moving things around and stub before creating a cmd register

core/messages.go

@@ -4,60 +4,12 @@ import (
 	"bytes"
 	"fmt"
 	"os/exec"
-	"regexp"
 	"strings"
 	"time"
 
 	"github.com/bwmarrin/discordgo"
 )
 
-// source on www.socketloop.com
-func removeCharacters(input string, characters string) string {
-	filter := func(r rune) rune {
-		if strings.IndexRune(characters, r) < 0 {
-			return r
-		}
-		return -1
-	}
-	return strings.Map(filter, input)
-}
-
-// https://stackoverflow.com/questions/34839659/how-can-i-easily-get-a-substring-in-go-while-guarding-against-slice-bounds-out
-func maxString(s string, max int) string {
-	if len(s) > max {
-		r := 0
-		for i := range s {
-			r++
-			if r > max {
-				return s[:i]
-			}
-		}
-	}
-	return s
-}
-
-// this only strip custom emoji, not default unicode ones
-func stripEmoji(msg string) string {
-	re := regexp.MustCompile(`:\w+:`)
-	match := re.FindAll([]byte(msg), -1)
-	if len(match) > 0 {
-		s := msg
-		for i := range match {
-			s = strings.Replace(s, string(match[i]), "", -1)
-		}
-		return s
-	} else {
-		return msg
-	}
-}
-
-func prepareTTSMessage(msg string) string {
-	t1 := maxString(msg, 300)
-	t2 := stripEmoji(t1)
-	t3 := removeCharacters(t2, "-\"'`$();:.\\")
-	return strings.Trim(t3, " ")
-}
-
 func createAudio(msg string) (filename string, file *bytes.Reader) {
 	curr_time := time.Now().Unix()
 	filename = fmt.Sprintf("/tmp/%d.mp3", curr_time)
@@ -72,9 +24,17 @@ func createAudio(msg string) (filename string, file *bytes.Reader) {
 	return
 }
 
+func MessageHelp(s *discordgo.Session, m *discordgo.MessageCreate) {
+	if m.Author.ID == s.State.User.ID {
+		return
+	}
+	if m.Content == "/ggd help" {
+		// build list of possible commands
+		return
+	}
+}
+
 func MessagePing(s *discordgo.Session, m *discordgo.MessageCreate) {
-	// Ignore all messages created by the bot itself
-	// This isn't required in this specific example but it's a good practice.
 	if m.Author.ID == s.State.User.ID {
 		return
 	}
@@ -92,7 +52,7 @@ func MessageAudio(s *discordgo.Session, m *discordgo.MessageCreate) {
 	if m.Author.ID == s.State.User.ID {
 		return
 	}
-	var prefix string = "/gogodisco audio"
+	var prefix string = "/ggd tts"
 	if strings.HasPrefix(m.Content, prefix) {
 		var message string = strings.TrimPrefix(m.Content, prefix)
 		var cleanMessage string = prepareTTSMessage(message)