import com.aspose.cad.cloud.ApiClient;
import com.aspose.cad.cloud.ApiException;
import com.aspose.cad.cloud.Configuration;
import com.aspose.cad.cloud.api.CadApi;
import com.aspose.cad.cloud.model.CadConversionOptions;
import com.aspose.cad.cloud.model.FileInfo;
import java.io.File;
import java.io.FileOutputStream;
import java.io.InputStream;

public class DwtToPdfConverter {
    public static void main(String[] args) {
        // 1. Configure API client with temporary credentials
        ApiClient defaultClient = Configuration.getDefaultApiClient();
        defaultClient.setBasePath("https://api.aspose.cloud");
        defaultClient.setClientId("YOUR_CLIENT_ID");
        defaultClient.setClientSecret("YOUR_CLIENT_SECRET");

        CadApi cadApi = new CadApi();

        try {
            // 2. Upload DWT file to cloud storage
            File dwtFile = new File("input.dwt");
            FileInfo uploadedFile = cadApi.uploadFile("input.dwt", dwtFile);

            // 3. Set conversion options (optional)
            CadConversionOptions options = new CadConversionOptions();
            options.setDpi(300);
            options.setPageWidth(2100);   // A4 width in points
            options.setPageHeight(2970);  // A4 height in points

            // 4. Convert to PDF
            FileInfo result = cadApi.convertDocument(
                uploadedFile.getPath(),
                "PDF",
                options
            );

            // 5. Download the resulting PDF
            InputStream pdfStream = cadApi.downloadFile(result.getPath());
            try (FileOutputStream fos = new FileOutputStream("output.pdf")) {
                byte[] buffer = new byte[8192];
                int bytesRead;
                while ((bytesRead = pdfStream.read(buffer)) != -1) {
                    fos.write(buffer, 0, bytesRead);
                }
            }

            System.out.println("Conversion successful. PDF saved as output.pdf");
        } catch (ApiException e) {
            System.err.println("API error: " + e.getMessage());
        } catch (Exception ex) {
            ex.printStackTrace();
        }
    }
}