feat: meeting rooms

internal/bot/bot.go

@@ -24,6 +24,12 @@ func NewBot(token, appID, guildID string, cmds []*discordgo.ApplicationCommand,
 		return nil, err
 	}
 
+	// Intents needed for:
+	// - InteractionCreate (slash commands): Guilds
+	// - MessageCreate (leveling): GuildMessages
+	// - VoiceStateUpdate (meeting lobby): GuildVoiceStates
+	session.Identify.Intents = discordgo.IntentsGuilds | discordgo.IntentsGuildMessages | discordgo.IntentsGuildVoiceStates
+
 	return &Bot{
 		Session:  session,
 		AppID:    appID,
@@ -54,6 +60,10 @@ func (b *Bot) Start() error {
 		events.HandleMessageCreate(s, m, b.Services)
 	})
 
+	b.Session.AddHandler(func(s *discordgo.Session, vs *discordgo.VoiceStateUpdate) {
+		events.HandleVoiceStateUpdate(s, vs, b.Services)
+	})
+
 	return nil
 }
 

internal/commands/commands.go

@@ -4,6 +4,7 @@ import (
 	"velox-bot/internal/commands/fun"
 	"velox-bot/internal/commands/help"
 	cmdlevel "velox-bot/internal/commands/level"
+	"velox-bot/internal/commands/meeting"
 
 	"github.com/bwmarrin/discordgo"
 )
@@ -21,6 +22,7 @@ var AllCommands = []*discordgo.ApplicationCommand{
 	cmdlevel.Rank,
 	cmdlevel.Leaderboard,
 	cmdlevel.Rewards,
+	meeting.Meeting,
 }
 
 var handlers = map[string]func(s *discordgo.Session, i *discordgo.InteractionCreate){
@@ -36,6 +38,7 @@ var handlers = map[string]func(s *discordgo.Session, i *discordgo.InteractionCre
 	"rank":        cmdlevel.RankHandler,
 	"leaderboard": cmdlevel.LeaderboardHandler,
 	"rewards":     cmdlevel.RewardsHandler,
+	"meeting":     meeting.MeetingHandler,
 }
 
 func HandleInteraction(s *discordgo.Session, i *discordgo.InteractionCreate) {

internal/commands/meeting/public/meeting.go

@@ -0,0 +1,85 @@
+package public
+
+import (
+	"context"
+	"strconv"
+
+	"velox-bot/internal/commands/meeting/shared"
+	"velox-bot/internal/db/services"
+
+	"github.com/bwmarrin/discordgo"
+)
+
+var Meeting = &discordgo.ApplicationCommand{
+	Name:        "meeting",
+	Description: "Meeting room settings",
+	Options: []*discordgo.ApplicationCommandOption{
+		{
+			Type:        discordgo.ApplicationCommandOptionSubCommand,
+			Name:        "set-lobby",
+			Description: "Set the voice lobby channel used to create meetings",
+			Options: []*discordgo.ApplicationCommandOption{
+				{
+					Type:         discordgo.ApplicationCommandOptionChannel,
+					Name:         "channel",
+					Description:  "Voice channel lobby",
+					Required:     true,
+					ChannelTypes: []discordgo.ChannelType{discordgo.ChannelTypeGuildVoice},
+				},
+			},
+		},
+	},
+}
+
+func MeetingHandler(s *discordgo.Session, i *discordgo.InteractionCreate) {
+	if !shared.RequireGuild(s, i) || !shared.RequireManageGuild(s, i) || !shared.RequireMeetingService(s, i) {
+		return
+	}
+
+	data := i.ApplicationCommandData()
+	if len(data.Options) == 0 {
+		shared.RespondEphemeral(s, i, "Missing subcommand.")
+		return
+	}
+
+	switch data.Options[0].Name {
+	case "set-lobby":
+		handleSetLobby(s, i)
+	default:
+		shared.RespondEphemeral(s, i, "Unknown subcommand.")
+	}
+}
+
+func handleSetLobby(s *discordgo.Session, i *discordgo.InteractionCreate) {
+	guildID, ok := shared.ParseGuildID(s, i)
+	if !ok {
+		return
+	}
+
+	optMap := shared.SubcommandOptionMap(i)
+	channelOpt, ok := optMap["channel"]
+	if !ok {
+		shared.RespondEphemeral(s, i, "Missing channel option.")
+		return
+	}
+
+	ch := channelOpt.ChannelValue(s)
+	if ch == nil || ch.Type != discordgo.ChannelTypeGuildVoice {
+		shared.RespondEphemeral(s, i, "Invalid voice channel.")
+		return
+	}
+
+	channelID, err := strconv.ParseInt(ch.ID, 10, 64)
+	if err != nil {
+		shared.RespondEphemeral(s, i, "Invalid channel ID.")
+		return
+	}
+
+	if err := services.Global.Meeting.SetLobbyChannel(context.Background(), guildID, channelID); err != nil {
+		shared.RespondEphemeral(s, i, "Failed to set meeting lobby.")
+		return
+	}
+
+	shared.RespondEphemeral(s, i, "Meeting lobby set to "+ch.Mention()+".")
+}
+

