2020-05-30 08:35:45 +00:00
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package discord
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import (
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"context"
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"fmt"
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"strconv"
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"strings"
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"twdcbot/models"
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"twdcbot/server"
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"twdcbot/tribe"
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"github.com/bwmarrin/discordgo"
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)
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const (
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TribesPerServer = 10
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)
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type SessionConfig struct {
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Token string
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CommandPrefix string
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Status string
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ServerRepository server.Repository
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TribeRepository tribe.Repository
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}
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type Session struct {
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dg *discordgo.Session
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cfg SessionConfig
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}
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func New(cfg SessionConfig) (*Session, error) {
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var err error
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s := &Session{
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cfg: cfg,
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}
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s.dg, err = discordgo.New("Bot " + cfg.Token)
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if err != nil {
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return nil, err
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}
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if err := s.init(); err != nil {
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return nil, err
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}
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return s, nil
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}
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func (s *Session) init() error {
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s.dg.AddHandler(s.handleNewMessage)
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err := s.dg.Open()
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if err != nil {
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return fmt.Errorf("error opening ws connection: %s", err.Error())
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}
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if err := s.dg.UpdateStatus(0, s.cfg.Status); err != nil {
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return err
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}
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return nil
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}
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func (s *Session) handleNewMessage(_ *discordgo.Session, m *discordgo.MessageCreate) {
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if m.Author.ID == s.dg.State.User.ID || m.Author.Bot || m.GuildID == "" {
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return
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}
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2020-05-30 08:54:28 +00:00
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if has, err := s.memberHasPermission(m.GuildID, m.Author.ID, discordgo.PermissionAdministrator); err != nil || !has {
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2020-05-30 08:35:45 +00:00
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return
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}
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splitted := strings.Split(m.Content, " ")
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argsLength := len(splitted) - 1
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args := splitted[1 : argsLength+1]
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switch splitted[0] {
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case HelpCommand.WithPrefix(s.cfg.CommandPrefix):
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2020-05-30 08:54:28 +00:00
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s.handleHelpCommand(m)
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2020-05-30 08:35:45 +00:00
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case AddCommand.WithPrefix(s.cfg.CommandPrefix):
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s.handleAddCommand(m, args...)
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2020-05-30 08:54:28 +00:00
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case DeleteCommand.WithPrefix(s.cfg.CommandPrefix):
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s.handleDeleteCommand(m, args...)
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case ListCommand.WithPrefix(s.cfg.CommandPrefix):
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2020-05-30 09:07:02 +00:00
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s.handleListCommand(m)
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2020-05-30 08:54:28 +00:00
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case LostVillagesCommand.WithPrefix(s.cfg.CommandPrefix):
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case ConqueredVillagesCommand.WithPrefix(s.cfg.CommandPrefix):
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2020-05-30 08:35:45 +00:00
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}
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}
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2020-05-30 08:54:28 +00:00
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func (s *Session) handleHelpCommand(m *discordgo.MessageCreate) {
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s.sendHelpMessage(m.Author.Mention(), m.ChannelID)
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}
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2020-05-30 09:07:02 +00:00
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func (s *Session) handleListCommand(m *discordgo.MessageCreate) {
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tribes, _, err := s.cfg.TribeRepository.Fetch(context.Background(), &models.TribeFilter{
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ServerID: []string{m.GuildID},
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})
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if err != nil {
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return
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}
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msg := m.Author.Mention() + " ```ID w bazie - Świat - ID plemienia \n\n"
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for _, tribe := range tribes {
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msg += fmt.Sprintf(">>> %d - %s - %d\n", tribe.ID, tribe.World, tribe.TribeID)
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}
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msg += "```"
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s.sendMessage(m.ChannelID, msg)
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}
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2020-05-30 08:35:45 +00:00
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func (s *Session) handleAddCommand(m *discordgo.MessageCreate, args ...string) {
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2020-05-30 08:54:28 +00:00
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argsLength := len(args)
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if argsLength > 2 {
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s.sendUnknownCommandError(m.Author.Mention(), m.ChannelID, args[2:argsLength]...)
