akkoma/lib/pleroma/web/twitter_api/twitter_api.ex

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Elixir
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defmodule Pleroma.Web.TwitterAPI.TwitterAPI do
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alias Pleroma.{User, Activity, Repo, Object}
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alias Pleroma.Web.ActivityPub.ActivityPub
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alias Pleroma.Web.ActivityPub.Utils
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alias Pleroma.Web.TwitterAPI.Representers.{ActivityRepresenter, UserRepresenter}
alias Pleroma.Web.OStatus
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import Ecto.Query
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def to_for_user_and_mentions(user, mentions) do
default_to = [
User.ap_followers(user),
"https://www.w3.org/ns/activitystreams#Public"
]
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default_to ++ Enum.map(mentions, fn ({_, %{ap_id: ap_id}}) -> ap_id end)
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end
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def format_input(text, mentions) do
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HtmlSanitizeEx.strip_tags(text)
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|> String.replace("\n", "<br>")
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|> add_user_links(mentions)
end
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def attachments_from_ids(ids) do
Enum.map(ids || [], fn (media_id) ->
Repo.get(Object, media_id).data
end)
end
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def get_replied_to_activity(id) when not is_nil(id) do
Repo.get(Activity, id)
end
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def get_replied_to_activity(_), do: nil
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def add_attachments(text, attachments) do
attachment_text = Enum.map(attachments, fn
(%{"url" => [%{"href" => href} | _]}) ->
"<a href='#{href}' class='attachment'>#{href}</a>"
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_ -> ""
end)
Enum.join([text | attachment_text], "<br>")
end
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def create_status(%User{} = user, %{"status" => status} = data) do
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attachments = attachments_from_ids(data["media_ids"])
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context = Utils.generate_context_id
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mentions = parse_mentions(status)
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content_html = status
|> format_input(mentions)
|> add_attachments(attachments)
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to = to_for_user_and_mentions(user, mentions)
date = make_date()
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inReplyTo = get_replied_to_activity(data["in_reply_to_status_id"])
# Wire up reply info.
[to, context, object, additional] =
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if inReplyTo do
context = inReplyTo.data["context"]
to = to ++ [inReplyTo.data["actor"]]
object = %{
"type" => "Note",
"to" => to,
"content" => content_html,
"published" => date,
"context" => context,
"attachment" => attachments,
"actor" => user.ap_id,
"inReplyTo" => inReplyTo.data["object"]["id"],
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"inReplyToStatusId" => inReplyTo.id,
}
additional = %{}
[to, context, object, additional]
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else
object = %{
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"type" => "Note",
"to" => to,
"content" => content_html,
"published" => date,
"context" => context,
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"attachment" => attachments,
"actor" => user.ap_id
}
[to, context, object, %{}]
end
ActivityPub.create(to, user, context, object, additional, data)
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end
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def fetch_friend_statuses(user, opts \\ %{}) do
ActivityPub.fetch_activities([user.ap_id | user.following], opts)
|> activities_to_statuses(%{for: user})
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end
def fetch_public_statuses(user, opts \\ %{}) do
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opts = Map.put(opts, "local_only", true)
ActivityPub.fetch_public_activities(opts)
|> activities_to_statuses(%{for: user})
end
def fetch_public_and_external_statuses(user, opts \\ %{}) do
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ActivityPub.fetch_public_activities(opts)
|> activities_to_statuses(%{for: user})
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end
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def fetch_user_statuses(user, opts \\ %{}) do
