import com.openalpr.jni.Alpr;
import com.openalpr.jni.AlprPlate;
import com.openalpr.jni.AlprPlateResult;
import com.openalpr.jni.AlprResults;

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

public class Main {

    public static void main(String[] args) throws Exception {

        String country = "", configfile = "", runtimeDataDir = "", licensePlate = "";
        if (args.length == 4) {
                country = args[0];
                configfile = args[1];
                runtimeDataDir = args[2];
                licensePlate = args[3];
        }
        else
        {
            System.err.println("Program requires 4 arguments: Country, Config File, runtime_data dir, and license plate image");
            System.exit(1);
        }

        Alpr alpr = new Alpr(country, configfile, runtimeDataDir);

        alpr.setTopN(10);
        alpr.setDefaultRegion("wa");

        // Read an image into a byte array and send it to OpenALPR
        Path path = Paths.get(licensePlate);
        byte[] imagedata = Files.readAllBytes(path);

        AlprResults results = alpr.recognize(imagedata);

        System.out.println("OpenALPR Version: " + alpr.getVersion());
        System.out.println("Image Size: " + results.getImgWidth() + "x" + results.getImgHeight());
        System.out.println("Processing Time: " + results.getTotalProcessingTimeMs() + " ms");
        System.out.println("Found " + results.getPlates().size() + " results");

        System.out.format("  %-15s%-8s\n", "Plate Number", "Confidence");
        for (AlprPlateResult result : results.getPlates())
        {
            for (AlprPlate plate : result.getTopNPlates()) {
                if (plate.isMatchesTemplate())
                    System.out.print("  * ");
                else
                    System.out.print("  - ");
                System.out.format("%-15s%-8f\n", plate.getCharacters(), plate.getOverallConfidence());
            }
        }


        // Make sure to call this to release memory
        alpr.unload();
    }
}