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

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
parent 714bf0cb23
commit 787e30c5fd
7 changed files with 363 additions and 41 deletions
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79
lib/pleroma/web/activity_pub/builder.ex
View File

@ -16,6 +16,7 @@ defmodule Pleroma.Web.ActivityPub.Builder do
alias Pleroma.Web.ActivityPub.Utils
alias Pleroma.Web.ActivityPub.Visibility
alias Pleroma.Web.CommonAPI.ActivityDraft
alias Pleroma.Web.Endpoint
require Pleroma.Constants
@ -54,13 +55,85 @@ def follow(follower, followed) do
{:ok, data, []}
end
defp unicode_emoji_react(_object, data, emoji) do
data
|> Map.put("content", emoji)
|> Map.put("type", "EmojiReact")
end
defp add_emoji_content(data, emoji, url) do
data
|> Map.put("content", Emoji.maybe_quote(emoji))
|> Map.put("type", "EmojiReact")
|> Map.put("tag", [
%{}
|> Map.put("id", url)
|> Map.put("type", "Emoji")
|> Map.put("name", Emoji.maybe_quote(emoji))
|> Map.put(
"icon",
%{}
|> Map.put("type", "Image")
|> Map.put("url", url)
)
])
end
defp remote_custom_emoji_react(
%{data: %{"reactions" => existing_reactions}},
data,
emoji
) do
[emoji_code, instance] = String.split(Emoji.stripped_name(emoji), "@")
matching_reaction =
Enum.find(
existing_reactions,
fn [name, _, url] ->
url = URI.parse(url)
url.host == instance && name == emoji_code
end
)
if matching_reaction do
[name, _, url] = matching_reaction
add_emoji_content(data, name, url)
else
{:error, "Could not react"}
end
end
defp remote_custom_emoji_react(_object, _data, _emoji) do
{:error, "Could not react"}
end
defp local_custom_emoji_react(data, emoji) do
with %{} = emojo <- Emoji.get(emoji) do
path = emojo |> Map.get(:file)
url = "#{Endpoint.url()}#{path}"
add_emoji_content(data, emojo.code, url)
else
_ -> {:error, "Emoji does not exist"}
end
end
defp custom_emoji_react(object, data, emoji) do
if String.contains?(emoji, "@") do
remote_custom_emoji_react(object, data, emoji)
else
local_custom_emoji_react(data, emoji)
end
end
@spec emoji_react(User.t(), Object.t(), String.t()) :: {:ok, map(), keyword()}
def emoji_react(actor, object, emoji) do
with {:ok, data, meta} <- object_action(actor, object) do
data =
data
|> Map.put("content", emoji)
|> Map.put("type", "EmojiReact")
if Emoji.is_unicode_emoji?(emoji) do
unicode_emoji_react(object, data, emoji)
else
custom_emoji_react(object, data, emoji)
end
{:ok, data, meta}
end

55
lib/pleroma/web/activity_pub/object_validators/emoji_react_validator.ex
View File

