#ifndef _ZoO_IO_ERROR_H_
#define _ZoO_IO_ERROR_H_

#include <stdio.h>

#include "../pervasive.h"

#define ZoO_DEBUG_ALL 1

#ifndef ZoO_DEBUG_ALL
   #define ZoO_DEBUG_ALL 0
#endif

#ifndef ZoO_DEBUG_PROGRAM_FLOW
   #define ZoO_DEBUG_PROGRAM_FLOW   (0 || ZoO_DEBUG_ALL)
#endif

#ifndef ZoO_DEBUG_CONFIG
   #define ZoO_DEBUG_CONFIG         (0 || ZoO_DEBUG_ALL)
#endif

#ifndef ZoO_DEBUG_LEARNING
   #define ZoO_DEBUG_LEARNING       (0 || ZoO_DEBUG_ALL)
#endif

#ifndef ZoO_DEBUG_NETWORK
   #define ZoO_DEBUG_NETWORK        (0 || ZoO_DEBUG_ALL)
#endif

#define ZoO_ENABLE_WARNINGS_OUTPUT              1
#define ZoO_ENABLE_RUNTIME_ERRORS_OUTPUT        1
#define ZoO_ENABLE_PROGRAMMING_ERRORS_OUTPUT    1
#define ZoO_ENABLE_FATAL_ERROR_OUTPUT           1

#ifdef ZoO_ENABLE_ERROR_LOCATION
   #define ZoO_LOCATION "[" __FILE__ "][" ZoO_TO_STRING(__LINE__) "]"
#else
   #define ZoO_LOCATION ""
#endif

#define ZoO_PRINT_STDERR(symbol, str, ...)\
   fprintf(stderr, "[" symbol "]" ZoO_LOCATION " " str "\n", __VA_ARGS__);

/*
 * Given that we use preprocessor contants as flags, we can expect the compilers
 * to remove the test condition for disabled flags. No need to be shy about
 * allowing many debug options.
 */

#define ZoO_DEBUG(flag, str, ...)\
   ZoO_ISOLATE\
   (\
      if (flag)\
      {\
         ZoO_PRINT_STDERR("D", str, __VA_ARGS__);\
      }\
   )


#define ZoO_WARNING(str, ...)\
   ZoO_ISOLATE\
   (\
      if (ZoO_ENABLE_WARNINGS_OUTPUT)\
      {\
         ZoO_PRINT_STDERR("W", str, __VA_ARGS__);\
      }\
   )

#define ZoO_ERROR(str, ...)\
   ZoO_ISOLATE\
   (\
      if (ZoO_ENABLE_RUNTIME_ERRORS_OUTPUT)\
      {\
         ZoO_PRINT_STDERR("E", str, __VA_ARGS__);\
      }\
   )

#define ZoO_PROG_ERROR(str, ...)\
   ZoO_ISOLATE\
   (\
      if (ZoO_ENABLE_PROGRAMMING_ERRORS_OUTPUT)\
      {\
         ZoO_PRINT_STDERR("P", str, __VA_ARGS__);\
      }\
   )

#define ZoO_FATAL(str, ...)\
   ZoO_ISOLATE\
   (\
     if (ZoO_ENABLE_FATAL_ERROR_OUTPUT)\
      {\
         ZoO_PRINT_STDERR("F", str, __VA_ARGS__);\
      }\
   )

/* For outputs without dynamic content (static). ******************************/

#define ZoO_PRINT_S_STDERR(symbol, str)\
   fprintf(stderr, "[" symbol "]" ZoO_LOCATION " " str "\n");

#define ZoO_S_DEBUG(flag, str)\
   ZoO_ISOLATE\
   (\
      if (flag)\
      {\
         ZoO_PRINT_S_STDERR("D", str);\
      }\
   )

#define ZoO_S_WARNING(str)\
   ZoO_ISOLATE\
   (\
      if (ZoO_ENABLE_WARNINGS_OUTPUT)\
      {\
         ZoO_PRINT_S_STDERR("W", str);\
      }\
   )

#define ZoO_S_ERROR(str)\
   ZoO_ISOLATE\
   (\
      if (ZoO_ENABLE_RUNTIME_ERRORS_OUTPUT)\
      {\
         ZoO_PRINT_S_STDERR("E", str);\
      }\
   )

#define ZoO_S_PROG_ERROR(str)\
   ZoO_ISOLATE\
   (\
      if (ZoO_ENABLE_PROGRAMMING_ERRORS_OUTPUT)\
      {\
         ZoO_PRINT_S_STDERR("P", str);\
      }\
   )

#define ZoO_S_FATAL(str)\
   ZoO_ISOLATE\
   (\
     if (ZoO_ENABLE_FATAL_ERROR_OUTPUT)\
      {\
         ZoO_PRINT_S_STDERR("F", str);\
      }\
   )

#endif