#pragma once
/////////////////////////////////////////////////////////////////////////
// ClassAdapter.h - Declarations for Skeleton Class Adapter Components //
//                                                                     //
// Jim Fawcett, CSE776 - Design Patterns, Fall 2014                    //
/////////////////////////////////////////////////////////////////////////

#include <string>

// primary Target Hierarchy

struct Target
{
  virtual ~Target() {}
  virtual std::string doTargetOperation() = 0;
};

class TargetImpl : public Target
{
public:
  static Target* create() { return new TargetImpl; }
  virtual std::string doTargetOperation() { return "\n    TargetImpl here"; }
};

// secondary Adaptee Hierarchy

struct Adaptee
{
  virtual ~Adaptee() {}
  virtual std::string doAdapteeOperation() = 0;
};

class AdapteeImpl : public Adaptee
{
public:
  static Adaptee* create() { return new AdapteeImpl; }

  virtual std::string doAdapteeOperation() override
  {
    return "\n    adapteeImpl here";
  }
};

// pulling AdapteeImpl into Target Hierarchy with Class Adapter

class ClassAdapter : public Target, private AdapteeImpl
{
public:
  static Target* create() { return new ClassAdapter; }

  ClassAdapter() 
  {
    // may need to do stuff here
  };
  virtual ~ClassAdapter() {}
  virtual std::string doTargetOperation() override
  {
    return std::string("\n  Class Adapter using Adaptee:") + doAdapteeOperation();  // inherited from AdapteeImpl
  }
};

class Factory
{
public:
  static Target* create(int i)
  {
    switch (i)
    {
    case 0: return TargetImpl::create(); break;
    case 1: return ClassAdapter::create(); break;
    default:
      return nullptr;
    }
  }
};