debianize-mobilizon/lib/mobilizon/resources/resource.ex

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defmodule Mobilizon.Resources.Resource do
@moduledoc """
Represents a web resource
"""
use Ecto.Schema
import Ecto.Changeset
alias Ecto.Changeset
import Mobilizon.Storage.Ecto, only: [ensure_url: 2, maybe_add_published_at: 1]
import EctoEnum
defenum(TypeEnum, folder: 0, link: 1, picture: 20, pad: 30, calc: 40, visio: 50)
alias Mobilizon.Actors.Actor
@type t :: %__MODULE__{
title: String.t(),
summary: String.t(),
url: String.t(),
resource_url: String.t(),
type: atom(),
metadata: Mobilizon.Resources.Resource.Metadata.t(),
children: list(__MODULE__),
parent: __MODULE__,
actor: Actor.t(),
creator: Actor.t(),
local: boolean,
published_at: DateTime.t()
}
@primary_key {:id, :binary_id, autogenerate: true}
schema "resource" do
field(:summary, :string)
field(:title, :string)
field(:url, :string)
field(:resource_url, :string)
field(:type, TypeEnum)
field(:path, :string)
field(:local, :boolean, default: true)
field(:published_at, :utc_datetime)
embeds_one :metadata, Metadata, on_replace: :delete do
field(:type, :string)
field(:title, :string)
field(:description, :string)
field(:image_remote_url, :string)
field(:width, :integer)
field(:height, :integer)
field(:author_name, :string)
field(:author_url, :string)
field(:provider_name, :string)
field(:provider_url, :string)
field(:html, :string)
field(:favicon_url, :string)
end
has_many(:children, __MODULE__, foreign_key: :parent_id)
belongs_to(:parent, __MODULE__, type: :binary_id)
belongs_to(:actor, Actor)
belongs_to(:creator, Actor)
timestamps()
end
@required_attrs [:title, :url, :actor_id, :creator_id, :type, :path, :published_at]
@optional_attrs [:summary, :parent_id, :resource_url, :local]
@attrs @required_attrs ++ @optional_attrs
@metadata_attrs [
:type,
:title,
:description,
:image_remote_url,
:width,
:height,
:author_name,
:author_url,
:provider_name,
:provider_url,
:html,
:favicon_url
]
@doc false
def changeset(resource, attrs) do
resource
|> cast(attrs, @attrs)
|> cast_embed(:metadata, with: &metadata_changeset/2)
|> ensure_url(:resource)
|> maybe_add_published_at()
|> validate_resource_or_folder()
|> validate_required(@required_attrs)
|> unique_constraint(:url, name: :resource_url_index)
end
defp metadata_changeset(schema, params) do
schema
|> cast(params, @metadata_attrs)
end
@spec validate_resource_or_folder(Changeset.t()) :: Changeset.t()
defp validate_resource_or_folder(%Changeset{} = changeset) do
with {status, type} when status in [:changes, :data] <- fetch_field(changeset, :type),
true <- type != :folder do
validate_required(changeset, [:resource_url])
else
_ -> changeset
end
end
end