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mumbledj/commands/nexttrack.go

61 lines
1.9 KiB
Go

/*
* MumbleDJ
* By Matthieu Grieger
* commands/nexttrack.go
* Copyright (c) 2016 Matthieu Grieger (MIT License)
*/
package commands
import (
"errors"
"fmt"
"github.com/layeh/gumble/gumble"
"github.com/spf13/viper"
)
// NextTrackCommand is a command that outputs information related to the next
// track in the queue (if one exists).
type NextTrackCommand struct{}
// Aliases returns the current aliases for the command.
func (c *NextTrackCommand) Aliases() []string {
return viper.GetStringSlice("commands.nexttrack.aliases")
}
// Description returns the description for the command.
func (c *NextTrackCommand) Description() string {
return viper.GetString("commands.nexttrack.description")
}
// IsAdminCommand returns true if the command is only for admin use, and
// returns false otherwise.
func (c *NextTrackCommand) IsAdminCommand() bool {
return viper.GetBool("commands.nexttrack.is_admin")
}
// Execute executes the command with the given user and arguments.
// Return value descriptions:
// string: A message to be returned to the user upon successful execution.
// bool: Whether the message should be private or not. true = private,
// false = public (sent to whole channel).
// error: An error message to be returned upon unsuccessful execution.
// If no error has occurred, pass nil instead.
// Example return statement:
// return "This is a private message!", true, nil
func (c *NextTrackCommand) Execute(user *gumble.User, args ...string) (string, bool, error) {
length := DJ.Queue.Length()
if length == 0 {
return "", true, errors.New(viper.GetString("commands.common_messages.no_tracks_error"))
}
if length == 1 {
return "", true, errors.New(viper.GetString("commands.nexttrack.messages.current_track_only_error"))
}
nextTrack, _ := DJ.Queue.PeekNextTrack()
return fmt.Sprintf(viper.GetString("commands.nexttrack.messages.next_track"),
nextTrack.GetTitle(), nextTrack.GetSubmitter()), true, nil
}