mirror of
https://github.com/lyx0/nourybot.git
synced 2024-11-13 19:49:55 +01:00
136 lines
3.5 KiB
Go
136 lines
3.5 KiB
Go
package common
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import (
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"bytes"
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"encoding/json"
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"fmt"
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"io"
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"log"
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"net/http"
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"github.com/gempir/go-twitch-irc/v3"
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"go.uber.org/zap"
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)
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// banphraseResponse is the data we receive back from
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// the banphrase API
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type banphraseResponse struct {
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Banned bool `json:"banned"`
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InputMessage string `json:"input_message"`
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BanphraseData banphraseData `json:"banphrase_data"`
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}
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// banphraseData contains details about why a message
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// was banphrased.
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type banphraseData struct {
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Id int `json:"id"`
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Name string `json:"name"`
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Phrase string `json:"phrase"`
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Length int `json:"length"`
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Permanent bool `json:"permanent"`
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}
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var (
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banPhraseUrl = "https://pajlada.pajbot.com/api/v1/banphrases/test"
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)
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// CheckMessage checks a given message against the banphrase api.
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// returns false, "okay" if a message is allowed
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// returns true and a string with the reason if it was banned.
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// More information:
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// https://gist.github.com/pajlada/57464e519ba8d195a97ddcd0755f9715
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func checkMessage(text string) (bool, string) {
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sugar := zap.NewExample().Sugar()
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defer sugar.Sync()
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// {"message": "AHAHAHAHA LUL"}
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reqBody, err := json.Marshal(map[string]string{
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"message": text,
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})
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if err != nil {
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log.Fatal(err)
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}
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resp, err := http.Post(banPhraseUrl, "application/json", bytes.NewBuffer(reqBody))
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if err != nil {
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log.Panic(err)
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}
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defer resp.Body.Close()
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body, err := io.ReadAll(resp.Body)
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if err != nil {
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log.Panic(err)
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}
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var responseObject banphraseResponse
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json.Unmarshal(body, &responseObject)
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// Bad Message
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//
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// {"phrase": "No gyazo allowed"}
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reason := responseObject.BanphraseData.Name
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if responseObject.Banned {
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return true, fmt.Sprint(reason)
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} else if !responseObject.Banned {
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// Good message
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return false, "okay"
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}
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// Couldn't contact api so assume it was a bad message
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return true, "Banphrase API couldn't be reached monkaS"
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}
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// Send is used to send twitch replies and contains the necessary
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// safeguards and logic for that.
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func Send(target, message string, tc *twitch.Client) {
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sugar := zap.NewExample().Sugar()
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defer sugar.Sync()
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// Message we are trying to send is empty.
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if len(message) == 0 {
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return
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}
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// Since messages starting with `.` or `/` are used for special actions
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// (ban, whisper, timeout) and so on, we place an emote infront of it so
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// the actions wouldn't execute. `!` and `$` are common bot prefixes so we
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// don't allow them either.
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if message[0] == '.' || message[0] == '/' || message[0] == '!' || message[0] == '$' {
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message = ":tf: " + message
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}
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// check the message for bad words before we say it
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messageBanned, banReason := checkMessage(message)
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if messageBanned {
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// Bad message, replace message and log it.
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tc.Say(target, "[BANPHRASED] monkaS")
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sugar.Infow("banned message detected",
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"target channel", target,
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"message", message,
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"ban reason", banReason,
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)
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return
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} else {
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// In case the message we are trying to send is longer than the
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// maximum allowed message length on twitch we split the message in two parts.
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// Twitch has a maximum length for messages of 510 characters so to be safe
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// we split and check at 500 characters.
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// https://discuss.dev.twitch.tv/t/missing-client-side-message-length-check/21316
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// TODO: Make it so it splits at a space instead and not in the middle of a word.
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if len(message) > 500 {
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firstMessage := message[0:499]
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secondMessage := message[499:]
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tc.Say(target, firstMessage)
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tc.Say(target, secondMessage)
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return
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}
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// Message was fine.
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tc.Say(target, message)
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return
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}
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}
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