package grpc

import (
	"context"
	"fmt"
	"log"
	"sync"
	api "test3k/authDB/pkg/api"

	kafka "github.com/segmentio/kafka-go"
)

type user struct {
	Code     string
	Login    string
	Password string
}

type GRPCServer struct {
	mu    sync.Mutex
	users map[string]user
	api.UnimplementedAuthDBServer
}

func NewGRPCServer() *GRPCServer {
	return &GRPCServer{
		mu:    sync.Mutex{},
		users: make(map[string]user),
	}
}

func (s *GRPCServer) Login(context.Context, *api.LoginRequest) (*api.LoginResponse, error) {
	return nil, nil
}

func (s *GRPCServer) Registration(context.Context, *api.RegistrationRequest) (*api.RegistrationResponse, error) {
	ctx := context.Background()
	consumer := kafka.NewReader(kafka.ReaderConfig{
		Brokers:   []string{"localhost:9092"},
		Topic:     "topic-A",
		Partition: 0,
		MinBytes:  10e3, // 10KB
		MaxBytes:  10e6, // 10MB
	})
	defer consumer.Close()

	//
	// consumer.SetOffset(42)

	//
	for {
		m, err := consumer.ReadMessage(ctx)
		if err != nil {
			log.Fatal(err)
		}

		fmt.Printf("message at offset %d: %s = %s\n", m.Offset, string(m.Key), string(m.Value))
	}

	return nil, nil
}

func (s *GRPCServer) Confirmation(context.Context, *api.ConfirmationRequest) (*api.ConfirmationResponse, error) {
	return nil, nil
}