d488cf476e
Mastodon API demands this be null unless it’s a multi-selection poll. Not abiding by this can mess up display in some clients. Fixes: https://akkoma.dev/AkkomaGang/akkoma/issues/190
110 lines
3.4 KiB
Elixir
110 lines
3.4 KiB
Elixir
# Pleroma: A lightweight social networking server
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# Copyright © 2017-2021 Pleroma Authors <https://pleroma.social/>
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# SPDX-License-Identifier: AGPL-3.0-only
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defmodule Pleroma.Web.MastodonAPI.PollView do
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use Pleroma.Web, :view
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alias Pleroma.Web.CommonAPI.Utils
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def render("show.json", %{object: object, multiple: multiple, options: options} = params) do
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{end_time, expired} = end_time_and_expired(object)
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{options, votes_count} = options_and_votes_count(options)
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poll = %{
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# Mastodon uses separate ids for polls, but an object can't have
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# more than one poll embedded so object id is fine
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id: to_string(object.id),
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expires_at: end_time,
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expired: expired,
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multiple: multiple,
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votes_count: votes_count,
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voters_count: voters_count(multiple, object),
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options: options,
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emojis: Pleroma.Web.MastodonAPI.StatusView.build_emojis(object.data["emoji"])
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}
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if params[:for] do
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# when unauthenticated Mastodon doesn't include `voted` & `own_votes` keys in response
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{voted, own_votes} = voted_and_own_votes(params, options)
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Map.merge(poll, %{voted: voted, own_votes: own_votes})
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else
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poll
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end
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end
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def render("show.json", %{object: object} = params) do
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case object.data do
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%{"anyOf" => [_ | _] = options} ->
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render(__MODULE__, "show.json", Map.merge(params, %{multiple: true, options: options}))
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%{"oneOf" => [_ | _] = options} ->
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render(__MODULE__, "show.json", Map.merge(params, %{multiple: false, options: options}))
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_ ->
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nil
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end
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end
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defp end_time_and_expired(object) do
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if object.data["closed"] do
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end_time = NaiveDateTime.from_iso8601!(object.data["closed"])
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expired = NaiveDateTime.compare(end_time, NaiveDateTime.utc_now()) == :lt
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{Utils.to_masto_date(end_time), expired}
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else
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{nil, false}
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end
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end
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defp options_and_votes_count(options) do
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Enum.map_reduce(options, 0, fn %{"name" => name} = option, count ->
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current_count = option["replies"]["totalItems"] || 0
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{%{
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title: name,
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votes_count: current_count
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}, current_count + count}
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end)
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end
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defp voters_count(false, _poll_data) do
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# Mastodon always sets voter count to "null" unless multiple options were selectable
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# Some clients may rely on this to detect multiple selection polls and it can mess
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# up percentages for some clients if we never got a correct remote voter count and
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# only count local voters here; see https://akkoma.dev/AkkomaGang/akkoma/issues/190
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nil
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end
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defp voters_count(_multiple, %{data: %{"voters" => voters}}) when is_list(voters) do
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length(voters)
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end
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defp voters_count(_, _), do: 0
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defp voted_and_own_votes(%{object: object} = params, options) do
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if params[:for] do
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existing_votes =
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Pleroma.Web.ActivityPub.Utils.get_existing_votes(params[:for].ap_id, object)
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voted = existing_votes != [] or params[:for].ap_id == object.data["actor"]
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own_votes =
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if voted do
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titles = Enum.map(options, & &1[:title])
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Enum.reduce(existing_votes, [], fn vote, acc ->
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data = vote |> Map.get(:object) |> Map.get(:data)
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index = Enum.find_index(titles, &(&1 == data["name"]))
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[index | acc]
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end)
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else
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[]
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end
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{voted, own_votes}
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else
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{false, []}
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end
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end
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end
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