package campaignuser

import (
	"joybuywork/internal/app"
	"joybuywork/internal/consts/ckey"
	"joybuywork/internal/repository/cache"
	"joybuywork/internal/repository/dbcheck"
	"joybuywork/internal/repository/finder"
	"joybuywork/internal/repository/model"
	"joybuywork/internal/repository/mtype"
	"joybuywork/internal/repository/withdefault"
	"joybuywork/internal/service/provider"
	"joybuywork/internal/utils/lockdo"
	"joybuywork/internal/utils/logic"
	"joybuywork/internal/utils/timez"
	pb "joybuywork/proto/go_proto/w_campaign_user"
	"joybuywork/proto/go_proto/workerr"
	"fmt"

	chatpb "gits.branchcn.com/backend/deepai/proto/go_proto/ai_chat"
)

const (
	chatOk         = iota // 正常
	chatTokenLimit        // token 不足
	chatDayLimit          // 每日上限
)

type Chat struct {
	logic.Logic
	Req *pb.ChatReq
	Res *pb.ChatRes

	tz *provider.CampaignTZ

	chatOk bool

	lastMsg *model.FissionChatMsg
}

func (s *Chat) Run() error {
	return logic.Run(s)
}

func (s *Chat) Exec() (err error) {
	cpn, user, err := s.user()
	if err != nil {
		return
	}

	chat, err := s.chat(user)
	if err != nil {
		return
	}

	err = s.msg(user, cpn, chat)
	if err != nil {
		return
	}

	return
}

func (s *Chat) user() (cpn *model.FissionCampaign, user *model.FissionUser, err error) {
	cpn, err = finder.Campaign(s.Ctx, s.Req.GetCampaignId())
	if err != nil {
		err = s.BE().CacheError(err)
		return
	}

	if cpn == nil || cpn.IsDel == mtype.Yes {
		err = workerr.NotFound("not found cpn")
		return
	}

	user, err = finder.FissionUser(s.Ctx, cpn.ID, s.Req.GetUserId())
	if err != nil {
		err = s.BE().CacheError(err)
		return
	}

	s.tz = provider.NewCampaignTZ(s.Ctx, cpn, user.LangMark)

	return
}

func (s *Chat) chat(user *model.FissionUser) (chat *model.FissionChat, err error) {
	chat, err = cache.NewFissionChat(s.Ctx).FindByUniq(user.CampaignID, user.ID)
	if err != nil {
		err = s.BE().CacheError(err)
		return
	}

	return
}

func (s *Chat) msg(user *model.FissionUser, cpn *model.FissionCampaign, chat *model.FissionChat) (err error) {
	status, output, err := s._status(user, cpn, chat)
	if err != nil {
		return
	}

	var inputMsg = withdefault.FissionChatMsg(&model.FissionChatMsg{
		CampaignID: cpn.ID,
		UserID:     user.ID,
		ChatID:     chat.ID,
		Source:     mtype.FissionChatMsgSourceInput,
		MsgType:    mtype.FissionChatMsgTypeText,
	}, mtype.ChatMsgVal{
		Text: s.Req.GetInput(),
	})

	var content string
	var msgType int8
	var source string
	switch status {
	case chatOk:

		content = output
		source = mtype.FissionChatMsgSourceOutput
		msgType = mtype.FissionChatMsgTypeText
	case chatTokenLimit:

		content = "chat:token_limit"
		source = mtype.FissionChatMsgSourceOutput
		msgType = mtype.FissionChatMsgTypeFix
	case chatDayLimit:

		content = "chat:day_limit"
		source = mtype.FissionChatMsgSourceOutput
		msgType = mtype.FissionChatMsgTypeFix
	}

	var outputMsg = withdefault.FissionChatMsg(&model.FissionChatMsg{
		CampaignID: cpn.ID,
		UserID:     user.ID,
		ChatID:     chat.ID,
		Source:     source,
		MsgType:    msgType,
	}, mtype.ChatMsgVal{
		Text: content,
	})

	m := s.GetDao().FissionChatMsg
	if err = m.WithContext(s.Ctx).Create(inputMsg, outputMsg); err != nil {
		err = s.BE().MysqlError(err)
		return
	}

	s.chatOk = true
	s.Res.Status = status
	s.Res.Source = source
	s.Res.MsgType = int32(msgType)
	s.Res.Content = content
	s.Res.MsgId = outputMsg.ID

	return
}

func (s *Chat) _status(user *model.FissionUser, cpn *model.FissionCampaign, chat *model.FissionChat) (status int32, output string, err error) {
	limit, err := s._beLimit(user, cpn)
	if err != nil {
		return
	}

	if limit {
		status = chatDayLimit
		return
	}

	m := s.GetDao().FissionChatMsg
	last, err := m.WithContext(s.Ctx).Where(
		m.ChatID.Eq(chat.ID),
		m.Source.Eq(mtype.FissionChatMsgSourceOutput),
		m.MsgType.Eq(mtype.FissionChatMsgTypeText),
	).Last()
	if err = dbcheck.DbError(err); err != nil {
		err = s.BE().MysqlError(err)
		return
	}

	var assistant string
	if last != nil {
		val := last.GetVal()
		assistant = val.Text
	}

	msg, err := app.NewDeepAiChat().Npc(s.Ctx, &chatpb.NpcReq{
		ProjectId:  cpn.ProjectID,
		SourceType: 1,
		SourceId:   cpn.ID,
		Assistant:  assistant,
		Character:  fmt.Sprintf("%s，用%s回复，只回答与谈心相关的问题，可以提供一点建议，回复会带点情绪反馈，回复语句尽量在255个字符以内", chat.Character, mtype.LangChineseTitle[user.LangMark]),
		Input:      s.Req.GetInput(),
		UserId:     user.SubUserID,
	})

	if err != nil {
		return
	}

	if msg.Status == 1 {
		status = chatTokenLimit
		return
	}

	output = msg.Output

	return
}

func (s *Chat) _beLimit(user *model.FissionUser, cpn *model.FissionCampaign) (yes bool, err error) {
	conf, err := cache.NewCampaignChat(s.Ctx).FindByCampaignId(cpn.ID)
	if err != nil {
		err = s.BE().CacheError(err)
		return
	}

	if conf.DayLimit == 0 {
		return
	}

	day, start, end := timez.GMTStartAndEndTs(s.tz.GetTz())
	dayKey := ckey.FissionChatDayTotal(user.ID, day)
	dayNum, err := lockdo.Int64(s.Ctx, dayKey, func() (num int64, err error) {
		m := s.GetDao().FissionChatMsg
		return m.WithContext(s.Ctx).Where(m.UserID.Eq(user.ID), m.CreatedAt.Between(start, end)).Count()
	})

	if err != nil {
		err = s.BE().CacheError(err)
		return
	}

	if dayNum >= int64(conf.DayLimit) {
		return true, nil
	}

	s.AddAfterRun(func() (err error) {
		if !s.chatOk {
			return
		}

		return app.Redis.Cache.Incr(s.Ctx, dayKey).Err()
	})

	return
}