7a15661563368482806da836f73e8f14c2500c73
[akkoma] / lib / pleroma / web / activity_pub / activity_pub.ex
1 defmodule Pleroma.Web.ActivityPub.ActivityPub do
2 alias Pleroma.{Activity, Repo, Object, Upload, User, Web, Notification}
3 alias Ecto.{Changeset, UUID}
4 import Ecto.Query
5 import Pleroma.Web.ActivityPub.Utils
6 require Logger
7
8 def insert(map, local \\ true) when is_map(map) do
9 with nil <- Activity.get_by_ap_id(map["id"]),
10 map <- lazy_put_activity_defaults(map),
11 :ok <- insert_full_object(map) do
12 {:ok, activity} = Repo.insert(%Activity{data: map, local: local})
13 Notification.create_notifications(activity)
14 {:ok, activity}
15 else
16 %Activity{} = activity -> {:ok, activity}
17 error -> {:error, error}
18 end
19 end
20
21 def create(to, actor, context, object, additional \\ %{}, published \\ nil, local \\ true) do
22 with create_data <- make_create_data(%{to: to, actor: actor, published: published, context: context, object: object}, additional),
23 {:ok, activity} <- insert(create_data, local),
24 :ok <- maybe_federate(activity) do
25 {:ok, activity}
26 end
27 end
28
29 # TODO: This is weird, maybe we shouldn't check here if we can make the activity.
30 def like(%User{ap_id: ap_id} = user, %Object{data: %{"id" => id}} = object, activity_id \\ nil, local \\ true) do
31 with nil <- get_existing_like(ap_id, object),
32 like_data <- make_like_data(user, object, activity_id),
33 {:ok, activity} <- insert(like_data, local),
34 {:ok, object} <- add_like_to_object(activity, object),
35 :ok <- maybe_federate(activity) do
36 {:ok, activity, object}
37 else
38 %Activity{} = activity -> {:ok, activity, object}
39 error -> {:error, error}
40 end
41 end
42
43 def unlike(%User{} = actor, %Object{} = object) do
44 with %Activity{} = activity <- get_existing_like(actor.ap_id, object),
45 {:ok, _activity} <- Repo.delete(activity),
46 {:ok, object} <- remove_like_from_object(activity, object) do
47 {:ok, object}
48 else _e -> {:ok, object}
49 end
50 end
51
52 def announce(%User{ap_id: ap_id} = user, %Object{data: %{"id" => id}} = object, activity_id \\ nil, local \\ true) do
53 with announce_data <- make_announce_data(user, object, activity_id),
54 {:ok, activity} <- insert(announce_data, local),
55 {:ok, object} <- add_announce_to_object(activity, object),
56 :ok <- maybe_federate(activity) do
57 {:ok, activity, object}
58 else
59 error -> {:error, error}
60 end
61 end
62
63 def follow(follower, followed, activity_id \\ nil, local \\ true) do
64 with data <- make_follow_data(follower, followed, activity_id),
65 {:ok, activity} <- insert(data, local),
66 :ok <- maybe_federate(activity) do
67 {:ok, activity}
68 end
69 end
70
71 def unfollow(follower, followed, local \\ true) do
72 with %Activity{} = follow_activity <- fetch_latest_follow(follower, followed),
73 unfollow_data <- make_unfollow_data(follower, followed, follow_activity),
74 {:ok, activity} <- insert(unfollow_data, local),
75 :ok, maybe_federate(activity) do
76 {:ok, activity}
77 end
78 end
79
80 def delete(%Object{data: %{"id" => id, "actor" => actor}} = object, local \\ true) do
81 user = User.get_cached_by_ap_id(actor)
82 data = %{
83 "type" => "Delete",
84 "actor" => actor,
85 "object" => id,
86 "to" => [user.follower_address, "https://www.w3.org/ns/activitystreams#Public"]
87 }
88 with Repo.delete(object),
89 Repo.delete_all(Activity.all_non_create_by_object_ap_id_q(id)),
90 Repo.delete_all(Activity.all_by_object_ap_id_q(id)),
91 {:ok, activity} <- insert(data, local),
92 :ok <- maybe_federate(activity) do
93 {:ok, activity}
94 end
95 end
96
97 def fetch_activities_for_context(context) do
98 query = from activity in Activity,
99 where: fragment("?->>'type' = ? and ?->>'context' = ?", activity.data, "Create", activity.data, ^context),
100 order_by: [desc: :id]
101 Repo.all(query)
102 end
103
104 def fetch_public_activities(opts \\ %{}) do
105 public = ["https://www.w3.org/ns/activitystreams#Public"]
106 fetch_activities(public, opts)
107 end
108
109 defp restrict_since(query, %{"since_id" => since_id}) do
110 from activity in query, where: activity.id > ^since_id
111 end
112 defp restrict_since(query, _), do: query
113
114 defp restrict_tag(query, %{"tag" => tag}) do
115 from activity in query,
116 where: fragment("? <@ (? #> '{\"object\",\"tag\"}')", ^tag, activity.data)
117 end
118 defp restrict_tag(query, _), do: query
119
120 defp restrict_recipients(query, recipients) do
121 from activity in query,
122 where: fragment("?->'to' \\\?| ? ", activity.data, ^recipients)
123 end
124
125 defp restrict_local(query, %{"local_only" => true}) do
126 from activity in query, where: activity.local == true
127 end
128 defp restrict_local(query, _), do: query
129
130 defp restrict_max(query, %{"max_id" => max_id}) do
131 from activity in query, where: activity.id < ^max_id
132 end
133 defp restrict_max(query, _), do: query
134
135 defp restrict_actor(query, %{"actor_id" => actor_id}) do
136 from activity in query,
137 where: fragment("?->>'actor' = ?", activity.data, ^actor_id)
138 end
139 defp restrict_actor(query, _), do: query
140
141 defp restrict_type(query, %{"type" => type}) when is_binary(type) do
142 restrict_type(query, %{"type" => [type]})
143 end
144 defp restrict_type(query, %{"type" => type}) do
145 from activity in query,
146 where: fragment("?->>'type' = ANY(?)", activity.data, ^type)
147 end
148 defp restrict_type(query, _), do: query
149
150 defp restrict_favorited_by(query, %{"favorited_by" => ap_id}) do
151 from activity in query,
152 where: fragment("? <@ (? #> '{\"object\",\"likes\"}')", ^ap_id, activity.data)
153 end
154 defp restrict_favorited_by(query, _), do: query
155
156 def fetch_activities(recipients, opts \\ %{}) do
157 base_query = from activity in Activity,
158 limit: 20,
159 order_by: [desc: :id]
160
161 base_query
162 |> restrict_recipients(recipients)
163 |> restrict_tag(opts)
164 |> restrict_since(opts)
165 |> restrict_local(opts)
166 |> restrict_max(opts)
167 |> restrict_actor(opts)
168 |> restrict_type(opts)
169 |> restrict_favorited_by(opts)
170 |> Repo.all
171 |> Enum.reverse
172 end
173
174 def upload(file) do
175 data = Upload.store(file)
176 Repo.insert(%Object{data: data})
177 end
178 end