535 lines
17 KiB
Go
535 lines
17 KiB
Go
/*
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* MumbleDJ
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* By Matthieu Grieger
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* commands.go
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* Copyright (c) 2014, 2015 Matthieu Grieger (MIT License)
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*/
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package main
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import (
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"bytes"
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"errors"
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"fmt"
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"os"
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"strconv"
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"strings"
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"github.com/layeh/gumble/gumble"
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)
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// parseCommand views incoming chat messages and determines if there is a valid command within them.
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// If a command exists, the arguments (if any) will be parsed and sent to the appropriate helper
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// function to perform the command's task.
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func parseCommand(user *gumble.User, username, command string) {
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var com, argument string
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split := strings.Split(command, "\n")
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splitString := split[0]
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if strings.Contains(splitString, " ") {
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index := strings.Index(splitString, " ")
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com, argument = splitString[0:index], splitString[(index+1):]
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} else {
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com = command
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argument = ""
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}
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switch com {
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// Add command
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case dj.conf.Aliases.AddAlias:
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if dj.HasPermission(username, dj.conf.Permissions.AdminAdd) {
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add(user, argument)
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} else {
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dj.SendPrivateMessage(user, NO_PERMISSION_MSG)
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}
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// Addnext command
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case dj.conf.Aliases.AddNextAlias:
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if dj.HasPermission(username, dj.conf.Permissions.AdminAddNext) {
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addNext(user, argument)
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} else {
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dj.SendPrivateMessage(user, NO_PERMISSION_MSG)
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}
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// Skip command
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case dj.conf.Aliases.SkipAlias:
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if dj.HasPermission(username, dj.conf.Permissions.AdminSkip) {
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skip(user, false, false)
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} else {
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dj.SendPrivateMessage(user, NO_PERMISSION_MSG)
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}
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// Skip playlist command
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case dj.conf.Aliases.SkipPlaylistAlias:
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if dj.HasPermission(username, dj.conf.Permissions.AdminAddPlaylists) {
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skip(user, false, true)
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} else {
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dj.SendPrivateMessage(user, NO_PERMISSION_MSG)
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}
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// Forceskip command
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case dj.conf.Aliases.AdminSkipAlias:
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if dj.HasPermission(username, true) {
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skip(user, true, false)
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} else {
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dj.SendPrivateMessage(user, NO_PERMISSION_MSG)
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}
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// Playlist forceskip command
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case dj.conf.Aliases.AdminSkipPlaylistAlias:
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if dj.HasPermission(username, true) {
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skip(user, true, true)
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} else {
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dj.SendPrivateMessage(user, NO_PERMISSION_MSG)
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}
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// Help command
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case dj.conf.Aliases.HelpAlias:
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if dj.HasPermission(username, dj.conf.Permissions.AdminHelp) {
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help(user)
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} else {
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dj.SendPrivateMessage(user, NO_PERMISSION_MSG)
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}
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// Volume command
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case dj.conf.Aliases.VolumeAlias:
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if dj.HasPermission(username, dj.conf.Permissions.AdminVolume) {
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volume(user, argument)
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} else {
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dj.SendPrivateMessage(user, NO_PERMISSION_MSG)
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}
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// Move command
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case dj.conf.Aliases.MoveAlias:
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if dj.HasPermission(username, dj.conf.Permissions.AdminMove) {
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move(user, argument)
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} else {
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dj.SendPrivateMessage(user, NO_PERMISSION_MSG)
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}
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// JoinMe command
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case dj.conf.Aliases.JoinMeAlias:
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if dj.HasPermission(username, dj.conf.Permissions.AdminJoinMe) {
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joinMe(user)
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} else {
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dj.SendPrivateMessage(user, NO_PERMISSION_MSG)
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}
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// Reload command
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case dj.conf.Aliases.ReloadAlias:
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if dj.HasPermission(username, dj.conf.Permissions.AdminReload) {
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reload(user)
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} else {
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dj.SendPrivateMessage(user, NO_PERMISSION_MSG)
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}
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// Reset command
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case dj.conf.Aliases.ResetAlias:
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if dj.HasPermission(username, dj.conf.Permissions.AdminReset) {
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reset(username)
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} else {
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dj.SendPrivateMessage(user, NO_PERMISSION_MSG)
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}
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// Numsongs command
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case dj.conf.Aliases.NumSongsAlias:
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if dj.HasPermission(username, dj.conf.Permissions.AdminNumSongs) {
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numSongs()
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} else {