internal/commands/meeting/registry.go

@@ -0,0 +1,14 @@
+package meeting
+
+import (
+	"velox-bot/internal/commands/meeting/public"
+
+	"github.com/bwmarrin/discordgo"
+)
+
+var (
+	Meeting *discordgo.ApplicationCommand = public.Meeting
+)
+
+func MeetingHandler(s *discordgo.Session, i *discordgo.InteractionCreate) { public.MeetingHandler(s, i) }
+

internal/commands/meeting/shared/shared.go

@@ -0,0 +1,66 @@
+package shared
+
+import (
+	"strconv"
+
+	"velox-bot/internal/db/services"
+
+	"github.com/bwmarrin/discordgo"
+)
+
+func RespondEphemeral(s *discordgo.Session, i *discordgo.InteractionCreate, msg string) {
+	_ = s.InteractionRespond(i.Interaction, &discordgo.InteractionResponse{
+		Type: discordgo.InteractionResponseChannelMessageWithSource,
+		Data: &discordgo.InteractionResponseData{
+			Content: msg,
+			Flags:   discordgo.MessageFlagsEphemeral,
+		},
+	})
+}
+
+func RequireGuild(s *discordgo.Session, i *discordgo.InteractionCreate) bool {
+	if i.GuildID == "" {
+		RespondEphemeral(s, i, "This command can only be used in a server.")
+		return false
+	}
+	return true
+}
+
+func RequireManageGuild(s *discordgo.Session, i *discordgo.InteractionCreate) bool {
+	if i.Member == nil || (i.Member.Permissions&discordgo.PermissionManageGuild) == 0 {
+		RespondEphemeral(s, i, "You don't have permission to manage meeting settings.")
+		return false
+	}
+	return true
+}
+
+func RequireMeetingService(s *discordgo.Session, i *discordgo.InteractionCreate) bool {
+	if services.Global == nil || services.Global.Meeting == nil {
+		RespondEphemeral(s, i, "Meeting service is not available.")
+		return false
+	}
+	return true
+}
+
+func ParseGuildID(s *discordgo.Session, i *discordgo.InteractionCreate) (int64, bool) {
+	guildID, err := strconv.ParseInt(i.GuildID, 10, 64)
+	if err != nil {
+		RespondEphemeral(s, i, "Invalid guild ID.")
+		return 0, false
+	}
+	return guildID, true
+}
+
+func SubcommandOptionMap(i *discordgo.InteractionCreate) map[string]*discordgo.ApplicationCommandInteractionDataOption {
+	data := i.ApplicationCommandData()
+	if len(data.Options) == 0 {
+		return map[string]*discordgo.ApplicationCommandInteractionDataOption{}
+	}
+	opts := data.Options[0].Options
+	m := make(map[string]*discordgo.ApplicationCommandInteractionDataOption, len(opts))
+	for _, opt := range opts {
+		m[opt.Name] = opt
+	}
+	return m
+}
+

