91 lines
2.2 KiB
Elixir
91 lines
2.2 KiB
Elixir
defmodule Mobilizon.Media do
|
|
@moduledoc """
|
|
The Media context.
|
|
"""
|
|
|
|
import Ecto.Query
|
|
|
|
alias Ecto.Multi
|
|
|
|
alias Mobilizon.Media.{File, Picture}
|
|
alias Mobilizon.Storage.Repo
|
|
|
|
@doc false
|
|
@spec data :: Dataloader.Ecto.t()
|
|
def data, do: Dataloader.Ecto.new(Repo, query: &query/2)
|
|
|
|
@doc false
|
|
@spec query(Ecto.Query.t(), map) :: Ecto.Query.t()
|
|
def query(queryable, _params), do: queryable
|
|
|
|
@doc """
|
|
Gets a single picture.
|
|
"""
|
|
@spec get_picture(integer | String.t()) :: Picture.t() | nil
|
|
def get_picture(id), do: Repo.get(Picture, id)
|
|
|
|
@doc """
|
|
Gets a single picture.
|
|
Raises `Ecto.NoResultsError` if the picture does not exist.
|
|
"""
|
|
@spec get_picture!(integer | String.t()) :: Picture.t()
|
|
def get_picture!(id), do: Repo.get!(Picture, id)
|
|
|
|
@doc """
|
|
Get a picture by it's URL.
|
|
"""
|
|
@spec get_picture_by_url(String.t()) :: Picture.t() | nil
|
|
def get_picture_by_url(url) do
|
|
url
|
|
|> picture_by_url_query()
|
|
|> Repo.one()
|
|
end
|
|
|
|
@doc """
|
|
Creates a picture.
|
|
"""
|
|
@spec create_picture(map) :: {:ok, Picture.t()} | {:error, Ecto.Changeset.t()}
|
|
def create_picture(attrs \\ %{}) do
|
|
%Picture{}
|
|
|> Picture.changeset(attrs)
|
|
|> Repo.insert()
|
|
end
|
|
|
|
@doc """
|
|
Updates a picture.
|
|
"""
|
|
@spec update_picture(Picture.t(), map) :: {:ok, Picture.t()} | {:error, Ecto.Changeset.t()}
|
|
def update_picture(%Picture{} = picture, attrs) do
|
|
picture
|
|
|> Picture.changeset(attrs)
|
|
|> Repo.update()
|
|
end
|
|
|
|
@doc """
|
|
Deletes a picture.
|
|
"""
|
|
@spec delete_picture(Picture.t()) :: {:ok, Picture.t()} | {:error, Ecto.Changeset.t()}
|
|
def delete_picture(%Picture{} = picture) do
|
|
transaction =
|
|
Multi.new()
|
|
|> Multi.delete(:picture, picture)
|
|
|> Multi.run(:remove, fn _repo, %{picture: %Picture{file: %File{url: url}}} ->
|
|
MobilizonWeb.Upload.remove(url)
|
|
end)
|
|
|> Repo.transaction()
|
|
|
|
case transaction do
|
|
{:ok, %{picture: %Picture{} = picture}} -> {:ok, picture}
|
|
{:error, :remove, error, _} -> {:error, error}
|
|
end
|
|
end
|
|
|
|
@spec picture_by_url_query(String.t()) :: Ecto.Query.t()
|
|
defp picture_by_url_query(url) do
|
|
from(
|
|
p in Picture,
|
|
where: fragment("? @> ?", p.file, ~s|{"url": "#{url}"}|)
|
|
)
|
|
end
|
|
end
|