/
discord.go
169 lines (148 loc) · 5.32 KB
/
discord.go
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package discord
import (
"fmt"
"sync"
"time"
"github.com/bwmarrin/discordgo"
"github.com/npmaile/focusbot/internal/db"
"github.com/npmaile/focusbot/internal/guild"
"github.com/npmaile/focusbot/internal/models"
"github.com/npmaile/focusbot/pkg/logerooni"
)
func init(){
discordgo.Logger = logerooni.DiscordLogger
}
func InitializeDG(servers []*guild.Guild, token string, db db.DataStore) (*models.GlobalConfig, error) {
logerooni.Debug("InitializeDG called")
dg, err := discordgo.New("Bot " + token)
if err != nil {
logerooni.Errorf("unable to initialize a new discordgo client: " + err.Error())
}
dg.Debug = true
dg.SyncEvents = false
dg.LogLevel = discordgo.LogInformational
dg.ShouldReconnectOnError = true
dg.ShouldRetryOnRateLimit = true
dg.StateEnabled = true
dg.State.TrackChannels = true
dg.State.TrackMembers = true
dg.State.TrackRoles = true
dg.State.TrackVoice = true
dg.State.TrackPresences = true
// todo: get only the necessary intents
dg.Identify.Intents = discordgo.IntentsAll
readychan := make(chan *discordgo.Ready)
dg.AddHandler(ReadyHandlerFunc(readychan))
mg := mtexGuilds{
g: map[string]*guild.Guild{},
mtex: sync.Mutex{},
}
for _, s := range servers {
mg.g[s.Config.ID] = s
}
dg.AddHandler(GuildCreateHandlerFunc(&mg, db))
dg.AddHandler(GuildMembersChunkFunc(&mg))
dg.AddHandler(GuildVoiceStateUpdateHandlerFunc(&mg))
logerooni.Debug("Opening discordgo websocket connection")
err = dg.Open()
if err != nil {
return nil, fmt.Errorf("unable to open websocket to discord: %s", err.Error())
}
var ready *discordgo.Ready
logerooni.Debug("waiting for ready signal from discord websocket connection")
select {
case ready = <-readychan:
break
case <-time.After(10 * time.Second):
return nil, fmt.Errorf("unable to receive discord ready signal after 10 seconds")
}
return &models.GlobalConfig{
Ready: ready,
DG: dg,
}, nil
}
// called once at the beginning
func ReadyHandlerFunc(readychan chan *discordgo.Ready) func(_ *discordgo.Session, r *discordgo.Ready) {
return func(_ *discordgo.Session, r *discordgo.Ready) {
logerooni.Debug("Received Ready! event from discord websocket api")
readychan <- r
}
}
// called at the beginning for each guild connected
func GuildCreateHandlerFunc(mg *mtexGuilds, db db.DataStore) func(_ *discordgo.Session, gc *discordgo.GuildCreate) {
return func(dg *discordgo.Session, gc *discordgo.GuildCreate) {
logerooni.Debugf("GuildCreateHandler Event fired for guild %s", gc.ID)
server, ok := mg.lookupguild("GuildCreateHandlerFunc", gc.ID)
if !ok {
var err error
server, err = AdHocSetUpGuild(mg, db, gc.ID, dg)
if err != nil {
logerooni.Errorf("unable to route VoiceStateUpdate to guild process %s, guildID not in process store", gc.ID)
return
}
}
server.GuildChan <- gc
logerooni.Debugf("Routed GuildCreate to guild process %s", gc.ID)
}
}
func AdHocSetUpGuild(mg *mtexGuilds, db db.DataStore, ID string, dg *discordgo.Session) (*guild.Guild, error) {
logerooni.Infof("AdHocSetUpGuild called for guildID: %s", ID)
guildConfig, err := db.GetServerConfiguration(ID)
if err == nil {
return guild.NewFromConfig(&guildConfig), nil
}
guildConfig = models.DefaultGuildConfig(ID)
err = db.AddServer(guildConfig)
if err != nil {
return nil, fmt.Errorf("unable to store new guild %s", ID)
}
server := guild.NewFromConfig(&guildConfig)
mg.addGuild(server)
go server.SetOffServerProcessing(dg)
return server, nil
}
// 1. add the new guild to the database
// 2. start processing the guild
// called when asked for and necessary for getting membership information
func GuildMembersChunkFunc(mg *mtexGuilds) func(_ *discordgo.Session, gm *discordgo.GuildMembersChunk) {
return func(_ *discordgo.Session, gm *discordgo.GuildMembersChunk) {
logerooni.Debugf("GuildMembersChunck Event fired for guild %s", gm.GuildID)
server, ok := mg.lookupguild("GuildMembersChunkFunc", gm.GuildID)
if !ok {
logerooni.Errorf("unable to route GuildMembersChunk to guild process %s, guildID not in process store", gm.GuildID)
return
}
server.Members.MembersChan <- gm
logerooni.Debugf("Routed GuildMembersChunk to guild process %s", gm.GuildID)
}
}
func GuildVoiceStateUpdateHandlerFunc(mg *mtexGuilds) func(_ *discordgo.Session, vs *discordgo.VoiceStateUpdate) {
return func(_ *discordgo.Session, vs *discordgo.VoiceStateUpdate) {
logerooni.Debugf("GuildVoiceStateUpate Event fired for guild %s", vs.GuildID)
g, ok := mg.lookupguild("GuildVoiceStateUpdateHandlerFunc", vs.GuildID)
if !ok {
logerooni.Errorf("unable to route VoiceStateUpdate to guild process %s, guildID not in process store", vs.GuildID)
return
}
g.VoiceStateUpdate <- vs
logerooni.Debugf("Routed VoiceStateUpdate to guild process %s", vs.GuildID)
}
}
//todo: add a handler to handle channel creation that routes to the proper guildprocessing process to get rid of the time.wait
type mtexGuilds struct {
g map[string]*guild.Guild
mtex sync.Mutex
}
func (m *mtexGuilds) lookupguild(caller string, s string) (*guild.Guild, bool) {
logerooni.Debugf("[lookupguild(%s)] %s requested lookup.. locking", caller, caller)
m.mtex.Lock()
g, ok := m.g[s]
logerooni.Debugf("[lookupguild(%s)] Got guildid value %v, ok: %v", caller, g, ok)
m.mtex.Unlock()
return g, ok
}
func (m *mtexGuilds) addGuild(guild *guild.Guild) {
m.mtex.Lock()
m.g[guild.Config.ID] = guild
m.mtex.Unlock()
}