/**
 * Copyright (c) 2008, SnakeYAML
 *
 * 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.types;

import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.Map;
import org.yaml.snakeyaml.DumperOptions;
import org.yaml.snakeyaml.DumperOptions.FlowStyle;
import org.yaml.snakeyaml.Yaml;
import org.yaml.snakeyaml.nodes.Node;
import org.yaml.snakeyaml.nodes.Tag;
import org.yaml.snakeyaml.representer.Represent;
import org.yaml.snakeyaml.representer.Representer;

/**
 * @see <a href="http://yaml.org/type/bool.html">bool</a>
 */
public class BoolTagTest extends AbstractTest {

  public void testBool() {
    assertEquals(Boolean.TRUE, getMapValue("canonical: true", "canonical"));
    assertEquals(Boolean.FALSE, getMapValue("answer: NO", "answer"));
    assertEquals(Boolean.TRUE, getMapValue("logical: True", "logical"));
    assertEquals(Boolean.TRUE, getMapValue("option: on", "option"));
  }

  public void testBoolCanonical() {
    assertEquals(Boolean.TRUE, getMapValue("canonical: Yes", "canonical"));
    assertEquals(Boolean.TRUE, getMapValue("canonical: yes", "canonical"));
    assertEquals(Boolean.TRUE, getMapValue("canonical: YES", "canonical"));
    assertEquals("yES", getMapValue("canonical: yES", "canonical"));
    assertEquals(Boolean.FALSE, getMapValue("canonical: No", "canonical"));
    assertEquals(Boolean.FALSE, getMapValue("canonical: NO", "canonical"));
    assertEquals(Boolean.FALSE, getMapValue("canonical: no", "canonical"));
    assertEquals(Boolean.FALSE, getMapValue("canonical: off", "canonical"));
    assertEquals(Boolean.FALSE, getMapValue("canonical: Off", "canonical"));
    assertEquals(Boolean.FALSE, getMapValue("canonical: OFF", "canonical"));
    assertEquals(Boolean.TRUE, getMapValue("canonical: ON", "canonical"));
    assertEquals(Boolean.TRUE, getMapValue("canonical: On", "canonical"));
    assertEquals(Boolean.TRUE, getMapValue("canonical: on", "canonical"));
    // it looks like it is against the specification but it is like in
    // PyYAML
    assertEquals("n", getMapValue("canonical: n", "canonical"));
    assertEquals("N", getMapValue("canonical: N", "canonical"));
    assertEquals("y", getMapValue("canonical: y", "canonical"));
    assertEquals("Y", getMapValue("canonical: Y", "canonical"));
  }

  public void testBoolShorthand() {
    assertEquals(Boolean.TRUE, getMapValue("boolean: !!bool true", "boolean"));
  }

  public void testBoolTag() {
    assertEquals(Boolean.TRUE, getMapValue("boolean: !<tag:yaml.org,2002:bool> true", "boolean"));
  }

  public void testBoolOut() {
    Map<String, Boolean> map = new HashMap<String, Boolean>();
    map.put("boolean", Boolean.TRUE);
    String output = dump(map);
    assertTrue(output, output.contains("boolean: true"));
  }

  public void testBoolOutAsYes() {
    Yaml yaml = new Yaml(new BoolRepresenter("YES"));
    String output = yaml.dump(true);
    assertEquals("YES\n", output);
  }

  /**
   * test flow style
   */
  public void testBoolOutAsEmpty2() {
    Yaml yaml = new Yaml(new BoolRepresenter("on"));
    Map<String, Boolean> map = new LinkedHashMap<String, Boolean>();
    map.put("aaa", false);
    map.put("bbb", true);
    String output = yaml.dump(map);
    assertEquals("{aaa: false, bbb: on}\n", output);
  }

  /**
   * test block style
   */
  public void testBoolOutAsEmpty3() {
    DumperOptions options = new DumperOptions();
    options.setDefaultFlowStyle(FlowStyle.BLOCK);
    Yaml yaml = new Yaml(new BoolRepresenter("True"), options);
    Map<String, Boolean> map = new LinkedHashMap<String, Boolean>();
    map.put("aaa", false);
    map.put("bbb", true);
    String output = yaml.dump(map);
    assertEquals("aaa: false\nbbb: True\n", output);
  }

  private class BoolRepresenter extends Representer {

    private final String value;

    public BoolRepresenter(String value) {
      super(new DumperOptions());
      this.value = value;
      this.representers.put(Boolean.class, new RepresentBool());
    }

    // possible values are here http://yaml.org/type/bool.html
    // y, Y, n, N should not be used
    private class RepresentBool implements Represent {

      public Node representData(Object data) {
        String v;
        if (Boolean.TRUE.equals(data)) {
          v = value;
        } else {
          v = "false";
        }
        return representScalar(Tag.BOOL, v);
      }
    }
  }
}