internal/db/repos/settingsrepo/repo.go

@@ -19,6 +19,75 @@ func NewRepo(db *sql.DB) *Repo {
 	return &Repo{db: db}
 }
 
+func (r *Repo) SetMeetingLobbyChannel(ctx context.Context, guildID int64, lobbyChannelID int64) error {
+	const q = `
+		INSERT INTO meeting_settings (guild_id, lobby_channel_id)
+		VALUES ($1, $2)
+		ON CONFLICT (guild_id)
+		DO UPDATE SET lobby_channel_id = EXCLUDED.lobby_channel_id
+	`
+	_, err := r.db.ExecContext(ctx, q, guildID, lobbyChannelID)
+	return err
+}
+
+func (r *Repo) GetMeetingLobbyChannel(ctx context.Context, guildID int64) (channelID int64, ok bool, err error) {
+	const q = `
+		SELECT lobby_channel_id
+		FROM meeting_settings
+		WHERE guild_id = $1
+	`
+	row := r.db.QueryRowContext(ctx, q, guildID)
+	var ch sql.NullInt64
+	switch err := row.Scan(&ch); err {
+	case nil:
+		if !ch.Valid {
+			return 0, false, nil
+		}
+		return ch.Int64, true, nil
+	case sql.ErrNoRows:
+		return 0, false, nil
+	default:
+		return 0, false, err
+	}
+}
+
+func (r *Repo) AddMeetingTempChannel(ctx context.Context, guildID, channelID, createdBy int64) error {
+	const q = `
+		INSERT INTO meeting_temp_channels (guild_id, channel_id, created_by)
+		VALUES ($1, $2, $3)
+		ON CONFLICT (guild_id, channel_id) DO NOTHING
+	`
+	_, err := r.db.ExecContext(ctx, q, guildID, channelID, createdBy)
+	return err
+}
+
+func (r *Repo) RemoveMeetingTempChannel(ctx context.Context, guildID, channelID int64) error {
+	const q = `
+		DELETE FROM meeting_temp_channels
+		WHERE guild_id = $1 AND channel_id = $2
+	`
+	_, err := r.db.ExecContext(ctx, q, guildID, channelID)
+	return err
+}
+
+func (r *Repo) IsMeetingTempChannel(ctx context.Context, guildID, channelID int64) (bool, error) {
+	const q = `
+		SELECT 1
+		FROM meeting_temp_channels
+		WHERE guild_id = $1 AND channel_id = $2
+	`
+	row := r.db.QueryRowContext(ctx, q, guildID, channelID)
+	var one int
+	switch err := row.Scan(&one); err {
+	case nil:
+		return true, nil
+	case sql.ErrNoRows:
+		return false, nil
+	default:
+		return false, err
+	}
+}
+
 func (r *Repo) SetLevelSystemEnabled(ctx context.Context, guildID int64, enabled bool) error {
 	const q = `
 		INSERT INTO levelsettings (guild_id, levelsys)

internal/db/services/meeting/service.go

@@ -0,0 +1,36 @@
+package meeting
+
+import (
+	"context"
+
+	"velox-bot/internal/db/repos/settingsrepo"
+)
+
+type Service struct {
+	settings *settingsrepo.Repo
+}
+
+func New(settings *settingsrepo.Repo) *Service {
+	return &Service{settings: settings}
+}
+
+func (s *Service) SetLobbyChannel(ctx context.Context, guildID int64, lobbyChannelID int64) error {
+	return s.settings.SetMeetingLobbyChannel(ctx, guildID, lobbyChannelID)
+}
+
+func (s *Service) GetLobbyChannel(ctx context.Context, guildID int64) (channelID int64, ok bool, err error) {
+	return s.settings.GetMeetingLobbyChannel(ctx, guildID)
+}
+
+func (s *Service) AddTempChannel(ctx context.Context, guildID, channelID, createdBy int64) error {
+	return s.settings.AddMeetingTempChannel(ctx, guildID, channelID, createdBy)
+}
+
+func (s *Service) RemoveTempChannel(ctx context.Context, guildID, channelID int64) error {
+	return s.settings.RemoveMeetingTempChannel(ctx, guildID, channelID)
+}
+
+func (s *Service) IsTempChannel(ctx context.Context, guildID, channelID int64) (bool, error) {
+	return s.settings.IsMeetingTempChannel(ctx, guildID, channelID)
+}
+

internal/db/services/services.go

@@ -3,21 +3,24 @@ package services
 import (
 	"velox-bot/internal/db/services/level"
 	"velox-bot/internal/db/services/levelsettings"
+	"velox-bot/internal/db/services/meeting"
 	"velox-bot/internal/db/services/rps"
 )
 
 type Services struct {
 	Level         *level.Service
 	LevelSettings *levelsettings.Service
+	Meeting       *meeting.Service
 	RPS           *rps.Service
 }
 
 var Global *Services
 
-func NewServices(level *level.Service, levelSettings *levelsettings.Service, rps *rps.Service) *Services {
+func NewServices(level *level.Service, levelSettings *levelsettings.Service, meeting *meeting.Service, rps *rps.Service) *Services {
 	s := &Services{
 		Level:         level,
 		LevelSettings: levelSettings,
+		Meeting:       meeting,
 		RPS:           rps,
 	}
 	Global = s

