package client

import (
	"context"
	"crypto/tls"
	"fmt"
	"time"

	"google.golang.org/grpc"
	"google.golang.org/grpc/credentials"

	"mbase/pkg/mbctl"
)

const (
	DefaultPort uint32 = 1027
)

type Access struct {
	Hostname string
	Port     uint32
	Username string
	Password string
}

func NewClient(access *Access) (*grpc.ClientConn, mbctl.ControlClient, error) {
	var err error
	var cli mbctl.ControlClient

	tlsConfig := &tls.Config{
		InsecureSkipVerify: true,
	}
	const dialTimeout time.Duration = 10 * time.Second
	const idleTimeout time.Duration = 30 * time.Second

	authCred := NewAuthCredential(access.Username, access.Password)
	dialOpts := []grpc.DialOption{
		grpc.WithTransportCredentials(credentials.NewTLS(tlsConfig)),
		grpc.WithPerRPCCredentials(authCred),
		grpc.WithBlock(),
		grpc.WithIdleTimeout(idleTimeout),
	}
	address := fmt.Sprintf("%s:%d", access.Hostname, access.Port)
	ctx, _ := context.WithTimeout(context.Background(), dialTimeout)
	conn, err := grpc.DialContext(ctx, address, dialOpts...)
	if err != nil {
		return conn, cli, fmt.Errorf("Dial error: %v", err)
	}
	cli = mbctl.NewControlClient(conn)
	return conn, cli, err
}