nitterbot/main.go

95 lines
2.3 KiB
Go
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package main
import (
"fmt"
"log"
"regexp"
"strings"
"time"
"github.com/ekzyis/sn-goapi"
)
var (
TwitterUrlRegexp = regexp.MustCompile(`^(?:https?:\/\/)?((www\.)?(twitter|x)\.com)\/`)
2023-08-23 12:06:13 +00:00
NitterUrls = []string{"nitter.net", "nitter.it", "nitter.cz"}
)
func WaitUntilNext(d time.Duration) {
now := time.Now()
dur := now.Truncate(d).Add(d).Sub(now)
log.Println("sleeping for", dur.Round(time.Second))
time.Sleep(dur)
}
func CheckNotifications() {
var prevHasNewNotes bool
for {
log.Println("Checking notifications ...")
hasNewNotes, err := sn.CheckNotifications()
if err != nil {
SendToNostr(fmt.Sprint(err))
} else {
if !prevHasNewNotes && hasNewNotes {
// only send on "rising edge"
SendToNostr("new notifications")
log.Println("Forwarded notifications to monitoring")
} else if hasNewNotes {
log.Println("Notifications already forwarded")
}
}
prevHasNewNotes = hasNewNotes
WaitUntilNext(time.Hour)
}
}
func SessionKeepAlive() {
for {
log.Println("Refresh session using GET /api/auth/session ...")
sn.RefreshSession()
WaitUntilNext(time.Hour)
}
}
func main() {
go CheckNotifications()
go SessionKeepAlive()
for {
log.Println("fetching items ...")
r, err := sn.Items(&sn.ItemsQuery{Sort: "recent", Limit: 21})
if err != nil {
SendToNostr(fmt.Sprint(err))
WaitUntilNext(time.Minute)
continue
}
for _, item := range r.Items {
if m := TwitterUrlRegexp.FindStringSubmatch(item.Url); m != nil {
log.Printf("item %d is twitter link\n", item.Id)
if ItemHasComment(item.Id) {
log.Printf("item %d already has nitter links comment\n", item.Id)
continue
}
comment := "Nitter links:\n\n"
for _, nUrl := range NitterUrls {
nitterLink := strings.Replace(item.Url, m[1], nUrl, 1)
comment += nitterLink + "\n"
}
comment += "\n_Nitter is a free and open source alternative Twitter front-end focused on privacy and performance. "
comment += "Click [here](https://github.com/zedeus/nitter) for more information._"
cId, err := sn.CreateComment(item.Id, comment)
if err != nil {
SendToNostr(fmt.Sprint(err))
continue
}
log.Printf("created comment %d\n", cId)
SaveComment(&sn.Comment{Id: cId, Text: comment, ParentId: item.Id})
} else {
log.Printf("item %d is not twitter link\n", item.Id)
}
}
WaitUntilNext(time.Minute)
}
}