/*
 * Copyright 2011-2016 Blender Foundation
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#pragma once

#include "graph/node_type.h"

#include "util/util_array.h"
#include "util/util_map.h"
#include "util/util_param.h"

CCL_NAMESPACE_BEGIN

class MD5Hash;
struct Node;
struct NodeType;
struct Transform;

/* Node */

struct Node {
  explicit Node(const NodeType *type, ustring name = ustring());
  virtual ~Node() = 0;

  /* set values */
  void set(const SocketType &input, bool value);
  void set(const SocketType &input, int value);
  void set(const SocketType &input, uint value);
  void set(const SocketType &input, float value);
  void set(const SocketType &input, float2 value);
  void set(const SocketType &input, float3 value);
  void set(const SocketType &input, const char *value);
  void set(const SocketType &input, ustring value);
  void set(const SocketType &input, const Transform &value);
  void set(const SocketType &input, Node *value);

  /* set array values. the memory from the input array will taken over
   * by the node and the input array will be empty after return */
  void set(const SocketType &input, array<bool> &value);
  void set(const SocketType &input, array<int> &value);
  void set(const SocketType &input, array<float> &value);
  void set(const SocketType &input, array<float2> &value);
  void set(const SocketType &input, array<float3> &value);
  void set(const SocketType &input, array<ustring> &value);
  void set(const SocketType &input, array<Transform> &value);
  void set(const SocketType &input, array<Node *> &value);

  /* get values */
  bool get_bool(const SocketType &input) const;
  int get_int(const SocketType &input) const;
  uint get_uint(const SocketType &input) const;
  float get_float(const SocketType &input) const;
  float2 get_float2(const SocketType &input) const;
  float3 get_float3(const SocketType &input) const;
  ustring get_string(const SocketType &input) const;
  Transform get_transform(const SocketType &input) const;
  Node *get_node(const SocketType &input) const;

  /* get array values */
  const array<bool> &get_bool_array(const SocketType &input) const;
  const array<int> &get_int_array(const SocketType &input) const;
  const array<float> &get_float_array(const SocketType &input) const;
  const array<float2> &get_float2_array(const SocketType &input) const;
  const array<float3> &get_float3_array(const SocketType &input) const;
  const array<ustring> &get_string_array(const SocketType &input) const;
  const array<Transform> &get_transform_array(const SocketType &input) const;
  const array<Node *> &get_node_array(const SocketType &input) const;

  /* generic values operations */
  bool has_default_value(const SocketType &input) const;
  void set_default_value(const SocketType &input);
  bool equals_value(const Node &other, const SocketType &input) const;
  void copy_value(const SocketType &input, const Node &other, const SocketType &other_input);

  /* equals */
  bool equals(const Node &other) const;

  /* compute hash of node and its socket values */
  void hash(MD5Hash &md5);

  /* Get total size of this node. */
  size_t get_total_size_in_bytes() const;

  /* Type testing, taking into account base classes. */
  bool is_a(const NodeType *type);

  ustring name;
  const NodeType *type;
};

CCL_NAMESPACE_END