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commands.go
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commands.go
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package autodelete
import (
"bytes"
"fmt"
"os"
"strconv"
"strings"
"time"
"github.com/bwmarrin/discordgo"
)
const textHelp = `Commands:
@AutoDelete set [duration: 30m] [count: 10] - starts this channel for message auto-deletion
Duration or message count can be specified as ` + "`-`" + ` to not use that, but at least one must be specified. Use "set 0 0" to disable the bot.
@AutoDelete help - prints this help message
For more help, check <https://github.com/riking/AutoDelete> or join the help server: <https://discord.gg/FUGn8yE>`
const emojiBusy = `🔄`
const emojiDone = `✅`
func (b *Bot) GetMsgChGuild(m *discordgo.Message) (*discordgo.Channel, *discordgo.Guild) {
ch, err := b.Channel(m.ChannelID)
if err != nil {
return nil, nil
}
guild, err := b.s.State.Guild(ch.GuildID)
if err != nil {
return nil, nil
}
return ch, guild
}
func CommandHelp(b *Bot, m *discordgo.Message, rest []string) {
b.s.ChannelMessageSend(m.ChannelID, textHelp)
}
func CommandAdminHelp(b *Bot, m *discordgo.Message, rest []string) {
plainContent, err := m.ContentWithMoreMentionsReplaced(b.s)
if err != nil {
plainContent = m.Content
}
ch, guild := b.GetMsgChGuild(m)
if guild == nil {
return
}
b.ReportToLogChannel(fmt.Sprintf(
"Adminhelp command from %s (%s#%s) in #%s (ch id %s) of '%s' (guild id %s):\n%s",
m.Author.Mention(), m.Author.Username, m.Author.Discriminator,
ch.Name, m.ChannelID,
guild.Name, guild.ID,
plainContent,
))
}
func CommandAdminSay(b *Bot, m *discordgo.Message, rest []string) {
if len(rest) == 0 {
return
}
channelID := rest[0]
if m.Author.ID != b.Config.AdminUser {
return
}
ch, err := b.Channel(channelID)
if err != nil {
b.s.ChannelMessageSend(m.ChannelID, "channel does not exist")
return
}
b.s.ChannelMessageSendComplex(ch.ID, &discordgo.MessageSend{
Content: "[ADMIN]",
Embed: &discordgo.MessageEmbed{
Title: "Message from bot administrator",
Description: strings.Join(rest[1:], " "),
},
})
}
func CommandSetDonor(b *Bot, m *discordgo.Message, rest []string) {
var channelID string
if len(rest) == 0 {
channelID = m.ChannelID
} else {
channelID = rest[0]
}
if m.Author.ID != b.Config.AdminUser {
b.s.ChannelMessageSend(m.ChannelID, "patron checking not yet implemented")
return
}
b.mu.RLock()
mCh, ok := b.channels[channelID]
b.mu.RUnlock()
if !ok {
b.s.ChannelMessageSend(m.ChannelID, "not currently deleting in that channel")
return
}
mCh.mu.Lock()
mCh.IsDonor = true
mCh.mu.Unlock()
b.saveChannelConfig(mCh.Export())
b.s.ChannelMessageSend(m.ChannelID, fmt.Sprintf("set %v as a donor channel", channelID))
b.QueueLoadBacklog(mCh, QOSInteractive)
}
func (b *Bot) isDonor(userID string) (bool, error) {
if b.Config.DonorGuild == "" {
return false, nil
}
member, err := b.s.GuildMember(b.Config.DonorGuild, userID)
if err != nil {
return false, err
}
for _, r := range member.Roles {
if b.donorRoles[r] {
return true, nil
}
}
return false, nil
}
func CommandCheck(b *Bot, m *discordgo.Message, rest []string) {
const perm = discordgo.PermissionManageMessages
apermissions, err := b.s.UserChannelPermissions(m.Author.ID, m.ChannelID)
if err != nil {
b.s.ChannelMessageSend(m.ChannelID, "could not check your permissions: "+err.Error())
return
}
if apermissions&perm == 0 {
b.s.ChannelMessageSend(m.ChannelID, "You must have the Manage Messages permission to change AutoDelete settings.")
return
}
mCh, err := b.GetChannel(m.ChannelID, QOSInteractive)
if err != nil {
b.s.ChannelMessageSend(m.ChannelID, fmt.Sprintf("Error checking settings: %v", err))
return
}
if mCh == nil {
b.s.ChannelMessageSend(m.ChannelID, "This channel is not set up for deletion.")
