import java.nio.file.Files;
import java.nio.file.Paths;

import org.json.JSONArray;
import org.json.JSONObject;

import ai.lucidtech.las.sdk.Client;
import ai.lucidtech.las.sdk.ContentType;
import ai.lucidtech.las.sdk.Credentials;

public class Main {
    public static void main(String[] args) throws IOException, URISyntaxException {
        // TODO enter values from your API Key:
        Credentials credentials = new Credentials(
            clientId,
            clientSecret,
            authEndpoint,
            apiEndpoint
        );
        // TODO change values:
        String modelName = "las:organization:cradl/las:model:invoice";
        String pdf = "<filename>.pdf";
        
        Client client = new Client(credentials);
        JSONObject document = client.createDocument(Files.readAllBytes(Paths.get(pdf)), ContentType.PDF);
        String documentId = document.getString("documentId");
        JSONObject prediction = this.createPrediction(documentId, modelName);
        JSONArray fields = (JSONArray) prediction.get("predictions");
        fields.forEach(item -> {
            JSONObject f = (JSONObject) item;
            System.out.println(f.getString("label") + " = " + f.getString("value") + " (" + f.getFloat("confidence") + ")");
        });
    }
}