/**
 * Copyright 2010-2013 The Kuali Foundation
 *
 * Licensed under the Educational Community 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.opensource.org/licenses/ecl2.php
 *
 * 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.
 */
package org.kuali.common.util;

import java.io.File;
import java.util.List;

import org.apache.commons.lang3.StringUtils;
import org.kuali.common.util.enc.EncUtils;

import com.google.common.base.Optional;
import com.google.common.collect.ImmutableList;

public abstract class Assert extends org.springframework.util.Assert {

        private static final String NO_NULLS = "null not allowed";
        private static final String NO_BLANKS = "blank strings not allowed";

        /**
         * Assert that the optional contains a non-null value
         */
        public static void present(Optional<?> optional) {
                present(optional, "optional value is required");
        }

        /**
         * Assert that the optional contains a non-null value
         */
        public static void present(Optional<?> optional, String msg) {
                isTrue(optional.isPresent());
        }

        /**
         * Assert that <code>text</code> is concealed
         */
        public static void concealed(String text) {
                isTrue(Str.isConcealed(text), "text must be concealed");
        }

        /**
         * Assert that <code>text</code> is not concealed
         */
        public static void notConcealed(String text) {
                isFalse(Str.isConcealed(text), "text is already concealed");
        }

        /**
         * Assert that <code>text</code> is encrypted
         */
        public static void encrypted(String text) {
                isTrue(EncUtils.isEncrypted(text), "text must be encrypted");
        }

        /**
         * Assert that <code>text</code> is not encrypted
         */
        public static void notEncrypted(String text) {
                isFalse(EncUtils.isEncrypted(text), "text is already encrypted");
        }

        /**
         * Assert that <code>text</code> is not encrypted
         * 
         * @deprecated use notEncrypted instead
         * @see notEncrypted
         */
        @Deprecated
        public static void decrypted(String text) {
                notEncrypted(text);
        }

        /**
         * Assert that none of the strings are encrypted
         * 
         * @deprecated use notEncrypted instead
         * @see notEncrypted
         */
        @Deprecated
        public static void decrypted(List<String> strings) {
                notEncrypted(strings);
        }

        /**
         * Assert that none of the strings in the list are encrypted
         */
        public static void notEncrypted(List<String> strings) {
                for (String string : strings) {
                        notEncrypted(string);
                }
        }

        /**
         * Assert that <code>port</code> is >= 0 and <= 65535
         */
        public static void isPort(int port) {
                isTrue(port >= 0 && port <= 65535, "Port must be a number between 0 and 65535");
        }

        /**
         * Assert that all of the numbers in the array are greater than or equal to zero
         */
        public static void noNegatives(int... numbers) {
                for (int number : numbers) {
                        notNegative(number);
                }
        }

        /**
         * Assert that all of the numbers in the array are greater than or equal to zero
         */
        public static void noNegatives(long... numbers) {
                for (long number : numbers) {
                        notNegative(number);
                }
        }

        /**
         * Assert that all of the numbers in the array are less than or equal to zero
         */
        public static void noPositives(int... numbers) {
                for (int number : numbers) {
                        notPositive(number);
                }
        }

        /**
         * Assert that <code>i</code> is greater than or equal to zero
         */
        public static void notNegative(int i) {
                isTrue(i >= 0, i + " is negative");
        }

        /**
         * Assert that <code>i</code> is greater than or equal to zero
         */
        public static void notNegative(long i) {
                isTrue(i >= 0, i + " is negative");
        }

        /**
         * Assert that <code>i</code> is less than or equal to zero
         */
        public static void notPositive(int i) {
                isTrue(i <= 0, i + " is positive");
        }

        /**
         * Assert that <code>i</code> is greater than zero
         */
        public static void positive(int i) {
                isTrue(i > 0, i + " is not a positive integer");
        }

        /**
         * Assert that <code>i</code> is greater than zero
         */
        public static void positive(long i) {
                isTrue(i > 0, i + " is not a positive long");
        }

        /**
         * Assert that <code>i</code> is less than zero
         */
        public static void negative(int i) {
                isTrue(i < 0, i + " is not a negative integer");
        }