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dj.SendPrivateMessage(user, NO_PERMISSION_MSG)
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}
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// Nextsong command
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case dj.conf.Aliases.NextSongAlias:
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if dj.HasPermission(username, dj.conf.Permissions.AdminNextSong) {
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nextSong(user)
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} else {
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dj.SendPrivateMessage(user, NO_PERMISSION_MSG)
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}
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// Currentsong command
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case dj.conf.Aliases.CurrentSongAlias:
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if dj.HasPermission(username, dj.conf.Permissions.AdminCurrentSong) {
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currentSong(user)
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} else {
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dj.SendPrivateMessage(user, NO_PERMISSION_MSG)
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}
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// Setcomment command
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case dj.conf.Aliases.SetCommentAlias:
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if dj.HasPermission(username, dj.conf.Permissions.AdminSetComment) {
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setComment(user, argument)
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} else {
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dj.SendPrivateMessage(user, NO_PERMISSION_MSG)
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}
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// Numcached command
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case dj.conf.Aliases.NumCachedAlias:
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if dj.HasPermission(username, dj.conf.Permissions.AdminNumCached) {
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numCached(user)
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} else {
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dj.SendPrivateMessage(user, NO_PERMISSION_MSG)
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}
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// Cachesize command
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case dj.conf.Aliases.CacheSizeAlias:
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if dj.HasPermission(username, dj.conf.Permissions.AdminCacheSize) {
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cacheSize(user)
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} else {
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dj.SendPrivateMessage(user, NO_PERMISSION_MSG)
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}
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// Kill command
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case dj.conf.Aliases.KillAlias:
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if dj.HasPermission(username, dj.conf.Permissions.AdminKill) {
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kill()
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} else {
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dj.SendPrivateMessage(user, NO_PERMISSION_MSG)
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}
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// Shuffle command
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case dj.conf.Aliases.ShuffleAlias:
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if dj.HasPermission(username, dj.conf.Permissions.AdminShuffle) {
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shuffleSongs(user, username)
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} else {
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dj.SendPrivateMessage(user, NO_PERMISSION_MSG)
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}
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// Shuffleon command
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case dj.conf.Aliases.ShuffleOnAlias:
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if dj.HasPermission(username, dj.conf.Permissions.AdminShuffleToggle) {
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toggleAutomaticShuffle(true, user, username)
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} else {
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dj.SendPrivateMessage(user, NO_PERMISSION_MSG)
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}
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// Shuffleoff command
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case dj.conf.Aliases.ShuffleOffAlias:
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if dj.HasPermission(username, dj.conf.Permissions.AdminShuffleToggle) {
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toggleAutomaticShuffle(false, user, username)
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} else {
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dj.SendPrivateMessage(user, NO_PERMISSION_MSG)
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}
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// ListSongs command
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case dj.conf.Aliases.ListSongsAlias:
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if dj.HasPermission(username, dj.conf.Permissions.AdminListSongs) {
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listSongs(user, argument)
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} else {
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dj.SendPrivateMessage(user, NO_PERMISSION_MSG)
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}
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// Version command
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case dj.conf.Aliases.VersionAlias:
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if dj.HasPermission(username, dj.conf.Permissions.AdminVersion) {
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version(user)
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} else {
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dj.SendPrivateMessage(user, NO_PERMISSION_MSG)
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}
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default:
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dj.SendPrivateMessage(user, COMMAND_DOESNT_EXIST_MSG)
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}
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}
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// add performs !add functionality. Checks input URL for service, and adds
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// the URL to the queue if the format matches.
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func add(user *gumble.User, url string) error {
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if url == "" {
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dj.SendPrivateMessage(user, NO_ARGUMENT_MSG)
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return errors.New("NO_ARGUMENT")
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} else {
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err := FindServiceAndAdd(user, url)
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if err != nil {
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dj.SendPrivateMessage(user, err.Error())
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}
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return err
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}
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}
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// addnext performs !addnext functionality. Checks input URL for service, and adds
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// the URL to the queue as the next song if the format matches.
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func addNext(user *gumble.User, url string) error {
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if !dj.audioStream.IsPlaying() {
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return add(user, url)
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} else {
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if url == "" {
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dj.SendPrivateMessage(user, NO_ARGUMENT_MSG)
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return errors.New("NO_ARGUMENT")
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} else {
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err := FindServiceAndInsertNext(user, url)
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if err != nil {
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dj.SendPrivateMessage(user, err.Error())
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}
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return err
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}
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}
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}
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// skip performs !skip functionality. Adds a skip to the skippers slice for the current song, and then
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// evaluates if a skip should be performed. Both skip and forceskip are implemented here.
