feat(interactions#GuildAllChannelsID): use strconv instead of math/big

interactions.go

@@ -8,8 +8,8 @@ import (
 	"fmt"
 	"io"
 	"io/ioutil"
-	"math/big"
 	"net/http"
+	"strconv"
 	"time"
 )
 
@@ -48,13 +48,6 @@ type ApplicationCommand struct {
 	Options                  []*ApplicationCommandOption `json:"options"`
 }
 
-// GuildAllChannelsID is function which returns guild_id-1.
-// It is used in ApplicationCommandPermission to target all the channels within a guild
-func GuildAllChannelsID(guild string) (id string) {
-	res, _ := new(big.Int).SetString(guild, 10)
-	return res.Sub(res, big.NewInt(1)).String()
-}
-
 // ApplicationCommandOptionType indicates the type of a slash command's option.
 type ApplicationCommandOptionType uint8
 
@@ -139,6 +132,13 @@ type ApplicationCommandPermissions struct {
 	Permission bool                             `json:"permission"`
 }
 
+// GuildAllChannelsID is a helper function which returns guild_id-1.
+// It is used in ApplicationCommandPermissions to target all the channels within a guild
+func GuildAllChannelsID(guild string) (id string) {
+	v, _ := strconv.ParseUint(guild, 10, 64)
+	return strconv.FormatUint(v, 10)
+}
+
 // ApplicationCommandPermissionsList represents a list of ApplicationCommandPermissions, needed for serializing to JSON.
 type ApplicationCommandPermissionsList struct {
 	Permissions []*ApplicationCommandPermissions `json:"permissions"`