@ -5,6 +5,7 @@
defmodule Pleroma.Web.ActivityPub.ObjectValidators.EmojiReactValidator do
use Ecto.Schema
alias Pleroma.Emoji
alias Pleroma.Object
alias Pleroma.Web.ActivityPub.ObjectValidators.CommonFixes
@ -12,6 +13,7 @@ defmodule Pleroma.Web.ActivityPub.ObjectValidators.EmojiReactValidator do
import Pleroma.Web.ActivityPub.ObjectValidators.CommonValidations
@primary_key false
@emoji_regex ~r/:[A-Za-z0-9_-]+(@.+)?:/
embedded_schema do
quote do
@ -19,6 +21,7 @@ defmodule Pleroma.Web.ActivityPub.ObjectValidators.EmojiReactValidator do
import Elixir.Pleroma.Web.ActivityPub.ObjectValidators.CommonFields
message_fields()
activity_fields()
tag_fields()
end
end
@ -43,7 +46,8 @@ def cast_data(data) do
def changeset(struct, data) do
struct
|> cast(data, __schema__(:fields))
|> cast(data, __schema__(:fields) -- [:tag])
|> cast_embed(:tag)
end
defp fix(data) do
@ -53,12 +57,21 @@ defp fix(data) do
|> CommonFixes.fix_actor()
|> CommonFixes.fix_activity_addressing()
with %Object{} = object <- Object.normalize(data["object"]) do
data
|> CommonFixes.fix_activity_context(object)
|> CommonFixes.fix_object_action_recipients(object)
else
_ -> data
data =
if Map.has_key?(data, "tag") do
data
else
Map.put(data, "tag", [])
end
case Object.normalize(data["object"]) do
%Object{} = object ->
data
|> CommonFixes.fix_activity_context(object)
|> CommonFixes.fix_object_action_recipients(object)
_ ->
data
end
end
@ -79,14 +92,37 @@ defp fix_emoji_qualification(%{"content" => emoji} = data) do
defp fix_emoji_qualification(data), do: data
defp matches_shortcode?(nil), do: false
defp matches_shortcode?(s), do: Regex.match?(@emoji_regex, s)
defp validate_emoji(cng) do
content = get_field(cng, :content)
if Pleroma.Emoji.is_unicode_emoji?(content) do
if Emoji.is_unicode_emoji?(content) || matches_shortcode?(content) do
cng
else
cng
|> add_error(:content, "must be a single character emoji")
|> add_error(:content, "is not a valid emoji")
end
end
defp maybe_validate_tag_presence(cng) do
content = get_field(cng, :content)
if Emoji.is_unicode_emoji?(content) do
cng
else
tag = get_field(cng, :tag)
emoji_name = Emoji.stripped_name(content)
case tag do
[%{name: ^emoji_name, type: "Emoji", icon: %{url: _}}] ->
cng
_ ->
cng
|> add_error(:tag, "does not contain an Emoji tag")
end
end
end
@ -97,5 +133,6 @@ defp validate_data(data_cng) do
|> validate_actor_presence()
|> validate_object_presence()
|> validate_emoji()
|> maybe_validate_tag_presence()
end
end

70
lib/pleroma/web/activity_pub/utils.ex
View File

@ -325,21 +325,29 @@ def update_element_in_object(property, element, object, count \\ nil) 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 @@ def add_emoji_reaction_to_object(
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 @@ def remove_emoji_reaction_from_object(
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 @@ def fetch_latest_undo(%User{ap_id: ap_id}) 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 """

12
lib/pleroma/web/mastodon_api/views/status_view.ex
View File

@ -340,8 +340,8 @@ def render("show.json", %{activity: %{data: %{"object" => _object}} = activity}
opts[:for],
Map.get(opts, :with_muted, false)
)
|> Stream.map(fn {emoji, users} ->
build_emoji_map(emoji, users, opts[:for])
|> Stream.map(fn {emoji, users, url} ->
build_emoji_map(emoji, users, url, opts[:for])
end)
|> Enum.to_list()
@ -702,11 +702,13 @@ defp pin_data(%Object{data: %{"id" => object_id}}, %User{pinned_objects: pinned_
end
end
defp build_emoji_map(emoji, users, current_user) do
defp build_emoji_map(emoji, users, url, current_user) do
%{
name: emoji,
name: Pleroma.Web.PleromaAPI.EmojiReactionView.emoji_name(emoji, url),
count: length(users),
me: !!(current_user && current_user.ap_id in users)
url: MediaProxy.url(url),
me: !!(current_user && current_user.ap_id in users),
account_ids: Enum.map(users, fn user -> User.get_cached_by_ap_id(user).id end)
}
end

21
lib/pleroma/web/pleroma_api/controllers/emoji_reaction_controller.ex
View File

@ -50,29 +50,35 @@ def filter_allowed_users(reactions, user, with_muted) do
if not with_muted, do: User.cached_muted_users_ap_ids(user), else: []
end
filter_emoji = fn emoji, users ->
filter_emoji = fn emoji, users, url ->
case Enum.reject(users, &(&1 in exclude_ap_ids)) do
[] -> nil
users -> {emoji, users}
users -> {emoji, users, url}
end
end
reactions
|> Stream.map(fn
[emoji, users] when is_list(users) -> filter_emoji.(emoji, users)
{emoji, users} when is_list(users) -> filter_emoji.(emoji, users)
[emoji, users, url] when is_list(users) -> filter_emoji.(emoji, users, url)
{emoji, users, url} when is_list(users) -> filter_emoji.(emoji, users, url)
{emoji, users} when is_list(users) -> filter_emoji.(emoji, users, nil)
_ -> nil
end)
|> Stream.reject(&is_nil/1)
end
defp filter(reactions, %{emoji: emoji}) when is_binary(emoji) do
Enum.filter(reactions, fn [e, _] -> e == emoji end)
Enum.filter(reactions, fn [e, _, _] -> e == emoji end)
end
defp filter(reactions, _), do: reactions
def create(%{assigns: %{user: user}} = conn, %{id: activity_id, emoji: emoji}) do
emoji =
emoji
|> Pleroma.Emoji.fully_qualify_emoji()
|> Pleroma.Emoji.maybe_quote()
with {:ok, _activity} <- CommonAPI.react_with_emoji(activity_id, user, emoji) do
activity = Activity.get_by_id(activity_id)
@ -83,6 +89,11 @@ def create(%{assigns: %{user: user}} = conn, %{id: activity_id, emoji: emoji}) d
end
def delete(%{assigns: %{user: user}} = conn, %{id: activity_id, emoji: emoji}) do
emoji =
emoji
|> Pleroma.Emoji.fully_qualify_emoji()
|> Pleroma.Emoji.maybe_quote()
with {:ok, _activity} <- CommonAPI.unreact_with_emoji(activity_id, user, emoji) do
activity = Activity.get_by_id(activity_id)