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func skip(user *gumble.User, admin, playlistSkip bool) {
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if dj.audioStream.IsPlaying() {
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if playlistSkip {
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if dj.queue.CurrentSong().Playlist() != nil {
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if err := dj.queue.CurrentSong().Playlist().AddSkip(user.Name); err == nil {
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submitterSkipped := false
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if admin {
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dj.client.Self.Channel.Send(ADMIN_PLAYLIST_SKIP_MSG, false)
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} else if dj.queue.CurrentSong().Submitter() == user.Name {
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dj.client.Self.Channel.Send(fmt.Sprintf(PLAYLIST_SUBMITTER_SKIP_HTML, user.Name), false)
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submitterSkipped = true
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} else {
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dj.client.Self.Channel.Send(fmt.Sprintf(PLAYLIST_SKIP_ADDED_HTML, user.Name), false)
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}
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if submitterSkipped || dj.queue.CurrentSong().Playlist().SkipReached(len(dj.client.Self.Channel.Users)) || admin {
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id := dj.queue.CurrentSong().Playlist().ID()
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dj.queue.CurrentSong().Playlist().DeleteSkippers()
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for i := 0; i < len(dj.queue.queue); i++ {
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if dj.queue.queue[i].Playlist() != nil {
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if dj.queue.queue[i].Playlist().ID() == id {
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dj.queue.queue = append(dj.queue.queue[:i], dj.queue.queue[i+1:]...)
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i--
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}
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}
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}
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if dj.queue.Len() != 0 {
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// Set dontSkip to true to avoid audioStream.Stop() callback skipping the new first song.
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dj.queue.CurrentSong().SetDontSkip(true)
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}
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if !(submitterSkipped || admin) {
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dj.client.Self.Channel.Send(PLAYLIST_SKIPPED_HTML, false)
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}
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if err := dj.audioStream.Stop(); err != nil {
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panic(errors.New("An error occurred while stopping the current song."))
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}
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}
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}
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} else {
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dj.SendPrivateMessage(user, NO_PLAYLIST_PLAYING_MSG)
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}
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} else {
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if err := dj.queue.CurrentSong().AddSkip(user.Name); err == nil {
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submitterSkipped := false
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if admin {
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dj.client.Self.Channel.Send(ADMIN_SONG_SKIP_MSG, false)
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} else if dj.queue.CurrentSong().Submitter() == user.Name {
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dj.client.Self.Channel.Send(fmt.Sprintf(SUBMITTER_SKIP_HTML, user.Name), false)
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submitterSkipped = true
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} else {
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dj.client.Self.Channel.Send(fmt.Sprintf(SKIP_ADDED_HTML, user.Name), false)
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}
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if submitterSkipped || dj.queue.CurrentSong().SkipReached(len(dj.client.Self.Channel.Users)) || admin {
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if !(submitterSkipped || admin) {
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dj.client.Self.Channel.Send(SONG_SKIPPED_HTML, false)
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}
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if err := dj.audioStream.Stop(); err != nil {
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panic(errors.New("An error occurred while stopping the current song."))
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}
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}
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}
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}
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} else {
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dj.SendPrivateMessage(user, NO_MUSIC_PLAYING_MSG)
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}
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}
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// help performs !help functionality. Displays a list of valid commands.
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func help(user *gumble.User) {
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dj.SendPrivateMessage(user, HELP_HTML)
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}
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// volume performs !volume functionality. Checks input value against LowestVolume and HighestVolume from
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// config to determine if the volume should be applied. If in the correct range, the new volume
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// is applied and is immediately in effect.
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func volume(user *gumble.User, value string) {
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if value == "" {
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dj.client.Self.Channel.Send(fmt.Sprintf(CUR_VOLUME_HTML, dj.audioStream.Volume), false)
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} else {
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if parsedVolume, err := strconv.ParseFloat(value, 32); err == nil {
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newVolume := float32(parsedVolume)
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if newVolume >= dj.conf.Volume.LowestVolume && newVolume <= dj.conf.Volume.HighestVolume {
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dj.audioStream.Volume = newVolume
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dj.client.Self.Channel.Send(fmt.Sprintf(VOLUME_SUCCESS_HTML, user.Name, dj.audioStream.Volume), false)
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} else {
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dj.SendPrivateMessage(user, fmt.Sprintf(NOT_IN_VOLUME_RANGE_MSG, dj.conf.Volume.LowestVolume, dj.conf.Volume.HighestVolume))
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}
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} else {
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dj.SendPrivateMessage(user, fmt.Sprintf(NOT_IN_VOLUME_RANGE_MSG, dj.conf.Volume.LowestVolume, dj.conf.Volume.HighestVolume))
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}
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}
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}
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// move performs !move functionality. Determines if the supplied channel is valid and moves the bot
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// to the channel if it is.