return
}
duration := mCh.MessageLiveTime
count := mCh.MaxMessages
keeps := mCh.KeepMessages
var msg bytes.Buffer
msg.WriteString("Settings: Messages in this channel will ")
if duration != 0 && count != 0 {
fmt.Fprintf(&msg, "be deleted after %s or %d messages, whichever comes first.", duration, count)
} else if duration != 0 {
fmt.Fprintf(&msg, "be deleted after %s.", duration)
} else if count != 0 {
fmt.Fprintf(&msg, "be deleted after %d other messages.", count)
} else {
fmt.Fprintf(&msg, "[BUG?] not be auto-deleted (but are still being incorrectly tracked???).")
}
if len(keeps) > 1 {
fmt.Fprintf(&msg, " I am aware of %d pinned messages.", len(keeps)-1)
}
b.s.ChannelMessageSend(m.ChannelID, msg.String())
}
func CommandModify(b *Bot, m *discordgo.Message, rest []string) {
var duration time.Duration
var count int
var anySet bool
const perm = discordgo.PermissionManageMessages
channel, err := b.Channel(m.ChannelID)
if err != nil {
fmt.Println("[ERR ] Could not load channel of mention")
return
}
apermissions, err := b.s.UserChannelPermissions(m.Author.ID, m.ChannelID)
if err != nil {
b.s.ChannelMessageSend(m.ChannelID, "could not check your permissions: "+err.Error())
return
}
if apermissions&perm == 0 {
b.s.ChannelMessageSend(m.ChannelID, "You must have the Manage Messages permission to change AutoDelete settings.")
return
}
for _, v := range rest {
d, err := time.ParseDuration(v)
if err == nil {
duration = d
anySet = true
continue
}
n, err := strconv.ParseInt(v, 10, 64)
if err == nil {
count = int(n)
anySet = true
continue
}
}
if !anySet {
b.s.ChannelMessageSend(m.ChannelID, "Bad format for `set` command. Provide a count (20) and/or a duration (90m) to purge messages after. Maximum unit is hours.")
return
}
if duration < 0 || count < 0 {
b.s.ChannelMessageSend(m.ChannelID, "Count and/or duration cannot be negative.")
return
}
var confMessage *discordgo.Message
doNotReload := false
if duration != 0 && count != 0 {
confMessage, err = b.s.ChannelMessageSend(m.ChannelID, fmt.Sprintf("Messages in this channel will be deleted after %s or %d messages, whichever comes first.", duration, count))
} else if duration != 0 {
confMessage, err = b.s.ChannelMessageSend(m.ChannelID, fmt.Sprintf("Messages in this channel will be deleted after %s.", duration))
} else if count != 0 {
confMessage, err = b.s.ChannelMessageSend(m.ChannelID, fmt.Sprintf("Messages in this channel will be deleted after %d other messages.", count))
} else {
confMessage, err = b.s.ChannelMessageSend(m.ChannelID, fmt.Sprintf("Messages in this channel will not be auto-deleted."))