18
lib/pleroma/web/pleroma_api/views/emoji_reaction_view.ex
View File

@ -7,17 +7,31 @@ defmodule Pleroma.Web.PleromaAPI.EmojiReactionView do
alias Pleroma.Web.MastodonAPI.AccountView
def emoji_name(emoji, nil), do: emoji
alias Pleroma.Web.MediaProxy
def emoji_name(emoji, url) do
url = URI.parse(url)
if url.host == Pleroma.Web.Endpoint.host() do
emoji
else
"#{emoji}@#{url.host}"
end
end
def render("index.json", %{emoji_reactions: emoji_reactions} = opts) do
render_many(emoji_reactions, __MODULE__, "show.json", opts)
end
def render("show.json", %{emoji_reaction: {emoji, user_ap_ids}, user: user}) do
def render("show.json", %{emoji_reaction: {emoji, user_ap_ids, url}, user: user}) do
users = fetch_users(user_ap_ids)
%{
name: emoji,
name: emoji_name(emoji, url),
count: length(users),
accounts: render(AccountView, "index.json", users: users, for: user),
url: MediaProxy.url(url),
me: !!(user && user.ap_id in user_ap_ids)
}
end

149
test/pleroma/web/pleroma_api/controllers/emoji_reaction_controller_test.exs
View File

