138 lines
3.9 KiB
Elixir
138 lines
3.9 KiB
Elixir
# Pleroma: A lightweight social networking server
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# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
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# SPDX-License-Identifier: AGPL-3.0-only
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defmodule Pleroma.Export do
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alias Pleroma.Activity
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alias Pleroma.Bookmark
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alias Pleroma.User
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alias Pleroma.Web.ActivityPub.ActivityPub
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alias Pleroma.Web.ActivityPub.Transmogrifier
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alias Pleroma.Web.ActivityPub.UserView
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import Ecto.Query
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@files ['actor.json', 'outbox.json', 'likes.json', 'bookmarks.json']
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def run(user) do
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with {:ok, path} <- create_dir(user),
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:ok <- actor(path, user),
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:ok <- statuses(path, user),
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:ok <- likes(path, user),
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:ok <- bookmarks(path, user),
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{:ok, zip_path} <- :zip.create('#{path}.zip', @files, cwd: path),
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{:ok, _} <- File.rm_rf(path) do
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{:ok, :binary.list_to_bin(zip_path)}
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end
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end
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def upload(zip_path) do
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uploader = Pleroma.Config.get([Pleroma.Upload, :uploader])
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file_name = zip_path |> String.split("/") |> List.last()
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id = Ecto.UUID.generate()
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upload = %Pleroma.Upload{
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id: id,
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name: file_name,
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tempfile: zip_path,
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content_type: "application/zip",
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path: id <> "/" <> file_name
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}
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with :ok <- uploader.put_file(upload), :ok <- File.rm(zip_path) do
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{:ok, upload}
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end
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end
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defp actor(dir, user) do
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with {:ok, json} <-
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UserView.render("user.json", %{user: user})
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|> Map.merge(%{"likes" => "likes.json", "bookmarks" => "bookmarks.json"})
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|> Jason.encode() do
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File.write(dir <> "/actor.json", json)
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end
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end
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defp create_dir(user) do
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datetime = Calendar.NaiveDateTime.Format.iso8601_basic(NaiveDateTime.utc_now())
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dir = Path.join(System.tmp_dir!(), "archive-#{user.id}-#{datetime}")
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with :ok <- File.mkdir(dir), do: {:ok, dir}
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end
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defp write_header(file, name) do
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IO.write(
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file,
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"""
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{
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"@context": "https://www.w3.org/ns/activitystreams",
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"id": "#{name}.json",
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"type": "OrderedCollection",
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"orderedItems": [
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"""
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)
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end
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defp write(query, dir, name, fun) do
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path = dir <> "/#{name}.json"
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with {:ok, file} <- File.open(path, [:write, :utf8]),
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:ok <- write_header(file, name) do
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counter = :counters.new(1, [])
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query
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|> Pleroma.RepoStreamer.chunk_stream(100)
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|> Stream.each(fn items ->
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Enum.each(items, fn i ->
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with {:ok, str} <- fun.(i),
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:ok <- IO.write(file, str <> ",\n") do
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:counters.add(counter, 1, 1)
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end
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end)
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end)
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|> Stream.run()
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total = :counters.get(counter, 1)
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with :ok <- :file.pwrite(file, {:eof, -2}, "\n],\n \"totalItems\": #{total}}") do
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File.close(file)
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end
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end
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end
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defp bookmarks(dir, %{id: user_id} = _user) do
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Bookmark
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|> where(user_id: ^user_id)
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|> join(:inner, [b], activity in assoc(b, :activity))
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|> select([b, a], %{id: b.id, object: fragment("(?)->>'object'", a.data)})
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|> write(dir, "bookmarks", fn a -> {:ok, "\"#{a.object}\""} end)
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end
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defp likes(dir, user) do
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user.ap_id
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|> Activity.Queries.by_actor()
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|> Activity.Queries.by_type("Like")
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|> select([like], %{id: like.id, object: fragment("(?)->>'object'", like.data)})
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|> write(dir, "likes", fn a -> {:ok, "\"#{a.object}\""} end)
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end
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defp statuses(dir, user) do
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opts =
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%{}
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|> Map.put(:type, ["Create", "Announce"])
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|> Map.put(:blocking_user, user)
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|> Map.put(:muting_user, user)
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|> Map.put(:reply_filtering_user, user)
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|> Map.put(:announce_filtering_user, user)
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|> Map.put(:user, user)
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[[user.ap_id], User.following(user), Pleroma.List.memberships(user)]
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|> Enum.concat()
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|> ActivityPub.fetch_activities_query(opts)
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|> write(dir, "outbox", fn a ->
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with {:ok, activity} <- Transmogrifier.prepare_outgoing(a.data) do
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activity |> Map.delete("@context") |> Jason.encode()
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end
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end)
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end
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end
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