import java.io.*;
import java.util.*;

import net.deterlab.abac.*;

/**
 * Simple test of the swig generated JNI for libabac. Loads credentials
 * from keystore and runs a query against them.
 */
public class prover_test {

    static {
        System.loadLibrary("jABAC");
    }

    public static void main(String[] args) throws IOException {
        if (args.length != 4) {
            System.out.println("Usage: prover_test <keystore> <issuer> <roletype> <principal>");
            System.out.println("    runs the query issuer.role <-?- principal and prints the result"
);
            System.exit(1);
        }

        Context ctxt = new Context();

        String keystore=args[0];
        String iname=args[1];
        String roletype=args[2];
        String pname=args[3];

/*
role="[keyid:${pID}].role:delicious"
principal="[keyid:${cID}]"
*/
        String ifname=iname+"_ID.pem";
        String pfname=pname+"_ID.pem";

        ID iID=new ID(ifname);
        ID pID=new ID(pfname);

        String ikeyid=iID.id_keyid();
        String pkeyid=pID.id_keyid();

        String role="[keyid:"+ikeyid+"].role:"+roletype;
        String principal="[keyid:"+pkeyid+"]";

        ctxt.load_directory(keystore);

        /* what is in prolog db 
        ctxt.dump_yap_db(); */

        AttributeVector credentials = ctxt.query(role, principal);

        long sz=credentials.size();
 
        if(sz > 0)
            System.out.println("prover success!!");
        else
            System.out.println("prover failed!!");

        for(int i=0; i<sz; i++) {
            Attribute c=credentials.get(i);
            System.out.println(c.head_string()+"<- "+c.tail_string());
        }

        ctxt.free_context_now();
        System.out.println("done, main from prover_test.java");
    }
}