package net.sourceforge.fenixedu.util;

import java.util.Arrays;
import java.util.List;

import pt.utl.ist.fenix.tools.util.StringNormalizer;

public class StringUtils {

    static final public String EMPTY = org.apache.commons.lang.StringUtils.EMPTY;

    static final public String SINGLE_SPACE = " ";

    public static boolean verifyContainsWithEquality(String originalString, String stringToCompare) {
	if (originalString == null || stringToCompare == null) {
	    return false;
	}
	String[] stringOriginalArray = getStrings(originalString);
	String[] stringToCompareArray = getStrings(stringToCompare);
	normalizeStringArray(stringOriginalArray);
	normalizeStringArray(stringToCompareArray);
	return verifyContainsWithEquality(stringOriginalArray, stringToCompareArray);
    }

    public static boolean verifyContainsWithEquality(String[] originalString, String[] stringToCompare) {
	if (stringToCompare == null) {
	    return true;
	}

	if (originalString != null) {
	    int j, i;
	    for (i = 0; i < stringToCompare.length; i++) {
		if (!stringToCompare[i].equals("")) {
		    for (j = 0; j < originalString.length; j++) {
			if (originalString[j].equals(stringToCompare[i])) {
			    break;
			}
		    }
		    if (j == originalString.length) {
			return false;
		    }
		}
	    }
	    if (i == stringToCompare.length) {
		return true;
	    }
	}
	return false;
    }

    private static void normalizeStringArray(String[] string) {
	for (int i = 0; i < string.length; i++) {
	    string[i] = StringNormalizer.normalize(string[i]);
	}
    }

    public static String[] getStrings(String string) {
	String[] strings = null;
	if (string != null && !string.trim().equals("")) {
	    strings = string.trim().split(" ");
	    normalizeStringArray(strings);
	}
	return strings;
    }

    public static String normalize(String string) {
	return StringNormalizer.normalize(string);
    }

    public static String rightPad(String field, int LINE_LENGTH, char fillPaddingWith) {
	if (!org.apache.commons.lang.StringUtils.isEmpty(field) && !field.endsWith(" ")) {
	    field += " ";
	}

	return org.apache.commons.lang.StringUtils.rightPad(field, LINE_LENGTH, fillPaddingWith);
    }

    public static String multipleLineRightPad(String field, int LINE_LENGTH, char fillPaddingWith) {
	if (!org.apache.commons.lang.StringUtils.isEmpty(field) && !field.endsWith(" ")) {
	    field += " ";
	}

	if (field.length() < LINE_LENGTH) {
	    return org.apache.commons.lang.StringUtils.rightPad(field, LINE_LENGTH, fillPaddingWith);
	} else {
	    final List<String> words = Arrays.asList(field.split(" "));
	    int currentLineLength = 0;
	    String result = EMPTY;

	    for (final String word : words) {
		final String toAdd = word + " ";

		if (currentLineLength + toAdd.length() > LINE_LENGTH) {
		    result = org.apache.commons.lang.StringUtils.rightPad(result, LINE_LENGTH, fillPaddingWith) + '\n';
		    currentLineLength = toAdd.length();
		} else {
		    currentLineLength += toAdd.length();
		}

		result += toAdd;
	    }

	    if (currentLineLength < LINE_LENGTH) {
		return org.apache.commons.lang.StringUtils.rightPad(result, result.length() + (LINE_LENGTH - currentLineLength),
			fillPaddingWith);
	    }

	    return result;
	}
    }

    public static String multipleLineRightPadWithSuffix(String field, int LINE_LENGTH, char fillPaddingWith, String suffix) {
	if (!org.apache.commons.lang.StringUtils.isEmpty(field) && !field.endsWith(" ")) {
	    field += " ";
	}

	if (org.apache.commons.lang.StringUtils.isEmpty(suffix)) {
	    return multipleLineRightPad(field, LINE_LENGTH, fillPaddingWith);
	} else if (!suffix.startsWith(" ")) {
	    suffix = " " + suffix;
	}

	int LINE_LENGTH_WITH_SUFFIX = LINE_LENGTH - suffix.length();

	if (field.length() < LINE_LENGTH_WITH_SUFFIX) {
	    return StringUtils.rightPad(field, LINE_LENGTH_WITH_SUFFIX, fillPaddingWith) + suffix;
	} else {
	    final List<String> words = Arrays.asList(field.split(" "));
	    int currentLineLength = 0;
	    String result = EMPTY;

	    for (final String word : words) {
		final String toAdd = word + " ";

		if (currentLineLength + toAdd.length() > LINE_LENGTH) {
		    result = org.apache.commons.lang.StringUtils.rightPad(result, LINE_LENGTH, fillPaddingWith) + '\n';
		    currentLineLength = toAdd.length();
		} else {
		    currentLineLength += toAdd.length();
		}

		result += toAdd;
	    }

	    if (currentLineLength < LINE_LENGTH_WITH_SUFFIX) {
		return StringUtils.rightPad(result, result.length() + (LINE_LENGTH_WITH_SUFFIX - currentLineLength),
			fillPaddingWith)
			+ suffix;
	    } else {
		return StringUtils.rightPad(result, result.length() + (LINE_LENGTH - currentLineLength), fillPaddingWith) + "\n"
			+ org.apache.commons.lang.StringUtils.leftPad(suffix, LINE_LENGTH, fillPaddingWith);
	    }
	}
    }

    public static boolean isEmpty(String content) {
	return org.apache.commons.lang.StringUtils.isEmpty(content);
    }

    public static boolean isNumeric(String content) {
	return org.apache.commons.lang.StringUtils.isNumeric(content);
    }

    public static String upperCase(String content) {
	return org.apache.commons.lang.StringUtils.upperCase(content);
    }

}