package org.apache.bcel.verifier.tests;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.net.URISyntaxException;

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.
 *
 */
public abstract class TestCreator {

    // Common package base name for generated test classes
    protected static final String TEST_PACKAGE = TestCreator.class.getPackage().getName();

    public void create() throws IOException {
        final File classFile = new File(getPackageFolder(), getClassName());
        try (FileOutputStream out = new FileOutputStream(classFile)) {
            create(out);
        }
    }

    private String getClassName() {
        final String name = getClass().getName();
        return name.substring(name.lastIndexOf('.')+1).replace("Creator", ".class");
    }

    private File getPackageFolder() throws IOException {
        return new File(getClassesFolder(), getPackageName());
    }

    protected String getPackageName() {
        return getClass().getPackage().getName().replace('.', '/');
    }

    private File getClassesFolder() throws IOException {
        try {
            return new File(getClass().getProtectionDomain().getCodeSource().getLocation().toURI());
        } catch (final URISyntaxException e) {
            throw new IOException(e);
        }
    }

    public abstract void create(OutputStream out) throws IOException;
}