/* 
A* -------------------------------------------------------------------
B* This file contains source code for the PyMOL computer program
C* Copyright (c) Schrodinger, LLC. 
D* -------------------------------------------------------------------
E* It is unlawful to modify or remove this copyright notice.
F* -------------------------------------------------------------------
G* Please see the accompanying LICENSE file for further information. 
H* -------------------------------------------------------------------
I* Additional authors of this source file include:
-* 
-* 
-*
Z* -------------------------------------------------------------------
*/

#ifndef _H_Feedback
#define _H_Feedback

#include"PyMOLGlobals.h"
#include <vector>
#include <array>


/* 

IMPORTANT DEVELOPER NOTICE:

All non-debugging output should pass through the PRINTF and ENDF
macros currently defined below, or through the FeedbackAdd or
FeedbackAutoAdd routines.

Feedback bits are:

Results -- DEFAULT: ON

output from a definite action which gives a result, such as an RMS
fit, a measured surface area, etc.

Errors -- DEFAULT: ON

complaints which will cause failure at some level.

Actions -- DEFAULT: ON

Output regarding actions in progress or completed, but which
don't return a particular result.  Example: loading an object or
creating a selection.

Warnings -- DEFAULT: ON

Questionable situations which will not necessarily result in task
failure.  Examples: creation of atom selection which includes no
atoms.  RMS fitting with <4 atoms. 

Details -- DEFAULT: ON

Verbose output reflecting details about what is going on, such as the
number of primitives in a raytracing scene. DEFAULT: ON

Blather -- DEFAULT: OFF

Output which doesn't fit into the above catogories, and is not likely
to be required except in extreme cases, but doesn't fall into the
category of debugging.

Debugging -- DEFAULT: OFF

Text output while would only be of interest to a developer. 

NOTE: Debugging output is the only kind of output which should be sent
directly to standard output (actually, standard error).

NOTE: Debugging output should always be preceeded b the enclosing
function name.

*/


/* WARNING: The following constants are replicated in Python for the purpose
 * of minimize program startup time */


/* Discrete Systems and/or Code Modules */

#define FB_All               0  /* only used for setting */


/* NOTE, the following don't have to be packed, or in order -- we just
   need to record what the maximum index is.  Rember that that
   feedback architecture is purely a performance hack, so expect some
   inconvenience... 
 */


/* layer 0 */

#define FB_Isomesh                   1
#define FB_Map                       2
#define FB_Matrix                    3
#define FB_MyPNG                     4
#define FB_Triangle                  5
#define FB_Match                     6
#define FB_Raw                       7
#define FB_Isosurface                8
#define FB_OpenGL                    9

// FB_Shader; no room here


/* layer 1 */

#define FB_Color                     10
#define FB_CGO                       11
#define FB_Feedback                  12
#define FB_Scene                     13
#define FB_Threads                   14 /* part of P.c */
#define FB_Symmetry                  15
#define FB_Ray                       16
#define FB_Setting                   17
#define FB_Object                    18
#define FB_Ortho                     19
#define FB_Movie                     20
#define FB_Python                    21 /* part of P.c */
#define FB_Extrude                   22
#define FB_Rep                       23
#define FB_Shaker                    24

/* layer 2 */

#define FB_CoordSet                  25
#define FB_DistSet                   26
#define FB_GadgetSet                 27

#define FB_ObjectMolecule            30
#define FB_ObjectMap                 31
#define FB_ObjectMesh                32
#define FB_ObjectDist                33
#define FB_ObjectCGO                 34
#define FB_ObjectCallback            35
#define FB_ObjectSurface             36
#define FB_ObjectGadget              37
#define FB_ObjectSlice               38
#define FB_ObjectVolume              39

