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package com.sun.star.lib.uno.bridges.java_remote;

import com.sun.star.uno.IQueryInterface;
import com.sun.star.uno.MappingException;
import com.sun.star.uno.Type;
import com.sun.star.uno.UnoRuntime;
import com.sun.star.uno.XInterface;
import com.sun.star.uno.XNamingService;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.lang.reflect.UndeclaredThrowableException;

import org.junit.Test;
import static org.junit.Assert.*;

public final class ProxyFactory_Test {
    @Test
    public void testQueryInterface() {
        TestRequestHandler handler = new TestRequestHandler();
        Type type = new Type(XNamingService.class);
        Object proxy = new ProxyFactory(handler, null).create("TestOID", type);
        assertTrue("", proxy == ((IQueryInterface) proxy).queryInterface(type));
        assertTrue("", proxy == UnoRuntime.queryInterface(type, proxy));
    }

    @Test
    public void testExceptionHandling() throws Exception {
        TestRequestHandler handler = new TestRequestHandler();
        Object proxy = new ProxyFactory(handler, null).create(
            "TestOID", new Type(XNamingService.class));
        testExceptions(
            handler,
            proxy.getClass().getMethod("queryInterface",
                                       new Class[] { Type.class }),
            proxy, new Object[] { new Type(XInterface.class) },
            new Class[] { null, MappingException.class,
                          com.sun.star.uno.RuntimeException.class,
                          UndeclaredThrowableException.class,
                          NullPointerException.class,
                          UndeclaredThrowableException.class });
        testExceptions(
            handler,
            proxy.getClass().getMethod("getRegisteredObject",
                                       new Class[] { String.class }),
            proxy, new Object[] { "TestName" },
            new Class[] { null, MappingException.class,
                          com.sun.star.uno.RuntimeException.class,
                          com.sun.star.uno.Exception.class,
                          NullPointerException.class, Exception.class });
    }

    private void testExceptions(TestRequestHandler handler, Method method,
                                Object obj, Object[] args, Class[] exceptions)
        throws Exception
    {
        for (int i = 0; i < exceptions.length; ++i) {
            handler.setModus(i);
            testExceptionType(method, obj, args, exceptions[i]);
        }
    }

    private void testExceptionType(Method method, Object obj, Object[] args,
                                   Class exception) throws Exception {
        try {
            method.invoke(obj, args);
            assertTrue("expected exception: " + exception, exception == null);
        } catch (InvocationTargetException e) {
            assertTrue("unexpected exception: " + e.getTargetException(),
                   exception != null
                   && exception.isInstance(e.getTargetException()));
            // TODO  check stack trace
        }
    }

    private static final class TestRequestHandler implements RequestHandler {
        public Object sendRequest(String oid, Type type, String operation,
                                  Object[] args)
            throws Throwable
        {
            if (operation.equals("release")) {
                return null;
            }
            int m;
            synchronized (lock) {
                m = modus;
            }
            switch (m) {
            case 0:
                return operation.equals("getInstance") ? "TestResult" : null;
            case 1:
                // TODO  What is this test, with an obviously obsoleted
                // MappingException, good for?
                throw new MappingException();
            case 2:
                throw new com.sun.star.uno.RuntimeException();
            case 3:
                throw new com.sun.star.uno.Exception();
            case 4:
                throw new NullPointerException();
            default:
                throw new Throwable();
            }
        }

        public void setModus(int modus) {
            synchronized (lock) {
                this.modus = modus;
            }
        }

        private final Object lock = new Object();
        private int modus = 0;
    }
}