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# Pleroma: A lightweight social networking server
# Copyright © 2017-2022 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Web.MastodonAPI.PollView do
use Pleroma.Web, :view
alias Pleroma.Web.CommonAPI.Utils
def render("show.json", %{object: object, multiple: multiple, options: options} = params) do
{end_time, expired} = end_time_and_expired(object)
{options, votes_count} = options_and_votes_count(options)
poll = %{
# Mastodon uses separate ids for polls, but an object can't have
# more than one poll embedded so object id is fine
id: to_string(object.id),
expires_at: end_time,
expired: expired,
multiple: multiple,
votes_count: votes_count,
voters_count: voters_count(object),
options: options,
emojis: Pleroma.Web.MastodonAPI.StatusView.build_emojis(object.data["emoji"]),
pleroma: %{
non_anonymous: object.data["nonAnonymous"] || false
}
}
if params[:for] do
# when unauthenticated Mastodon doesn't include `voted` & `own_votes` keys in response
{voted, own_votes} = voted_and_own_votes(params, options)
Map.merge(poll, %{voted: voted, own_votes: own_votes})
else
poll
end
end
def render("show.json", %{object: object} = params) do
case object.data do
%{"anyOf" => [_ | _] = options} ->
render(__MODULE__, "show.json", Map.merge(params, %{multiple: true, options: options}))
%{"oneOf" => [_ | _] = options} ->
render(__MODULE__, "show.json", Map.merge(params, %{multiple: false, options: options}))
_ ->
nil
end
end
defp end_time_and_expired(object) do
if object.data["closed"] do
end_time = NaiveDateTime.from_iso8601!(object.data["closed"])
expired = NaiveDateTime.compare(end_time, NaiveDateTime.utc_now()) == :lt
{Utils.to_masto_date(end_time), expired}
else
{nil, false}
end
end
defp options_and_votes_count(options) do
Enum.map_reduce(options, 0, fn %{"name" => name} = option, count ->
current_count = option["replies"]["totalItems"] || 0
{%{
title: name,
votes_count: current_count
}, current_count + count}
end)
end
defp voters_count(%{data: %{"voters" => [_ | _] = voters}}) do
length(voters)
end
defp voters_count(_), do: 0
defp voted_and_own_votes(%{object: object} = params, options) do
if params[:for] do
existing_votes =
Pleroma.Web.ActivityPub.Utils.get_existing_votes(params[:for].ap_id, object)
voted = existing_votes != [] or params[:for].ap_id == object.data["actor"]
own_votes =
if voted do
titles = Enum.map(options, & &1[:title])
Enum.reduce(existing_votes, [], fn vote, acc ->
data = vote |> Map.get(:object) |> Map.get(:data)
index = Enum.find_index(titles, &(&1 == data["name"]))
[index | acc]
end)
else
[]
end
{voted, own_votes}
else
{false, []}
end
end
end

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