package com.atlassian.asap.nimbus.serializer;
   
   import net.minidev.json.JSONArray;
   import net.minidev.json.JSONObject;
   
   import javax.json.JsonArray;
   import javax.json.JsonNumber;
   import javax.json.JsonObject;
   import javax.json.JsonString;
  import javax.json.JsonValue;
  import java.util.Map;
  
  /**
   * Translates JSR 353 objects into the Nimbus (net.minidev.json) representation.
   */
  class Jsr353NimbusTranslator {
      static Object jsr353ToNimbus(JsonValue jsonValue) {
          switch (jsonValue.getValueType()) {
              case NULL:
                  return null;
              case STRING:
                  return ((JsonString) jsonValue).getString();
              case NUMBER:
                  return convertNumber((JsonNumber) jsonValue);
              case TRUE:
                  return Boolean.TRUE;
              case FALSE:
                  return Boolean.FALSE;
              case ARRAY:
                  return convertArray((JsonArray) jsonValue);
              case OBJECT:
                  return convertObject((JsonObject) jsonValue);
              default:
                  throw new IllegalStateException("Broken JSON");
          }
      }
  
      private static Object convertNumber(JsonNumber jsonNumber) {
          // Do not use the ternary operator. Type inference gets horribly confused and always returns Double.
          if (jsonNumber.isIntegral()) {
              return jsonNumber.longValueExact();  // won't work for big integers
          } else {
              return jsonNumber.doubleValue();
          }
      }
  
      private static Object convertArray(JsonArray jsonValue) {
          JSONArray nimbusArray = new JSONArray();
          for (JsonValue arrayElement : jsonValue) {
              nimbusArray.add(jsr353ToNimbus(arrayElement));
          }
          return nimbusArray;
      }
  
      private static Object convertObject(JsonObject jsonValue) {
          JSONObject nimbusObject = new JSONObject();
          for (Map.Entry<String, JsonValue> entry : jsonValue.entrySet()) {
              nimbusObject.put(entry.getKey(), jsr353ToNimbus(entry.getValue()));
          }
          return nimbusObject;
      }
  }