package org.apache.ibatis.reflection.wrapper;

import java.util.HashMap;
import java.util.Map;

import org.apache.ibatis.reflection.MetaObject;
import org.apache.ibatis.reflection.factory.ObjectFactory;
import org.apache.ibatis.reflection.property.PropertyTokenizer;

public class MapWrapper extends BaseWrapper {

  private Map map;

  public MapWrapper(MetaObject metaObject, Map map) {
    super(metaObject);
    this.map = map;
  }

  public Object get(PropertyTokenizer prop) {
    if (prop.getIndex() != null) {
      Object collection = resolveCollection(prop, map);
      return getCollectionValue(prop, collection);
    } else {
      return map.get(prop.getName());
    }
  }

  public void set(PropertyTokenizer prop, Object value) {
    if (prop.getIndex() != null) {
      Object collection = resolveCollection(prop, map);
      setCollectionValue(prop, collection, value);
    } else {
      map.put(prop.getName(), value);
    }
  }

  public String findProperty(String name, boolean useCamelCaseMapping) {
    return name;
  }

  public String[] getGetterNames() {
    return (String[]) map.keySet().toArray(new String[map.keySet().size()]);
  }

  public String[] getSetterNames() {
    return (String[]) map.keySet().toArray(new String[map.keySet().size()]);
  }

  public Class getSetterType(String name) {
    PropertyTokenizer prop = new PropertyTokenizer(name);
    if (prop.hasNext()) {
      MetaObject metaValue = metaObject.metaObjectForProperty(prop.getIndexedName());
      if (metaValue == MetaObject.NULL_META_OBJECT) {
        return Object.class;
      } else {
        return metaValue.getSetterType(prop.getChildren());
      }
    } else {
      if (map.get(name) != null) {
        return map.get(name).getClass();
      } else {
        return Object.class;
      }
    }
  }

  public Class getGetterType(String name) {
    PropertyTokenizer prop = new PropertyTokenizer(name);
    if (prop.hasNext()) {
      MetaObject metaValue = metaObject.metaObjectForProperty(prop.getIndexedName());
      if (metaValue == MetaObject.NULL_META_OBJECT) {
        return Object.class;
      } else {
        return metaValue.getGetterType(prop.getChildren());
      }
    } else {
      if (map.get(name) != null) {
        return map.get(name).getClass();
      } else {
        return Object.class;
      }
    }
  }

  public boolean hasSetter(String name) {
    return true;
  }

  public boolean hasGetter(String name) {
    PropertyTokenizer prop = new PropertyTokenizer(name);
    if (prop.hasNext()) {
      if (map.containsKey(prop.getIndexedName())) {
        MetaObject metaValue = metaObject.metaObjectForProperty(prop.getIndexedName());
        if (metaValue == MetaObject.NULL_META_OBJECT) {
          return map.containsKey(name);
        } else {
          return metaValue.hasGetter(prop.getChildren());
        }
      } else {
        return false;
      }
    } else {
      return map.containsKey(name);
    }
  }

  public MetaObject instantiatePropertyValue(String name, PropertyTokenizer prop, ObjectFactory objectFactory) {
    HashMap map = new HashMap();
    set(prop, map);
    return MetaObject.forObject(map, metaObject.getObjectFactory(), metaObject.getObjectWrapperFactory());
  }

}
