282 lines
8.2 KiB
Elixir
282 lines
8.2 KiB
Elixir
defmodule Mobilizon.Events.Event do
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@moduledoc """
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Represents an event.
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"""
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use Ecto.Schema
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import Ecto.Changeset
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alias Ecto.Changeset
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alias Mobilizon.Actors.Actor
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alias Mobilizon.Addresses.Address
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alias Mobilizon.Addresses
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alias Mobilizon.Events.{
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EventOptions,
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EventStatus,
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EventVisibility,
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JoinOptions,
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EventParticipantStats,
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Participant,
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Session,
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Tag,
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Track
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}
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alias Mobilizon.Media
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alias Mobilizon.Media.Picture
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alias Mobilizon.Mention
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alias Mobilizon.Storage.Repo
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alias MobilizonWeb.Endpoint
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alias MobilizonWeb.Router.Helpers, as: Routes
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@type t :: %__MODULE__{
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url: String.t(),
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local: boolean,
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begins_on: DateTime.t(),
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slug: String.t(),
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description: String.t(),
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ends_on: DateTime.t(),
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title: String.t(),
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status: EventStatus.t(),
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draft: boolean,
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visibility: EventVisibility.t(),
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join_options: JoinOptions.t(),
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publish_at: DateTime.t(),
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uuid: Ecto.UUID.t(),
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online_address: String.t(),
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phone_address: String.t(),
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category: String.t(),
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options: EventOptions.t(),
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organizer_actor: Actor.t(),
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attributed_to: Actor.t(),
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physical_address: Address.t(),
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picture: Picture.t(),
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tracks: [Track.t()],
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sessions: [Session.t()],
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mentions: [Mention.t()],
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tags: [Tag.t()],
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participants: [Actor.t()]
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}
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@update_required_attrs [:title, :begins_on, :organizer_actor_id]
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@required_attrs @update_required_attrs ++ [:url, :uuid]
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@optional_attrs [
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:slug,
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:description,
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:ends_on,
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:category,
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:status,
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:draft,
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:visibility,
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:join_options,
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:publish_at,
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:online_address,
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:phone_address,
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:picture_id,
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:physical_address_id
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]
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@attrs @required_attrs ++ @optional_attrs
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@update_attrs @update_required_attrs ++ @optional_attrs
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schema "events" do
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field(:url, :string)
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field(:local, :boolean, default: true)
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field(:begins_on, :utc_datetime)
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field(:slug, :string)
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field(:description, :string)
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field(:ends_on, :utc_datetime)
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field(:title, :string)
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field(:status, EventStatus, default: :confirmed)
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field(:draft, :boolean, default: false)
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field(:visibility, EventVisibility, default: :public)
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field(:join_options, JoinOptions, default: :free)
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field(:publish_at, :utc_datetime)
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field(:uuid, Ecto.UUID, default: Ecto.UUID.generate())
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field(:online_address, :string)
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field(:phone_address, :string)
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field(:category, :string)
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embeds_one(:options, EventOptions, on_replace: :delete)
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embeds_one(:participant_stats, EventParticipantStats, on_replace: :update)
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belongs_to(:organizer_actor, Actor, foreign_key: :organizer_actor_id)
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belongs_to(:attributed_to, Actor, foreign_key: :attributed_to_id)
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belongs_to(:physical_address, Address, on_replace: :nilify)
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belongs_to(:picture, Picture, on_replace: :update)
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has_many(:tracks, Track)
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has_many(:sessions, Session)
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has_many(:mentions, Mention)
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many_to_many(:tags, Tag, join_through: "events_tags", on_replace: :delete)
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many_to_many(:participants, Actor, join_through: Participant)
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timestamps(type: :utc_datetime)
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end
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@doc false
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@spec changeset(t, map) :: Changeset.t()
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def changeset(%__MODULE__{} = event, attrs) do
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attrs = Map.update(attrs, :uuid, Ecto.UUID.generate(), & &1)
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attrs = Map.update(attrs, :url, Routes.page_url(Endpoint, :event, attrs.uuid), & &1)
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event
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|> cast(attrs, @attrs)
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|> common_changeset(attrs)
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|> put_creator_if_published(:create)
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|> validate_required(@required_attrs)
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end
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@doc false
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@spec update_changeset(t, map) :: Changeset.t()
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def update_changeset(%__MODULE__{} = event, attrs) do
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event
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|> cast(attrs, @update_attrs)
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|> common_changeset(attrs)
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|> put_creator_if_published(:update)
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|> validate_required(@update_required_attrs)
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end
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@spec common_changeset(Changeset.t(), map) :: Changeset.t()
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defp common_changeset(%Changeset{} = changeset, attrs) do
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changeset
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|> cast_embed(:options)
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|> put_tags(attrs)
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|> put_address(attrs)
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|> put_picture(attrs)
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|> validate_lengths()
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|> validate_end_time()
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end
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@spec validate_lengths(Changeset.t()) :: Changeset.t()
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defp validate_lengths(%Changeset{} = changeset) do
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changeset
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|> validate_length(:title, min: 3, max: 200)
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|> validate_length(:online_address, min: 3, max: 2000)
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|> validate_length(:phone_address, min: 3, max: 200)
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|> validate_length(:category, min: 2, max: 100)
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# |> validate_length(:category, min: 2, max: 100)
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|> validate_length(:slug, min: 3, max: 200)
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end
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defp validate_end_time(%Changeset{} = changeset) do
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case fetch_field(changeset, :begins_on) do
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{_, begins_on} ->
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validate_change(changeset, :ends_on, fn :ends_on, ends_on ->
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if begins_on > ends_on,
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do: [ends_on: "ends_on cannot be set before begins_on"],
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else: []
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end)
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:error ->
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changeset
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end
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end
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@doc """
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Checks whether an event can be managed.
