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package main
import (
"github.com/bwmarrin/discordgo"
"sync"
"os"
"os/signal"
"fmt"
"regexp"
"strings"
)
var (
WORD_REGEX = regexp.MustCompile(`[a-z'’]+`)
mu = sync.RWMutex{}
words = map[string]struct{}{}
channel string
)
func getWords(m *discordgo.Message) []string {
result := WORD_REGEX.FindAllString(strings.ToLower(m.Content), -1)
return result
}
func add(m *discordgo.Message) {
if m.ChannelID != channel || m.Author.Bot {
return
}
mu.Lock()
for _, word := range getWords(m) {
words[word] = struct{}{}
}
mu.Unlock()
}
func report() {
mu.RLock()
fmt.Printf("at %d words now\n", len(words))
mu.RUnlock()
}
func confer(s *discordgo.Session, m *discordgo.Message) {
if m.ChannelID != channel || m.Author.Bot {
return
}
mu.RLock()
abominable := []string{}
for _, word := range getWords(m) {
if _, ok := words[word]; ok {
abominable = append(abominable, word)
}
}
mu.RUnlock()
if len(abominable) > 0 {
builder := strings.Builder{}
for i, abomination := range abominable {
if i > 0 {
builder.WriteString(", ")
}
fmt.Fprintf(&builder, "**%s**", abomination)
}
_, e := s.ChannelMessageSendReply(m.ChannelID, builder.String(), m.Reference())
yell(e)
}
}
func must(e error) {
if e != nil {
panic(e)
}
}
func yell(e error) {
if e != nil {
fmt.Fprintln(os.Stderr, e)
}
}
func respond(session *discordgo.Session, message *discordgo.Message) {
switch message.Type {
case discordgo.MessageTypeDefault, discordgo.MessageTypeReply:
confer(session, message)
go func() {
add(message)
report()
}()
}
}
func main() {
var ok bool
channel, ok = os.LookupEnv("CHANNEL")
if !ok {
panic(ok)
}
session, e := discordgo.New(fmt.Sprintf("Bot %s", os.Getenv("TOKEN")))
must(e)
session.AddHandler(func(s *discordgo.Session, m *discordgo.MessageCreate) {
respond(s, m.Message)
})
session.AddHandler(func(s *discordgo.Session, m *discordgo.MessageUpdate) {
respond(s, m.Message)
})
must(session.Open())
var (
last string
count = 0
)
for {
got, e := session.ChannelMessages(channel, 100, last, "", "")
if e != nil {
yell(e)
continue
}
if len(got) == 0 {
break
}
last = got[len(got)-1].ID
count += len(got)
fmt.Printf("msgs: %d >= %s\n", count, last)
go func() {
for _, m := range got {
add(m)
}
report()
}()
}
fmt.Printf("done! (%d msgs)\n", count)
mu.RLock()
for k := range words {
fmt.Printf("%s ", k)
}
fmt.Println()
mu.RUnlock()
broken := make(chan os.Signal, 1)
signal.Notify(broken, os.Interrupt, os.Kill)
<-broken
must(session.Close())
}
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