125 lines
3.4 KiB
Elixir
125 lines
3.4 KiB
Elixir
defmodule Mobilizon.Actors.Member do
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@moduledoc """
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Represents the membership of an actor to a group.
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"""
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use Ecto.Schema
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import Ecto.Changeset
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alias Mobilizon.Actors.{Actor, MemberRole}
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alias Mobilizon.Actors.Member.Metadata
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alias Mobilizon.Web.Endpoint
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@type t :: %__MODULE__{
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id: String.t(),
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url: String.t(),
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role: atom(),
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parent: Actor.t(),
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actor: Actor.t(),
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metadata: Metadata.t()
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}
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@required_attrs [:parent_id, :actor_id, :url]
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@optional_attrs [:role, :invited_by_id]
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@attrs @required_attrs ++ @optional_attrs
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@primary_key {:id, :binary_id, autogenerate: true}
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schema "members" do
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field(:role, MemberRole, default: :member)
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field(:url, :string)
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field(:member_since, :utc_datetime)
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embeds_one(:metadata, Metadata, on_replace: :delete)
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belongs_to(:invited_by, Actor)
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belongs_to(:parent, Actor)
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belongs_to(:actor, Actor)
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timestamps()
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end
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@doc """
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Gets the default member role depending on the actor openness.
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"""
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@spec get_default_member_role(Actor.t()) :: atom
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def get_default_member_role(%Actor{openness: :open}), do: :member
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def get_default_member_role(%Actor{}), do: :not_approved
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@doc """
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Checks whether the actor can be joined to the group.
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"""
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def can_be_joined(%Actor{type: :Group, openness: :invite_only}), do: false
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def can_be_joined(%Actor{type: :Group}), do: true
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@doc """
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Checks whether the member is an administrator (admin or creator) of the group.
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"""
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def is_administrator(%__MODULE__{role: :administrator}), do: true
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def is_administrator(%__MODULE__{role: :creator}), do: true
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def is_administrator(%__MODULE__{}), do: false
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@doc false
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@spec changeset(t | Ecto.Schema.t(), map) :: Ecto.Changeset.t()
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def changeset(%__MODULE__{} = member, attrs) do
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member
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|> cast(attrs, @attrs)
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|> cast_embed(:metadata)
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|> ensure_url()
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|> update_member_since()
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|> validate_required(@required_attrs)
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# On both parent_id and actor_id
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|> unique_constraint(:parent_id, name: :members_actor_parent_unique_index)
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|> unique_constraint(:url, name: :members_url_index)
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end
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# If there's a blank URL that's because we're doing the first insert
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@spec ensure_url(Ecto.Changeset.t()) :: Ecto.Changeset.t()
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defp ensure_url(%Ecto.Changeset{data: %__MODULE__{url: nil}} = changeset) do
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case fetch_change(changeset, :url) do
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{:ok, _url} ->
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changeset
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:error ->
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generate_url(changeset)
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end
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end
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# Most time just go with the given URL
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defp ensure_url(%Ecto.Changeset{} = changeset), do: changeset
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@spec generate_url(Ecto.Changeset.t()) :: Ecto.Changeset.t()
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defp generate_url(%Ecto.Changeset{} = changeset) do
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uuid = Ecto.UUID.generate()
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changeset
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|> put_change(:id, uuid)
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|> put_change(:url, "#{Endpoint.url()}/member/#{uuid}")
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end
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@spec update_member_since(Ecto.Changeset.t()) :: Ecto.Changeset.t()
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defp update_member_since(%Ecto.Changeset{data: data} = changeset) do
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new_role = get_change(changeset, :role)
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cond do
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new_role in [
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:member,
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:moderator,
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:administrator,
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:creator
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] ->
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put_change(
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changeset,
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:member_since,
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DateTime.truncate(data.member_since || DateTime.utc_now(), :second)
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)
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new_role in [:invited, :not_approved, :rejected] ->
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put_change(changeset, :member_since, nil)
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true ->
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changeset
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end
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end
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end
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