This repository has been archived by the owner on Jul 11, 2024. It is now read-only.
-
-
Notifications
You must be signed in to change notification settings - Fork 71
/
msgfilter.go
150 lines (118 loc) · 3.37 KB
/
msgfilter.go
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
package std
import (
"context"
"strings"
"github.com/andersfylling/disgord"
)
func NewMsgFilter(ctx context.Context, client disgord.Session) (filter *msgFilter, err error) {
if filter, err = newMsgFilter(ctx, client); err != nil {
return nil, err
}
filter.s = client
return filter, nil
}
type CurrentUserRESTResource interface {
CurrentUser() disgord.CurrentUserQueryBuilder
}
func newMsgFilter(ctx context.Context, client CurrentUserRESTResource) (filter *msgFilter, err error) {
usr, err := client.CurrentUser().WithContext(ctx).Get()
if err != nil {
return nil, err
}
filter = &msgFilter{}
filter.botID = usr.ID
return filter, nil
}
type msgFilter struct {
s disgord.Session
botID disgord.Snowflake
prefix string
permissions disgord.PermissionBit
eitherPermissions disgord.PermissionBit
}
// SetPrefix set the prefix attribute which is used in StripPrefix, HasPrefix.
// Do not set the prefix to be a space, " ", as this will be trimmed when checking later.
func (f *msgFilter) SetPrefix(p string) {
f.prefix = p
}
func (f *msgFilter) ContainsBotMention(evt interface{}) interface{} {
var msg *disgord.Message
if msg = getMsg(evt); msg == nil {
return nil
}
for _, p := range []string{mentionString(f.botID), nicknameMentionString(f.botID)} {
if strings.Contains(msg.Content, p) {
return evt
}
}
return nil
}
func (f *msgFilter) NotByBot(evt interface{}) interface{} {
return messageIsBot(evt, false)
}
func (f *msgFilter) IsByBot(evt interface{}) interface{} {
return messageIsBot(evt, true)
}
func (f *msgFilter) NotByWebhook(evt interface{}) interface{} {
return messageIsWebhook(evt, false)
}
func (f *msgFilter) IsByWebhook(evt interface{}) interface{} {
return messageIsWebhook(evt, true)
}
func (f *msgFilter) HasBotMentionPrefix(evt interface{}) interface{} {
return messageHasPrefix(evt, mentionString(f.botID), nicknameMentionString(f.botID))
}
func (f *msgFilter) HasPrefix(evt interface{}) interface{} {
if f.prefix == "" {
return evt
}
return messageHasPrefix(evt, f.prefix)
}
func (f *msgFilter) StripPrefix(evt interface{}) interface{} {
if f.prefix == "" {
return evt
}
if content := messageHasPrefix(evt, f.prefix); content == nil {
return nil
}
var msg *disgord.Message
if msg = getMsg(evt); msg == nil {
return nil
}
// handle whitespaces before the prefix
msg.Content = strings.TrimLeft(msg.Content, " ")
msg.Content = msg.Content[len(f.prefix):]
return evt
}
func (f *msgFilter) HasPermissions(evt interface{}) interface{} {
msg := getMsg(evt)
uID := msg.Author.ID
if uID.IsZero() {
return nil
}
p, err := f.s.Guild(msg.GuildID).Member(uID).GetPermissions()
if err != nil {
return nil
}
if (p & f.permissions) != f.permissions {
return nil
}
if f.eitherPermissions > 0 && (p&f.eitherPermissions) == 0 {
return nil
}
return evt
}
// SetMinPermissions enforces message authors to have at least the given permission flags
// for the HasPermissions method to succeed
func (f *msgFilter) SetMinPermissions(min disgord.PermissionBit) {
f.permissions = min
}
// SetAltPermissions enforces message authors to have at least one of the given permission flags for the
// HasPermissions method to succeed
func (f *msgFilter) SetAltPermissions(bits ...disgord.PermissionBit) {
var permissions disgord.PermissionBit
for i := range bits {
permissions |= bits[i]
}
f.eitherPermissions = permissions
}