akkoma/lib/pleroma/object/updater.ex
FloatingGhost 98cb255d12 Support elixir1.15
OTP builds to 1.15

Changelog entry

Ensure policies are fully loaded

Fix :warn

use main branch for linkify

Fix warn in tests

Migrations for phoenix 1.17

Revert "Migrations for phoenix 1.17"

This reverts commit 6a3b2f15b74ea5e33150529385215b7a531f3999.

Oban upgrade

Add default empty whitelist

mix format

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OTP 26 tests for 1.15

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use assert_recieve

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FIx some uploader issues

Fix tests
2023-08-03 17:44:09 +01:00

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7.2 KiB
Elixir

# Pleroma: A lightweight social networking server
# Copyright © 2017-2022 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Object.Updater do
require Pleroma.Constants
def update_content_fields(orig_object_data, updated_object) do
Pleroma.Constants.status_updatable_fields()
|> Enum.reduce(
%{data: orig_object_data, updated: false},
fn field, %{data: data, updated: updated} ->
updated =
updated or
(field != "updated" and
Map.get(updated_object, field) != Map.get(orig_object_data, field))
data =
if Map.has_key?(updated_object, field) do
Map.put(data, field, updated_object[field])
else
Map.drop(data, [field])
end
%{data: data, updated: updated}
end
)
end
def maybe_history(object) do
with history <- Map.get(object, "formerRepresentations"),
true <- is_map(history),
"OrderedCollection" <- Map.get(history, "type"),
true <- is_list(Map.get(history, "orderedItems")),
true <- is_integer(Map.get(history, "totalItems")) do
history
else
_ -> nil
end
end
def history_for(object) do
with history when not is_nil(history) <- maybe_history(object) do
history
else
_ -> history_skeleton()
end
end
defp history_skeleton do
%{
"type" => "OrderedCollection",
"totalItems" => 0,
"orderedItems" => []
}
end
def maybe_update_history(
updated_object,
orig_object_data,
opts
) do
updated = opts[:updated]
use_history_in_new_object? = opts[:use_history_in_new_object?]
if not updated do
%{updated_object: updated_object, used_history_in_new_object?: false}
else
# Put edit history
# Note that we may have got the edit history by first fetching the object
{new_history, used_history_in_new_object?} =
with true <- use_history_in_new_object?,
updated_history when not is_nil(updated_history) <- maybe_history(opts[:new_data]) do
{updated_history, true}
else
_ ->
history = history_for(orig_object_data)
latest_history_item =
orig_object_data
|> Map.drop(["id", "formerRepresentations"])
updated_history =
history
|> Map.put("orderedItems", [latest_history_item | history["orderedItems"]])
|> Map.put("totalItems", history["totalItems"] + 1)
{updated_history, false}
end
updated_object =
updated_object
|> Map.put("formerRepresentations", new_history)
%{updated_object: updated_object, used_history_in_new_object?: used_history_in_new_object?}
end
end
defp maybe_update_poll(to_be_updated, updated_object) do
choice_key = fn data ->
if Map.has_key?(data, "anyOf"), do: "anyOf", else: "oneOf"
end
with true <- to_be_updated["type"] == "Question",
key <- choice_key.(updated_object),
true <- key == choice_key.(to_be_updated),
orig_choices <- to_be_updated[key] |> Enum.map(&Map.drop(&1, ["replies"])),
new_choices <- updated_object[key] |> Enum.map(&Map.drop(&1, ["replies"])),
true <- orig_choices == new_choices do
# Choices are the same, but counts are different
to_be_updated
|> Map.put(key, updated_object[key])
else
# Choices (or vote type) have changed, do not allow this
_ -> to_be_updated
end
end
# This calculates the data to be sent as the object of an Update.
# new_data's formerRepresentations is not considered.
# formerRepresentations is added to the returned data.
def make_update_object_data(original_data, new_data, date) do
%{data: updated_data, updated: updated} =
original_data
|> update_content_fields(new_data)
if not updated do
updated_data
else
%{updated_object: updated_data} =
updated_data
|> maybe_update_history(original_data,
updated: updated,
use_history_in_new_object?: false
)
updated_data
|> Map.put("updated", date)
end
end
# This calculates the data of the new Object from an Update.
# new_data's formerRepresentations is considered.
def make_new_object_data_from_update_object(original_data, new_data) do
update_is_reasonable =
with {_, updated} when not is_nil(updated) <- {:cur_updated, new_data["updated"]},
{_, {:ok, updated_time, _}} <- {:cur_updated, DateTime.from_iso8601(updated)},
{_, last_updated} when not is_nil(last_updated) <-
{:last_updated, original_data["updated"] || original_data["published"]},
{_, {:ok, last_updated_time, _}} <-
{:last_updated, DateTime.from_iso8601(last_updated)},
:gt <- DateTime.compare(updated_time, last_updated_time) do
:update_everything
else
# only allow poll updates
{:cur_updated, _} -> :no_content_update
:eq -> :no_content_update
# allow all updates
{:last_updated, _} -> :update_everything
# allow no updates
_ -> false
end
%{
updated_object: updated_data,
used_history_in_new_object?: used_history_in_new_object?,
updated: updated
} =
if update_is_reasonable == :update_everything do
%{data: updated_data, updated: updated} =
original_data
|> update_content_fields(new_data)
updated_data
|> maybe_update_history(original_data,
updated: updated,
use_history_in_new_object?: true,
new_data: new_data
)
|> Map.put(:updated, updated)
else
%{
updated_object: original_data,
used_history_in_new_object?: false,
updated: false
}
end
updated_data =
if update_is_reasonable != false do
updated_data
|> maybe_update_poll(new_data)
else
updated_data
end
%{
updated_data: updated_data,
updated: updated,
used_history_in_new_object?: used_history_in_new_object?
}
end
def for_each_history_item(%{"orderedItems" => items} = history, _object, fun) do
new_items =
Enum.map(items, fun)
|> Enum.reduce_while(
{:ok, []},
fn
{:ok, item}, {:ok, acc} -> {:cont, {:ok, acc ++ [item]}}
e, _acc -> {:halt, e}
end
)
case new_items do
{:ok, items} -> {:ok, Map.put(history, "orderedItems", items)}
e -> e
end
end
def for_each_history_item(history, _, _) do
{:ok, history}
end
def do_with_history(object, fun) do
with history <- object["formerRepresentations"],
object <- Map.drop(object, ["formerRepresentations"]),
{_, {:ok, object}} <- {:main_body, fun.(object)},
{_, {:ok, history}} <- {:history_items, for_each_history_item(history, object, fun)} do
object =
if history do
Map.put(object, "formerRepresentations", history)
else
object
end
{:ok, object}
else
{:main_body, e} -> e
{:history_items, e} -> e
end
end
end