/*
    * JavaBean Tester (https://github.com/hazendaz/javabean-tester)
    *
    * Copyright 2012-2024 Hazendaz.
    *
    * All rights reserved. This program and the accompanying materials
    * are made available under the terms of The Apache Software License,
    * Version 2.0 which accompanies this distribution, and is available at
    * http://www.apache.org/licenses/LICENSE-2.0.txt
   *
   * Contributors:
   *     CodeBox (Rob Dawson).
   *     Hazendaz (Jeremy Landis).
   */
  package com.codebox.bean;
  
  import com.codebox.enums.LoadData;
  import com.codebox.enums.LoadType;
  import com.codebox.instance.ClassInstance;
  import com.codebox.instance.ConstructorInstance;
  
  import java.lang.reflect.Array;
  import java.lang.reflect.Constructor;
  import java.lang.reflect.Field;
  import java.math.BigDecimal;
  import java.time.Instant;
  import java.time.LocalDate;
  import java.time.LocalDateTime;
  import java.time.LocalTime;
  import java.time.OffsetDateTime;
  import java.time.ZoneId;
  import java.time.ZoneOffset;
  import java.time.ZonedDateTime;
  import java.util.ArrayList;
  import java.util.Arrays;
  import java.util.Date;
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  import java.util.Set;
  import java.util.TreeSet;
  import java.util.UUID;
  import java.util.concurrent.ConcurrentHashMap;
  import java.util.concurrent.ConcurrentMap;
  
  import lombok.Data;
  
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  /**
   * Value Builder Builds values from given type.
   */
  @Data
  public class ValueBuilder {
  
      /** The Constant Logger. */
      private static final Logger logger = LoggerFactory.getLogger(ValueBuilder.class);
  
      /** The load data. */
      private LoadData loadData;
  
      /**
       * Builds the value.
       *
       * @param <T>
       *            the generic type
       * @param clazz
       *            the clazz
       * @param loadType
       *            the load type
       *
       * @return the object
       */
      public <T> Object buildValue(final Class<T> clazz, final LoadType loadType) {
          // Next check for a no-arg constructor
          final Constructor<?>[] ctrs = clazz.getConstructors();
          for (final Constructor<?> ctr : ctrs) {
              if (ctr.getParameterTypes().length == 0 && clazz != String.class) {
                  if (this.loadData == LoadData.ON && !containsSelf(clazz)) {
                      // Load Underlying Data to deeply test when it doesn't contain self
                      final JavaBeanTesterWorker<T, Object> beanTesterWorker = new JavaBeanTesterWorker<>(clazz);
                      beanTesterWorker.setLoadData(this.loadData);
                      beanTesterWorker.getterSetterTests(new ClassInstance<T>().newInstance(clazz));
                      return null;
                  }
                  // The class has a no-arg constructor, so just call it
                  return ConstructorInstance.newInstance(ctr);
              }
          }
  
          // Specific rules for common classes
          Object returnObject = null;
          switch (loadType) {
              case ALTERNATE_DATA:
                  returnObject = ValueBuilder.setAlternateValues(clazz);
                  break;
              case NULL_DATA:
                  returnObject = ValueBuilder.setNullValues(clazz);
                 break;
             case STANDARD_DATA:
             default:
                 returnObject = ValueBuilder.setStandardValues(clazz);
                 break;
         }
 
         if (returnObject != null || loadType == LoadType.NULL_DATA) {
             return returnObject;
         }
 
         if (clazz.isAssignableFrom(BigDecimal.class)) {
             return BigDecimal.ONE;
         }
 
         if (clazz.isAssignableFrom(UUID.class)) {
             return UUID.fromString("00000000-0000-0000-0000-000123456789");
         }
 
         if (clazz.isAssignableFrom(Instant.class)) {
             return Instant.ofEpochSecond(1L);
         }
 
         if (clazz.isAssignableFrom(List.class)) {
             return new ArrayList<>();
         }
 
         if (clazz.isAssignableFrom(Map.class)) {
             return new HashMap<>();
         }
 
         if (clazz.isAssignableFrom(ConcurrentMap.class)) {
             return new ConcurrentHashMap<>();
         }
 