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"""
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@spec can_be_managed_by(t, integer | String.t()) :: boolean
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def can_be_managed_by(%__MODULE__{organizer_actor_id: organizer_actor_id}, actor_id)
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when organizer_actor_id == actor_id do
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{:event_can_be_managed, true}
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end
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def can_be_managed_by(_event, _actor), do: {:event_can_be_managed, false}
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@spec put_tags(Changeset.t(), map) :: Changeset.t()
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defp put_tags(%Changeset{} = changeset, %{tags: tags}),
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do: put_assoc(changeset, :tags, Enum.map(tags, &process_tag/1))
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defp put_tags(%Changeset{} = changeset, _), do: changeset
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# We need a changeset instead of a raw struct because of slug which is generated in changeset
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defp process_tag(%{id: _id} = tag), do: tag
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defp process_tag(tag) do
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Tag.changeset(%Tag{}, tag)
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end
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# In case the provided addresses is an existing one
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@spec put_address(Changeset.t(), map) :: Changeset.t()
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defp put_address(%Changeset{} = changeset, %{physical_address: %{id: id} = _physical_address})
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when not is_nil(id) do
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case Addresses.get_address(id) do
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%Address{} = address ->
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put_assoc(changeset, :physical_address, address)
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_ ->
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cast_assoc(changeset, :physical_address)
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end
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end
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# In case it's a new address but the origin_id is an existing one
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defp put_address(%Changeset{} = changeset, %{physical_address: %{origin_id: origin_id}})
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when not is_nil(origin_id) do
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case Repo.get_by(Address, origin_id: origin_id) do
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%Address{} = address ->
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put_assoc(changeset, :physical_address, address)
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_ ->
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cast_assoc(changeset, :physical_address)
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end
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end
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# In case it's a new address without any origin_id (manual)
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defp put_address(%Changeset{} = changeset, _attrs) do
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cast_assoc(changeset, :physical_address)
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end
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# In case the provided picture is an existing one
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@spec put_picture(Changeset.t(), map) :: Changeset.t()
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defp put_picture(%Changeset{} = changeset, %{picture: %{picture_id: id} = _picture}) do
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case Media.get_picture!(id) do
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%Picture{} = picture ->
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put_assoc(changeset, :picture, picture)
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_ ->
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changeset
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end
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end
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# In case it's a new picture
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defp put_picture(%Changeset{} = changeset, _attrs) do
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cast_assoc(changeset, :picture)
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end
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# Created or updated with draft parameter: don't publish
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defp put_creator_if_published(
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%Changeset{changes: %{draft: true}} = changeset,
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_action
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) do
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put_embed(changeset, :participant_stats, %{creator: 0})
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end
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# Created with any other value: publish
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defp put_creator_if_published(
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%Changeset{} = changeset,
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:create
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) do
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changeset
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|> put_embed(:participant_stats, %{creator: 1})
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end
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# Updated from draft false to true: publish
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defp put_creator_if_published(
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%Changeset{
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data: %{draft: false},
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changes: %{draft: true}
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} = changeset,
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:update
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) do
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changeset
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|> put_embed(:participant_stats, %{creator: 1})
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end
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defp put_creator_if_published(%Changeset{} = changeset, _),
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do: cast_embed(changeset, :participant_stats)
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end
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