158 lines
3.8 KiB
Elixir
158 lines
3.8 KiB
Elixir
defmodule Mobilizon.Medias do
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@moduledoc """
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The Media context.
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"""
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import Ecto.Query
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import Mobilizon.Storage.CustomFunctions
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alias Ecto.Multi
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alias Mobilizon.Actors.Actor
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alias Mobilizon.Medias.{File, Media}
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alias Mobilizon.Storage.{Page, Repo}
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alias Mobilizon.Users.User
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alias Mobilizon.Web.Upload
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require Logger
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@doc """
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Gets a single media.
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"""
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@spec get_media(integer | String.t()) :: Media.t() | nil
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def get_media(id), do: Repo.get(Media, id)
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@doc """
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Gets a single media.
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Raises `Ecto.NoResultsError` if the media does not exist.
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"""
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@spec get_media!(integer | String.t()) :: Media.t()
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def get_media!(id), do: Repo.get!(Media, id)
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@doc """
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Get a media by its URL.
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"""
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@spec get_media_by_url(String.t()) :: Media.t() | nil
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def get_media_by_url(url) do
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url
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|> media_by_url_query()
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|> limit(1)
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|> Repo.one()
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end
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@doc """
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Get all media by an URL.
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"""
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@spec get_all_media_by_url(String.t()) :: Media.t() | nil
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def get_all_media_by_url(url) do
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url
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|> String.split("?", parts: 2)
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|> hd
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|> media_by_url_query()
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|> Repo.all()
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end
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@doc """
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List the paginated media for user
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"""
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@spec medias_for_user(integer | String.t(), integer | nil, integer | nil) :: Page.t()
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def medias_for_user(user_id, page, limit) do
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user_id
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|> medias_for_user_query()
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|> Page.build_page(page, limit)
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end
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@doc """
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Calculate the sum of media size used by the user
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"""
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@spec media_size_for_actor(integer | String.t()) :: integer()
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def media_size_for_actor(actor_id) do
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actor_id
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|> medias_for_actor_query()
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|> select([:file])
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|> Repo.all()
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|> Enum.map(& &1.file.size)
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|> Enum.filter(& &1)
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|> Enum.sum()
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end
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@doc """
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Calculate the sum of media size used by the user
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"""
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@spec media_size_for_user(integer | String.t()) :: integer()
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def media_size_for_user(user_id) do
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user_id
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|> medias_for_user_query()
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|> select([:file])
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|> Repo.all()
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|> Enum.map(& &1.file.size)
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|> Enum.sum()
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end
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@doc """
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Creates a media.
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"""
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@spec create_media(map) :: {:ok, Media.t()} | {:error, Ecto.Changeset.t()}
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def create_media(attrs \\ %{}) do
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%Media{}
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|> Media.changeset(attrs)
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|> Repo.insert()
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end
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@doc """
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Deletes a media.
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"""
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@spec delete_media(Media.t()) :: {:ok, Media.t()} | {:error, Ecto.Changeset.t()}
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def delete_media(%Media{} = media, opts \\ []) do
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transaction =
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Multi.new()
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|> Multi.delete(:media, media)
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|> Multi.run(:remove, fn _repo, %{media: %Media{file: %File{url: url}} = media} ->
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case Upload.remove(url) do
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{:error, err} ->
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if err == :enofile and Keyword.get(opts, :ignore_file_not_found, false) do
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Logger.info("Deleting media and ignoring absent file.")
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{:ok, media}
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else
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{:error, err}
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end
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{:ok, media} ->
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{:ok, media}
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end
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end)
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|> Repo.transaction()
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case transaction do
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{:ok, %{media: %Media{} = media}} ->
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{:ok, media}
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{:error, :remove, error, _} ->
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{:error, error}
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end
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end
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@spec media_by_url_query(String.t()) :: Ecto.Query.t()
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defp media_by_url_query(url) do
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from(
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p in Media,
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where: split_part(fragment("file->>'url'"), "?", 1) == ^url
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)
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end
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@spec medias_for_actor_query(integer() | String.t()) :: Ecto.Query.t()
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defp medias_for_actor_query(actor_id) do
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Media
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|> join(:inner, [p], a in Actor, on: p.actor_id == a.id)
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|> where([_p, a], a.id == ^actor_id)
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end
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@spec medias_for_user_query(integer() | String.t()) :: Ecto.Query.t()
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defp medias_for_user_query(user_id) do
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Media
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|> join(:inner, [p], a in Actor, on: p.actor_id == a.id)
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|> join(:inner, [_p, a], u in User, on: a.user_id == u.id)
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|> where([_p, _a, u], u.id == ^user_id)
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end
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end
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