package garage

import (
	"crypto/ed25519"
	"crypto/rand"
	"fmt"
	"net"
	"strconv"
)

// RemotePeer describes all information necessary to connect to a given garage
// node.
type RemotePeer struct {
	ID        string
	IP        string
	RPCPort   int
	S3APIPort int
}

// LocalPeer describes the configuration of a local garage instance.
type LocalPeer struct {
	RemotePeer

	AdminPort int
}

// GeneratePeerKey generates and returns a public/private key pair for a garage
// instance.
func GeneratePeerKey() (pubKey, privKey []byte) {
	pubKey, privKey, err := ed25519.GenerateKey(rand.Reader)
	if err != nil {
		panic(err)
	}

	return pubKey, privKey
}

// RPCAddr returns the address of the peer's RPC port.
func (p RemotePeer) RPCAddr() string {
	return net.JoinHostPort(p.IP, strconv.Itoa(p.RPCPort))
}

// RPCPeerAddr returns the full peer address (e.g. "id@ip:port") of the garage
// node for use in communicating over RPC.
func (p RemotePeer) RPCPeerAddr() string {
	return fmt.Sprintf("%s@%s", p.ID, p.RPCAddr())
}

// S3APIAddr returns the address of the peer's S3 API port.
func (p RemotePeer) S3APIAddr() string {
	return net.JoinHostPort(p.IP, strconv.Itoa(p.S3APIPort))
}

// AdminAddr returns the address of the peer's S3 API port.
func (p LocalPeer) AdminAddr() string {
	return net.JoinHostPort(p.IP, strconv.Itoa(p.AdminPort))
}