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func move(user *gumble.User, channel string) {
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if channel == "" {
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dj.SendPrivateMessage(user, NO_ARGUMENT_MSG)
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} else {
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if channels := strings.Split(channel, "/"); dj.client.Channels.Find(channels...) != nil {
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dj.client.Self.Move(dj.client.Channels.Find(channels...))
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} else {
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dj.SendPrivateMessage(user, CHANNEL_DOES_NOT_EXIST_MSG+" "+channel)
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}
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}
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}
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// joinMe performs !joinme functionality. Finds the channel and moves the bot.
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// The bot does not move if it is already playing audio to others.
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func joinMe(user *gumble.User) {
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if dj.audioStream.IsPlaying() && len(dj.client.Self.Channel.Users) > 1 {
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user.Send(PEOPLE_ARE_LISTENING_TO_ME)
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} else {
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dj.client.Self.Move(user.Channel)
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}
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}
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// reload performs !reload functionality. Tells command submitter if the reload completed successfully.
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func reload(user *gumble.User) {
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if err := loadConfiguration(); err == nil {
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dj.SendPrivateMessage(user, CONFIG_RELOAD_SUCCESS_MSG)
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}
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}
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// reset performs !reset functionality. Clears the song queue, stops playing audio, and deletes all
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// remaining songs in the ~/.mumbledj/songs directory.
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func reset(username string) {
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dj.queue.queue = dj.queue.queue[:0]
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if dj.audioStream.IsPlaying() {
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if err := dj.audioStream.Stop(); err != nil {
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panic(err)
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}
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}
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if err := deleteSongs(); err == nil {
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dj.client.Self.Channel.Send(fmt.Sprintf(QUEUE_RESET_HTML, username), false)
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} else {
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panic(err)
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}
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}
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// numSongs performs !numsongs functionality. Uses the SongQueue traversal function to traverse the
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// queue with a function call that increments a counter. Once finished, the bot outputs
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// the number of songs in the queue to chat.
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func numSongs() {
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songCount := 0
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dj.queue.Traverse(func(i int, song Song) {
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songCount++
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})
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dj.client.Self.Channel.Send(fmt.Sprintf(NUM_SONGS_HTML, songCount), false)
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}
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// nextSong performs !nextsong functionality. Uses the SongQueue PeekNext function to peek at the next
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// item if it exists. The user will then be sent a message containing the title and submitter
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// of the next item if it exists.
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func nextSong(user *gumble.User) {
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if song, err := dj.queue.PeekNext(); err != nil {
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dj.SendPrivateMessage(user, NO_SONG_NEXT_MSG)
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} else {
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dj.SendPrivateMessage(user, fmt.Sprintf(NEXT_SONG_HTML, song.Title(), song.Submitter()))
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}
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}
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// currentSong performs !currentsong functionality. Sends the user who submitted the currentsong command
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// information about the song currently playing.
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func currentSong(user *gumble.User) {
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if dj.audioStream.IsPlaying() {
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if dj.queue.CurrentSong().Playlist() == nil {
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dj.SendPrivateMessage(user, fmt.Sprintf(CURRENT_SONG_HTML, dj.queue.CurrentSong().Title(), dj.queue.CurrentSong().Submitter()))
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} else {
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dj.SendPrivateMessage(user, fmt.Sprintf(CURRENT_SONG_PLAYLIST_HTML, dj.queue.CurrentSong().Title(),
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dj.queue.CurrentSong().Submitter(), dj.queue.CurrentSong().Playlist().Title()))
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}
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} else {
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dj.SendPrivateMessage(user, NO_MUSIC_PLAYING_MSG)
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}
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}
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// setComment performs !setcomment functionality. Sets the bot's comment to whatever text is supplied in the argument.
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func setComment(user *gumble.User, comment string) {
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dj.client.Self.SetComment(comment)
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dj.SendPrivateMessage(user, COMMENT_UPDATED_MSG)
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}
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// numCached performs !numcached functionality. Displays the number of songs currently cached on disk at ~/.mumbledj/songs.