#define FB_RepAngle                  43
#define FB_RepDihedral               44
#define FB_RepWireBond               45
#define FB_RepCylBond                46
#define FB_RepEllipsoid              47
#define FB_RepLabel                  48
#define FB_RepSphere                 49
#define FB_RepSurface                50
#define FB_RepMesh                   51
#define FB_RepDot                    52
#define FB_RepNonbonded              53
#define FB_RepNonbondedSphere        54
#define FB_RepDistDash               55
#define FB_RepDistLabel              56
#define FB_RepRibbon                 57
#define FB_RepCartoon                58
#define FB_Sculpt                    59
#define FB_VFont                     60
// in layer0
#define FB_Shader                    61
#define FB_ShaderMgr                 62
#define FB_ShaderPrg                 63
#define FB_Session                   64
// in layer1
#define FB_Property                  65

/* layer 3 */

#define FB_Executive                 70
#define FB_Selector                  71
#define FB_Editor                    72
#define FB_Nag                       73


/* layer 4 */

#define FB_Export                    75
#define FB_CCmd                      76 /* "cmd" is just the python version */
#define FB_API                       77 /* APIEntry/Exit */


/* layer 5 */

#define FB_Main                      80

#define FB_Total                     81 /* highest index + 1 */


/* Feedback level bit masks */

#define FB_None            0x00

#define FB_Output          0x01


/* python/text output */
#define FB_Results         0x02


/* limited to actual results of an operation...requested measurements, etc. */
#define FB_Errors          0x04
#define FB_Actions         0x08


/* advisories regarding the completion of a */
#define FB_Warnings        0x10
#define FB_Details         0x20
#define FB_Blather         0x40
#define FB_Debugging       0x80

#define FB_Everything      0xFF

class CFeedback
{
  std::vector<std::array<unsigned char, FB_Total>> m_stack{{}};
  PyMOLGlobals* m_G;

public:
  CFeedback(PyMOLGlobals* G, int quiet);
  decltype(m_stack)::value_type& currentLayer() { return m_stack.back(); };
  void push();
  void pop();
  void autoAdd(unsigned int sysmod, unsigned char mask, const char* str);
  void add(const char* str);
  void addColored(const char* str, unsigned char mask);
  void setMask(unsigned int sysmod, unsigned char mask);
  unsigned char& currentMask(unsigned int sysmod);
  bool testMask(unsigned int sysmod, unsigned char mask);
  void disable(unsigned int sysmod, unsigned char mask);
  void enable(unsigned int sysmod, unsigned char mask);
};

/* Mechanism: a high-speed bit test, with no range checking 
 * in order to avoid penalizing performance-senstive code
 * modules which may contain live debugging code.  
 */

inline
bool Feedback(PyMOLGlobals* G, unsigned int sysmod, unsigned char mask)
{
  return G->Feedback->testMask(sysmod, mask);
}

/* FEEDBACK_MAX_OUTPUT should be as small as is reasonable
 * since this much space gets consumed on the stack
 * every time we have a PRINTF macro.  One might consider
 * rewriting these macros to consume heap space instead.
*/

#define FEEDBACK_MAX_OUTPUT 255
typedef char FeedbackLineType[FEEDBACK_MAX_OUTPUT];


/* Print Feedback Macros -- this the most flexible and cross-OS
 * portable solution I've come up with for sending output with
 * variable arguments.
*/

#ifdef _WEBGL
#else

#define PRINTFB(G,sysmod,mask) \
{ \
  FeedbackLineType _FBstr; \
  if(G->Feedback->testMask(sysmod,mask)) {\
    const unsigned char _mask = mask; \
    (snprintf)( _FBstr, FEEDBACK_MAX_OUTPUT,

#define ENDFB(G) \
    ); \
    G->Feedback->addColored(_FBstr,_mask); \
  } \
}

#define PRINTF { FeedbackLineType _FBstr; (snprintf)( _FBstr, FEEDBACK_MAX_OUTPUT,
#define ENDF(G)  ); G->Feedback->add(_FBstr);}
#endif


/* debugging: goes to stderr */

#define PRINTFD(G,sysmod) {if(G->Feedback->testMask(sysmod, FB_Debugging)) { fprintf(stderr,
#define ENDFD   );fflush(stderr);}}


/* convenient vector dumping routine */

#define ENDFD3f(v) );fprintf(stderr,": %8.3f %8.3f %8.3f\n",v[0],v[1],v[2]);fflush(stderr);}}

#endif