add image to welcome fallback message

I didn’t even know go could panic like that selphyDerp

CHANGELOG.md

@@ -1,6 +1,18 @@
 # Selphybot Changelog
 Updates are listed in reverse chronological order.
 
+### 1.5 (dev)
+- added !vc to create temporary voice channels
+
+### 1.4
+- a copy of each deleted message is now send via DM to the author (suggested by CommanderLook)
+- seasonal fluff
+- finally use gofmt
+- better logging of own messages and embeds
+- logging always occurs after the action that is being logged
+- redirect function is much cleaner now
+- commands can be limited to certain channels
+
 ### 1.3
 - use global array of pointers to commands to allow easier modification and avoid unnecessary memcpy
 - added feedback to !complain (used to work but was forgotten when refactoring)

build.sh

@@ -0,0 +1,3 @@
+#!/bin/sh
+
+go build -o selphybot *.go

command.go

@@ -1,250 +1,333 @@
 package main
 
 import (
-    "fmt"
-    "github.com/bwmarrin/discordgo"
-    "github.com/deckarep/golang-set"
-    "strings"
-    "time"
-    "log"
-    "regexp"
+	"fmt"
+	"github.com/bwmarrin/discordgo"
+	"github.com/deckarep/golang-set"
+	"log"
+	"regexp"
+	"strings"
+	"time"
 )
 
 type CommandType int
 
 // These are used to specify Command.CommandType when registering new commands
 const (
-    CommandTypePrefix      CommandType = 0
-    CommandTypeFullMatch   CommandType = 1
-    CommandTypeRegex       CommandType = 2
-    CommandTypeContains    CommandType = 3
+	CommandTypePrefix    CommandType = 0
+	CommandTypeFullMatch CommandType = 1
+	CommandTypeRegex     CommandType = 2
+	CommandTypeContains  CommandType = 3
 )
 
- /*
-    This struct represents a command object.
-    The options should be self-explanatory, but they are also explained in the readme.
-    A struct can be initialized by passing any number of its attributes as parameters.
-    Everything not set will be set to the go-usual defaults ("" for string, 0 for int, false for bool, nil for the rest)
-    Any command that has a Trigger is valid (but useless if nothing else is specified)
- */
+/*
+   This struct represents a command object.
+   The options should be self-explanatory, but they are also explained in the readme.
+   A struct can be initialized by passing any number of its attributes as parameters.
+   Everything not set will be set to the go-usual defaults ("" for string, 0 for int, false for bool, nil for the rest)
+   Any command that has a Trigger is valid (but useless if nothing else is specified)
+*/
 type Command struct {
-    Trigger string                          // must be specified
-    Output string                           // no output if unspecified
-    OutputEmbed *discordgo.MessageEmbed     // no embed output if unspecified
-    Type CommandType                        // defaults to Prefix
-    Cooldown int                            // defaults to 0 (no cooldown)
-    OutputIsReply bool
-    RequiresMention bool
-    DeleteInput bool
-    DMOnly bool
-    AdminOnly bool
-    IgnoreCase bool
-    // for custom commands that go beyond prints and deletions
-    Function func(*discordgo.Session, *discordgo.MessageCreate)
-
-    UsersOnCooldown mapset.Set            // don’t set this manually (it’s overwritten anyway)
-}
+	Trigger         string                  // must be specified
+	Output          string                  // no output if unspecified
+	OutputEmbed     *discordgo.MessageEmbed // no embed output if unspecified
+	Type            CommandType             // defaults to Prefix
+	Cooldown        int                     // defaults to 0 (no cooldown)
+	OutputIsReply   bool
+	RequiresMention bool
+	DeleteInput     bool
+	DMOnly          bool
+	AdminOnly       bool
+	IgnoreCase      bool
+	// for custom commands that go beyond prints and deletions
+	Function        func(*discordgo.Session, *discordgo.MessageCreate)
+	AllowedChannels mapset.Set // allowed everywhere if blank
 
+	UsersOnCooldown mapset.Set // don’t set this manually (it’s overwritten anyway)
+}
 
 // Performs basic input validation on a given command and adds it to the global command array
 func registerCommand(command Command) {
-    if command.Trigger == "" {
-        fmt.Println("Cannot register a command with no trigger. Skipping.")
-        return
-    }
-    if command.IgnoreCase {
-        command.Trigger = strings.ToLower(command.Trigger)
-    }
-    command.UsersOnCooldown = mapset.NewSet()
-    commands = append(commands, &command)
+	if command.Trigger == "" {
+		fmt.Println("Cannot register a command with no trigger. Skipping.")
+		return
+	}
+	if command.IgnoreCase {
+		command.Trigger = strings.ToLower(command.Trigger)
+	}
+	command.UsersOnCooldown = mapset.NewSet()
+	if command.AllowedChannels == nil {
+		command.AllowedChannels = mapset.NewSet()
+	}
+	commands = append(commands, &command)
 }
 
