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Allow reacting with remote emoji when they exist on the post (#200)

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Co-authored-by: FloatingGhost <hannah@coffee-and-dreams.uk>
Reviewed-on: https://akkoma.dev/AkkomaGang/akkoma/pulls/200
This commit is contained in:
floatingghost 2022-09-04 23:31:41 +00:00 • committed by Alexander Tumin
commit 787e30c5fd
7 changed files with 363 additions and 41 deletions
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70
lib/pleroma/web/activity_pub/utils.ex
View file

@ -325,21 +325,29 @@ defmodule Pleroma.Web.ActivityPub.Utils do
{:ok, Object.t()} | {:error, Ecto.Changeset.t()}
def add_emoji_reaction_to_object(
%Activity{data: %{"content" => emoji, "actor" => actor}},
%Activity{data: %{"content" => emoji, "actor" => actor}} = activity,
object
) do
reactions = get_cached_emoji_reactions(object)
emoji = Pleroma.Emoji.stripped_name(emoji)
url = emoji_url(emoji, activity)
new_reactions =
case Enum.find_index(reactions, fn [candidate, _] -> emoji == candidate end) do
case Enum.find_index(reactions, fn [candidate, _, candidate_url] ->
if is_nil(candidate_url) do
emoji == candidate
else
url == candidate_url
end
end) do
nil ->
reactions ++ [[emoji, [actor]]]
reactions ++ [[emoji, [actor], url]]
index ->
List.update_at(
reactions,
index,
fn [emoji, users] -> [emoji, Enum.uniq([actor | users])] end
fn [emoji, users, url] -> [emoji, Enum.uniq([actor | users]), url] end
)
end
@ -348,18 +356,40 @@ defmodule Pleroma.Web.ActivityPub.Utils do
update_element_in_object("reaction", new_reactions, object, count)
end
defp emoji_url(
name,
%Activity{
data: %{
"tag" => [
%{"type" => "Emoji", "name" => name, "icon" => %{"url" => url}}
]
}
}
),
do: url
defp emoji_url(_, _), do: nil
def emoji_count(reactions_list) do
Enum.reduce(reactions_list, 0, fn [_, users], acc -> acc + length(users) end)
Enum.reduce(reactions_list, 0, fn [_, users, _], acc -> acc + length(users) end)
end
def remove_emoji_reaction_from_object(
%Activity{data: %{"content" => emoji, "actor" => actor}},
%Activity{data: %{"content" => emoji, "actor" => actor}} = activity,
object
) do
emoji = Pleroma.Emoji.stripped_name(emoji)
reactions = get_cached_emoji_reactions(object)
url = emoji_url(emoji, activity)
new_reactions =
case Enum.find_index(reactions, fn [candidate, _] -> emoji == candidate end) do
case Enum.find_index(reactions, fn [candidate, _, candidate_url] ->
if is_nil(candidate_url) do
emoji == candidate
else
url == candidate_url
end
end) do
nil ->
reactions
@ -367,9 +397,9 @@ defmodule Pleroma.Web.ActivityPub.Utils do
List.update_at(
reactions,
index,
fn [emoji, users] -> [emoji, List.delete(users, actor)] end
fn [emoji, users, url] -> [emoji, List.delete(users, actor), url] end
)
|> Enum.reject(fn [_, users] -> Enum.empty?(users) end)
|> Enum.reject(fn [_, users, _] -> Enum.empty?(users) end)
end
count = emoji_count(new_reactions)
@ -489,17 +519,37 @@ defmodule Pleroma.Web.ActivityPub.Utils do
def get_latest_reaction(internal_activity_id, %{ap_id: ap_id}, emoji) do
%{data: %{"object" => object_ap_id}} = Activity.get_by_id(internal_activity_id)
emoji = Pleroma.Emoji.maybe_quote(emoji)
"EmojiReact"
|> Activity.Queries.by_type()
|> where(actor: ^ap_id)
|> where([activity], fragment("?->>'content' = ?", activity.data, ^emoji))
|> custom_emoji_discriminator(emoji)
|> Activity.Queries.by_object_id(object_ap_id)
|> order_by([activity], fragment("? desc nulls last", activity.id))
|> limit(1)
|> Repo.one()
end
defp custom_emoji_discriminator(query, emoji) do
if String.contains?(emoji, "@") do
stripped = Pleroma.Emoji.stripped_name(emoji)
[name, domain] = String.split(stripped, "@")
domain_pattern = "%" <> domain <> "%"
emoji_pattern = Pleroma.Emoji.maybe_quote(name)
query
|> where([activity], fragment("?->>'content' = ?
AND EXISTS (
SELECT FROM jsonb_array_elements(?->'tag') elem
WHERE elem->>'id' ILIKE ?
)", activity.data, ^emoji_pattern, activity.data, ^domain_pattern))
else
query
|> where([activity], fragment("?->>'content' = ?", activity.data, ^emoji))
end
end
#### Announce-related helpers
@doc """