oppi.li
1package helpers
2
3import (
4 "time"
5
6 "github.com/bluesky-social/indigo/automod"
7)
8
9// no accounts exist before this time
10var atprotoAccountEpoch = time.Date(2020, 1, 1, 0, 0, 0, 0, time.UTC)
11
12// returns true if account creation timestamp is plausible: not-nil, not in distant past, not in the future
13func plausibleAccountCreation(when *time.Time) bool {
14 if when == nil {
15 return false
16 }
17 // this is mostly to check for misconfigurations or null values (eg, UNIX epoch zero means "unknown" not actually 1970)
18 if !when.After(atprotoAccountEpoch) {
19 return false
20 }
21 // a timestamp in the future would also indicate some misconfiguration
22 if when.After(time.Now().Add(time.Hour)) {
23 return false
24 }
25 return true
26}
27
28// checks if account was created recently, based on either public or private account metadata. if metadata isn't available at all, or seems bogus, returns 'false'
29func AccountIsYoungerThan(c *automod.AccountContext, age time.Duration) bool {
30 // TODO: consider swapping priority order here (and below)
31 if c.Account.CreatedAt != nil && plausibleAccountCreation(c.Account.CreatedAt) {
32 return time.Since(*c.Account.CreatedAt) < age
33 }
34 if c.Account.Private != nil && plausibleAccountCreation(c.Account.Private.IndexedAt) {
35 return time.Since(*c.Account.Private.IndexedAt) < age
36 }
37 return false
38}
39
40// checks if account was *not* created recently, based on either public or private account metadata. if metadata isn't available at all, or seems bogus, returns 'false'
41func AccountIsOlderThan(c *automod.AccountContext, age time.Duration) bool {
42 if c.Account.CreatedAt != nil && plausibleAccountCreation(c.Account.CreatedAt) {
43 return time.Since(*c.Account.CreatedAt) >= age
44 }
45 if c.Account.Private != nil && plausibleAccountCreation(c.Account.Private.IndexedAt) {
46 return time.Since(*c.Account.Private.IndexedAt) >= age
47 }
48 return false
49}