package kvdb

import "errors"

var (
	// ErrUserNotFound is returned when a user doesn't exist
	ErrUserNotFound = errors.New("user not found")

	// ErrUserAlreadyExists is returned when trying to create a user that already exists
	ErrUserAlreadyExists = errors.New("user already exists")
)

// User represents a user in the system
type User struct {
	AccessKeyID     string `json:"access_key_id"`
	SecretAccessKey string `json:"secret_access_key"`
	AccountID       string `json:"account_id"`
	Username        string `json:"username"`
	Email           string `json:"email"`
}

// KVDB defines the interface for key-value database operations
type KVDB interface {
	// User operations
	GetUser(accessKeyID string) (*User, error)
	CreateUser(user *User) error
	UpdateUser(user *User) error
	DeleteUser(accessKeyID string) error
	ListUsers() ([]*User, error)

	// User validation
	ValidateCredentials(accessKeyID, secretAccessKey string) (*User, error)

	// Bucket operations
	ResolveBucketName(bucketName string) (accountID string, bucketID string, err error)
	GetBucketConfig(accountID, bucketID string) (*BucketConfig, error)

	// Close the database
	Close() error
}