- /*
-    Any message that the bot can read is evaluated here.
-    The message is matched against each of the command triggers depending on the respective match type.
-    If one of the commands matches, execute that command and return.
-    Only one command can be executed per message. Earlier defined commands take precedence.
-    This is a deliberate choice (for now).
- */
+/*
+   Any message that the bot can read is evaluated here.
+   The message is matched against each of the command triggers depending on the respective match type.
+   If one of the commands matches, execute that command and return.
+   Only one command can be executed per message. Earlier defined commands take precedence.
+   This is a deliberate choice (for now).
+*/
 func evaluateMessage(s *discordgo.Session, m *discordgo.MessageCreate) {
-    if m.Author.ID == s.State.User.ID {
-        log.Printf("<Self> %s", m.Content)
-        return
-    }
-    for _, command := range commands {
-        content := m.Content
-        if command.IgnoreCase {
-            content = strings.ToLower(content)
-        }
-        if command.RequiresMention {
-            command.Trigger = fmt.Sprintf(command.Trigger, s.State.User.ID)
-        }
-        switch command.Type {
-        case CommandTypePrefix:
-            if strings.HasPrefix(content, command.Trigger) {
-                executeCommand(s, m, command)
-                return
-            }
-        case CommandTypeFullMatch:
-            if content == command.Trigger {
-                executeCommand(s, m, command)
-                return
-            }
-        case CommandTypeRegex:
-            match, _ := regexp.MatchString(command.Trigger, content)
-            if match {
-                executeCommand(s, m, command)
-                return
-            }
-        case CommandTypeContains:
-            if strings.Contains(content, command.Trigger) {
-                executeCommand(s, m, command)
-                return
-            }
-        }
-    }
+	if m.Author.ID == s.State.User.ID {
+		// Properly log embeds
+		if len(m.Embeds) > 0 {
+			log.Printf("<Self> %s", m.Embeds[0].Description)
+		} else {
+			log.Printf("<Self> %s", m.Content)
+		}
+		return
+	}
+	for _, command := range commands {
+		content := m.Content
+		if command.IgnoreCase {
+			content = strings.ToLower(content)
+		}
+		if command.RequiresMention {
+			command.Trigger = fmt.Sprintf(command.Trigger, s.State.User.ID)
+		}
+		switch command.Type {
+		case CommandTypePrefix:
+			if strings.HasPrefix(content, command.Trigger) {
+				executeCommand(s, m, command)
+				return
+			}
+		case CommandTypeFullMatch:
+			if content == command.Trigger {
+				executeCommand(s, m, command)
+				return
+			}
+		case CommandTypeRegex:
+			match, _ := regexp.MatchString(command.Trigger, content)
+			if match {
+				executeCommand(s, m, command)
+				return
+			}
+		case CommandTypeContains:
+			if strings.Contains(content, command.Trigger) {
+				executeCommand(s, m, command)
+				return
+			}
+		}
+	}
 }
 
- /*
-    Executes the given command on the given message and session.
-    Sets command cooldowns if necessary and also clears them again.
- */
+/*
+   Executes the given command on the given message and session.
+   Sets command cooldowns if necessary and also clears them again.
+*/
 func executeCommand(session *discordgo.Session, message *discordgo.MessageCreate, command *Command) {
-    if isAdmin(message.Author) || // no restrictions for admins
-            (!command.AdminOnly && (isDM(session, message) || !command.UsersOnCooldown.Contains(message.Author.ID)) &&
-            (!command.DMOnly || isDM(session, message))) {
-
-        log.Printf("Executed command %s triggered by user %s", command.Trigger, userToString(message.Author))
-        if command.Cooldown > 0 && !isDM(session, message) && !isAdmin(message.Author) {
-            command.UsersOnCooldown.Add(message.Author.ID)
-            go removeCooldown(command, message.Author.ID)
-        }
-        if command.Function == nil {
-            // simple reply
-            if command.OutputEmbed == nil {
-                messageContent := generateReply(message, command)
-                session.ChannelMessageSend(message.ChannelID, messageContent)
-            } else {
-                session.ChannelMessageSendEmbed(message.ChannelID, command.OutputEmbed)
-            }
-            if command.DeleteInput {
-                session.ChannelMessageDelete(message.ChannelID, message.ID)
-            }
-        } else {
-            // execute custom function
-            command.Function(session, message)
-        }
-    } else {
-        log.Printf("Denied command %s to user %s.", command.Trigger, userToString(message.Author))
-    }
+	if commandAllowed(session, message, command) {
+		log.Printf("Executed command %s triggered by user %s", command.Trigger, userToString(message.Author))
+		if command.Cooldown > 0 && !isDM(session, message) && !isAdmin(message.Author) {
+			command.UsersOnCooldown.Add(message.Author.ID)
+			go removeCooldown(command, message.Author.ID)
+		}
+		if command.Function == nil {
+			// simple reply
+			if command.OutputEmbed == nil {
+				messageContent := generateReply(message, command)
+				session.ChannelMessageSend(message.ChannelID, messageContent)
+			} else {
+				session.ChannelMessageSendEmbed(message.ChannelID, command.OutputEmbed)
+			}
+			if command.DeleteInput {
+				deleteAndSendViaDM(session, message)
+			}
+		} else {
+			// execute custom function
+			command.Function(session, message)
+		}
+	} else {
+		log.Printf("Denied command %s to user %s.", command.Trigger, userToString(message.Author))
+	}
+}
+
+/*
+ * Check if a user has the permission to trigger a given command.
+ * To be honest, this whole logic is a mess, but I don’t know a better way to handle it.
+ */
+func commandAllowed(session *discordgo.Session, message *discordgo.MessageCreate, command *Command) bool {
+	// no restrictions for admins
+	if isAdmin(message.Author) {
+		return true
+	}
+	// blacklist admin commands for everyone else
+	if command.AdminOnly {
+		return false
+	}
+	// cooldowns are irrelevant in DMs
+	if !isDM(session, message) && command.UsersOnCooldown.Contains(message.Author.ID) {
+		return false
+	}
+	// the command is not limited to DMs or we are inside a DM chat
+	if command.DMOnly && !isDM(session, message) {
+		return false
+	}
+	// no allowed channels = all channels are allowed.
+	// DMs are whitelisted by default
+	if command.AllowedChannels.Cardinality() != 0 &&
+		!command.AllowedChannels.Contains(message.ChannelID) &&
+		isDM(session, message) {
+		return false
+	}
+	return true
 }
 
 func removeCooldown(command *Command, uid string) {
-    time.Sleep(time.Duration(command.Cooldown) * time.Second)
-    if command.UsersOnCooldown.Contains(uid) {
-        command.UsersOnCooldown.Remove(uid)
-    }
+	time.Sleep(time.Duration(command.Cooldown) * time.Second)
+	if command.UsersOnCooldown.Contains(uid) {
+		command.UsersOnCooldown.Remove(uid)
+	}
+}
+
+func deleteAndSendViaDM(s *discordgo.Session, message *discordgo.MessageCreate) {
+	s.ChannelMessageDelete(message.ChannelID, message.ID)
+	dm := getDMChannelFromMessage(s, message)
+	s.ChannelMessageSend(dm.ID, "Deine Nachricht wurde gelöscht, weil sie ein verbotenes Wort enthielt. Falls du sie editieren und erneut abschicken willst, hier die Nachricht:")
+	s.ChannelMessageSend(dm.ID, message.Content)
 }
 
 func generateReply(message *discordgo.MessageCreate, command *Command) string {
-    output := command.Output
-    if command.OutputIsReply {
-        output = fmt.Sprintf(output, message.Author.ID)
-    }
-    return output
+	output := command.Output
+	if command.OutputIsReply {
+		output = fmt.Sprintf(output, message.Author.ID)
+	}
+	return output
 }
 
