-
Notifications
You must be signed in to change notification settings - Fork 20
/
community.go
112 lines (87 loc) · 2.46 KB
/
community.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
package types
import (
"fmt"
"net/url"
"unicode/utf8"
sdk "github.com/cosmos/cosmos-sdk/types"
"github.com/gofrs/uuid"
)
const (
maxTitleLength = 150
minTitleLength = 1
maxPostLength = 64 * 1000
minPostLength = 15
maxURLLength = 4 * 1024
)
func (p Post) Address() string {
return fmt.Sprintf("%s/%s", p.Owner, p.Uuid)
}
func (p Post) Validate() error {
if err := sdk.VerifyAddressFormat(p.Owner); err != nil {
return fmt.Errorf("invalid owner: %w", err)
}
if _, err := uuid.FromString(p.Uuid); err != nil {
return fmt.Errorf("invalid uuid: %w", err)
}
if p.Category < Category_CATEGORY_UNDEFINED || p.Category > Category_CATEGORY_SPORTS {
return fmt.Errorf("invalid category: %d", p.Category)
}
if utf8.RuneCountInString(p.Title) > maxTitleLength || len(p.Title) < minTitleLength {
return fmt.Errorf("invalid title: title length should be in [%d;%d]", minTitleLength, maxTitleLength)
}
if !isPreviewImageValid(p.PreviewImage) {
return fmt.Errorf("invalid preview_image")
}
if utf8.RuneCountInString(p.Text) < minPostLength || len(p.Text) > maxPostLength {
return fmt.Errorf("invalid text: text length should be in [%d;%d]", minPostLength, maxPostLength)
}
return nil
}
func (l Like) Validate() error {
if err := sdk.VerifyAddressFormat(l.Owner); err != nil {
return fmt.Errorf("invalid owner: %w", err)
}
if err := sdk.VerifyAddressFormat(l.PostOwner); err != nil {
return fmt.Errorf("invalid post_owner: %w", err)
}
if l.Owner.Equals(l.PostOwner) {
return fmt.Errorf("invalid post_owner: self-like")
}
if _, err := uuid.FromString(l.PostUuid); err != nil {
return fmt.Errorf("invalid uuid: %w", err)
}
if l.Weight < LikeWeight_LIKE_WEIGHT_DOWN || l.Weight > LikeWeight_LIKE_WEIGHT_UP {
return fmt.Errorf("invalid weight")
}
return nil
}
func ValidateFollowers(who string, whom []sdk.AccAddress) error {
if _, err := sdk.AccAddressFromBech32(who); err != nil {
return fmt.Errorf("invalid follower: %w", err)
}
if len(whom) == 0 {
return fmt.Errorf("invalid followee: empty array")
}
for i, v := range whom {
if err := sdk.VerifyAddressFormat(v); err != nil {
return fmt.Errorf("invalid followee #%d: %w", i+1, err)
}
}
return nil
}
func isPreviewImageValid(str string) bool {
if len(str) > maxURLLength {
return false
}
if str == "" {
return true
}
url, err := url.Parse(str)
if err != nil {
return false
}
if len(url.Host) == 0 {
return false
}
return url.Scheme == "http" || url.Scheme == "https"
}