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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.Feed.FeedView do
use Phoenix.HTML
use Pleroma.Web, :view
alias Pleroma.Formatter
alias Pleroma.Object
alias Pleroma.User
alias Pleroma.Web.Gettext
alias Pleroma.Web.MediaProxy
require Pleroma.Constants
@days ~w(Mon Tue Wed Thu Fri Sat Sun)
@months ~w(Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec)
@spec pub_date(String.t() | DateTime.t()) :: String.t()
def pub_date(date) when is_binary(date) do
date
|> Timex.parse!("{ISO:Extended}")
|> pub_date
end
def pub_date(%DateTime{} = date), do: to_rfc2822(date)
def prepare_activity(activity, opts \\ []) do
object = Object.normalize(activity, fetch: false)
actor =
if opts[:actor] do
Pleroma.User.get_cached_by_ap_id(activity.actor)
end
%{
activity: activity,
object: object,
data: Map.get(object, :data),
actor: actor
}
end
def most_recent_update(activities) do
with %{updated_at: updated_at} <- List.first(activities) do
to_rfc3339(updated_at)
end
end
def most_recent_update(activities, user, :atom) do
(List.first(activities) || user).updated_at
|> to_rfc3339()
end
def most_recent_update(activities, user, :rss) do
(List.first(activities) || user).updated_at
|> to_rfc2822()
end
def feed_logo do
case Pleroma.Config.get([:feed, :logo]) do
nil ->
"#{Pleroma.Web.Endpoint.url()}/static/logo.svg"
logo ->
"#{Pleroma.Web.Endpoint.url()}#{logo}"
end
|> MediaProxy.url()
end
def email(user) do
user.nickname <> "@" <> Pleroma.Web.Endpoint.host()
end
def logo(user) do
user
|> User.avatar_url()
|> MediaProxy.url()
end
def last_activity(activities), do: List.last(activities)
def activity_title(%{"content" => content, "summary" => summary} = data, opts \\ %{}) do
title =
cond do
summary != "" -> summary
content != "" -> activity_content(data)
true -> "a post"
end
title
|> Pleroma.Web.Metadata.Utils.scrub_html()
|> Pleroma.Emoji.Formatter.demojify()
|> Formatter.truncate(opts[:max_length], opts[:omission])
end
def activity_description(data) do
content = activity_content(data)
summary = data["summary"]
cond do
content != "" -> escape(content)
summary != "" -> escape(summary)
true -> escape(data["type"])
end
end
def activity_content(%{"content" => content}) do
content
|> String.replace(~r/[\n\r]/, "")
end
def activity_content(_), do: ""
def activity_context(activity), do: escape(activity.data["context"])
def attachment_href(attachment) do
attachment["url"]
|> hd()
|> Map.get("href")
end
def attachment_type(attachment) do
attachment["url"]
|> hd()
|> Map.get("mediaType")
end
def get_href(id) do
with %Object{data: %{"external_url" => external_url}} <- Object.get_cached_by_ap_id(id) do
external_url
else
_e -> id
end
end
def escape(html) do
html
|> html_escape()
|> safe_to_string()
end
@spec to_rfc3339(String.t() | NativeDateTime.t()) :: String.t()
def to_rfc3339(date) when is_binary(date) do
date
|> Timex.parse!("{ISO:Extended}")
|> to_rfc3339()
end
def to_rfc3339(nd) do
nd
|> Timex.to_datetime()
|> Timex.format!("{RFC3339}")
end
@spec to_rfc2822(String.t() | DateTime.t() | NativeDateTime.t()) :: String.t()
def to_rfc2822(datestr) when is_binary(datestr) do
datestr
|> Timex.parse!("{ISO:Extended}")
|> to_rfc2822()
end
def to_rfc2822(%DateTime{} = date) do
date
|> DateTime.to_naive()
|> NaiveDateTime.to_erl()
|> rfc2822_from_erl()
end
def to_rfc2822(nd) do
nd
|> Timex.to_datetime()
|> DateTime.to_naive()
|> NaiveDateTime.to_erl()
|> rfc2822_from_erl()
end
@doc """
Builds a RFC2822 timestamp from an Erlang timestamp
[RFC2822 3.3 - Date and Time Specification](https://tools.ietf.org/html/rfc2822#section-3.3)
This function always assumes the Erlang timestamp is in Universal time, not Local time
"""
def rfc2822_from_erl({{year, month, day} = date, {hour, minute, second}}) do
day_name = Enum.at(@days, :calendar.day_of_the_week(date) - 1)
month_name = Enum.at(@months, month - 1)
date_part = "#{day_name}, #{day} #{month_name} #{year}"
time_part = "#{pad(hour)}:#{pad(minute)}:#{pad(second)}"
date_part <> " " <> time_part <> " +0000"
end
defp pad(num) do
num
|> Integer.to_string()
|> String.pad_leading(2, "0")
end
end
|
