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package org.apache.juneau.examples.core.json;

import org.apache.juneau.examples.core.pojo.*;
import org.apache.juneau.json.JsonParser;
import org.apache.juneau.json.JsonSerializer;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;

/**
 * Sample class which shows the complex usage of JsonSerializer and JsonParser.
 *
 * <h5 class='section'>See Also:</h5><ul>
 * </ul>
 */
public class JsonComplexExample {

   /**
    * Serializing PojoComplex bean into Json type
    * and Deserialize back to PojoComplex instance type.
    *
    * @param args Unused.
    * @throws Exception Unused.
    */
   public static void main(String[] args) throws Exception{
      // Juneau provides static constants with the most commonly used configurations
      // Get a reference to a serializer - converting POJO to flat format
      /**
       * Produces
       * {"innerPojo":{"name":"name0","id":"1.0"},
       * "values":{"setOne":[{"name":"name1","id":"1.1"},{"name":"name2","id":"1.1"}],
       * "setTwo":[{"name":"name1","id":"1.2"},{"name":"name2","id":"1.2"}]},"id":"pojo"}
       */
      JsonSerializer jsonSerializer = JsonSerializer.DEFAULT;
      // Get a reference to a parser - converts that flat format back into the POJO
      JsonParser jsonParser = JsonParser.DEFAULT;

      // Fill some data to a PojoComplex bean
      HashMap<String, List<Pojo>> values = new HashMap<>();
      ArrayList<Pojo> setOne = new ArrayList<>();
      setOne.add(new Pojo("1.1", "name1"));
      setOne.add(new Pojo("1.1", "name2"));
      ArrayList<Pojo> setTwo = new ArrayList<>();
      setTwo.add(new Pojo("1.2", "name1"));
      setTwo.add(new Pojo("1.2", "name2"));
      values.put("setOne", setOne);
      values.put("setTwo", setTwo);
      PojoComplex pojoc = new PojoComplex("pojo", new Pojo("1.0", "name0"), values);

      String flat = jsonSerializer.serialize(pojoc);

      // Print out the created POJO in JSON format.
      System.out.println(flat);

      PojoComplex parse = jsonParser.parse(flat, PojoComplex.class);

      assert parse.getId().equals(pojoc.getId());
      assert parse.getInnerPojo().getName().equals(pojoc.getInnerPojo().getName());
      assert parse.getInnerPojo().getId().equals(pojoc.getInnerPojo().getId());

      // The object above can be parsed thanks to the @Beanc(properties = id,name) annotation on Pojo
      // Using this approach, you can keep your POJOs immutable, and still serialize and deserialize them.
   }
}