doNotReload = true
}
if err != nil {
fmt.Println("Error sending config message:", err)
b.s.ChannelMessageSend(m.ChannelID, "Encountered error, settings were not changed.\n"+err.Error())
return
}
emojiErr := b.s.MessageReactionAdd(m.ChannelID, confMessage.ID, emojiBusy)
if emojiErr != nil {
fmt.Println("[Warn]", "could not react to config reply", emojiErr)
}
isDonor, err := b.isDonor(m.Author.ID)
if err != nil {
fmt.Println("[Warn]", "could not check donor status", err)
}
b.mu.RLock()
mCh := b.channels[m.ChannelID]
b.mu.RUnlock()
var newManagedChannel = ManagedChannelMarshal{
ID: m.ChannelID,
GuildID: channel.GuildID,
KeepMessages: []string{confMessage.ID},
LiveTime: duration,
MaxMessages: count,
HasPins: channel.LastPinTimestamp != "",
IsDonor: isDonor,
}
if mCh != nil {
newManagedChannel = mCh.Export()
newManagedChannel.LiveTime = duration
newManagedChannel.MaxMessages = count
}
if doNotReload {
err = b.deleteChannelConfig(m.ChannelID)
if os.IsNotExist(err) {
err = nil
}
} else {
err = b.setChannelConfig(newManagedChannel)
}
if err != nil {
fmt.Println("Error:", err)
b.s.ChannelMessageSend(m.ChannelID, "Encountered error, settings may or may not have saved.\n"+err.Error())
}
fmt.Println("[load] Changed settings for channel", m.ChannelID, confMessage.Content)
if doNotReload {
if mCh != nil {
mCh.Disable()
}
}
// Wait for LoadBacklog() to complete by watching isStarted
go func() {
channelID := m.ChannelID
msgID := confMessage.ID
numMessages := 0
b.mu.RLock()
mCh := b.channels[channelID]
b.mu.RUnlock()
if mCh != nil {
select {
case <-mCh.isStarted:
case <-time.After(30 * time.Minute):
}
// Check for backlog length exceeded
mCh.mu.Lock()
numMessages = len(mCh.liveMessages)
mCh.mu.Unlock()
}
// Check for backlog length exceeded
limit := backlogLimitNonDonor
if isDonor {
limit = backlogLimitDonor
}
if count > limit {
b.s.ChannelMessageSend(channelID, fmt.Sprintf("⚠️ The number of messages configured for deletion is over %d. Messages will not be reliably deleted. (Configured: %d)", limit, count))
} else if numMessages >= limit {
b.s.ChannelMessageSend(channelID, fmt.Sprintf("⚠️ The number of messages in this channel is over %d. Messages may not be reliably deleted. (Saw: %d)", limit, numMessages))
}
// Give done reaction
b.s.MessageReactionRemove(channelID, msgID, emojiBusy, "@me")
emojiErr = b.s.MessageReactionAdd(channelID, msgID, emojiDone)
time.Sleep(30 * time.Second)
b.s.MessageReactionRemove(channelID, msgID, emojiDone, "@me")
}()
}
func CommandLeave(b *Bot, m *discordgo.Message, rest []string) {
var guildID string
if len(rest) == 0 {
channel, err := b.Channel(m.ChannelID)
if err != nil {
fmt.Println("[cmdE] channel does not exist", m.ChannelID)
return
}
guildID = channel.GuildID
apermissions, err := b.s.UserChannelPermissions(m.Author.ID, m.ChannelID)
if err != nil {
apermissions = 0
}
perm := int64(discordgo.PermissionManageServer)
if apermissions&perm != perm {
b.s.ChannelMessageSend(m.ChannelID, "Leaving the current server requires MANAGE_SERVER permission.")
return
}
} else if rest[0] == "channel" && len(rest) == 2 {
if m.Author.ID != b.Config.AdminUser {
b.s.ChannelMessageSend(m.ChannelID, "Leaving other servers can only be done by the bot controller.")
return
}
channel, err := b.Channel(rest[1])
if err != nil {
b.s.ChannelMessageSend(m.ChannelID, fmt.Sprintf("Could not find channel %q", rest[0]))
return
}
guildID = channel.GuildID
} else {
if m.Author.ID != b.Config.AdminUser {
b.s.ChannelMessageSend(m.ChannelID, "Leaving other servers can only be done by the bot controller.")
return
}
guildID = rest[0]
}
if guildID == b.Config.DonorGuild {
b.s.ChannelMessageSend(m.ChannelID, "Bot will never voluntarily leave the primary guild")
return
}
fmt.Println("[leav]", guildID, m.Author.String())
err := b.s.GuildLeave(guildID)
if err != nil {
msg := fmt.Sprintf("Error leaving guild ID %s: %v", guildID, err)
b.s.ChannelMessageSend(m.ChannelID, msg)
fmt.Println("[cmdE] error leaving:", err)
} else {
msg := fmt.Sprintf("Leaving guild ID %s: ok", guildID)
b.s.ChannelMessageSend(m.ChannelID, msg)
}
}
var commands = map[string]func(b *Bot, m *discordgo.Message, rest []string){
"help": CommandHelp,
"set": CommandModify,
"start": CommandModify,
"setup": CommandModify,
"leave": CommandLeave,
"check": CommandCheck,
"ahelp": CommandAdminHelp,
"adminhelp": CommandAdminHelp,
"amsg": CommandAdminHelp,
"adminmsg": CommandAdminHelp,
"support": CommandAdminHelp,
"adminsay": CommandAdminSay,
"setdonor": CommandSetDonor,
}