- /*
-    Any message passed to this method will be redirected to config.ModChannel.
-    This is useful for anonymous complaints or similar messages.
+/*
+ * I’m beginning to doubt my own self-imposed limitations of
+ * only allowing func(session, message) to be attached to commands,
+ * but refactoring that might be more effort than it’s worth.
+ * Hence, small wrappers around the redirect function.
  */
-func redirectComplaint(s *discordgo.Session, m *discordgo.MessageCreate) {
-    embed := &discordgo.MessageEmbed {
-            Author:      &discordgo.MessageEmbedAuthor{},
-            Color:       0xbb0000,
-            Description: m.Content,
-    }
-    s.ChannelMessageSendEmbed(config.ModChannel, embed)
-    dm, _ := s.UserChannelCreate(m.Author.ID)
-    s.ChannelMessageSend(dm.ID, config.ComplaintReceivedMessage)
+func modComplain(s *discordgo.Session, m *discordgo.MessageCreate) {
+	success := redirectMessage(s, m, config.ModChannel, true)
+	dm, _ := s.UserChannelCreate(m.Author.ID)
+	if success {
+		s.ChannelMessageSend(dm.ID, config.ComplaintReceivedMessage)
+	} else {
+		s.ChannelMessageSend(dm.ID, "Could not send message. Please tell kageru about this.")
+	}
 }
 
-// copy paste programming btw :haHAA:
-func redirectComplaintToDM(s *discordgo.Session, m *discordgo.MessageCreate) {
-    embed := &discordgo.MessageEmbed {
-            Author:      &discordgo.MessageEmbedAuthor{},
-            Color:       0xbb0000,
-            Description: m.Content,
-    }
-    dm_target, _ := s.UserChannelCreate("190958368301645824")
-    s.ChannelMessageSendEmbed(dm_target.ID, embed)
-    dm, _ := s.UserChannelCreate(m.Author.ID)
-    s.ChannelMessageSend(dm.ID, config.ComplaintReceivedMessage)
+func selphyComplain(s *discordgo.Session, m *discordgo.MessageCreate) {
+	dm_target, _ := s.UserChannelCreate("190958368301645824")
+	success := redirectMessage(s, m, dm_target.ID, true)
+	dm, _ := s.UserChannelCreate(m.Author.ID)
+	if success {
+		s.ChannelMessageSend(dm.ID, config.ComplaintReceivedMessage)
+	} else {
+		s.ChannelMessageSend(dm.ID, "Could not send message. Please tell kageru about this.")
+	}
+}
+
+func redirectMessage(s *discordgo.Session, m *discordgo.MessageCreate, target string, isEmbed bool) bool {
+	var err error
+	if isEmbed {
+		embed := &discordgo.MessageEmbed{
+			// Embed are anonymized by default for now. Fits the use case.
+			Author:      &discordgo.MessageEmbedAuthor{},
+			Color:       0xbb0000,
+			Description: m.Content,
+		}
+		_, err = s.ChannelMessageSendEmbed(target, embed)
+	} else {
+		_, err = s.ChannelMessageSend(target, messageToString(m.Message))
+	}
+	if err != nil {
+		log.Printf("Could not redirect message", err)
+		return false
+	}
+	return true
 }
 
 func echoMessage(s *discordgo.Session, m *discordgo.MessageCreate) {
-    s.ChannelMessageSend(m.ChannelID, m.Content)
+	s.ChannelMessageSend(m.ChannelID, m.Content)
 }
 
 func giveAgeRole(s *discordgo.Session, m *discordgo.MessageCreate) {
-    Member, _ := s.GuildMember(config.ServerID, m.Author.ID)
-    dm, _ := s.UserChannelCreate(Member.User.ID)
-    for command, role := range config.RoleCommands {
-        if m.Content == command {
-            // Found the command that was triggered
-            // This is a restriction imposed by my own wrapper, 
-            // but working around it is not actually necessary for performance and makes the code uglier in other places.
-            for _, newRole := range config.RoleCommands {
-                for _, curRole := range Member.Roles {
-                    // If the user already has one of the available roles, tell him and exit
-                    if newRole == curRole {
-                        if curRole == role {
-                            // User is trying to get the role they already have
-                            s.ChannelMessageSend(dm.ID, "Baka, die Rolle hast du doch schon.")
-                            log.Printf("Denied Role %s to %s. User already has %s", roleName(s.State, curRole), userToString(m.Author), roleName(s.State, curRole))
-                        } else {
-                            s.ChannelMessageSend(dm.ID, "Baka, du kannst nur eine der Rollen haben.")
-                            log.Printf("Denied Role %s to %s. User already has %s", roleName(s.State, curRole), userToString(m.Author), roleName(s.State, curRole))
-                        }
-                        return
-                    }
-                }
-            }
-            log.Printf("Giving Role %s to %s", roleName(s.State, role), userToString(m.Author))
-            s.ChannelMessageSend(dm.ID, "Haaai, Ryoukai desu~")
-            s.GuildMemberRoleAdd(config.ServerID, m.Author.ID, role)
-        }
-    }
+	Member, err := s.GuildMember(config.ServerID, m.Author.ID)
+	if err != nil {
+		log.Printf("User could not be retrieved for role assignment\n%s", err)
+		return
+	}
+	dm, err := s.UserChannelCreate(Member.User.ID)
+	if err != nil {
+		log.Printf("Could not reply to user\n%s", err)
+		return
+	}
+	required := mapset.NewSetWith("416184227672096780", "416184208470310922", "416184150404628480", "416184132473847810", "440996904948465664")
+	for command, role := range config.RoleCommands {
+		if m.Content == command {
+			// Found the command that was triggered
+			// This is a restriction imposed by my own wrapper,
+			// but working around it is not actually necessary for performance and makes the code uglier in other places.
+			for _, newRole := range config.RoleCommands {
+				// check if the user has a twitch sub or any of the patreon roles
+				isAllowed := false
+				for _, curRole := range Member.Roles {
+					if required.Contains(curRole) {
+						isAllowed = true
+					}
+				}
+
+				if !isAllowed {
+					s.ChannelMessageSend(dm.ID, "Du kannst dir keine Rolle zuweisen, da weder Patreon noch Twitch mit deinem Account verlinkt ist oder du Selphy auf keiner dieser Plattformen unterstützt. Bei Problemen wende dich bitte an die `!mods`.")
+					log.Printf("Denied role %s to %s. User is neither patron nor sub.", roleName(s.State, newRole), userToString(m.Author))
+					return
+				}
+				for _, curRole := range Member.Roles {
+					// If the user already has one of the available roles, tell them and exit
+					if newRole == curRole {
+						if curRole == role {
+							// User is trying to get the role they already have
+							s.ChannelMessageSend(dm.ID, "Baka, die Rolle hast du doch schon.")
+							log.Printf("Denied Role %s to %s. User already has %s", roleName(s.State, curRole), userToString(m.Author), roleName(s.State, curRole))
+						} else {
+							s.ChannelMessageSend(dm.ID, "Baka, du kannst nur eine der Rollen haben.")
+							log.Printf("Denied Role %s to %s. User already has %s", roleName(s.State, curRole), userToString(m.Author), roleName(s.State, curRole))
+						}
+						return
+					}
+				}
+			}
+			s.GuildMemberRoleAdd(config.ServerID, m.Author.ID, role)
+			s.ChannelMessageSend(dm.ID, "Haaai, Ryoukai desu~")
+			log.Printf("Giving Role %s to %s", roleName(s.State, role), userToString(m.Author))
+		}
+	}
 }
 
