package net.yacy.document.parser;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.net.MalformedURLException;
import java.nio.charset.Charset;
import static junit.framework.Assert.assertTrue;
import junit.framework.TestCase;
import net.yacy.cora.document.id.AnchorURL;
import net.yacy.document.Document;
import net.yacy.document.Parser;
import org.junit.Test;

public class htmlParserTest extends TestCase {

        @Test
	public void testGetRealCharsetEncoding() {
		String[][] testStrings = new String[][] {
	       new String[]{null,null},
	       new String[]{"windows1250","windows-1250"},
	       new String[]{"windows_1250","windows-1250"},
	       new String[]{"ISO-8859-1","ISO-8859-1"},
	       new String[]{"ISO8859-1","ISO-8859-1"},
	       new String[]{"ISO-88591","ISO-8859-1"},
	       new String[]{"ISO88591","ISO-8859-1"},
	       new String[]{"iso_8859_1","ISO-8859-1"},
	       new String[]{"cp-1252","windows-1252"},
	       new String[]{"gb_2312","gb2312"},           // was: x-EUC-CN
	       new String[]{"gb_2312-80","gb2312"},           // was: x-EUC-CN
	       new String[]{"UTF-8;","UTF-8"}
		};
		
		for (int i=0; i < testStrings.length; i++) {
			// desired conversion result
			String shouldBe = testStrings[i][1];
			shouldBe = shouldBe!=null ? shouldBe.toLowerCase() : null;
			
			// conversion result
			String charset = htmlParser.patchCharsetEncoding(testStrings[i][0]);
			
			// test if equal
			assertEquals(shouldBe, charset!=null ? charset.toLowerCase() : null);
			System.out.println("testGetRealCharsetEncoding: " + (testStrings[i][0]!=null?testStrings[i][0]:"null") + " -> " + (charset!=null?charset:"null") + " | Supported: " + (charset!=null?Charset.isSupported(charset):false));
			
		}
		
	}

    /**
     * Test of parse method, of class htmlParser.
     * - test getCharset
     */
    @Test
    public void testParse() throws MalformedURLException, Parser.Failure, InterruptedException, FileNotFoundException {
        System.out.println("htmlParser.parse");

        String[] testFiles = {
            "umlaute_html_iso.html",
            "umlaute_html_utf8.html",
            "umlaute_html_namedentities.html"};

        final String mimetype = "text/html";
        //final String resulttxt = "In München steht ein Hofbräuhaus. Dort gibt es Bier aus Maßkrügen.";

        for (String testfile : testFiles) {
            final String filename = "test/parsertest/" + testfile;
            final File file = new File(filename);

            final AnchorURL url = new AnchorURL("http://localhost/" + filename);
            System.out.println("parse file: " + filename);

            htmlParser p = new htmlParser();
            final Document[] docs = p.parse(url, mimetype, null, new FileInputStream(file));

            Document doc = docs[0];
            String txt = doc.getCharset();
            assertTrue("get Charset", txt != null);
            System.out.println("detected charset = " + txt);

        }
    }
}