debianize-mobilizon/lib/mobilizon/actors/member.ex

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defmodule Mobilizon.Actors.Member do
@moduledoc """
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Represents the membership of an actor to a group.
"""
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use Ecto.Schema
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import Ecto.Changeset
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alias Mobilizon.Actors.{Actor, MemberRole}
alias Mobilizon.Web.Endpoint
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@type t :: %__MODULE__{
role: MemberRole.t(),
parent: Actor.t(),
actor: Actor.t()
}
@required_attrs [:parent_id, :actor_id, :url]
@optional_attrs [:role, :invited_by_id]
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@attrs @required_attrs ++ @optional_attrs
@metadata_attrs []
@primary_key {:id, :binary_id, autogenerate: true}
schema "members" do
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field(:role, MemberRole, default: :member)
field(:url, :string)
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embeds_one :metadata, Metadata, on_replace: :delete do
# TODO : Use this space to put notes when someone is invited / requested to join
end
belongs_to(:invited_by, Actor)
belongs_to(:parent, Actor)
belongs_to(:actor, Actor)
timestamps()
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
def get_default_member_role(%Actor{openness: :open}), do: :member
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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"""
def can_be_joined(%Actor{type: :Group, openness: :invite_only}), do: false
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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"""
def is_administrator(%__MODULE__{role: :administrator}), do: true
def is_administrator(%__MODULE__{role: :creator}), do: true
def is_administrator(%__MODULE__{}), do: false
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@doc false
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@spec changeset(t, map) :: Ecto.Changeset.t()
def changeset(%__MODULE__{} = member, attrs) do
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member
|> cast(attrs, @attrs)
|> cast_embed(:metadata, with: &metadata_changeset/2)
|> ensure_url()
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|> validate_required(@required_attrs)
# On both parent_id and actor_id
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|> unique_constraint(:parent_id, name: :members_actor_parent_unique_index)
|> unique_constraint(:url, name: :members_url_index)
end
defp metadata_changeset(schema, params) do
schema
|> cast(params, @metadata_attrs)
end
# If there's a blank URL that's because we're doing the first insert
@spec ensure_url(Ecto.Changeset.t()) :: Ecto.Changeset.t()
defp ensure_url(%Ecto.Changeset{data: %__MODULE__{url: nil}} = changeset) do
case fetch_change(changeset, :url) do
{:ok, _url} ->
changeset
:error ->
generate_url(changeset)
end
end
# Most time just go with the given URL
defp ensure_url(%Ecto.Changeset{} = changeset), do: changeset
@spec generate_url(Ecto.Changeset.t()) :: Ecto.Changeset.t()
defp generate_url(%Ecto.Changeset{} = changeset) do
uuid = Ecto.UUID.generate()
changeset
|> put_change(:id, uuid)
|> put_change(:url, "#{Endpoint.url()}/member/#{uuid}")
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end
end