        /**
         * Assert that <code>i</code> is zero
         */
        public static void zero(int i) {
                isTrue(i == 0, i + " is not zero");
        }

        public static void exists(String location) {
                exists(location, "[" + location + "] does not exist");
        }

        public static void exists(String location, String message) {
                isTrue(LocationUtils.exists(location), message);
        }

        public static void isExistingDir(File dir) {
                isExistingDir(dir, "[" + dir + "] is not an existing directory");
        }

        public static void isExistingDir(File dir, String message) {
                exists(dir, message);
                isTrue(dir.isDirectory(), message);
        }

        public static void exists(File file) {
                exists(file, "[" + file + "] does not exist");
        }

        public static void exists(File file, String message) {
                isTrue(file.exists(), message);
        }

        public static void isOdd(int i) {
                isOdd(i, "[" + i + "] is not an odd number");
        }

        public static void isOdd(int i, String message) {
                isTrue(i % 2 != 0, message);
        }

        public static void isEven(int i) {
                isEven(i, "[" + i + "] is not an even number");
        }

        public static void isEven(int i, String message) {
                isTrue(i % 2 == 0, message);
        }

        public static void isFalse(boolean condition) {
                isTrue(!condition);
        }

        public static void isFalse(boolean condition, String message) {
                isTrue(!condition, message);
        }

        public static void notBlank(String string) {
                isFalse(StringUtils.isBlank(string));
        }

        public static void noBlanks(String... strings) {
                noBlanksWithMsg(NO_BLANKS, strings);
        }

        public static void present(Optional<?>... optionals) {
                for (Optional<?> optional : optionals) {
                        Assert.isTrue(optional.isPresent(), "Optional is required");
                }
        }

        /**
         * Assert that if the optional string is present it is not blank
         */
        public static void noBlanks(Optional<String> string) {
                noBlankOptionals(ImmutableList.of(string));
        }

        public static void noBlanks(Optional<String> s1, Optional<String> s2) {
                noBlankOptionals(ImmutableList.of(s1, s2));
        }

        public static void noBlanks(Optional<String> s1, Optional<String> s2, Optional<String> s3) {
                noBlankOptionals(ImmutableList.of(s1, s2, s3));
        }

        public static void noBlanks(Optional<String> s1, Optional<String> s2, Optional<String> s3, Optional<String> s4) {
                noBlankOptionals(ImmutableList.of(s1, s2, s3, s4));
        }

        public static void noBlankOptionals(List<Optional<String>> optionals) {
                for (Optional<String> optional : optionals) {
                        if (optional.isPresent()) {
                                noBlanks(optional.get());
                        }
                }
        }

        /**
         * @deprecated Use noBlankOptionals instead
         * @see noBlankOptionals
         */
        @Deprecated
        public static void noBlanksIfPresent(Optional<String>... optionals) {
                for (Optional<String> optional : optionals) {
                        if (optional.isPresent()) {
                                noBlanks(optional.get());
                        }
                }
        }

        /**
         * Assert that <code>strings</code> is not null and that none of the elements are blank
         */
        public static void noBlanks(List<String> strings) {
                Assert.noNulls(strings);
                for (String string : strings) {
                        noBlanksWithMsg(NO_BLANKS, string);
                }
        }

        public static void noNullStrings(String... strings) {
                notNull((Object) strings);
                for (String string : strings) {
                        notNull(string, NO_NULLS);
                }
        }

        public static void noNulls(Object... objects) {
                noNullsWithMsg(NO_NULLS, objects);
        }

        public static void noNullsWithMsg(String msg, Object... objects) {
                for (Object object : objects) {
                        notNull(object, msg);
                }
        }

        public static void noBlanksWithMsg(String msg, String... strings) {
                for (String string : strings) {
                        isFalse(StringUtils.isBlank(string), msg);
                }
        }

        @Deprecated
        public static void notNull(Object... objects) {
                for (Object object : objects) {
                        notNull(object);
                }
        }

        @Deprecated
        public static void notBlank(String... strings) {
                noBlanksWithMsg(NO_BLANKS, strings);
        }

        @Deprecated
        public static void noNulls(String msg, Object... objects) {
                for (Object object : objects) {
                        notNull(object, msg);
                }
        }

}