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func numCached(user *gumble.User) {
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if dj.conf.Cache.Enabled {
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dj.cache.Update()
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dj.SendPrivateMessage(user, fmt.Sprintf(NUM_CACHED_MSG, dj.cache.NumSongs))
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} else {
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dj.SendPrivateMessage(user, CACHE_NOT_ENABLED_MSG)
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}
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}
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// cacheSize performs !cachesize functionality. Displays the total file size of the cached audio files.
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func cacheSize(user *gumble.User) {
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if dj.conf.Cache.Enabled {
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dj.cache.Update()
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dj.SendPrivateMessage(user, fmt.Sprintf(CACHE_SIZE_MSG, float64(dj.cache.TotalFileSize/1048576)))
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} else {
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dj.SendPrivateMessage(user, CACHE_NOT_ENABLED_MSG)
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}
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}
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// kill performs !kill functionality. First cleans the ~/.mumbledj/songs directory to get rid of any
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// excess m4a files. The bot then safely disconnects from the server.
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func kill() {
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if err := deleteSongs(); err != nil {
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panic(err)
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}
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if err := dj.client.Disconnect(); err == nil {
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fmt.Println("Kill successful. Goodbye!")
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os.Exit(0)
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} else {
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panic(errors.New("An error occurred while disconnecting from the server."))
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}
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}
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// deleteSongs deletes songs from ~/.mumbledj/songs.
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func deleteSongs() error {
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songsDir := fmt.Sprintf("%s/.mumbledj/songs", dj.homeDir)
|
|
if err := os.RemoveAll(songsDir); err != nil {
|
|
return errors.New("An error occurred while deleting the audio files.")
|
|
}
|
|
if err := os.Mkdir(songsDir, 0777); err != nil {
|
|
return errors.New("An error occurred while recreating the songs directory.")
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// shuffles the song list
|
|
func shuffleSongs(user *gumble.User, username string) {
|
|
if dj.queue.Len() > 1 {
|
|
dj.queue.ShuffleSongs()
|
|
dj.client.Self.Channel.Send(fmt.Sprintf(SHUFFLE_SUCCESS_MSG, username), false)
|
|
} else {
|
|
dj.SendPrivateMessage(user, CANT_SHUFFLE_MSG)
|
|
}
|
|
}
|
|
|
|
// handles toggling of automatic shuffle playing
|
|
func toggleAutomaticShuffle(activate bool, user *gumble.User, username string) {
|
|
if dj.conf.General.AutomaticShuffleOn != activate {
|
|
dj.conf.General.AutomaticShuffleOn = activate
|
|
if activate {
|
|
dj.client.Self.Channel.Send(fmt.Sprintf(SHUFFLE_ON_MESSAGE, username), false)
|
|
} else {
|
|
dj.client.Self.Channel.Send(fmt.Sprintf(SHUFFLE_OFF_MESSAGE, username), false)
|
|
}
|
|
} else if activate {
|
|
dj.SendPrivateMessage(user, SHUFFLE_ACTIVATED_ERROR_MESSAGE)
|
|
} else {
|
|
dj.SendPrivateMessage(user, SHUFFLE_DEACTIVATED_ERROR_MESSAGE)
|
|
}
|
|
}
|
|
|
|
// listSongs handles !listSongs functionality. Sends a private message to the user a list of all songs in the queue
|
|
func listSongs(user *gumble.User, value string) {
|
|
if dj.audioStream.IsPlaying() {
|
|
num := 0
|
|
if value == "" {
|
|
num = dj.queue.Len()
|
|
} else {
|
|
if parsedNum, err := strconv.Atoi(value); err != nil {
|
|
num = dj.queue.Len()
|
|
} else {
|
|
num = parsedNum
|
|
}
|
|
}
|
|
var buffer bytes.Buffer
|
|
dj.queue.Traverse(func(i int, song Song) {
|
|
if i < num {
|
|
buffer.WriteString(fmt.Sprintf(SONG_LIST_HTML, i+1, song.Title(), song.Submitter()))
|
|
}
|
|
})
|
|
dj.SendPrivateMessage(user, buffer.String())
|
|
} else {
|
|
dj.SendPrivateMessage(user, NO_MUSIC_PLAYING_MSG)
|
|
}
|
|
}
|
|
|
|
// version handles !version functionality. Sends a private message to the user with the most recent version of MumbleDJ
|
|
func version(user *gumble.User) {
|
|
dj.SendPrivateMessage(user, DJ_VERSION)
|
|
}
|
|
|