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plugin_bot.go
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plugin_bot.go
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package commands
import (
"context"
"fmt"
"github.com/jonas747/dcmd"
"github.com/jonas747/discordgo"
"github.com/jonas747/dstate"
"github.com/jonas747/yagpdb/bot"
"github.com/jonas747/yagpdb/bot/eventsystem"
"github.com/jonas747/yagpdb/common"
"github.com/mediocregopher/radix"
"github.com/pkg/errors"
"sync"
"sync/atomic"
"time"
)
var (
CommandSystem *dcmd.System
)
var _ bot.BotInitHandler = (*Plugin)(nil)
var _ bot.BotStopperHandler = (*Plugin)(nil)
func (p *Plugin) BotInit() {
eventsystem.AddHandler(HandleGuildCreate, eventsystem.EventGuildCreate)
eventsystem.AddHandler(handleMsgCreate, eventsystem.EventMessageCreate)
CommandSystem.State = bot.State
}
func (p *Plugin) StopBot(wg *sync.WaitGroup) {
atomic.StoreInt32(shuttingDown, 1)
startedWaiting := time.Now()
for {
runningcommandsLock.Lock()
n := len(runningCommands)
runningcommandsLock.Unlock()
if n < 1 {
wg.Done()
return
}
if time.Since(startedWaiting) > time.Second*60 {
// timeout
logger.Infof("[commands] timeout waiting for %d commands to finish running (d=%s)", n, time.Since(startedWaiting))
wg.Done()
return
}
logger.Infof("[commands] waiting for %d commands to finish running (d=%s)", n, time.Since(startedWaiting))
time.Sleep(time.Millisecond * 500)
}
}
func YAGCommandMiddleware(inner dcmd.RunFunc) dcmd.RunFunc {
return func(data *dcmd.Data) (interface{}, error) {
yc, ok := data.Cmd.Command.(*YAGCommand)
if !ok {
resp, err := inner(data)
// Filter the response
if data.GS != nil {
if resp == nil && err != nil {
err = errors.New(FilterResp(err.Error(), data.GS.ID).(string))
} else if resp != nil {
resp = FilterResp(resp, data.GS.ID)
}
}
return resp, err
}
if data.GS != nil {
ms, err := bot.GetMember(data.GS.ID, data.Msg.Author.ID)
if err != nil {
return nil, errors.WithMessage(err, "failed fetching member")
}
data = data.WithContext(context.WithValue(data.Context(), CtxKeyMS, ms))
}
// Check if the user can execute the command
canExecute, resp, settings, err := yc.checkCanExecuteCommand(data, data.CS)
if resp != "" {
// yc.PostCommandExecuted(settings, data, "", errors.WithMessage(err, "checkCanExecuteCommand"))
// m, err := common.BotSession.ChannelMessageSend(cState.ID(), resp)
// go yc.deleteResponse([]*discordgo.Message{m})
return nil, nil
}
if !canExecute {
return nil, nil
}
if err != nil {
return nil, err
}
data = data.WithContext(context.WithValue(data.Context(), CtxKeyCmdSettings, settings))
// Lock the command for execution
if !BlockingAddRunningCommand(data.Msg.GuildID, data.Msg.ChannelID, data.Msg.Author.ID, yc, time.Second*60) {
if atomic.LoadInt32(shuttingDown) == 1 {
return yc.Name + ": Bot is shutting down or restarting, please try again in a couple seconds...", nil
}
return yc.Name + ": Gave up trying to run command after 60 seconds waiting for your previous instance of this command to finish", nil
}
defer removeRunningCommand(data.Msg.GuildID, data.Msg.ChannelID, data.Msg.Author.ID, yc)
innerResp, err := inner(data)
// Send the response
yc.PostCommandExecuted(settings, data, innerResp, err)
return nil, nil
}
}
func FilterResp(in interface{}, guildID int64) interface{} {
switch t := in.(type) {
case string:
return FilterBadInvites(t, guildID, "[removed-invite]")
case error:
return FilterBadInvites(t.Error(), guildID, "[removed-invite]")
}
return in
}
func AddRootCommands(cmds ...*YAGCommand) {
