package org.litesoft.useragent;

import org.junit.Test;

import junit.framework.Assert;

import java.io.*;
import java.util.*;

public class UserAgentFormFactorDeterminerImplTest {
    public static final String USER_AGENT_FILES_SUB_DIR = "UserAgentFiles";

    private static final UserAgentFormFactorDeterminer FFD = new UserAgentFormFactorDeterminerImpl();

    private static String[] readTextFile( File pTextFile )
            throws IOException {
        List<String> zLines = new ArrayList<>();
        try (Scanner scanner = new Scanner( pTextFile, "UTF-8" )) {
            while ( scanner.hasNextLine() ) {
                zLines.add( scanner.nextLine() );
            }
        }
        return zLines.toArray( new String[zLines.size()] );
    }

    private static void checkFileEntries( UserAgentFormFactor pExpected, String pFileNameWithUserAgentPerLine )
            throws IOException {
        String[] zLines = readTextFile( new File( USER_AGENT_FILES_SUB_DIR, pFileNameWithUserAgentPerLine + ".txt" ) );
        for ( int i = 0; i < zLines.length; i++ ) {
            String zLine = zLines[i].trim();
            if ( (zLine.length() != 0) && !zLine.startsWith( "!" ) ) {
                UserAgentFormFactor zActual = FFD.determine( zLine );
                if ( zActual != pExpected ) {
                    Assert.assertEquals( "From '" + pFileNameWithUserAgentPerLine + "[" + i + "]" + "': " + zLine, pExpected, zActual );
                }
            }
        }
    }

    private static void checkEntriesFromFiles( UserAgentFormFactor pExpected, String... pFileNamesWithUserAgentPerLine )
            throws IOException {
        for ( String zFileName : pFileNamesWithUserAgentPerLine ) {
            checkFileEntries( pExpected, zFileName );
        }
    }

    @Test
    public void testDetermine()
            throws Exception {
        checkEntriesFromFiles( UserAgentFormFactor.SingleViewOnly,
                               "iPhone",
                               "iPod",
                               "iPad",
                               "Silk",
                               "Tizen",
                               "Kindle",
                               "Fennec",
                               "Android",
                               "IE-Mobile",
                               "SymbianOS",
                               "OperaMini",
                               "OperaMobi",
                               "OperaTablet",
                               "MobileFirefox" );

        checkEntriesFromFiles( UserAgentFormFactor.MultiViewable,
                               "Other" );
    }
}