export interface AuthenticationPreferences {
    authMode: AuthMode;
    method: ValidAuthMethod;
}

/**
 * Authentication modes available to enter a room.
 */
export const enum AuthMode {
    NONE = 'none', // No authentication required
    MODERATORS_ONLY = 'moderators_only', // Only moderators need authentication
    ALL_USERS = 'all_users' // All users need authentication
}

/**
 * Authentication method base interface.
 */
export interface AuthMethod {
    type: AuthType;
}

/**
 * Enum for authentication types.
 */
export const enum AuthType {
    SINGLE_USER = 'single-user'
    // MULTI_USER = 'multi-user',
    // OAUTH_ONLY = 'oauth-only'
}

/**
 * Authentication method: Single user with fixed credentials.
 */
export interface SingleUserAuth extends AuthMethod {
    type: AuthType.SINGLE_USER;
    credentials: SingleUserCredentials;
}

/**
 * Authentication method: Multiple users with optional OAuth integration.
 */
// export interface MultiUserAuth extends AuthMethod {
//     type: AuthType.MULTI_USER;
//     oauthProviders?: OAuthProviderConfig[];
// }

/**
 * Authentication method: Only OAuth authentication.
 */
// export interface OAuthOnlyAuth extends AuthMethod {
//     type: AuthType.OAUTH_ONLY;
//     oauthProviders: OAuthProviderConfig[];
// }

/**
 * Union type for allowed authentication methods.
 */
export type ValidAuthMethod = SingleUserAuth /* | MultiUserAuth | OAuthOnlyAuth */;

/**
 * Configuration for a single user login method.
 */
export interface SingleUserCredentials {
    username: string;
    passwordHash: string;
}

/**
 * Configuration for OAuth authentication.
 */
// export interface OAuthProviderConfig {
//     provider: OAuthProvider;
//     clientId: string;
//     clientSecret: string;
//     redirectUri: string;
// }

/**
 * Supported OAuth providers.
 */
// export const enum OAuthProvider {
//     GOOGLE = 'google',
//     GITHUB = 'github'
// }

// DTOs
export interface AuthenticationPreferencesDTO {
    authMode: AuthMode;
    method: ValidAuthMethodDTO;
}

export type ValidAuthMethodDTO = SingleUserAuthDTO;

export type SingleUserAuthDTO = Omit<SingleUserAuth, 'credentials'>;