package org.apache.maven.surefire.booter;

/*
 * 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.
 */

import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Properties;
import java.util.StringTokenizer;

import static org.apache.maven.surefire.util.ReflectionUtils.loadClass;
import static org.apache.maven.surefire.util.internal.StringUtils.ISO_8859_1;
import static org.apache.maven.surefire.util.internal.StringUtils.isNotBlank;

/**
 * @author Kristian Rosenvold
 */
public class TypeEncodedValue
{
    private final String type;
    private final String value;

    public TypeEncodedValue( String type, String value )
    {
        this.type = type;
        this.value = value;
    }

    private boolean isTypeClass()
    {
        return Class.class.getName().equals( type );
    }

    public Object getDecodedValue()
    {
        return getDecodedValue( Thread.currentThread().getContextClassLoader() );
    }

    public Object getDecodedValue( ClassLoader classLoader )
    {
        if ( type.trim().isEmpty() )
        {
            return null;
        }
        else if ( type.equals( String.class.getName() ) )
        {
            return value;
        }
        else if ( isTypeClass() )
        {
            return loadClass( classLoader, value );
        }
        else if ( type.equals( File.class.getName() ) )
        {
            return new File( value );
        }
        else if ( type.equals( File[].class.getCanonicalName() ) )
        {
            List<File> suites = new ArrayList<File>();
            for ( StringTokenizer tokenizer = new StringTokenizer( value, "|" ); tokenizer.hasMoreTokens(); )
            {
                String file = tokenizer.nextToken();
                if ( isNotBlank( file ) )
                {
                    suites.add( new File( file ) );
                }
            }
            return suites;
        }
        else if ( type.equals( Boolean.class.getName() ) )
        {
            return Boolean.valueOf( value );
        }
        else if ( type.equals( Integer.class.getName() ) )
        {
            return Integer.valueOf( value );
        }
        else if ( type.equals( Properties.class.getName() ) )
        {
            Properties result = new Properties();
            try
            {
                result.load( new ByteArrayInputStream( value.getBytes( ISO_8859_1 ) ) );
                return result;
            }
            catch ( IOException e )
            {
                throw new IllegalStateException( "bug in property conversion", e );
            }
        }
        else
        {
            throw new IllegalArgumentException( "Unknown parameter type: " + type );
        }
    }

    @Override
    public boolean equals( Object o )
    {
        if ( this == o )
        {
            return true;
        }
        if ( o == null || getClass() != o.getClass() )
        {
            return false;
        }

        TypeEncodedValue that = (TypeEncodedValue) o;

        return equalsType( that ) && equalsValue( that );

    }

    @Override
    public int hashCode()
    {
        int result = type != null ? type.hashCode() : 0;
        result = 31 * result + ( value != null ? value.hashCode() : 0 );
        return result;
    }

    private boolean equalsType( TypeEncodedValue that )
    {
        return type == null ? that.type == null : type.equals( that.type );
    }

    private boolean equalsValue( TypeEncodedValue that )
    {
        return value == null ? that.value == null : value.equals( that.value );
    }
}