/*
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * The Original Code is Copyright (C) 2013 Blender Foundation.
 * All rights reserved.
 */

/** \file
 * \ingroup depsgraph
 */

#pragma once

#include "intern/debug/deg_time_average.h"
#include "intern/depsgraph_type.h"

#include "BKE_global.h"

#include "DEG_depsgraph_debug.h"

namespace blender {
namespace deg {

class DepsgraphDebug {
 public:
  DepsgraphDebug();

  bool do_time_debug() const;

  void begin_graph_evaluation();
  void end_graph_evaluation();

  /* NOTE: Corresponds to G_DEBUG_DEPSGRAPH_* flags. */
  int flags;

  /* Name of this dependency graph (is used for debug prints, helping to distinguish graphs
   * created for different view layer). */
  string name;

  /* Is true when dependency graph was evaluated at least once.
   * This is NOT an indication that depsgraph is at its evaluated state. */
  bool is_ever_evaluated;

 protected:
  /* Maximum number of counters used to calculate frame rate of depsgraph update. */
  static const constexpr int MAX_FPS_COUNTERS = 64;

  /* Point in time when last graph evaluation began.
   * Is initialized from begin_graph_evaluation() when time debug is enabled.
   */
  double graph_evaluation_start_time_;

  AveragedTimeSampler<MAX_FPS_COUNTERS> fps_samples_;
};

#define DEG_DEBUG_PRINTF(depsgraph, type, ...) \
  do { \
    if (DEG_debug_flags_get(depsgraph) & G_DEBUG_DEPSGRAPH_##type) { \
      DEG_debug_print_begin(depsgraph); \
      fprintf(stdout, __VA_ARGS__); \
    } \
  } while (0)

#define DEG_GLOBAL_DEBUG_PRINTF(type, ...) \
  do { \
    if (G.debug & G_DEBUG_DEPSGRAPH_##type) { \
      fprintf(stdout, __VA_ARGS__); \
    } \
  } while (0)

#define DEG_ERROR_PRINTF(...) \
  do { \
    fprintf(stderr, __VA_ARGS__); \
    fflush(stderr); \
  } while (0)

bool terminal_do_color(void);
string color_for_pointer(const void *pointer);
string color_end(void);

}  // namespace deg
}  // namespace blender