         if (clazz.isAssignableFrom(Set.class)) {
             return new TreeSet<>();
         }
 
         if (clazz.isAssignableFrom(Date.class)) {
             return new Date();
         }
 
         if (clazz.isAssignableFrom(LocalDate.class)) {
             return LocalDate.now();
         }
 
         if (clazz.isAssignableFrom(LocalDateTime.class)) {
             return LocalDateTime.of(2000, 10, 1, 0, 0);
         }
 
         if (clazz.isAssignableFrom(LocalTime.class)) {
             return LocalTime.of(0, 0);
         }
 
         if (clazz.isAssignableFrom(OffsetDateTime.class)) {
             return OffsetDateTime.of(2000, 10, 1, 0, 0, 0, 0, ZoneOffset.MIN);
         }
 
         if (clazz.isAssignableFrom(ZonedDateTime.class)) {
             return ZonedDateTime.of(LocalDateTime.of(2020, 11, 16, 10, 26, 00, 01), ZoneId.of("UTC"));
         }
 
         if (clazz == Logger.class) {
             return LoggerFactory.getLogger(clazz);
         }
 
         if (clazz.isEnum()) {
             return clazz.getEnumConstants()[0];
         }
 
         // XXX Add additional rules here
 
         // XXX Don't fail this...until alternative solution is determined
         ValueBuilder.logger.warn(
                 "Unable to build value for class '{}', please raise ticket with JavaBeanTester for desired support.",
                 clazz.getName());
         return null;
     }
 
     /**
      * Set using alternate test values.
      *
      * @param <T>
      *            the type parameter associated with the class under test.
      * @param clazz
      *            the class under test.
      *
      * @return Object the Object to use for test.
      */
     private static <T> Object setAlternateValues(final Class<T> clazz) {
         return ValueBuilder.setValues(clazz, "ALT_VALUE", 1, Boolean.FALSE, Integer.valueOf(2), Long.valueOf(2),
                 Double.valueOf(2.0), Float.valueOf(2.0F), Character.valueOf('N'), Byte.valueOf((byte) 2));
     }
 
     /**
      * Set using null test values.
      *
      * @param <T>
      *            the type parameter associated with the class under test.
      * @param clazz
      *            the class under test.
      *
      * @return Object the Object to use for test.
      */
     private static <T> Object setNullValues(final Class<T> clazz) {
         return ValueBuilder.setValues(clazz, null, 0, null, null, null, null, null, null, null);
     }
 
     /**
      * Set using standard test values.
      *
      * @param <T>
      *            the type parameter associated with the class under test.
      * @param clazz
      *            the class under test.
      *
      * @return Object the Object to use for test.
      */
     private static <T> Object setStandardValues(final Class<T> clazz) {
         return ValueBuilder.setValues(clazz, "TEST_VALUE", 1, Boolean.TRUE, Integer.valueOf(1), Long.valueOf(1),
                 Double.valueOf(1.0), Float.valueOf(1.0F), Character.valueOf('Y'), Byte.valueOf((byte) 1));
     }
 
     /**
      * Set Values for object.
      *
      * @param <T>
      *            the type parameter associated with the class under test.
      * @param clazz
      *            the class instance under test.
      * @param string
      *            value of string object.
      * @param arrayLength
      *            amount of array objects to create.
      * @param booleanValue
      *            value of boolean object.
      * @param integerValue
      *            value of integer object.
      * @param longValue
      *            value of long object.
      * @param doubleValue
      *            value of double object.
      * @param floatValue
      *            value of float object.
      * @param characterValue
      *            value of character object.
      * @param byteValue
      *            value of character object.
      *
      * @return Object value determined by input class. If not found, returns null.
      */
     private static <T> Object setValues(final Class<T> clazz, final String string, final int arrayLength,
             final Boolean booleanValue, final Integer integerValue, final Long longValue, final Double doubleValue,
             final Float floatValue, final Character characterValue, final Byte byteValue) {
         if (clazz == String.class) {
             return string;
         }
         if (clazz.isArray()) {
             return Array.newInstance(clazz.getComponentType(), arrayLength);
         }
         if (clazz == boolean.class || clazz == Boolean.class) {
             return ValueBuilder.initializeBoolean(clazz, booleanValue);
         }
         if (clazz == int.class || clazz == Integer.class) {
             return ValueBuilder.initializeInteger(clazz, integerValue);
         }
         if (clazz == long.class || clazz == Long.class) {
             return ValueBuilder.initializeLong(clazz, longValue);
         }
         if (clazz == double.class || clazz == Double.class) {
             return ValueBuilder.initializeDouble(clazz, doubleValue);
         }
         if (clazz == float.class || clazz == Float.class) {
             return ValueBuilder.initializeFloat(clazz, floatValue);
         }
         if (clazz == char.class || clazz == Character.class) {
             return ValueBuilder.initializeCharacter(clazz, characterValue);
         }
         if (clazz == byte.class || clazz == Byte.class) {
             return ValueBuilder.initializeByte(clazz, byteValue);
         }
         return null;
     }
 