ActivityPub.fetch_activities([], opts)
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|> activities_to_statuses(%{for: user})
end
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def fetch_mentions(user, opts \\ %{}) do
ActivityPub.fetch_activities([user.ap_id], opts)
|> activities_to_statuses(%{for: user})
end
def fetch_conversation(user, id) do
with context when is_binary(context) <- conversation_id_to_context(id),
activities <- ActivityPub.fetch_activities_for_context(context),
statuses <- activities |> activities_to_statuses(%{for: user})
do
statuses
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else _e ->
[]
end
end
def fetch_status(user, id) do
with %Activity{} = activity <- Repo.get(Activity, id) do
activity_to_status(activity, %{for: user})
end
end
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def follow(%User{} = follower, params) do
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with {:ok, %User{} = followed} <- get_user(params),
{:ok, follower} <- User.follow(follower, followed),
{:ok, activity} <- ActivityPub.follow(follower, followed)
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do
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{:ok, follower, followed, activity}
else
err -> err
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end
end
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def unfollow(%User{} = follower, params) do
with { :ok, %User{} = unfollowed } <- get_user(params),
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{ :ok, follower, follow_activity } <- User.unfollow(follower, unfollowed),
{ :ok, _activity } <- ActivityPub.insert(%{
"type" => "Undo",
"actor" => follower.ap_id,
"object" => follow_activity.data["id"], # get latest Follow for these users
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"published" => make_date()
})
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do
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{ :ok, follower, unfollowed }
else
err -> err
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end
end
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def favorite(%User{} = user, %Activity{data: %{"object" => object}} = activity) do
object = Object.get_by_ap_id(object["id"])
{:ok, _like_activity, object} = ActivityPub.like(user, object)
new_data = activity.data
|> Map.put("object", object.data)
status = %{activity | data: new_data}
|> activity_to_status(%{for: user})
{:ok, status}
end
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def unfavorite(%User{} = user, %Activity{data: %{"object" => object}} = activity) do
object = Object.get_by_ap_id(object["id"])
{:ok, object} = ActivityPub.unlike(user, object)
new_data = activity.data
|> Map.put("object", object.data)
status = %{activity | data: new_data}
|> activity_to_status(%{for: user})
{:ok, status}
end
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def retweet(%User{} = user, %Activity{data: %{"object" => object}} = activity) do
object = Object.get_by_ap_id(object["id"])
{:ok, _announce_activity, object} = ActivityPub.announce(user, object)
new_data = activity.data
|> Map.put("object", object.data)
status = %{activity | data: new_data}
|> activity_to_status(%{for: user})
{:ok, status}
end
def upload(%Plug.Upload{} = file, format \\ "xml") do
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{:ok, object} = ActivityPub.upload(file)
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url = List.first(object.data["url"])
href = url["href"]
type = url["mediaType"]
case format do
"xml" ->
# Fake this as good as possible...
"""
<?xml version="1.0" encoding="UTF-8"?>
<rsp stat="ok" xmlns:atom="http://www.w3.org/2005/Atom">
<mediaid>#{object.id}</mediaid>
<media_id>#{object.id}</media_id>
<media_id_string>#{object.id}</media_id_string>
<media_url>#{href}</media_url>
<mediaurl>#{href}</mediaurl>
<atom:link rel="enclosure" href="#{href}" type="#{type}"></atom:link>
</rsp>
"""
"json" ->
%{
media_id: object.id,
media_id_string: "#{object.id}}",
media_url: href,
size: 0
} |> Poison.encode!
end
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end
def parse_mentions(text) do
# Modified from https://www.w3.org/TR/html5/forms.html#valid-e-mail-address
regex = ~r/@[a-zA-Z0-9.!#$%&'*+\/=?^_`{|}~-]+@?[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*/
Regex.scan(regex, text)
|> List.flatten
|> Enum.uniq
|> Enum.map(fn ("@" <> match = full_match) -> {full_match, User.get_cached_by_nickname(match)} end)
|> Enum.filter(fn ({_match, user}) -> user end)
end
def add_user_links(text, mentions) do
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mentions = mentions
|> Enum.sort_by(fn ({name, _}) -> -String.length(name) end)
|> Enum.map(fn({name, user}) -> {name, user, Ecto.UUID.generate} end)
