nitterbot/main.go

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package main
import (
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"bufio"
"fmt"
"log"
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"os"
"regexp"
"strings"
"time"
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sn "github.com/ekzyis/snappy"
)
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type NostrClient struct {
Url string
Name string
}
var (
TwitterUrlRegexp = regexp.MustCompile(`(?:https?:\/\/)?(?:www\.)?((?:twitter|x)\.com)\/\w+\/status(?:es)?\/\d+`)
// references:
// - https://github.com/zedeus/nitter/wiki/Instances
// - https://status.d420.de/
NitterClearnetUrls = []string{
"xcancel.com",
}
)
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)
}
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func main() {
loadEnv()
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c := sn.NewClient(
sn.WithBaseUrl(os.Getenv("SN_BASE_URL")),
sn.WithApiKey(os.Getenv("SN_API_KEY")),
)
for {
log.Println("fetching items ...")
r, err := c.Items(&sn.ItemsQuery{Sort: "recent", Type: "all", Limit: 100})
if err != nil {
log.Println(err)
SendToNostr(fmt.Sprint(err))
WaitUntilNext(time.Minute)
continue
}
for _, item := range r.Items {
var m []string
var comment string
if m = TwitterUrlRegexp.FindStringSubmatch(item.Url); m != nil {
comment = strings.Replace(m[0], m[1], "xcancel.com", 1)
} else if m = TwitterUrlRegexp.FindStringSubmatch(item.Text); m != nil {
comment = strings.Replace(m[0], m[1], "xcancel.com", 1)
}
if comment != "" {
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
}
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cId, err := c.CreateComment(item.Id, comment)
if err != nil {
log.Println("create comment failed:", err)
SendToNostr(fmt.Sprint(err))
continue
}
log.Printf("created comment %d\n", cId)
SaveComment(&sn.Comment{Id: cId, Text: comment, ParentId: item.Id})
}
}
WaitUntilNext(time.Minute)
}
}
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func loadEnv() {
var (
f *os.File
s *bufio.Scanner
err error
)
if f, err = os.Open(".env"); err != nil {
log.Fatalf("error opening .env: %v", err)
}
defer f.Close()
s = bufio.NewScanner(f)
s.Split(bufio.ScanLines)
for s.Scan() {
line := s.Text()
parts := strings.SplitN(line, "=", 2)
// Check if we have exactly 2 parts (key and value)
if len(parts) == 2 {
os.Setenv(parts[0], parts[1])
} else {
log.Fatalf(".env: invalid line: %s\n", line)
}
}
// Check for errors during scanning
if err = s.Err(); err != nil {
fmt.Println("error scanning .env:", err)
}
}