export type OpenApiVersion = '3.2' | '3.1' | '3.0' | '2.0';

export class VersionDetector {
    detectVersion(data: any): OpenApiVersion | null {
        if (typeof data?.openapi === 'string') {
            const version = data.openapi;
            if (version.startsWith('3.2')) return '3.2';
            if (version.startsWith('3.1')) return '3.1';
            if (version.startsWith('3.0')) return '3.0';
        }
        
        if (data?.swagger === '2.0') return '2.0';
        
        return null;
    }

    isOpenApi3(version: OpenApiVersion | null): boolean {
        return version === '3.0' || version === '3.1' || version === '3.2';
    }

    isOpenApi2(version: OpenApiVersion | null): boolean {
        return version === '2.0';
    }

    getDefaultVersion(): OpenApiVersion {
        return '3.2'; // Default to latest stable version
    }

    getSupportedVersions(): OpenApiVersion[] {
        return ['3.2', '3.1', '3.0', '2.0'];
    }
}