 func getHelpEmbed() *discordgo.MessageEmbed {
-    commandList := "Im Folgenden findest du eine automatisch generierte Liste aller Commands. Um herauszufinden, was sie tun, probiere sie aus oder lies den Source Code (siehe unten).\n```- !complain\n- !scomplain\n"
-    for _, command := range commands {
-        if command.Type != CommandTypeRegex && !command.AdminOnly && !command.DMOnly {
-            commandList += "- " + command.Trigger + "\n"
-        }
-    }
-    commandList += "```"
-    embed := &discordgo.MessageEmbed{
-        Author:      &discordgo.MessageEmbedAuthor{},
-        Color:       0xffb90f,
-        Description: "__Hilfe__",
-        Fields: []*discordgo.MessageEmbedField {
-            &discordgo.MessageEmbedField {
-                Name:   "__Commands__",
-                Value:  commandList,
-                Inline: true,
-            },
-            &discordgo.MessageEmbedField {
-                Name:   "__Bugs__",
-                Value:  fmt.Sprintf("Bei Fragen zum Bot, Vorschlägen, Bugs etc. wende dich bitte an <@%s> oder öffne eine Issue auf https://git.kageru.moe/kageru/discord-selphybot.", config.Admins[0]),
-                Inline: true,
-            },
-        },
-        Thumbnail: &discordgo.MessageEmbedThumbnail{
-            URL: "https://static-cdn.jtvnw.net/emoticons/v1/1068185/3.0",
-        },
-    }
-    return embed
+	commandList := "Im Folgenden findest du eine automatisch generierte Liste aller Commands. Um herauszufinden, was sie tun, probiere sie aus oder lies den Source Code (siehe unten).\n```- !complain\n- !scomplain\n"
+	for _, command := range commands {
+		if command.Type != CommandTypeRegex && !command.AdminOnly && !command.DMOnly {
+			commandList += "- " + command.Trigger + "\n"
+		}
+	}
+	commandList += "```"
+	embed := &discordgo.MessageEmbed{
+		Author:      &discordgo.MessageEmbedAuthor{},
+		Color:       0xffb90f,
+		Description: "__Hilfe__",
+		Fields: []*discordgo.MessageEmbedField{
+			&discordgo.MessageEmbedField{
+				Name:   "__Commands__",
+				Value:  commandList,
+				Inline: true,
+			},
+			&discordgo.MessageEmbedField{
+				Name:   "__Bugs__",
+				Value:  fmt.Sprintf("Bei Fragen zum Bot, Vorschlägen, Bugs etc. wende dich bitte an <@%s> oder öffne eine Issue auf https://git.kageru.moe/kageru/discord-selphybot.", config.Admins[0]),
+				Inline: true,
+			},
+		},
+		Thumbnail: &discordgo.MessageEmbedThumbnail{
+			URL: "https://static-cdn.jtvnw.net/emoticons/v1/1068185/3.0",
+		},
+	}
+	return embed
 }
-

config.go

@@ -1,40 +1,38 @@
 package main
 
 import (
-    "os"
-    "encoding/json"
+	"encoding/json"
+	"os"
 )
 
 type Embed struct {
-    Message string
-    QuestionsTitle string
-    QuestionsText string
-    BugsTitle string
-    BugsText string
-    Image string
+	Message        string
+	QuestionsTitle string
+	QuestionsText  string
+	BugsTitle      string
+	BugsText       string
+	Image          string
 }
 
 type Config struct {
-    Admins []string
-    ServerID string
-    LockedRoleID string
-    Token string
-    WelcomeChannel string
-    GeneralChannel string
-    SendWelcomeDM bool
-    RequireAccept bool
-    ComplaintReceivedMessage string
-    ModChannel string
-    WelcomeEmbed Embed
-    RoleCommands map[string]string
+	Admins                   []string
+	ServerID                 string
+	LockedRoleID             string
+	Token                    string
+	WelcomeChannel           string
+	GeneralChannel           string
+	SendWelcomeDM            bool
+	RequireAccept            bool
+	ComplaintReceivedMessage string
+	ModChannel               string
+	WelcomeEmbed             Embed
+	RoleCommands             map[string]string
 }
 
