82 lines
2.5 KiB
Elixir
82 lines
2.5 KiB
Elixir
defmodule Mobilizon.GraphQL.API.Utils do
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@moduledoc """
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Utils for API.
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"""
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alias Mobilizon.{Config, Medias}
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alias Mobilizon.Medias.Media
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alias Mobilizon.Service.Formatter
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@doc """
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Creates HTML content from text and mentions
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"""
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@spec make_content_html(String.t(), list(), String.t()) :: String.t()
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def make_content_html(text, additional_tags, content_type) do
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with {text, mentions, tags} <- format_input(text, content_type, []) do
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{text, mentions, additional_tags ++ Enum.map(tags, fn {_, tag} -> tag end)}
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end
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end
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def format_input(text, "text/plain", options) do
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text
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|> Formatter.html_escape("text/plain")
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|> Formatter.linkify(options)
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|> (fn {text, mentions, tags} -> {String.replace(text, ~r/\r?\n/, "<br>"), mentions, tags} end).()
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end
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def format_input(text, "text/html", options) do
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text
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|> Formatter.html_escape("text/html")
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|> Formatter.linkify(options)
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end
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def make_report_content_text(nil), do: {:ok, nil}
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def make_report_content_text(comment) do
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max_size = Config.get([:instance, :max_report_comment_size], 1000)
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if String.length(comment) <= max_size do
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{:ok, Formatter.html_escape(comment, "text/plain")}
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else
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{:error, "Comment must be up to #{max_size} characters"}
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end
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end
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@doc """
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Use the data-media-id attributes to extract media from body text
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"""
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@spec extract_pictures_from_body(String.t(), integer() | String.t()) :: list(Media.t())
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def extract_pictures_from_body(body, actor_id) do
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body
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|> do_extract_pictures_from_body()
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|> Enum.map(&fetch_picture(&1, actor_id))
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|> Enum.filter(& &1)
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end
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@spec do_extract_pictures_from_body(String.t()) :: list(String.t())
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defp do_extract_pictures_from_body(body) when is_nil(body) or body == "", do: []
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defp do_extract_pictures_from_body(body) do
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{:ok, document} = Floki.parse_document(body)
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document
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|> Floki.attribute("img", "data-media-id")
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end
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@spec fetch_picture(String.t() | integer(), String.t() | integer()) :: Media.t() | nil
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defp fetch_picture(id, actor_id) do
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with %Media{actor_id: media_actor_id} = media <- Medias.get_media(id),
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{:owns_media, true} <-
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{:owns_media, check_actor_owns_media?(actor_id, media_actor_id)} do
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media
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else
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_ -> nil
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end
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end
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@spec check_actor_owns_media?(integer() | String.t(), integer() | String.t()) :: boolean()
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defp check_actor_owns_media?(actor_id, media_actor_id) do
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actor_id == media_actor_id || Mobilizon.Actors.is_member?(media_actor_id, actor_id)
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end
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end
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