package mq

import (
	"context"
	"encoding/json"
	"fmt"
	"git.diulo.com/mogfee/protoc-gen-kit/log"
	"git.diulo.com/mogfee/protoc-gen-kit/pkg/xgo"
	"github.com/nsqio/go-nsq"
	"sync"
	"sync/atomic"
)

type nsqLogger struct {
	topic  string
	client *nsq.Producer
	list   chan []byte
	wg     sync.WaitGroup
	stop   atomic.Bool
}

func (s *nsqLogger) Start() error {
	xgo.Go(func() {
		for {
			if s.stop.Load() {
				break
			}
			for v := range s.list {
				fmt.Println(string(v))
				func(v []byte) {
					s.wg.Add(1)
					defer s.wg.Done()
					if err := s.client.Publish(s.topic, v); err != nil {
						fmt.Println(err)
					}
				}(v)
			}
		}
	})
	return nil
}

func (s *nsqLogger) Shutdown(ctx context.Context) error {
	if s.stop.Load() {
		return nil
	}
	s.stop.Store(true)
	s.wg.Wait()
	return nil
}

func (s *nsqLogger) Name() string {
	return "app_log"
}

func NewNsqLogger(host string, topic string) log.Logger {
	client, err := nsq.NewProducer(host, nsq.NewConfig())
	if err != nil {
		panic(err)
	}

	std := &nsqLogger{
		topic:  topic,
		client: client,
		list:   make(chan []byte, 1000),
		wg:     sync.WaitGroup{},
	}
	return std
}

func (l *nsqLogger) Log(level log.Level, keyvals ...any) error {
	if l.stop.Load() {
		fmt.Println("log is stop")
		return nil
	}
	if len(keyvals) == 0 {
		return nil
	}
	if len(keyvals)&1 == 1 {
		keyvals = append(keyvals, "KEYVALS UNPAIRED")
	}
	buf := make(map[any]any)
	buf["status"] = level.String()
	for i := 0; i < len(keyvals); i += 2 {
		buf[keyvals[i]] = keyvals[i+1]
	}
	body, _ := json.Marshal(buf)
	l.list <- body
	return nil
}