-
 func readConfig() Config {
-    file, _ := os.Open("config.json")
-    conf := Config{}
-    json.NewDecoder(file).Decode(&conf)
-    file.Close()
-    return conf
+	file, _ := os.Open("config.json")
+	conf := Config{}
+	json.NewDecoder(file).Decode(&conf)
+	file.Close()
+	return conf
 }
-

events.go

@@ -1,55 +1,53 @@
 package main
 
 import (
-    "fmt"
-    "github.com/bwmarrin/discordgo"
-    "log"
+	"fmt"
+	"github.com/bwmarrin/discordgo"
+	"log"
 )
 
 func onJoin(s *discordgo.Session, member *discordgo.GuildMemberAdd) {
-    if !member.User.Bot && config.RequireAccept {
-        s.GuildMemberRoleAdd(config.ServerID, member.User.ID, config.LockedRoleID)
-    }
-    if !member.User.Bot && config.SendWelcomeDM {
-        dm, err := s.UserChannelCreate(member.User.ID)
-        if err != nil {
-            log.Println(fmt.Sprintf("Error creating DM with %s", userToString(member.User), err))
-        } else {
-            embed := getWelcomeEmbed()
-            _, err = s.ChannelMessageSendEmbed(dm.ID, embed)
-            if err != nil {
-                log.Println(fmt.Sprintf("Error sending DM to %s", userToString(member.User), err))
-            }
-        }
-        if err != nil {
-            // if any of the preceding operations produced an error
-            log.Printf("Sending welcome @mention at %s", userToString(member.User))
-            s.ChannelMessageSend(config.GeneralChannel, fmt.Sprintf("Wilkommen <@%s>. Bitte aktiviere vorübergehend DMs für diesen Server und sende eine Nachricht mit !welcome an mich.", member.User.ID))
-        }
-    }
-    log.Printf("User joined: %s", userToString(member.User))
+	if !member.User.Bot && config.RequireAccept {
+		s.GuildMemberRoleAdd(config.ServerID, member.User.ID, config.LockedRoleID)
+	}
+	if !member.User.Bot && config.SendWelcomeDM {
+		dm, err := s.UserChannelCreate(member.User.ID)
+		if err != nil {
+			log.Println(fmt.Sprintf("Error creating DM with %s", userToString(member.User), err))
+		} else {
+			embed := getWelcomeEmbed()
+			_, err = s.ChannelMessageSendEmbed(dm.ID, embed)
+			if err != nil {
+				log.Println(fmt.Sprintf("Error sending DM to %s", userToString(member.User), err))
+			}
+		}
+		if err != nil {
+			// if any of the preceding operations produced an error
+			log.Printf("Sending welcome @mention @%s", userToString(member.User))
+			s.ChannelMessageSend(config.GeneralChannel, fmt.Sprintf("Wilkommen <@%s>. Bitte aktiviere vorübergehend DMs für diesen Server und sende eine Nachricht mit !welcome an mich. https://cdn.discordapp.com/attachments/333450842151714816/591581555219234826/Selphy-queen.png", member.User.ID))
+		}
+	}
+	log.Printf("User joined: %s", userToString(member.User))
 }
 
 func onDM(s *discordgo.Session, m *discordgo.MessageCreate) {
-    log.Printf("Received DM from %s with content: “%s”", userToString(m.Author), m.Content)
-    fmt.Sprintf("Received DM from %s with content: “%s”", userToString(m.Author), m.Content)
-    Member, _ := s.GuildMember(config.ServerID, m.Author.ID)
-    dm, _ := s.UserChannelCreate(Member.User.ID)
-    for comm, role := range config.RoleCommands {
-        if m.Content == comm {
-            for _, irole := range config.RoleCommands {
-                for _, mrole := range Member.Roles {
-                    if irole == mrole {
-                        s.ChannelMessageSend(dm.ID, "Baka, du kannst nur eine der Rollen haben.")
-                        log.Printf("Denied Role %s to %s. User already has %s", roleName(s.State, irole), userToString(m.Author), roleName(s.State, irole))
-                        return
-                    }
-                }
-            }
-            log.Printf("Giving Role %s to %s", roleName(s.State, role), userToString(m.Author))
-            s.ChannelMessageSend(dm.ID, "Haaai, Ryoukai desu~")
-            s.GuildMemberRoleAdd(config.ServerID, m.Author.ID, role)
-        }
-    }
+	log.Printf("Received DM from %s with content: “%s”", userToString(m.Author), m.Content)
+	Member, _ := s.GuildMember(config.ServerID, m.Author.ID)
+	dm, _ := s.UserChannelCreate(Member.User.ID)
+	for comm, role := range config.RoleCommands {
+		if m.Content == comm {
+			for _, irole := range config.RoleCommands {
+				for _, mrole := range Member.Roles {
+					if irole == mrole {
+						s.ChannelMessageSend(dm.ID, "Baka, du kannst nur eine der Rollen haben.")
+						log.Printf("Denied Role %s to %s. User already has %s", roleName(s.State, irole), userToString(m.Author), roleName(s.State, irole))
+						return
+					}
+				}
+			}
+			s.ChannelMessageSend(dm.ID, "Haaai, Ryoukai desu~")
+			s.GuildMemberRoleAdd(config.ServerID, m.Author.ID, role)
+			log.Printf("Giving Role %s to %s", roleName(s.State, role), userToString(m.Author))
+		}
+	}
 }
-

helpers.go

@@ -1,52 +1,67 @@
 package main
 
 import (
-    "github.com/bwmarrin/discordgo"
-    "log"
-    "fmt"
+	"fmt"
+	"github.com/bwmarrin/discordgo"
+	"log"
 )
 
 func unlockUser(s *discordgo.Session, id string) {
-    s.GuildMemberRoleRemove(config.ServerID, id, config.LockedRoleID)
-    log.Printf("Removed lock from user: %s", userToString(getUser(s, id)))
+	s.GuildMemberRoleRemove(config.ServerID, id, config.LockedRoleID)
+	log.Printf("Removed lock from user: %s", userToString(getUser(s, id)))
 }
 
 func userToString(u *discordgo.User) string {
-    return fmt.Sprintf("%s#%s (ID: %s)", u.Username, u.Discriminator, u.ID)
+	return fmt.Sprintf("%s#%s (ID: %s)", u.Username, u.Discriminator, u.ID)
 }
 
 func roleName(s *discordgo.State, rid string) string {
-    role, _ := s.Role(config.ServerID, rid)
-    return role.Name
+	role, _ := s.Role(config.ServerID, rid)
+	return role.Name
 }
 
