mobilizon/lib/web/views/json_ld/object_view.ex

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2020-01-26 21:36:50 +01:00
defmodule Mobilizon.Web.JsonLD.ObjectView do
use Mobilizon.Web, :view
alias Mobilizon.Actors.Actor
alias Mobilizon.Addresses.Address
alias Mobilizon.Events.{Event, EventOptions, Participant}
alias Mobilizon.Posts.Post
alias Mobilizon.Web.Endpoint
2020-01-26 21:36:50 +01:00
alias Mobilizon.Web.JsonLD.ObjectView
import Mobilizon.Service.Metadata.Utils,
only: [process_description: 3]
@spec render(String.t(), map()) :: map()
def render("group.json", %{group: %Actor{} = group}) do
res = %{
"@context" => "http://schema.org",
"@type" => "Organization",
"url" => group.url,
"name" => group.name || group.preferred_username,
"address" => render_address(group)
}
res =
if group.banner do
Map.put(res, "image", group.banner.url)
else
res
end
if group.physical_address do
Map.put(
res,
"address",
render_one(group.physical_address, ObjectView, "address.json", as: :address)
)
else
res
end
end
def render("event.json", %{event: %Event{} = event}) do
organizer = %{
"@type" => if(event.organizer_actor.type == :Group, do: "Organization", else: "Person"),
"name" => Actor.display_name(event.organizer_actor)
}
organizer =
if event.organizer_actor.avatar do
Map.put(organizer, "image", event.organizer_actor.avatar.url)
else
organizer
end
participant_count = Mobilizon.Events.count_participant_participants(event.id)
json_ld = %{
"@context" => "https://schema.org",
"@type" => "Event",
"name" => event.title,
"description" => process_description(event.description, "en", nil),
# We assume for now performer == organizer
"performer" => organizer,
"organizer" => organizer,
"location" => render_all_locations(event),
"eventAttendanceMode" => event |> attendance_mode() |> event_attendance_mode(),
"maximumAttendeeCapacity" => event.options.maximum_attendee_capacity,
"remainingAttendeeCapacity" =>
remaining_attendee_capacity(event.options, participant_count),
"eventStatus" =>
if(event.status == :cancelled,
do: "https://schema.org/EventCancelled",
else: "https://schema.org/EventScheduled"
),
"image" =>
if(event.picture,
do: [
event.picture.file.url
],
else: ["#{Endpoint.url()}/img/mobilizon_default_card.png"]
)
}
json_ld =
if event.begins_on,
do: Map.put(json_ld, "startDate", DateTime.to_iso8601(event.begins_on)),
else: json_ld
json_ld =
if event.ends_on,
do: Map.put(json_ld, "endDate", DateTime.to_iso8601(event.ends_on)),
else: json_ld
json_ld
end
def render("place.json", %{address: %Address{} = address}) do
%{
"@type" => "Place",
"name" => address.description,
"address" => render_one(address, ObjectView, "address.json", as: :address)
}
end
def render("address.json", %{address: %Address{} = address}) do
%{
"@type" => "PostalAddress",
"streetAddress" => address.street,
"addressLocality" => address.locality,
"postalCode" => address.postal_code,
"addressRegion" => address.region,
"addressCountry" => address.country
}
end
def render("post.json", %{post: %Post{} = post}) do
%{
"@context" => "https://schema.org",
"@type" => "Article",
"name" => post.title,
"headline" => post.title,
"author" => %{
"@type" => "Organization",
"name" => Actor.display_name(post.attributed_to),
"url" => URI.decode(url(~p"/@#{Actor.preferred_username_and_domain(post.attributed_to)}"))
},
"datePublished" => post.publish_at,
"dateModified" => post.updated_at,
"image" =>
if(post.picture,
do: [
post.picture.file.url
],
else: ["#{Endpoint.url()}/img/mobilizon_default_card.png"]
)
}
end
def render("participation.json", %{
participant: %Participant{} = participant
}) do
res = %{
"@context" => "http://schema.org",
"@type" => "EventReservation",
"underName" => %{
"@type" => "Person",
"name" => participant.actor.name || participant.actor.preferred_username
},
"reservationFor" => render("event.json", %{event: participant.event}),
"reservationStatus" => reservation_status(participant.role),
"modifiedTime" => participant.updated_at,
"modifyReservationUrl" => url(~p"/events/#{participant.event.uuid}")
}
if participant.code do
Map.put(res, "reservationNumber", participant.code)
else
res
end
end
@spec reservation_status(atom()) :: String.t()
defp reservation_status(:rejected), do: "https://schema.org/ReservationCancelled"
defp reservation_status(:not_confirmed), do: "https://schema.org/ReservationPending"
defp reservation_status(:not_approved), do: "https://schema.org/ReservationHold"
defp reservation_status(_), do: "https://schema.org/ReservationConfirmed"
defp render_all_locations(%Event{} = event) do
[]
|> render_location(event)
|> render_virtual_location(event)
|> maybe_render_single_element()
end
@spec render_location(list(), map()) :: list()
defp render_location(locations, %{physical_address: %Address{} = address}),
do: locations ++ [render_one(address, ObjectView, "place.json", as: :address)]
defp render_location(locations, _), do: locations
# For now the Virtual Location of an event is it's own URL,
# but in the future it will be a special field
defp render_virtual_location(locations, %Event{
url: event_url,
metadata: metadata,
options: %EventOptions{is_online: is_online}
}) do
links = virtual_location_links(metadata)
fallback_links = if is_online, do: [event_url], else: []
links = if length(links) > 0, do: Enum.map(links, & &1.value), else: fallback_links
locations ++
Enum.map(
links,
&%{
"@type" => "VirtualLocation",
"url" => &1
}
)
end
defp render_virtual_location(locations, _), do: locations
@spec maybe_render_single_element(list(map())) :: list(map()) | map()
defp maybe_render_single_element([location]), do: location
defp maybe_render_single_element(locations), do: locations
defp render_address(%{physical_address: %Address{} = address}),
do: render_one(address, ObjectView, "address.json", as: :address)
defp render_address(_), do: nil
defp event_attendance_mode(:online), do: "https://schema.org/OnlineEventAttendanceMode"
defp event_attendance_mode(:offline), do: "https://schema.org/OfflineEventAttendanceMode"
defp event_attendance_mode(:mixed), do: "https://schema.org/MixedEventAttendanceMode"
defp attendance_mode(%Event{options: %EventOptions{is_online: true}}),
do: :online
defp attendance_mode(%Event{physical_address: %Address{}, metadata: metadata}) do
if metadata |> virtual_location_links() |> length() > 0 do
:mixed
else
:offline
end
end
defp attendance_mode(%Event{}),
do: :offline
@livestream_keys ["mz:live", "mz:visio"]
@spec virtual_location_links(list()) :: list()
defp virtual_location_links(metadata),
do: Enum.filter(metadata, &String.contains?(&1.key, @livestream_keys))
# TODO: Make this in common with Mobilizon.Federation.ActivityStream.Converter.Event
@spec remaining_attendee_capacity(map(), integer()) :: integer() | nil
defp remaining_attendee_capacity(
%{maximum_attendee_capacity: maximum_attendee_capacity},
participant_count
)
when is_integer(maximum_attendee_capacity) and maximum_attendee_capacity > 0 do
maximum_attendee_capacity - participant_count
end
defp remaining_attendee_capacity(
%{maximum_attendee_capacity: _},
_participant_count
),
do: nil
end