for _, v := range cmds {
CommandSystem.Root.AddCommand(v, v.GetTrigger())
}
}
func handleMsgCreate(evt *eventsystem.EventData) {
m := evt.MessageCreate()
if m.Author == nil || m.Author.ID == common.BotUser.ID || m.WebhookID != 0 {
// Pls no panicerinos or banerinos self, also ignore webhooks
return
}
abort := false
for _, filterFunc := range MessageFilterFuncs {
if !filterFunc(m.Message) {
abort = true
}
}
if abort {
return
}
CommandSystem.HandleMessageCreate(common.BotSession, evt.MessageCreate())
}
func (p *Plugin) Prefix(data *dcmd.Data) string {
prefix, err := GetCommandPrefix(data.GS.ID)
if err != nil {
logger.WithError(err).Error("Failed retrieving commands prefix")
}
return prefix
}
var cmdHelp = &YAGCommand{
Name: "Help",
Aliases: []string{"commands", "h", "how", "command"},
Description: "Shows help about all or one specific command",
CmdCategory: CategoryGeneral,
RunInDM: true,
Arguments: []*dcmd.ArgDef{
&dcmd.ArgDef{Name: "command", Type: dcmd.String},
},
RunFunc: cmdFuncHelp,
Cooldown: 10,
}
func CmdNotFound(search string) string {
return fmt.Sprintf("Couldn't find command %q", search)
}
func cmdFuncHelp(data *dcmd.Data) (interface{}, error) {
target := data.Args[0].Str()
var resp []*discordgo.MessageEmbed
// Send the targetted help in the channel it was requested in
resp = dcmd.GenerateTargettedHelp(target, data, data.ContainerChain[0], &dcmd.StdHelpFormatter{})
if target != "" {
if len(resp) != 1 {
// Send command not found in same channel
return CmdNotFound(target), nil
}
// Send short help in same channel
return resp, nil
}
// Send full help in DM
channel, err := common.BotSession.UserChannelCreate(data.Msg.Author.ID)
if err != nil {
return "Something went wrong, maybe you have DM's disabled? I don't want to spam this channel so here's a external link to available commands: <https://docs.yagpdb.xyz/commands>", err
}
for _, v := range resp {
_, err := common.BotSession.ChannelMessageSendEmbed(channel.ID, v)
if err != nil {
return "Something went wrong, maybe you have DM's disabled? I don't want to spam this channel so here's a external link to available commands: <https://docs.yagpdb.xyz/commands>", err
}
}
return "You've got mail!", nil
}
func HandleGuildCreate(evt *eventsystem.EventData) {
g := evt.GuildCreate()
var prefixExists bool
err := common.RedisPool.Do(radix.Cmd(&prefixExists, "EXISTS", "command_prefix:"+discordgo.StrID(g.ID)))
if err != nil {
logger.WithError(err).Error("Failed checking if prefix exists")
return
}
if !prefixExists {
defaultPrefix := "-"
if common.Testing {
defaultPrefix = "("
}
common.RedisPool.Do(radix.Cmd(nil, "SET", "command_prefix:"+discordgo.StrID(g.ID), defaultPrefix))
logger.WithField("guild", g.ID).WithField("g_name", g.Name).Info("Set command prefix to default (" + defaultPrefix + ")")
}
}
var cmdPrefix = &YAGCommand{
Name: "Prefix",
Description: "Shows command prefix of the current server, or the specified server",
CmdCategory: CategoryTool,
Arguments: []*dcmd.ArgDef{
&dcmd.ArgDef{Name: "Server ID", Type: dcmd.Int, Default: 0},
},
RunFunc: func(data *dcmd.Data) (interface{}, error) {
targetGuildID := data.Args[0].Int64()
if targetGuildID == 0 {
targetGuildID = data.GS.ID
}
prefix, err := GetCommandPrefix(targetGuildID)
if err != nil {
return nil, err
}
return fmt.Sprintf("Prefix of `%d`: `%s`", targetGuildID, prefix), nil
},
}
func ContextMS(ctx context.Context) *dstate.MemberState {
v := ctx.Value(CtxKeyMS)
if v == nil {
return nil
}
return v.(*dstate.MemberState)
}