/**
 * Copyright (c) 2008, http://www.snakeyaml.org
 *
 * Licensed under the Apache 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.apache.org/licenses/LICENSE-2.0
 *
 * 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.yaml.snakeyaml.issues.issue306;

import org.junit.Test;
import org.yaml.snakeyaml.DumperOptions;
import org.yaml.snakeyaml.Util;
import org.yaml.snakeyaml.Yaml;
import org.yaml.snakeyaml.nodes.Tag;

import java.util.UUID;
import java.util.regex.Pattern;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;

public class UuidSupportTest {

    public static final Pattern UUID_PATTERN = Pattern
            .compile("^(?:\\p{XDigit}{8}-\\p{XDigit}{4}-\\p{XDigit}{4}-\\p{XDigit}{4}-\\p{XDigit}{12})$");
    public static final Tag UUID_TAG = new Tag(Tag.PREFIX + "java.util.UUID");

    @Test
    public void pattern() {
        assertTrue(UUID_PATTERN.matcher("7f511847-781a-45df-9c8d-1e32e028b9b3").matches());
        assertTrue(UUID_PATTERN.matcher("AC4877BE-0C31-4458-A86E-0272EFE1AAA8").matches());
    }

    @Test
    public void dumpAsString() {
        UUID uuid = UUID.randomUUID();
        String str = uuid.toString();
        Yaml yaml = new Yaml();
        yaml.addImplicitResolver(UUID_TAG, UUID_PATTERN, null);
        String output = yaml.dump(str);
        assertEquals("'" + str + "'\n", output);
        assertEquals(str + "\n", yaml.dump(uuid));
    }

    @Test
    public void loadAsUuid() {
        Yaml yaml = new Yaml();
        yaml.addImplicitResolver(UUID_TAG, UUID_PATTERN, null);
        UUID uuid = (UUID) yaml.load("7f511847-781a-45df-9c8d-1e32e028b9b3");
        assertEquals("7f511847-781a-45df-9c8d-1e32e028b9b3", uuid.toString());
    }

    @Test
    public void loadFromBean() {
        String input = Util.getLocalResource("issues/issue306-1.yaml");
        Yaml yaml = new Yaml();
        BeanWithId bean = yaml.loadAs(input, BeanWithId.class);
        assertEquals("7f511847-781a-45df-9c8d-1e32e028b9b3", bean.getId().toString());
    }

    @Test
    public void dumpUuid() {
        UUID uuid = UUID.randomUUID();
        Yaml yaml = new Yaml();
        String output = yaml.dump(uuid);
        assertEquals("!!java.util.UUID '" + uuid.toString() + "'\n", output);
    }

    @Test
    public void dumpBean() {
        BeanWithId bean = new BeanWithId();
        bean.setValue(3);
        UUID uuid = UUID.fromString("ac4877be-0c31-4458-a86e-0272efe1aaa8");
        bean.setId(uuid);
        Yaml yaml = new Yaml();
        String output = yaml.dumpAs(bean, Tag.MAP, DumperOptions.FlowStyle.BLOCK);
        String expected = Util.getLocalResource("issues/issue306-2.yaml");
        assertEquals(expected, output);
    }
}