:member, Actors.member?(creator_id, actor_id)},
{:ok, _activity, %Discussion{} = discussion} <-
Actions.Update.update(
discussion,
%{
title: title
}
) do
{:ok, discussion}
else
{:member, false} ->
{:error, :unauthorized}
{:error, %Ecto.Changeset{} = err} ->
{:error, err}
end
end
def update_discussion(_, _, _), do: {:error, :unauthenticated}
@spec delete_discussion(any(), map(), Absinthe.Resolution.t()) ::
{:ok, Discussion.t()} | {:error, String.t() | :unauthorized | :unauthenticated}
def delete_discussion(_parent, %{discussion_id: discussion_id}, %{
context: %{
current_user: %User{},
current_actor: %Actor{id: creator_id} = actor
}
}) do
with {:no_discussion, %Discussion{actor_id: actor_id} = discussion} <-
{:no_discussion, Discussions.get_discussion(discussion_id)},
{:member, true} <- {:member, Actors.member?(creator_id, actor_id)},
{:ok, _activity, %Discussion{} = discussion} <-
Actions.Delete.delete(discussion, actor) do
{:ok, discussion}
else
{:no_discussion, _} ->
{:error, dgettext("errors", "No discussion with ID %{id}", id: discussion_id)}
{:member, _} ->
{:error, :unauthorized}
end
end
def delete_discussion(_, _, _), do: {:error, :unauthenticated}
end