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utils.go
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/
utils.go
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package utils
import (
"reflect"
"regexp"
"strings"
"github.com/bwmarrin/discordgo"
)
// Bold encloses string in bold tags
func Bold(s string) string {
return "**" + s + "**"
}
// Block encloses string in code block tags
func Block(s string) string {
return "```\n" + s + "\n```"
}
// Code encloses string in code tags
func Code(s string) string {
return "`" + s + "`"
}
// Italics encloses string in italics tags
func Italics(s string) string {
return "*" + s + "*"
}
// Spoil encloses string in spoiler tags
func Spoil(s string) string {
return "||" + s + "||"
}
// Under encloses string in underline tags
func Under(s string) string {
return "__" + s + "__"
}
// Mention encloses the string in mention tags
func Mention(s string) string {
return "<@!" + s + ">"
}
// Reverse reverses a string, assuming ascii encoding
func Reverse(s string) string {
runes := []rune(s)
for i, j := 0, len(runes)-1; i < j; i, j = i+1, j-1 {
runes[i], runes[j] = runes[j], runes[i]
}
return string(runes)
}
// Unmention returns a string with mentions replaced by nicks/usernames
func Unmention(ses *discordgo.Session, msg *discordgo.Message, str string) string {
return regexp.MustCompile(`<@.*>`).ReplaceAllStringFunc(str, func(s string) string {
id := strings.Trim(s, "<!@>")
member, err := ses.GuildMember(msg.GuildID, id)
if err != nil {
return id
}
if len(member.Nick) == 0 {
return member.User.Username
}
return member.Nick
})
}
// StrLen Recursively searches for strings and counts up the total length
func Strlen(e interface{}) int {
count := 0
// type assert e
ev, ok := e.(reflect.Value)
if !ok {
ev = reflect.ValueOf(e)
}
switch ev.Kind() {
case reflect.String:
// count string lengths
count += len(ev.String())
case reflect.Ptr:
// unroll pointers
elv := ev.Elem()
if !elv.IsValid() {
return 0
}
count += Strlen(elv)
case reflect.Struct:
// iterate over fields
for i := 0; i < ev.NumField(); i++ {
switch f := ev.Field(i); f.Kind() {
case reflect.String:
// count string field lengths
count += len(f.String())
case reflect.Ptr:
// unroll pointers
el := f.Elem()
if !el.IsValid() {
return 0
}
count += Strlen(el)
case reflect.Struct:
// recurse over struct fields
count += Strlen(f.Interface())
default:
// do nothing
}
}
default:
// do nothing
}
return count
}
// MsgHasRoles Checks if the author has the required roles
func MsgHasRoles(ses *discordgo.Session, msg *discordgo.Message, roles []string) (bool, error) {
if len(roles) == 0 {
return true, nil
}
// Get member
member, err := ses.State.Member(msg.GuildID, msg.Author.ID)
if err != nil {
member, err = ses.GuildMember(msg.GuildID, msg.Author.ID)
if err != nil {
return false, err
}
}
// Get guild roles
groles, err := ses.GuildRoles(msg.GuildID)
if err != nil {
return false, err
}
// Get roles required
rolesrequired := []string{}
for _, r := range roles {
for _, gr := range groles {
if strings.ToLower(gr.Name) == r {
rolesrequired = append(rolesrequired, gr.ID)
}
}
}
// Check member roles
mroles := member.Roles
for _, rr := range rolesrequired {
for _, mr := range mroles {
if mr == rr {
return true, nil
}
}
}
return false, nil
}
// MsgInChannels Checks if message was sent in the required channels
func MsgInChannels(s *discordgo.Session, m *discordgo.Message, channels []string) (bool, error) {
if len(channels) == 0 {
return true, nil
}
cha, err := s.Channel(m.ChannelID)
if err != nil {
return false, err
}
for _, c := range channels {
if c == cha.Name {
return true, nil
}
}
return false, nil
}
// EmojiAlpha Returns a string of the emoji equivalent of the string
func EmojiAlpha(s string) string {
out := ""
for _, char := range s {
if char <= 'z' && char >= 'a' {
out += string(0x1f1e6 + char - 'a')
out += " "
continue
}
if char <= 'Z' && char >= 'A' {
out += string(0x1f1e6 + char - 'A')
out += " "
continue
}
if char == ' ' {
out += string(0x1f914)
continue
}
out += string(char)
}
return out
}