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return
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} else if argsLength < 2 {
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s.sendMessage(m.ChannelID,
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fmt.Sprintf("%s %s [świat] [id plemienia]",
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m.Author.Mention(),
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AddCommand.WithPrefix(s.cfg.CommandPrefix)))
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return
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}
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2020-05-30 08:35:45 +00:00
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world := args[0]
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id, err := strconv.Atoi(args[1])
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if err != nil {
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2020-05-30 08:54:28 +00:00
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s.sendMessage(m.ChannelID,
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fmt.Sprintf("%s %s [świat] [id plemienia]",
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m.Author.Mention(),
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AddCommand.WithPrefix(s.cfg.CommandPrefix)))
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2020-05-30 08:35:45 +00:00
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return
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}
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server := &models.Server{
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ID: m.GuildID,
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}
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err = s.cfg.ServerRepository.Store(context.Background(), server)
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if err != nil {
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s.sendMessage(m.ChannelID, m.Author.Mention()+` Nie udało się dodać plemienia do obserwowanych.`)
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return
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}
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if len(server.Tribes) >= TribesPerServer {
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s.sendMessage(m.ChannelID, m.Author.Mention()+fmt.Sprintf(` Osiągnięto limit plemion (%d/%d).`, TribesPerServer, TribesPerServer))
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return
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}
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err = s.cfg.TribeRepository.Store(context.Background(), &models.Tribe{
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World: world,
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TribeID: id,
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ServerID: server.ID,
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})
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if err != nil {
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s.sendMessage(m.ChannelID, m.Author.Mention()+` Nie udało się dodać plemienia do obserwowanych.`)
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return
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}
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2020-05-30 08:54:28 +00:00
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s.sendMessage(m.ChannelID, m.Author.Mention()+` Dodano.`)
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}
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func (s *Session) handleDeleteCommand(m *discordgo.MessageCreate, args ...string) {
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argsLength := len(args)
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if argsLength > 1 {
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s.sendUnknownCommandError(m.Author.Mention(), m.ChannelID, args[1:argsLength]...)
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return
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} else if argsLength < 1 {
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s.sendMessage(m.ChannelID,
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fmt.Sprintf(`%s %s [id z tw!list]`,
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m.Author.Mention(),
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DeleteCommand.WithPrefix(s.cfg.CommandPrefix)))
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return
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}
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id, err := strconv.Atoi(args[0])
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if err != nil {
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s.sendMessage(m.ChannelID,
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fmt.Sprintf(`%s %s [id z tw!list]`,
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m.Author.Mention(),
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DeleteCommand.WithPrefix(s.cfg.CommandPrefix)))
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return
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}
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go s.cfg.TribeRepository.Delete(context.Background(), &models.TribeFilter{
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ServerID: []string{m.GuildID},
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ID: []int{id},
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})
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s.sendMessage(m.ChannelID, m.Author.Mention()+` Usunięto.`)
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2020-05-30 08:35:45 +00:00
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}
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func (s *Session) Close() error {
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return s.dg.Close()
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}
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2020-05-30 08:54:28 +00:00
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func (s *Session) memberHasPermission(guildID string, userID string, permission int) (bool, error) {
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2020-05-30 08:35:45 +00:00
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member, err := s.dg.State.Member(guildID, userID)
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if err != nil {
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if member, err = s.dg.GuildMember(guildID, userID); err != nil {
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return false, err
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}
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}
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// Iterate through the role IDs stored in member.Roles
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// to check permissions
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for _, roleID := range member.Roles {
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role, err := s.dg.State.Role(guildID, roleID)
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if err != nil {
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return false, err
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}
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if role.Permissions&permission != 0 {
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return true, nil
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}
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}
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return false, nil
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}
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