 func channelToString(c *discordgo.Channel) string {
-    return fmt.Sprintf("%s (ID: %s) on %s", c.Name, c.ID, c.GuildID)
+	return fmt.Sprintf("%s (ID: %s) on %s", c.Name, c.ID, c.GuildID)
 }
 
 func messageToString(m *discordgo.Message) string {
-    return fmt.Sprintf("<%s#%s>: %s", m.Author.Username, m.Author.Discriminator, m.Content)
+	return fmt.Sprintf("<%s#%s>: %s", m.Author.Username, m.Author.Discriminator, m.Content)
 }
 
 func getChannel(s *discordgo.State, cid string) *discordgo.Channel {
-    channel, _ := s.Channel(cid)
-    return channel
+	channel, _ := s.Channel(cid)
+	return channel
 }
 
 func getUser(s *discordgo.Session, uid string) *discordgo.User {
-    user, _ := s.User(uid)
-    return user
+	user, _ := s.User(uid)
+	return user
 }
 
 func isDM(s *discordgo.Session, m *discordgo.MessageCreate) bool {
-    return (getChannel(s.State, m.ChannelID).Type == discordgo.ChannelTypeDM)
+	return (getChannel(s.State, m.ChannelID).Type == discordgo.ChannelTypeDM)
+}
+
+func getDMChannelFromMessage(s *discordgo.Session, m *discordgo.MessageCreate) *discordgo.Channel {
+	dm, _ := s.UserChannelCreate(m.Author.ID)
+	return dm
 }
 
 func isAdmin(u *discordgo.User) bool {
-    for _, admin := range config.Admins {
-        if u.ID == admin {
-            return true
-        }
-    }
-    return false
+	for _, admin := range config.Admins {
+		if u.ID == admin {
+			return true
+		}
+	}
+	return false
+}
+
+func getServer() (*discordgo.Guild, error) {
+	server, err := state.Guild(config.ServerID)
+	return server, err
+}
+
+func remove(channels []*discordgo.Channel, position int) []*discordgo.Channel {
+	channels[len(channels)-1], channels[position] = channels[position], channels[len(channels)-1]
+	return channels[:len(channels)-1]
 }

main.go

@@ -1,88 +1,103 @@
 package main
 
 import (
-    "fmt"
-    "os/signal"
-    "os"
-    "syscall"
-    "log"
-    "github.com/bwmarrin/discordgo"
+	"fmt"
+	"github.com/bwmarrin/discordgo"
+	"github.com/deckarep/golang-set"
+	"log"
+	"os"
+	"os/signal"
+	"syscall"
 )
 
 var config = readConfig()
 var commands []*Command
+var state *discordgo.State
 
 func main() {
-    dg, err := discordgo.New("Bot " + config.Token)
-    if err != nil {
-        fmt.Println("error: ", err)
-        return
-    }
-    defer dg.Close()
+	session, err := discordgo.New("Bot " + config.Token)
+	if err != nil {
+		fmt.Println("error: ", err)
+		return
+	}
+	defer session.Close()
 
-    dg.AddHandler(evaluateMessage)
-    dg.AddHandler(onJoin)
-    err = dg.Open()
-    if err != nil {
-        fmt.Println("No connection:\n", err)
-        return
-    }
+	session.AddHandler(evaluateMessage)
+	session.AddHandler(onJoin)
+	err = session.Open()
+	if err != nil {
+		fmt.Println("No connection:\n", err)
+		return
+	}
 
-    f, err := os.OpenFile("selphybot.log", os.O_RDWR | os.O_CREATE | os.O_APPEND, 0666)
-    if err != nil {
-        fmt.Println("Error opening log file:\n", err)
-    }
-    defer f.Close()
-    log.SetOutput(f)
-    dg.UpdateStatus(0, "!help")
-    addCommands()
+	f, err := os.OpenFile("selphybot.log", os.O_RDWR|os.O_CREATE|os.O_APPEND, 0666)
+	if err != nil {
+		fmt.Println("Error opening log file:\n", err)
+	}
+	defer f.Close()
+	log.SetOutput(f)
+	session.UpdateStatus(0, "!help")
+	state = discordgo.NewState()
+	server, err := session.Guild(config.ServerID)
+	if err != nil {
+		fmt.Println("Guild incorrectly configured. Exiting...")
+		return
+	}
+	state.GuildAdd(server)
+	go checkAndDeleteUnusedChannels(session)
+	addCommands()
 
-    fmt.Println("Bot running. selphyWoo")
-    log.Println("Bot running. selphyWoo")
-    sc := make(chan os.Signal, 1)
-    signal.Notify(sc, syscall.SIGINT, syscall.SIGTERM, os.Interrupt, os.Kill)
-    <-sc
+	fmt.Println("Bot running. selphyWoo")
+	log.Println("Bot running. selphyWoo")
+	sc := make(chan os.Signal, 1)
+	signal.Notify(sc, syscall.SIGINT, syscall.SIGTERM, os.Interrupt, os.Kill)
+	<-sc
 
-    fmt.Println("Exiting...")
-    log.Println("Exiting...")
+	for _, channel := range tempChannels {
+		session.ChannelDelete(channel.ID)
+	}
+	fmt.Println("Exiting...")
+	log.Println("Exiting...")
 }
 
