package auth

import (
	"crypto/sha256"
	"encoding/hex"
	"fmt"
)

// Authenticator handles authentication
type Authenticator struct {
	user     string
	password string
	hash     string
}

// New creates a new authenticator with the given credentials
func New(username, password string) *Authenticator {
	authString := fmt.Sprintf("%s:%s", username, password)
	hash := sha256.Sum256([]byte(authString))
	hashStr := hex.EncodeToString(hash[:])

	return &Authenticator{
		user:     username,
		password: password,
		hash:     hashStr,
	}
}

// Verify checks if the provided username and password are valid
func (a *Authenticator) Verify(username, password string) bool {
	authString := fmt.Sprintf("%s:%s", username, password)
	hash := sha256.Sum256([]byte(authString))
	hashStr := hex.EncodeToString(hash[:])
	return hashStr == a.hash
}