     /**
      * Initialize boolean.
      *
      * @param <T>
      *            the generic type
      * @param clazz
      *            the clazz
      * @param booleanValue
      *            the boolean value
      *
      * @return the object
      */
     private static <T> Object initializeBoolean(final Class<T> clazz, final Boolean booleanValue) {
         if (clazz == boolean.class && booleanValue == null) {
             return Boolean.FALSE;
         }
         return booleanValue;
     }
 
     /**
      * Initialize integer.
      *
      * @param <T>
      *            the generic type
      * @param clazz
      *            the clazz
      * @param integerValue
      *            the integer value
      *
      * @return the object
      */
     private static <T> Object initializeInteger(final Class<T> clazz, final Integer integerValue) {
         if (clazz == int.class && integerValue == null) {
             return Integer.valueOf(-1);
         }
         return integerValue;
     }
 
     /**
      * Initialize long.
      *
      * @param <T>
      *            the generic type
      * @param clazz
      *            the clazz
      * @param longValue
      *            the long value
      *
      * @return the object
      */
     private static <T> Object initializeLong(final Class<T> clazz, final Long longValue) {
         if (clazz == long.class && longValue == null) {
             return Long.valueOf(-1);
         }
         return longValue;
     }
 
     /**
      * Initialize double.
      *
      * @param <T>
      *            the generic type
      * @param clazz
      *            the clazz
      * @param doubleValue
      *            the double value
      *
      * @return the object
      */
     private static <T> Object initializeDouble(final Class<T> clazz, final Double doubleValue) {
         if (clazz == double.class && doubleValue == null) {
             return Double.valueOf(-1.0);
         }
         return doubleValue;
     }
 
     /**
      * Initialize float.
      *
      * @param <T>
      *            the generic type
      * @param clazz
      *            the clazz
      * @param floatValue
      *            the float value
      *
      * @return the object
      */
     private static <T> Object initializeFloat(final Class<T> clazz, final Float floatValue) {
         if (clazz == float.class && floatValue == null) {
             return Float.valueOf(-1.0F);
         }
         return floatValue;
     }
 
     /**
      * Initialize character.
      *
      * @param <T>
      *            the generic type
      * @param clazz
      *            the clazz
      * @param characterValue
      *            the character value
      *
      * @return the object
      */
     private static <T> Object initializeCharacter(final Class<T> clazz, final Character characterValue) {
         if (clazz == char.class && characterValue == null) {
             return Character.valueOf('\u0000');
         }
         return characterValue;
     }
 
     /**
      * Initialize byte.
      *
      * @param <T>
      *            the generic type
      * @param clazz
      *            the clazz
      * @param byteValue
      *            the byte value
      *
      * @return the object
      */
     private static <T> Object initializeByte(final Class<T> clazz, final Byte byteValue) {
         if (clazz == byte.class && byteValue == null) {
             return Byte.valueOf((byte) -1);
         }
         return byteValue;
     }
 
     /**
      * Contains self.
      *
      * @param <T>
      *            the generic type
      * @param clazz
      *            the clazz
      * @return true, if successful
      */
     private <T> boolean containsSelf(final Class<T> clazz) {
         final List<Field> fields = Arrays.asList(clazz.getDeclaredFields());
         for (Field field : fields) {
             if (field.getType().equals(clazz)) {
                 return true;
             }
         }
         return false;
     }
 
 }