/*
 * Copyright 2015 Christian Basler
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package ch.dissem.bitmessage;

import ch.dissem.bitmessage.entity.BitmessageAddress;
import ch.dissem.bitmessage.entity.ObjectMessage;
import ch.dissem.bitmessage.entity.Plaintext;
import ch.dissem.bitmessage.entity.payload.Msg;
import ch.dissem.bitmessage.entity.payload.ObjectType;
import ch.dissem.bitmessage.entity.payload.Pubkey;
import ch.dissem.bitmessage.entity.payload.V4Pubkey;
import ch.dissem.bitmessage.entity.valueobject.PrivateKey;
import ch.dissem.bitmessage.exception.DecryptionFailedException;
import ch.dissem.bitmessage.utils.TestBase;
import ch.dissem.bitmessage.utils.TestUtils;
import org.junit.Test;

import java.io.IOException;
import java.util.Date;

import static org.junit.Assert.*;

public class SignatureTest extends TestBase {
    @Test
    public void ensureValidationWorks() throws IOException {
        ObjectMessage object = TestUtils.loadObjectMessage(3, "V3Pubkey.payload");
        Pubkey pubkey = (Pubkey) object.getPayload();
        assertTrue(object.isSignatureValid(pubkey));
    }

    @Test
    public void ensureSigningWorks() throws IOException {
        PrivateKey privateKey = new PrivateKey(false, 1, 1000, 1000);

        ObjectMessage objectMessage = new ObjectMessage.Builder()
                .objectType(ObjectType.PUBKEY)
                .stream(1)
                .payload(privateKey.getPubkey())
                .build();
        objectMessage.sign(privateKey);

        assertTrue(objectMessage.isSignatureValid(privateKey.getPubkey()));
    }

    @Test
    public void ensureMessageIsProperlySigned() throws IOException, DecryptionFailedException {
        BitmessageAddress identity = TestUtils.loadIdentity("BM-2cSqjfJ8xK6UUn5Rw3RpdGQ9RsDkBhWnS8");

        ObjectMessage object = TestUtils.loadObjectMessage(3, "V1Msg.payload");
        Msg msg = (Msg) object.getPayload();
        msg.decrypt(identity.getPrivateKey().getPrivateEncryptionKey());
        Plaintext plaintext = msg.getPlaintext();
        assertEquals(TestUtils.loadContact().getPubkey(), plaintext.getFrom().getPubkey());
        assertNotNull(plaintext);
        assertTrue(object.isSignatureValid(plaintext.getFrom().getPubkey()));
    }
}