package client

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

	"google.golang.org/grpc"
	"google.golang.org/grpc/credentials"
	"certmanager/pkg/cmctl"
)

const (
	DefaultWrpcPort int = 20121
	DefaultGrpcPort int = 20122
)

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

func NewClient(access *Access) (cmctl.ControlClient, error) {
	var err error
	var cli cmctl.ControlClient

	tlsConfig := &tls.Config{
		InsecureSkipVerify: true,
	}
	const dialTimeout time.Duration = 1 * time.Second
	const idleTimeout time.Duration = 5 * 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 cli, fmt.Errorf("Dial error: %v", err)
	}
	cli = cmctl.NewControlClient(conn)
	return cli, err
}