@ -17,23 +17,101 @@ test "PUT /api/v1/pleroma/statuses/:id/reactions/:emoji", %{conn: conn} do
user = insert(:user)
other_user = insert(:user)
{:ok, activity} = CommonAPI.post(user, %{status: "#cofe"})
note = insert(:note, user: user, data: %{"reactions" => [["👍", [other_user.ap_id], nil]]})
activity = insert(:note_activity, note: note, user: user)
result =
conn
|> assign(:user, other_user)
|> assign(:token, insert(:oauth_token, user: other_user, scopes: ["write:statuses"]))
|> put("/api/v1/pleroma/statuses/#{activity.id}/reactions/☕")
|> put("/api/v1/pleroma/statuses/#{activity.id}/reactions/\u26A0")
|> json_response_and_validate_schema(200)
# We return the status, but this our implementation detail.
assert %{"id" => id} = result
assert to_string(activity.id) == id
assert result["pleroma"]["emoji_reactions"] == [
%{"name" => "☕", "count" => 1, "me" => true}
%{
"name" => "👍",
"count" => 1,
"me" => true,
"url" => nil,
"account_ids" => [other_user.id]
},
%{
"name" => "\u26A0\uFE0F",
"count" => 1,
"me" => true,
"url" => nil,
"account_ids" => [other_user.id]
}
]
{:ok, activity} = CommonAPI.post(user, %{status: "#cofe"})
ObanHelpers.perform_all()
# Reacting with a custom emoji
result =
conn
|> assign(:user, other_user)
|> assign(:token, insert(:oauth_token, user: other_user, scopes: ["write:statuses"]))
|> put("/api/v1/pleroma/statuses/#{activity.id}/reactions/:dinosaur:")
|> json_response_and_validate_schema(200)
assert %{"id" => id} = result
assert to_string(activity.id) == id
assert result["pleroma"]["emoji_reactions"] == [
%{
"name" => "dinosaur",
"count" => 1,
"me" => true,
"url" => "http://localhost:4001/emoji/dino walking.gif",
"account_ids" => [other_user.id]
}
]
# Reacting with a remote emoji
note =
insert(:note,
user: user,
data: %{"reactions" => [["wow", [other_user.ap_id], "https://remote/emoji/wow"]]}
)
activity = insert(:note_activity, note: note, user: user)
result =
conn
|> assign(:user, user)
|> assign(:token, insert(:oauth_token, user: user, scopes: ["write:statuses"]))
|> put("/api/v1/pleroma/statuses/#{activity.id}/reactions/:wow@remote:")
|> json_response(200)
assert result["pleroma"]["emoji_reactions"] == [
%{
"name" => "wow@remote",
"count" => 2,
"me" => true,
"url" => "https://remote/emoji/wow",
"account_ids" => [user.id, other_user.id]
}
]
# Reacting with a remote custom emoji that hasn't been reacted with yet
note =
insert(:note,
user: user
)
activity = insert(:note_activity, note: note, user: user)
assert conn
|> assign(:user, user)
|> assign(:token, insert(:oauth_token, user: user, scopes: ["write:statuses"]))
|> put("/api/v1/pleroma/statuses/#{activity.id}/reactions/:wow@remote:")
|> json_response(400)
# Reacting with a non-emoji
assert conn
|> assign(:user, other_user)
@ -46,8 +124,21 @@ test "DELETE /api/v1/pleroma/statuses/:id/reactions/:emoji", %{conn: conn} do
user = insert(:user)
other_user = insert(:user)
{:ok, activity} = CommonAPI.post(user, %{status: "#cofe"})
note =
insert(:note,
user: user,
data: %{"reactions" => [["wow", [user.ap_id], "https://remote/emoji/wow"]]}
)
activity = insert(:note_activity, note: note, user: user)
ObanHelpers.perform_all()
{:ok, _reaction_activity} = CommonAPI.react_with_emoji(activity.id, other_user, "☕")
{:ok, _reaction_activity} = CommonAPI.react_with_emoji(activity.id, other_user, ":dinosaur:")
{:ok, _reaction_activity} =
CommonAPI.react_with_emoji(activity.id, other_user, ":wow@remote:")
ObanHelpers.perform_all()
@ -60,11 +151,47 @@ test "DELETE /api/v1/pleroma/statuses/:id/reactions/:emoji", %{conn: conn} do
assert %{"id" => id} = json_response_and_validate_schema(result, 200)
assert to_string(activity.id) == id
# Remove custom emoji
result =
conn
|> assign(:user, other_user)
|> assign(:token, insert(:oauth_token, user: other_user, scopes: ["write:statuses"]))
|> delete("/api/v1/pleroma/statuses/#{activity.id}/reactions/:dinosaur:")
assert %{"id" => id} = json_response_and_validate_schema(result, 200)
assert to_string(activity.id) == id
ObanHelpers.perform_all()
object = Object.get_by_ap_id(activity.data["object"])
assert object.data["reaction_count"] == 0
assert object.data["reaction_count"] == 2
# Remove custom remote emoji
result =
conn
|> assign(:user, other_user)
|> assign(:token, insert(:oauth_token, user: other_user, scopes: ["write:statuses"]))
|> delete("/api/v1/pleroma/statuses/#{activity.id}/reactions/:wow@remote:")
|> json_response(200)
assert result["pleroma"]["emoji_reactions"] == [
%{
"name" => "wow@remote",
"count" => 1,
"me" => false,
"url" => "https://remote/emoji/wow",
"account_ids" => [user.id]
}
]
# Remove custom remote emoji that hasn't been reacted with yet
assert conn
|> assign(:user, other_user)
|> assign(:token, insert(:oauth_token, user: other_user, scopes: ["write:statuses"]))
|> delete("/api/v1/pleroma/statuses/#{activity.id}/reactions/:zoop@remote:")
|> json_response(400)
end
test "GET /api/v1/pleroma/statuses/:id/reactions", %{conn: conn} do
@ -181,7 +308,15 @@ test "GET /api/v1/pleroma/statuses/:id/reactions/:emoji", %{conn: conn} do
{:ok, _} = CommonAPI.react_with_emoji(activity.id, other_user, "🎅")
{:ok, _} = CommonAPI.react_with_emoji(activity.id, other_user, "☕")
assert [%{"name" => "🎅", "count" => 1, "accounts" => [represented_user], "me" => false}] =
assert [
%{
"name" => "🎅",
"count" => 1,
"accounts" => [represented_user],
"me" => false,
"url" => nil
}
] =
conn
|> get("/api/v1/pleroma/statuses/#{activity.id}/reactions/🎅")
|> json_response_and_validate_schema(200)