# This replaces the mention with a unique reference first so it doesn't
# contain parts of other replaced mentions. There probably is a better
# solution for this...
step_one = mentions
|> Enum.reduce(text, fn ({match, _user, uuid}, text) ->
String.replace(text, match, uuid)
end)
Enum.reduce(mentions, step_one, fn ({match, %User{ap_id: ap_id}, uuid}, text) ->
String.replace(text, uuid, "<a href='#{ap_id}'>#{match}</a>")
end)
end
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def register_user(params) do
params = %{
nickname: params["nickname"],
name: params["fullname"],
bio: params["bio"],
email: params["email"],
password: params["password"],
password_confirmation: params["confirm"]
}
changeset = User.register_changeset(%User{}, params)
with {:ok, user} <- Repo.insert(changeset) do
{:ok, UserRepresenter.to_map(user)}
else
{:error, changeset} ->
errors = Ecto.Changeset.traverse_errors(changeset, fn {msg, _opts} -> msg end)
|> Poison.encode!
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{:error, %{error: errors}}
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end
end
def get_user(user \\ nil, params) do
case params do
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%{"user_id" => user_id} ->
case target = Repo.get(User, user_id) do
nil ->
{:error, "No user with such user_id"}
_ ->
{:ok, target}
end
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%{"screen_name" => nickname} ->
case target = Repo.get_by(User, nickname: nickname) do
nil ->
{:error, "No user with such screen_name"}
_ ->
{:ok, target}
end
_ ->
if user do
{:ok, user}
else
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{:error, "You need to specify screen_name or user_id"}
end
end
end
defp activities_to_statuses(activities, opts) do
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Enum.map(activities, fn(activity) ->
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activity_to_status(activity, opts)
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end)
end
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# For likes, fetch the liked activity, too.
defp activity_to_status(%Activity{data: %{"type" => "Like"}} = activity, opts) do
actor = get_in(activity.data, ["actor"])
user = User.get_cached_by_ap_id(actor)
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[liked_activity] = Activity.all_by_object_ap_id(activity.data["object"])
ActivityRepresenter.to_map(activity, Map.merge(opts, %{user: user, liked_activity: liked_activity}))
end
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# For announces, fetch the announced activity and the user.
defp activity_to_status(%Activity{data: %{"type" => "Announce"}} = activity, opts) do
actor = get_in(activity.data, ["actor"])
user = User.get_cached_by_ap_id(actor)
[announced_activity] = Activity.all_by_object_ap_id(activity.data["object"])
announced_actor = User.get_cached_by_ap_id(announced_activity.data["actor"])
ActivityRepresenter.to_map(activity, Map.merge(opts, %{users: [user, announced_actor], announced_activity: announced_activity}))
end
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defp activity_to_status(activity, opts) do
actor = get_in(activity.data, ["actor"])
user = User.get_cached_by_ap_id(actor)
# mentioned_users = Repo.all(from user in User, where: user.ap_id in ^activity.data["to"])
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mentioned_users = Enum.map(activity.data["to"] || [], fn (ap_id) ->
User.get_cached_by_ap_id(ap_id)
end)
|> Enum.filter(&(&1))
ActivityRepresenter.to_map(activity, Map.merge(opts, %{user: user, mentioned: mentioned_users}))
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end
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defp make_date do
DateTime.utc_now() |> DateTime.to_iso8601
end
def context_to_conversation_id(context) do
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with %Object{id: id} <- Object.get_cached_by_ap_id(context) do
id
else _e ->
changeset = Object.context_mapping(context)
{:ok, %{id: id}} = Repo.insert(changeset)
id
end
end
def conversation_id_to_context(id) do
with %Object{data: %{"id" => context}} <- Repo.get(Object, id) do
context
else _e ->
{:error, "No such conversation"}
end
end
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def get_external_profile(for_user, uri) do
with {:ok, %User{} = user} <- OStatus.find_or_make_user(uri) do
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{:ok, UserRepresenter.to_map(user, %{for: for_user})}
else _e ->
{:error, "Couldn't find user"}
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end
end
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end