 // I’ll just put all of the commands here for now.
 func addCommands() {
-    // Moderation
-    registerCommand(Command{Trigger: "^[^`]*([()|DoOvVcC][-=^']?;|;[-=^']?[()|DoOpPvVcC]|:wink:|😉)[^`]*$", Output: "<@%s> Oboe!", DeleteInput: true, OutputIsReply: true, Type: CommandTypeRegex})
-    registerCommand(Command{Trigger: "(\\s|\n|^)[nN][hH]([ ?.,\n]|$)", Output: "<@%s> „nh“ ist kein Wort, du Oboe!", DeleteInput: true, OutputIsReply: true, Type: CommandTypeRegex})
-    registerCommand(Command{Trigger: "einzigste", Output: "<@%s> Es heißt „einzige“, du Tuba.", DeleteInput: true, OutputIsReply: true, Type: CommandTypeContains})
-    registerCommand(Command{Trigger: "!complain", Type: CommandTypePrefix, DMOnly: true, Function: redirectComplaint})
-    registerCommand(Command{Trigger: "!scomplain", Type: CommandTypePrefix, DMOnly: true, Function: redirectComplaintToDM})
-    registerCommand(Command{Trigger: "!beschwerde", Type: CommandTypePrefix, DMOnly: true, Function: redirectComplaint})
+	// Moderation
+	registerCommand(Command{Trigger: "^[^`]*([()|DoOvVcC][-=^']?;|;[-=^']?[()|DoOpPvVcC3]|:wink:|😉)[^`]*$", Output: "<@%s> Oboe!", DeleteInput: true, OutputIsReply: true, Type: CommandTypeRegex})
+	registerCommand(Command{Trigger: "(\\s|\n|^)[nN][hH]([ ?.,\n]|$)", Output: "<@%s> „nh“ ist kein Wort, du Oboe!", DeleteInput: true, OutputIsReply: true, Type: CommandTypeRegex})
+	registerCommand(Command{Trigger: "einzigste", Output: "<@%s> Es heißt „einzige“, du Tuba.", DeleteInput: true, OutputIsReply: true, Type: CommandTypeContains})
+	registerCommand(Command{Trigger: "!complain", Type: CommandTypePrefix, DMOnly: true, Function: modComplain})
+	registerCommand(Command{Trigger: "!scomplain", Type: CommandTypePrefix, DMOnly: true, Function: selphyComplain})
+	registerCommand(Command{Trigger: "!beschwerde", Type: CommandTypePrefix, DMOnly: true, Function: modComplain})
 
-    for comm, _ := range config.RoleCommands {
-        registerCommand(Command{Trigger: comm, Type: CommandTypeFullMatch, DMOnly: true, Function: giveAgeRole})
-    }
+	for comm, _ := range config.RoleCommands {
+		registerCommand(Command{Trigger: comm, Type: CommandTypeFullMatch, DMOnly: true, Function: giveAgeRole})
+	}
 
-    // Misc commands
-    registerCommand(Command{Trigger: "o/", Output: "\\o", Type: CommandTypeFullMatch, Cooldown: 10})
-    registerCommand(Command{Trigger: "\\o", Output: "o/", Type: CommandTypeFullMatch, Cooldown: 10})
-    registerCommand(Command{Trigger: "\\o/", Output: "/o\\", Type: CommandTypeFullMatch, Cooldown: 10})
-    registerCommand(Command{Trigger: "/o\\", Output: "\\o/", Type: CommandTypeFullMatch, Cooldown: 10})
-    registerCommand(Command{Trigger: "!heil", Output: "(ﾉ･ｪ･)ﾉ Selphy (ﾉ･ｪ･)ﾉ", Type: CommandTypeFullMatch, Cooldown: 30})
-    registerCommand(Command{Trigger: "ayy", Output: "lmao", Type: CommandTypeFullMatch, Cooldown: 0})
-    registerCommand(Command{Trigger: "<:selphyDango:441001954542616576>", Output: "<:dango:430669469799677953> :notes: Dango Daikazoku :notes: <:dango:430669469799677953>", Type: CommandTypeFullMatch, Cooldown: 10800})
-    registerCommand(Command{Trigger: "praise the sun", Output: "If only I could be so grossly incandescent \\\\[T]/", Type: CommandTypeContains, IgnoreCase: true, Cooldown: 85600})
+	// Fluff
+	registerCommand(Command{Trigger: "o/", Output: "\\o", Type: CommandTypeFullMatch, Cooldown: 10})
+	registerCommand(Command{Trigger: "\\o", Output: "o/", Type: CommandTypeFullMatch, Cooldown: 10})
+	registerCommand(Command{Trigger: "\\o/", Output: "/o\\", Type: CommandTypeFullMatch, Cooldown: 10})
+	registerCommand(Command{Trigger: "/o\\", Output: "\\o/", Type: CommandTypeFullMatch, Cooldown: 10})
+	registerCommand(Command{Trigger: "!heil", Output: "(ﾉ･ｪ･)ﾉ Selphy (ﾉ･ｪ･)ﾉ", Type: CommandTypeFullMatch, Cooldown: 30})
+	registerCommand(Command{Trigger: "ayy", Output: "lmao", Type: CommandTypeFullMatch, Cooldown: 0})
+	registerCommand(Command{Trigger: "<:selphyDango:531594585424527370>", Output: "<:dango:430669469799677953> :notes: Dango Daikazoku :notes: <:dango:430669469799677953>", Type: CommandTypeFullMatch, Cooldown: 10800})
+	registerCommand(Command{Trigger: "praise the sun", Output: "If only I could be so grossly incandescent \\\\[T]/", Type: CommandTypeContains, IgnoreCase: true, Cooldown: 85600})
 
-    // Information
-    registerCommand(Command{Trigger: "!welcome", OutputEmbed: getWelcomeEmbed(), Type: CommandTypeFullMatch, DMOnly: true})
-    registerCommand(Command{Trigger: "!mods", Output: "Bei Fragen, Problemen und Beschwerden wende dich bitte an die Moderatoren oder schick mir eine Nachricht beginnend mit !complain, um dich anonym zu beschweren.\nAktuell anwesende Mods werden dir rechts mit dem Rang „Maid“ angezeigt.", Type: CommandTypeFullMatch})
+	// Information
+	registerCommand(Command{Trigger: "!welcome", OutputEmbed: getWelcomeEmbed(), Type: CommandTypeFullMatch, DMOnly: true})
+	registerCommand(Command{Trigger: "!mods", Output: "Bei Fragen, Problemen und Beschwerden wende dich bitte an die Moderatoren oder schick mir eine Nachricht beginnend mit !complain, um dich anonym zu beschweren.\nAktuell anwesende Mods werden dir rechts mit dem Rang „Maid“ angezeigt.", Type: CommandTypeFullMatch})
 
-    // Admin and/or debug
-    registerCommand(Command{Trigger: "<@%s> <3", Output: "<@%s> <3", Type: CommandTypeFullMatch, AdminOnly: true, OutputIsReply: true, RequiresMention: true})
-    registerCommand(Command{Trigger: "echo", Type: CommandTypePrefix, Function: echoMessage, AdminOnly: true})
+	// Features :Pog:
+	registerCommand(Command{Trigger: "!vc ", Type: CommandTypePrefix, Function: parseVoiceChannelCommand, AllowedChannels: mapset.NewSetWith("525852491976278016")})
 
