193 lines
5.6 KiB
Go
193 lines
5.6 KiB
Go
package bot
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import (
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"fmt"
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"strings"
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"github.com/sashabaranov/go-openai"
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"golang.org/x/exp/slog"
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"maunium.net/go/mautrix"
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"maunium.net/go/mautrix/crypto/cryptohelper"
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"maunium.net/go/mautrix/event"
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"maunium.net/go/mautrix/format"
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"maunium.net/go/mautrix/id"
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)
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type Config struct {
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Homeserver string
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UserID string
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UserAccessKey string
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UserPassword string
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UserDisplayName string
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DBPath string
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Pickle string
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OpenAIKey string
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SystemPrompt string
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}
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type Bot struct {
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config Config
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client *mautrix.Client
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cryptoHelper *cryptohelper.CryptoHelper
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characters []Character
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conversations Conversations
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gptClient *GPT
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logger *slog.Logger
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}
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func New(cfg Config, logger *slog.Logger) *Bot {
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return &Bot{
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config: cfg,
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logger: logger,
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}
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}
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func (m *Bot) Init() error {
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client, err := mautrix.NewClient(m.config.Homeserver, id.UserID(m.config.UserID), m.config.UserAccessKey)
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if err != nil {
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return err
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}
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var oei mautrix.OldEventIgnorer
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oei.Register(client.Syncer.(mautrix.ExtensibleSyncer))
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m.client = client
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m.cryptoHelper, err = cryptohelper.NewCryptoHelper(client, []byte(m.config.Pickle), m.config.DBPath)
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if err != nil {
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return err
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}
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m.cryptoHelper.LoginAs = &mautrix.ReqLogin{
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Type: mautrix.AuthTypePassword,
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Identifier: mautrix.UserIdentifier{Type: mautrix.IdentifierTypeUser, User: m.config.UserID},
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Password: m.config.UserPassword,
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}
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if err := m.cryptoHelper.Init(); err != nil {
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return err
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}
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m.client.Crypto = m.cryptoHelper
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m.gptClient = NewGPT(m.config.OpenAIKey)
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m.conversations = make(Conversations, 0)
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m.AddEventHandler(m.InviteHandler())
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m.AddEventHandler(m.ResponseHandler())
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return nil
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}
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func (m *Bot) Run() error {
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if err := m.client.Sync(); err != nil {
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return err
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}
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return nil
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}
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func (m *Bot) Close() error {
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if err := m.client.Sync(); err != nil {
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return err
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}
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if err := m.cryptoHelper.Close(); err != nil {
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return err
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}
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return nil
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}
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func (m *Bot) AddEventHandler(eventType event.Type, handler mautrix.EventHandler) {
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syncer := m.client.Syncer.(*mautrix.DefaultSyncer)
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syncer.OnEventType(eventType, handler)
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}
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func (m *Bot) InviteHandler() (event.Type, mautrix.EventHandler) {
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return event.StateMember, func(source mautrix.EventSource, evt *event.Event) {
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if evt.GetStateKey() == m.client.UserID.String() && evt.Content.AsMember().Membership == event.MembershipInvite {
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_, err := m.client.JoinRoomByID(evt.RoomID)
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if err != nil {
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m.logger.Error("failed to join room after invite", slog.String("err", err.Error()), slog.String("room_id", evt.RoomID.String()), slog.String("inviter", evt.Sender.String()))
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return
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}
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m.logger.Info("joined room after invite", slog.String("room_id", evt.RoomID.String()), slog.String("inviter", evt.Sender.String()))
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}
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}
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}
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func (m *Bot) ResponseHandler() (event.Type, mautrix.EventHandler) {
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return event.EventMessage, func(source mautrix.EventSource, evt *event.Event) {
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content := evt.Content.AsMessage()
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eventID := evt.ID
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m.logger.Info("received message", slog.String("content", content.Body))
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// ignore if the message is already recorded
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if conv := m.conversations.FindByEventID(eventID); conv != nil {
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m.logger.Info("known message, ignoring", slog.String("event_id", eventID.String()))
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return
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}
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// ignore if the message is sent by the bot itself
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if evt.Sender == id.UserID(m.config.UserID) {
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m.logger.Info("message sent by bot itself, ignoring", slog.String("event_id", eventID.String()))
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return
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}
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var conv *Conversation
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// find out if it is a reply to a known conversation
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parentID := id.EventID("")
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if relatesTo := content.GetRelatesTo(); relatesTo != nil {
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if parentID = relatesTo.GetReplyTo(); parentID != "" {
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m.logger.Info("message is a reply", slog.String("parent_id", parentID.String()))
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if c := m.conversations.FindByEventID(parentID); c != nil {
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m.logger.Info("found parent, appending message to conversation", slog.String("event_id", eventID.String()))
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c.Add(Message{
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EventID: eventID,
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ParentID: parentID,
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Role: openai.ChatMessageRoleUser,
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Content: content.Body,
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})
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conv = c
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}
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}
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}
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// find out if message is a new question addressed to the bot
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m.logger.Info(content.Body)
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if conv == nil && strings.HasPrefix(strings.ToLower(content.Body), strings.ToLower(fmt.Sprintf("%s: ", m.config.UserDisplayName))) {
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m.logger.Info("message is addressed to bot", slog.String("event_id", eventID.String()))
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conv = NewConversation(eventID, m.config.SystemPrompt, content.Body)
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m.conversations = append(m.conversations, conv)
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}
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if conv == nil {
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m.logger.Info("apparently not for us, ignoring", slog.String("event_id", eventID.String()))
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return
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}
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// get reply from GPT
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reply, err := m.gptClient.Complete(conv)
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if err != nil {
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m.logger.Error("failed to get reply from openai", slog.String("err", err.Error()))
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return
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}
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formattedReply := format.RenderMarkdown(reply, true, false)
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formattedReply.RelatesTo = &event.RelatesTo{
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InReplyTo: &event.InReplyTo{
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EventID: eventID,
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},
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}
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res, err := m.client.SendMessageEvent(evt.RoomID, event.EventMessage, &formattedReply)
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if err != nil {
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m.logger.Error("failed to send message", slog.String("err", err.Error()))
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return
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}
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conv.Add(Message{
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EventID: res.EventID,
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ParentID: eventID,
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Role: openai.ChatMessageRoleAssistant,
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Content: reply,
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})
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if len(reply) > 30 {
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reply = reply[:30] + "..."
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}
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m.logger.Info("sent reply", slog.String("parent_id", eventID.String()), slog.String("content", reply))
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}
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}
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