mobilizon/lib/graphql/resolvers/picture.ex

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Elixir
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defmodule Mobilizon.GraphQL.Resolvers.Picture do
@moduledoc """
Handles the picture-related GraphQL calls
"""
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alias Mobilizon.Actors.Actor
alias Mobilizon.{Media, Users}
alias Mobilizon.Media.Picture
alias Mobilizon.Users.User
import Mobilizon.Web.Gettext
@doc """
Get picture for an event
See Mobilizon.Web.Resolvers.Event.create_event/3
"""
def picture(%{picture_id: picture_id} = _parent, _args, _resolution) do
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with {:ok, picture} <- do_fetch_picture(picture_id), do: {:ok, picture}
end
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def picture(%{picture: picture} = _parent, _args, _resolution), do: {:ok, picture}
def picture(_parent, %{id: picture_id}, _resolution), do: do_fetch_picture(picture_id)
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def picture(_parent, _args, _resolution), do: {:ok, nil}
@spec do_fetch_picture(nil) :: {:error, nil}
defp do_fetch_picture(nil), do: {:error, nil}
@spec do_fetch_picture(String.t()) :: {:ok, Picture.t()} | {:error, :not_found}
defp do_fetch_picture(picture_id) do
case Media.get_picture(picture_id) do
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%Picture{id: id, file: file} ->
{:ok,
%{
name: file.name,
url: file.url,
id: id,
content_type: file.content_type,
size: file.size
}}
nil ->
{:error, :not_found}
end
end
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@spec upload_picture(map, map, map) :: {:ok, Picture.t()} | {:error, any}
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def upload_picture(
_parent,
%{file: %Plug.Upload{} = file} = args,
%{context: %{current_user: %User{} = user}}
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) do
with %Actor{id: actor_id} <- Users.get_actor_for_user(user),
{:ok, %{name: _name, url: url, content_type: content_type, size: size}} <-
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Mobilizon.Web.Upload.store(file),
args <-
args
|> Map.put(:url, url)
|> Map.put(:size, size)
|> Map.put(:content_type, content_type),
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{:ok, picture = %Picture{}} <-
Media.create_picture(%{"file" => args, "actor_id" => actor_id}) do
{:ok,
%{
name: picture.file.name,
url: picture.file.url,
id: picture.id,
content_type: picture.file.content_type,
size: picture.file.size
}}
else
{:error, :mime_type_not_allowed} ->
{:error, dgettext("errors", "File doesn't have an allowed MIME type.")}
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error ->
{:error, error}
end
end
def upload_picture(_parent, _args, _resolution), do: {:error, :unauthenticated}
@doc """
Remove a picture that the user owns
"""
@spec remove_picture(map(), map(), map()) ::
{:ok, Picture.t()}
| {:error, :unauthorized}
| {:error, :unauthenticated}
| {:error, :not_found}
def remove_picture(_parent, %{id: picture_id}, %{context: %{current_user: %User{} = user}}) do
with {:picture, %Picture{actor_id: actor_id} = picture} <-
{:picture, Media.get_picture(picture_id)},
{:is_owned, %Actor{} = _actor} <- User.owns_actor(user, actor_id) do
Media.delete_picture(picture)
else
{:picture, nil} -> {:error, :not_found}
{:is_owned, _} -> {:error, :unauthorized}
end
end
def remove_picture(_parent, _args, _resolution), do: {:error, :unauthenticated}
@doc """
Return the total media size for an actor
"""
@spec actor_size(map(), map(), map()) ::
{:ok, integer()} | {:error, :unauthorized} | {:error, :unauthenticated}
def actor_size(%Actor{id: actor_id}, _args, %{
context: %{current_user: %User{} = user}
}) do
if can_get_actor_size?(user, actor_id) do
{:ok, Media.media_size_for_actor(actor_id)}
else
{:error, :unauthorized}
end
end
def actor_size(_parent, _args, _resolution), do: {:error, :unauthenticated}
@doc """
Return the total media size for a local user
"""
@spec user_size(map(), map(), map()) ::
{:ok, integer()} | {:error, :unauthorized} | {:error, :unauthenticated}
def user_size(%User{id: user_id}, _args, %{
context: %{current_user: %User{} = logged_user}
}) do
if can_get_user_size?(logged_user, user_id) do
{:ok, Media.media_size_for_user(user_id)}
else
{:error, :unauthorized}
end
end
def user_size(_parent, _args, _resolution), do: {:error, :unauthenticated}
@spec can_get_user_size?(User.t(), integer()) :: boolean()
defp can_get_actor_size?(%User{role: role} = user, actor_id) do
role in [:moderator, :administrator] || owns_actor?(User.owns_actor(user, actor_id))
end
@spec owns_actor?({:is_owned, Actor.t() | nil}) :: boolean()
defp owns_actor?({:is_owned, %Actor{} = _actor}), do: true
defp owns_actor?({:is_owned, _}), do: false
@spec can_get_user_size?(User.t(), integer()) :: boolean()
defp can_get_user_size?(%User{role: role, id: logged_user_id}, user_id) do
user_id == logged_user_id || role in [:moderator, :administrator]
end
end