package org.warp.jcwdb;

import static org.junit.Assert.assertTrue;

import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.ArrayList;

import org.junit.Test;
import org.warp.jcwdb.EntryReference;
import org.warp.jcwdb.JCWDatabase;
import org.warp.jcwdb.LightList;

/**
 * Unit test for simple App.
 */
public class AppTest 
{
    /**
     * Rigorous Test :-)
     */
    @Test
    public void shouldAnswerWithTrue()
    {
        assertTrue( true );
    }
    
    /**
     * 
     * @throws IOException 
     */
    @Test
    public void shouldReadCustomClasses() throws IOException
    {
    	CustomClass customClass = new CustomClass();
    	customClass.primitive = 1;
    	customClass.string = "test";
    	
    	Path path = Files.createTempFile("", ".db"), idx = Files.createTempFile("", ".idx");
    	
    	JCWDatabase db = new JCWDatabase(path, idx);
    	EntryReference<LightList<CustomClass>> ref = db.getRoot();
    	ref.editValue((root, saver) -> {
        	root.add(customClass);
    	});
    	db.close();
    	
    	JCWDatabase db2 = new JCWDatabase(path, idx);
    	EntryReference<LightList<CustomClass>> ref2 = db2.getRoot();
    	CustomClass customClass2 = ref2.getValueReadOnly().getReadOnlyValue(0);
    	assertTrue(customClass.equals(customClass2));
    	assertTrue(customClass.string.equals(customClass2.string));
    	db2.close();
    	Files.delete(path);
    	Files.delete(idx);
    }
    
    public static class CustomClass {
    	public String string;
    	public int primitive;
		@Override
		public int hashCode() {
			final int prime = 31;
			int result = 1;
			result = prime * result + primitive;
			result = prime * result + ((string == null) ? 0 : string.hashCode());
			return result;
		}
		@Override
		public boolean equals(Object obj) {
			if (this == obj)
				return true;
			if (obj == null)
				return false;
			if (getClass() != obj.getClass())
				return false;
			CustomClass other = (CustomClass) obj;
			if (primitive != other.primitive)
				return false;
			if (string == null) {
				if (other.string != null)
					return false;
			} else if (!string.equals(other.string))
				return false;
			return true;
		}
    	
    	
    }
    
    /**
     * 
     * @throws IOException 
     */
    @Test
    public void shouldActAsAnArrayListWithEqualObjects() throws IOException
    {
    	Path path = Files.createTempFile("", ".db"), idx = Files.createTempFile("", ".idx");
    	JCWDatabase db = new JCWDatabase(path, idx);
    	EntryReference<LightList<String>> ref = db.getRoot();
    	LightList<String> list1 = ref.getValueReadOnly();
    	ArrayList<String> list2 = new ArrayList<String>();
		String s = "a";
    	for (int i = 0; i < 10; i++) {
    		list1.add(s);
    		list2.add(s);
    	}
    	assertTrue(list1.size() == list2.size());
    	for (int i = 0; i < 10; i++) {
    		assertTrue(list1.get(i) == list2.get(i));
    		assertTrue(list2.get(i) == list1.get(i));
    	}
    	db.close();
    	Files.delete(path);
    	Files.delete(idx);
    }
}