internal/events/meeting_voice.go

@@ -0,0 +1,111 @@
+package events
+
+import (
+	"context"
+	"fmt"
+	"log"
+	"strconv"
+	"time"
+
+	"velox-bot/internal/db/services"
+
+	"github.com/bwmarrin/discordgo"
+)
+
+// HandleVoiceStateUpdate implements the "meeting lobby" behavior:
+// - When a user joins the configured lobby voice channel, create a temporary voice channel
+//   with the same UserLimit and move the user into it.
+// - When a temporary channel becomes empty, delete it.
+func HandleVoiceStateUpdate(s *discordgo.Session, vs *discordgo.VoiceStateUpdate, svc *services.Services) {
+	if svc == nil || svc.Meeting == nil {
+		return
+	}
+	if vs == nil || vs.VoiceState == nil {
+		return
+	}
+	if vs.GuildID == "" || vs.UserID == "" {
+		return
+	}
+
+	ctx := context.Background()
+	guildID64, _ := strconv.ParseInt(vs.GuildID, 10, 64)
+
+	// Clean up the channel the user left (if any)
+	if vs.BeforeUpdate != nil && vs.BeforeUpdate.ChannelID != "" {
+		tryCleanupTempChannel(s, ctx, svc, vs.GuildID, guildID64, vs.BeforeUpdate.ChannelID)
+	}
+
+	// If not joining a channel (disconnect), nothing else to do.
+	if vs.ChannelID == "" {
+		return
+	}
+
+	lobbyID, ok, err := svc.Meeting.GetLobbyChannel(ctx, guildID64)
+	if err != nil || !ok || lobbyID == 0 {
+		return
+	}
+	if vs.ChannelID != strconv.FormatInt(lobbyID, 10) {
+		return
+	}
+
+	lobbyCh, err := s.Channel(vs.ChannelID)
+	if err != nil || lobbyCh == nil {
+		return
+	}
+
+	// Create the new channel in the same category as the lobby, with same user limit.
+	newName := fmt.Sprintf("%s • %s", lobbyCh.Name, time.Now().Format("15:04"))
+	newCh, err := s.GuildChannelCreateComplex(vs.GuildID, discordgo.GuildChannelCreateData{
+		Name:      newName,
+		Type:      discordgo.ChannelTypeGuildVoice,
+		ParentID:  lobbyCh.ParentID,
+		UserLimit: lobbyCh.UserLimit,
+		Bitrate:   lobbyCh.Bitrate,
+	})
+	if err != nil || newCh == nil {
+		log.Printf("meeting: failed creating temp channel guild=%s user=%s err=%v", vs.GuildID, vs.UserID, err)
+		return
+	}
+
+	newChID64, _ := strconv.ParseInt(newCh.ID, 10, 64)
+	_ = svc.Meeting.AddTempChannel(ctx, guildID64, newChID64, mustParseInt64(vs.UserID))
+
+	// Move the user into the new channel.
+	targetID := newCh.ID
+	if err := s.GuildMemberMove(vs.GuildID, vs.UserID, &targetID); err != nil {
+		log.Printf("meeting: failed moving member guild=%s user=%s channel=%s err=%v", vs.GuildID, vs.UserID, newCh.ID, err)
+		// If move fails, delete the channel to avoid junk.
+		_, _ = s.ChannelDelete(newCh.ID)
+		_ = svc.Meeting.RemoveTempChannel(ctx, guildID64, newChID64)
+		return
+	}
+}
+
+func tryCleanupTempChannel(s *discordgo.Session, ctx context.Context, svc *services.Services, guildID string, guildID64 int64, channelID string) {
+	chID64, err := strconv.ParseInt(channelID, 10, 64)
+	if err != nil || chID64 == 0 {
+		return
+	}
+	isTemp, err := svc.Meeting.IsTempChannel(ctx, guildID64, chID64)
+	if err != nil || !isTemp {
+		return
+	}
+
+	// Check if anyone is still in the channel.
+	g, err := s.Guild(guildID)
+	if err != nil || g == nil {
+		return
+	}
+	for _, st := range g.VoiceStates {
+		if st != nil && st.ChannelID == channelID {
+			return
+		}
+	}
+
+	if _, err := s.ChannelDelete(channelID); err != nil {
+		// If already deleted, still remove from DB.
+		log.Printf("meeting: failed deleting empty temp channel guild=%s channel=%s err=%v", guildID, channelID, err)
+	}
+	_ = svc.Meeting.RemoveTempChannel(ctx, guildID64, chID64)
+}
+