-    // This needs to be the last command because getHelpEmbed is evaluated here once, not on every function call. Putting it too early will result in missing commands in the output.
-    registerCommand(Command{Trigger: "!help", OutputEmbed: getHelpEmbed(), Type: CommandTypeFullMatch})
+	// Admin and/or debug
+	registerCommand(Command{Trigger: "<@%s> <3", Output: "<@%s> <3", Type: CommandTypeFullMatch, AdminOnly: true, OutputIsReply: true, RequiresMention: true})
+	registerCommand(Command{Trigger: "echo", Type: CommandTypePrefix, Function: echoMessage, AdminOnly: true})
 
-    fmt.Printf("Successfully initialized %d commands\n", len(commands))
-    log.Printf("Successfully initialized %d commands", len(commands))
-}
+	// This needs to be the last command because getHelpEmbed is evaluated here once, not on every function call. Putting it too early will result in missing commands in the output.
+	registerCommand(Command{Trigger: "!help", OutputEmbed: getHelpEmbed(), Type: CommandTypeFullMatch})
 
+	fmt.Printf("Successfully initialized %d commands\n", len(commands))
+	log.Printf("Successfully initialized %d commands", len(commands))
+}

voicechannel.go

@@ -0,0 +1,74 @@
+package main
+
+import (
+	"fmt"
+	"github.com/bwmarrin/discordgo"
+	"log"
+	"strconv"
+	"strings"
+	"time"
+)
+
+var tempChannels []*discordgo.Channel
+
+func parseVoiceChannelCommand(session *discordgo.Session, message *discordgo.MessageCreate) {
+	userLimit, err := strconv.Atoi(strings.Split(message.Content, " ")[1])
+	if err != nil {
+		session.ChannelMessageSend(message.ChannelID, "Error: Expected a number after !vc")
+		log.Printf("Incorrect syntax for !vc, “%s” triggered by %s", message.Content, userToString(message.Author))
+		return
+	}
+	if userLimit > 99 {
+		session.ChannelMessageSend(message.ChannelID, fmt.Sprintf("Als ob %d Leute *mit dir* in einen Channel wollen.", userLimit-1))
+		log.Printf("%s tried to create a channel with %d slots", userToString(message.Author), userLimit)
+		return
+	}
+	createData := discordgo.GuildChannelCreateData{
+		Name:      fmt.Sprintf("%s’s Volatile Corner", message.Author.Username),
+		Type:      discordgo.ChannelTypeGuildVoice,
+		UserLimit: userLimit,
+		ParentID:  "410162599762853909",
+	}
+	channel, err := session.GuildChannelCreateComplex(message.GuildID, createData)
+	if err != nil {
+		session.ChannelMessageSend(message.ChannelID, "Couldn’t create the voice channel. Please bug kageru about this.")
+		log.Printf("Failed to create voice channel, %s", err)
+		return
+	}
+	tempChannels = append(tempChannels, channel)
+	err = session.GuildMemberMove(config.ServerID, message.Author.ID, channel.ID)
+	if err != nil {
+		log.Printf("Couldn’t move user %s: %s", userToString(message.Author), err)
+	}
+	session.ChannelMessageSend(message.ChannelID, "haaaai~")
+	log.Printf("Created channel %s", channel.ID)
+}
+
+func checkAndDeleteUnusedChannels(session *discordgo.Session) {
+	for true {
+		time.Sleep(30 * time.Second)
+		server, err := getServer()
+		if err == nil {
+			for i, channel := range tempChannels {
+				if channelIsEmpty(channel.ID, server.VoiceStates) {
+					session.ChannelDelete(channel.ID)
+					tempChannels = remove(tempChannels, i)
+					log.Printf("Deleted channel %s", channel.ID)
+					log.Printf("Tempchannels: %d", len(tempChannels))
+					break
+				}
+			}
+		} else {
+			log.Printf("Could not retrieve voice state from API, %s", err)
+		}
+	}
+}
+
+func channelIsEmpty(channelID string, voiceStates []*discordgo.VoiceState) bool {
+	for _, state := range voiceStates {
+		if channelID == state.ChannelID {
+			return false
+		}
+	}
+	return true
+}

welcome.go

@@ -1,29 +1,29 @@
 package main
 
 import (
-    "github.com/bwmarrin/discordgo"
-    "fmt"
+	"fmt"
+	"github.com/bwmarrin/discordgo"
 )
 
 func getWelcomeEmbed() *discordgo.MessageEmbed {
-    return &discordgo.MessageEmbed {
-        Author:      &discordgo.MessageEmbedAuthor{},
-        Color:       0xffb90f,
-        Description: config.WelcomeEmbed.Message,
-        Fields: []*discordgo.MessageEmbedField {
-            &discordgo.MessageEmbedField {
-                Name:   config.WelcomeEmbed.QuestionsTitle,
-                Value:  config.WelcomeEmbed.QuestionsText,
-                Inline: true,
-            },
-            &discordgo.MessageEmbedField {
-                Name:   config.WelcomeEmbed.BugsTitle,
-                Value:  fmt.Sprintf(config.WelcomeEmbed.BugsText, config.Admins[0]),
-                Inline: true,
-            },
-        },
-        Thumbnail: &discordgo.MessageEmbedThumbnail{
-            URL: config.WelcomeEmbed.Image,
-        },
-    }
+	return &discordgo.MessageEmbed{
+		Author:      &discordgo.MessageEmbedAuthor{},
+		Color:       0xffb90f,
+		Description: config.WelcomeEmbed.Message,
+		Fields: []*discordgo.MessageEmbedField{
+			&discordgo.MessageEmbedField{
+				Name:   config.WelcomeEmbed.QuestionsTitle,
+				Value:  config.WelcomeEmbed.QuestionsText,
+				Inline: true,
+			},
+			&discordgo.MessageEmbedField{
+				Name:   config.WelcomeEmbed.BugsTitle,
+				Value:  fmt.Sprintf(config.WelcomeEmbed.BugsText, config.Admins[0]),
+				Inline: true,
+			},
+		},
+		Thumbnail: &discordgo.MessageEmbedThumbnail{
+			URL: config.WelcomeEmbed.Image,
+		},
+	}
 }