/*
 * Copyright 2013, Google Inc.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
 * distribution.
 *     * Neither the name of Google Inc. nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

package org.jf.baksmali;

import com.google.common.base.Charsets;
import com.google.common.io.Resources;
import junit.framework.Assert;
import org.jf.baksmali.Adaptors.ClassDefinition;
import org.jf.dexlib2.DexFileFactory;
import org.jf.dexlib2.Opcodes;
import org.jf.dexlib2.analysis.ClassPath;
import org.jf.dexlib2.analysis.ClassProvider;
import org.jf.dexlib2.iface.ClassDef;
import org.jf.dexlib2.iface.DexFile;
import org.jf.util.IndentingWriter;
import org.jf.util.TextUtils;
import org.junit.Test;

import javax.annotation.Nonnull;
import java.io.File;
import java.io.IOException;
import java.io.StringWriter;
import java.net.URISyntaxException;
import java.net.URL;
import java.util.ArrayList;

public class AnalysisTest {

    @Test
    public void ConstructorTest() throws IOException, URISyntaxException {
        runTest("ConstructorTest", true);
    }

    @Test
    public void RegisterEqualityOnMergeTest() throws IOException, URISyntaxException {
        runTest("RegisterEqualityOnMergeTest", true);
    }

    @Test
    public void UninitRefIdentityTest() throws IOException, URISyntaxException {
        runTest("UninitRefIdentityTest", true);
    }

    @Test
    public void InstanceOfTest() throws IOException, URISyntaxException {
        runTest("InstanceOfTest", true, true);
    }

    @Test
    public void MultipleStartInstructionsTest() throws IOException, URISyntaxException {
        runTest("MultipleStartInstructionsTest", true);
    }

    @Test
    public void DuplicateTest() throws IOException, URISyntaxException {
        runTest("DuplicateTest", false);
    }

    @Test
    public void LocalTest() throws IOException, URISyntaxException {
        runTest("LocalTest", false);
    }

    public void runTest(String test, boolean registerInfo) throws IOException, URISyntaxException {
        runTest(test, registerInfo, false);
    }

    public void runTest(String test, boolean registerInfo, boolean isArt) throws IOException, URISyntaxException {
        String dexFilePath = String.format("%s%sclasses.dex", test, File.separatorChar);

        DexFile dexFile = DexFileFactory.loadDexFile(findResource(dexFilePath), Opcodes.getDefault());

        BaksmaliOptions options = new BaksmaliOptions();
        if (registerInfo) {
            options.registerInfo = BaksmaliOptions.ALL | BaksmaliOptions.FULLMERGE;
            if (isArt) {
                options.classPath = new ClassPath(new ArrayList<ClassProvider>(), true, 56);
            } else {
                options.classPath = new ClassPath();
            }
        }
        options.implicitReferences = false;

        for (ClassDef classDef: dexFile.getClasses()) {
            StringWriter stringWriter = new StringWriter();
            IndentingWriter writer = new IndentingWriter(stringWriter);
            ClassDefinition classDefinition = new ClassDefinition(options, classDef);
            classDefinition.writeTo(writer);
            writer.close();

            String className = classDef.getType();
            String smaliPath = String.format("%s%s%s.smali", test, File.separatorChar,
                    className.substring(1, className.length() - 1));
            String smaliContents = readResource(smaliPath);

            Assert.assertEquals(TextUtils.normalizeWhitespace(smaliContents),
                    TextUtils.normalizeWhitespace((stringWriter.toString())));
        }
    }

    @Nonnull
    private File findResource(String resource) throws URISyntaxException {
        URL resUrl = Resources.getResource(resource);
        return new File(resUrl.toURI());
    }

    @Nonnull
    private String readResource(String resource) throws URISyntaxException, IOException {
        URL url = Resources.getResource(resource);
        return Resources.toString(url, Charsets.UTF_8);
    }
}