1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
|
# Pleroma: A lightweight social networking server
# Copyright © 2017-2021 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.UserRelationship do
use Ecto.Schema
import Ecto.Changeset
import Ecto.Query
alias Ecto.Changeset
alias Pleroma.FollowingRelationship
alias Pleroma.Repo
alias Pleroma.User
alias Pleroma.UserRelationship
schema "user_relationships" do
belongs_to(:source, User, type: FlakeId.Ecto.CompatType)
belongs_to(:target, User, type: FlakeId.Ecto.CompatType)
field(:relationship_type, Pleroma.UserRelationship.Type)
timestamps(updated_at: false)
end
for relationship_type <- Keyword.keys(Pleroma.UserRelationship.Type.__enum_map__()) do
# `def create_block/2`, `def create_mute/2`, `def create_reblog_mute/2`,
# `def create_notification_mute/2`, `def create_inverse_subscription/2`
def unquote(:"create_#{relationship_type}")(source, target),
do: create(unquote(relationship_type), source, target)
# `def delete_block/2`, `def delete_mute/2`, `def delete_reblog_mute/2`,
# `def delete_notification_mute/2`, `def delete_inverse_subscription/2`
def unquote(:"delete_#{relationship_type}")(source, target),
do: delete(unquote(relationship_type), source, target)
# `def block_exists?/2`, `def mute_exists?/2`, `def reblog_mute_exists?/2`,
# `def notification_mute_exists?/2`, `def inverse_subscription_exists?/2`
def unquote(:"#{relationship_type}_exists?")(source, target),
do: exists?(unquote(relationship_type), source, target)
end
def user_relationship_types, do: Keyword.keys(user_relationship_mappings())
def user_relationship_mappings, do: Pleroma.UserRelationship.Type.__enum_map__()
def changeset(%UserRelationship{} = user_relationship, params \\ %{}) do
user_relationship
|> cast(params, [:relationship_type, :source_id, :target_id])
|> validate_required([:relationship_type, :source_id, :target_id])
|> unique_constraint(:relationship_type,
name: :user_relationships_source_id_relationship_type_target_id_index
)
|> validate_not_self_relationship()
end
def exists?(relationship_type, %User{} = source, %User{} = target) do
UserRelationship
|> where(relationship_type: ^relationship_type, source_id: ^source.id, target_id: ^target.id)
|> Repo.exists?()
end
def create(relationship_type, %User{} = source, %User{} = target) do
%UserRelationship{}
|> changeset(%{
relationship_type: relationship_type,
source_id: source.id,
target_id: target.id
})
|> Repo.insert(
on_conflict: {:replace_all_except, [:id]},
conflict_target: [:source_id, :relationship_type, :target_id]
)
end
def delete(relationship_type, %User{} = source, %User{} = target) do
attrs = %{relationship_type: relationship_type, source_id: source.id, target_id: target.id}
case Repo.get_by(UserRelationship, attrs) do
%UserRelationship{} = existing_record -> Repo.delete(existing_record)
nil -> {:ok, nil}
end
end
def dictionary(
source_users,
target_users,
source_to_target_rel_types \\ nil,
target_to_source_rel_types \\ nil
)
def dictionary(
_source_users,
_target_users,
[] = _source_to_target_rel_types,
[] = _target_to_source_rel_types
) do
[]
end
def dictionary(
source_users,
target_users,
source_to_target_rel_types,
target_to_source_rel_types
)
when is_list(source_users) and is_list(target_users) do
source_user_ids = User.binary_id(source_users)
target_user_ids = User.binary_id(target_users)
get_rel_type_codes = fn rel_type -> user_relationship_mappings()[rel_type] end
source_to_target_rel_types =
Enum.map(source_to_target_rel_types || user_relationship_types(), &get_rel_type_codes.(&1))
target_to_source_rel_types =
Enum.map(target_to_source_rel_types || user_relationship_types(), &get_rel_type_codes.(&1))
__MODULE__
|> where(
fragment(
"(source_id = ANY(?) AND target_id = ANY(?) AND relationship_type = ANY(?)) OR \
(source_id = ANY(?) AND target_id = ANY(?) AND relationship_type = ANY(?))",
^source_user_ids,
^target_user_ids,
^source_to_target_rel_types,
^target_user_ids,
^source_user_ids,
^target_to_source_rel_types
)
)
|> select([ur], [ur.relationship_type, ur.source_id, ur.target_id])
|> Repo.all()
end
def exists?(dictionary, rel_type, source, target, func) do
cond do
is_nil(source) or is_nil(target) ->
false
dictionary ->
[rel_type, source.id, target.id] in dictionary
true ->
func.(source, target)
end
end
@doc ":relationships option for StatusView / AccountView / NotificationView"
def view_relationships_option(reading_user, actors, opts \\ [])
def view_relationships_option(nil = _reading_user, _actors, _opts) do
%{user_relationships: [], following_relationships: []}
end
def view_relationships_option(%User{} = reading_user, actors, opts) do
{source_to_target_rel_types, target_to_source_rel_types} =
case opts[:subset] do
:source_mutes ->
# Used for statuses rendering (FE needs `muted` flag for each status when statuses load)
{[:mute], []}
nil ->
{[:block, :mute, :notification_mute, :reblog_mute], [:block, :inverse_subscription]}
unknown ->
raise "Unsupported :subset option value: #{inspect(unknown)}"
end
user_relationships =
UserRelationship.dictionary(
[reading_user],
actors,
source_to_target_rel_types,
target_to_source_rel_types
)
following_relationships =
case opts[:subset] do
:source_mutes ->
[]
nil ->
FollowingRelationship.all_between_user_sets([reading_user], actors)
unknown ->
raise "Unsupported :subset option value: #{inspect(unknown)}"
end
%{user_relationships: user_relationships, following_relationships: following_relationships}
end
defp validate_not_self_relationship(%Changeset{} = changeset) do
changeset
|> validate_source_id_target_id_inequality()
|> validate_target_id_source_id_inequality()
end
defp validate_source_id_target_id_inequality(%Changeset{} = changeset) do
validate_change(changeset, :source_id, fn _, source_id ->
if source_id == get_field(changeset, :target_id) do
[source_id: "can't be equal to target_id"]
else
[]
end
end)
end
defp validate_target_id_source_id_inequality(%Changeset{} = changeset) do
validate_change(changeset, :target_id, fn _, target_id ->
if target_id == get_field(changeset, :source_id) do
[target_id: "can't be equal to source_id"]
else
[]
end
end)
end
end
|
