namespace lasd {

/* ************************************************************************** */

// Specific constructors
template <typename Data>
List<Data>::Node::Node(const Data& newValue){
  value = newValue;
  next = nullptr;
}

// Copy constructor
template <typename Data>
List<Data>::Node::Node(const Node& copyFrom){
  value = copyFrom.value;
  next = nullptr;
}

// Move constructor
template <typename Data>
List<Data>::Node::Node(Node&& moveFrom){
  std::swap(value, moveFrom.value);
  std::swap(next, moveFrom.next);
}

template <typename Data>
List<Data>::Node::Node(Data&& moveFrom){
  std::swap(value, moveFrom);
}


// Comparison operator
template <typename Data>
bool List<Data>::Node::operator==(const Node& node)const noexcept{
  return (node.value == value);
}


template <typename Data>
bool List<Data>::Node::operator!=(const Node& node)const noexcept{
  return !(*this == node);
}


// Specific constructor
template <typename Data>
List<Data>::List(const LinearContainer<Data>& con){
  for(ulong i = 0; i<con.Size(); ++i){
    InsertAtBack(con[i]);
    }
}

// Copy constructor
template <typename Data>
List<Data>::List(const List<Data>& copyFrom){
  for(ulong i = 0; i<copyFrom.Size(); ++i){
    InsertAtBack(copyFrom[i]);
    }
}

// Move constructor
template <typename Data>
List<Data>::List(List<Data>&& moveFrom){
  std::swap(size, moveFrom.size);
  std::swap(head, moveFrom.head);
  std::swap(tail, moveFrom.tail);
}

template <typename Data>
List<Data>::~List(){
  Clear();
}

// Copy assignment
template <typename Data>
 List<Data>& List<Data>::operator=(const List<Data>& copyFrom){
 if(*this != copyFrom){
   Clear();
   for(ulong i = 0; i<copyFrom.Size(); ++i){
     InsertAtBack(copyFrom[i]);
     }
   }
   return *this;
 }

 //Move assignment
 template <typename Data>
 List<Data>& List<Data>::operator=(List<Data>&& moveFrom)noexcept{
   if(*this != moveFrom){
     std::swap(size, moveFrom.size);
     std::swap(head, moveFrom.head);
     std::swap(tail, moveFrom.tail);
  }
  return *this;
 }

 //Comparison operators
 template <typename Data>
 bool List<Data>::operator==(const List<Data>& list) const noexcept{
   if(this->size != list.Size()) return false;
   for(ulong i = 0; i < (this->size); ++i){
     if((*this)[i] != list[i]) return false;
   }
   return true;
 }

template <typename Data>
bool List<Data>::operator!=(const List<Data>& list) const noexcept{
  return !(*this==list);
}

// Specific member functions

 template <typename Data>
 void List<Data>::InsertAtFront(const Data& data){
   struct Node* tmp = new Node(data);
   tmp->next = head;
   head =tmp;
   size++;

   if(size == 1){
      tail = head;
    }
 }


  template <typename Data>
  void List<Data>::InsertAtFront(Data&& data){
    struct Node* tmp = new Node(data);
    tmp->next = head;
    head =tmp;
    size++;

    if(size == 1){
       tail = head;
     }
  }

  template <typename Data>
  void List<Data>::RemoveFromFront(){
    if(head == nullptr){
      throw std::length_error("List is empty!");
    }
    else{
      struct Node* tmp = head;
      head = head->next;
      tmp->next = nullptr;
      delete tmp;
      size--;

      if(head==nullptr){
        tail=nullptr;
      }
    }
  }

  template <typename Data>
  Data List<Data>::FrontNRemove(){
    if(head == nullptr){
      throw std::length_error("List is empty!");
    }
    else{
      Data value = head->value;
      RemoveFromFront();
      return value;
    }
  }

  template <typename Data>
  void List<Data>::InsertAtBack(const Data& data){
    if(size == 0){
      InsertAtFront(data);
    }
    else{
      struct Node* last = new Node(data);
      tail->next = last;
      tail = last;
      size++;
    }
  }

  template <typename Data>
  void List<Data>::InsertAtBack(Data&& data){
    if(size == 0){
      InsertAtFront(data);
    }
    else{
      struct Node* last = new Node(data);
      tail->next = last;
      tail = last;
      size++;
    }
  }

  template <typename Data>
  void List<Data>::Clear(){
    while(head != nullptr){
      RemoveFromFront();
    }
  }

  template <typename Data>
  Data& List<Data>::Front() const{
    if(size == 0){
      throw std::length_error("List is empty!");
    }else{
      return head->value;
    }
  }

  template <typename Data>
  Data& List<Data>::Back() const{
    if(size == 0){
      throw std::length_error("List is empty!");
    }else{
      return tail->value;
    }
  }

  template <typename Data>
  Data& List<Data>::operator[](const ulong idx) const{
    if(idx >= size || idx < 0){
      throw std::out_of_range("Out of Range!");
    }else
    {
      struct Node* tmp = head;
      for(ulong i=0; i<idx; ++i){
        tmp = tmp->next;
      }
      return tmp->value;
    }
  }


  template <typename Data>
     void List<Data>::MapPreOrder(MapFunctor function, void* par){
       MapPreOrder(function, par, head);
     }

     template <typename Data>
     void List<Data>::MapPostOrder(MapFunctor function, void* par){
       MapPostOrder(function, par, head);
     }

     template <typename Data>
     void List<Data>::FoldPreOrder(FoldFunctor function, const void* constPar, void* par) const{
       FoldPreOrder(function, constPar, par, head);
     }

     template <typename Data>
     void List<Data>::FoldPostOrder(FoldFunctor function, const void* constPar, void* par) const{
       FoldPostOrder(function, constPar, par, head);
     }

     //OVERLOAD Accessory Function

     template <typename Data>
     void List<Data>::MapPreOrder(MapFunctor function, void* par, struct Node* node){
       if(node == nullptr)
         return;

       function(node->value, par);
       MapPreOrder(function, par, node->next);
     }

     template <typename Data>
     void List<Data>::MapPostOrder(MapFunctor function, void* par, struct Node* node){
       if(node == nullptr)
         return;

       MapPostOrder(function, par, node->next);
       function(node->value, par);
     }

     template <typename Data>
     void List<Data>::FoldPreOrder(FoldFunctor function, const void* constPar, void* par, struct Node* node) const{

       if(node == nullptr)
         return;

       function(node->value, constPar, par);
       FoldPreOrder(function, constPar, par, node->next);
     }

     template <typename Data>
     void List<Data>::FoldPostOrder(FoldFunctor function, const void* constPar, void* par, struct Node* node) const{
       if(node == nullptr)
         return;

       FoldPostOrder(function, constPar, par, node->next);
       function(node->value, constPar, par);
     }
/* ************************************************************************** */
}