/*
 * ZeroTier SDK - Network Virtualization Everywhere
 * Copyright (C) 2011-2017  ZeroTier, Inc.  https://www.zerotier.com/
 *
 * 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 3 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, see <http://www.gnu.org/licenses/>.
 *
 * --
 *
 * You can be released from the requirements of the license by purchasing
 * a commercial license. Buying such a license is mandatory as soon as you
 * develop commercial closed-source software that incorporates or links
 * directly against ZeroTier software without disclosing the source code
 * of your own application.
 */

/**
 * @file
 *
 * Debug macros
 */

#ifndef LIBZT_DEBUG_HPP
#define LIBZT_DEBUG_HPP

#if defined(__MINGW32__) || !defined(_WIN32)
#include <pthread.h>
#include <unistd.h>
#endif

#include <sys/types.h>
#include <cstring>

#if defined(__linux__)
#include <sys/syscall.h>
#endif

#include "Platform.h"

#define ZT_MSG_ERROR       true // Errors
#define ZT_MSG_INFO        true // Information which is generally useful to any developer
#define ZT_MSG_TEST        true // For use in selftest
#define ZT_MSG_TRANSFER    true // RX/TX specific statements
#define ZT_MSG_EXTRA       true // If nothing in your world makes sense

#define ZT_COLOR           true

// Debug output colors
#if defined(__APPLE__)
		#include "TargetConditionals.h"
#endif
#if defined(ZT_COLOR) && !defined(__MINGW32__) && !defined(__ANDROID__) && !defined(TARGET_OS_IPHONE) && !defined(TARGET_IPHONE_SIMULATOR) && !defined(__APP_FRAMEWORK__)
	#define ZT_RED   "\x1B[31m"
	#define ZT_GRN   "\x1B[32m"
	#define ZT_YEL   "\x1B[33m"
	#define ZT_BLU   "\x1B[34m"
	#define ZT_MAG   "\x1B[35m"
	#define ZT_CYN   "\x1B[36m"
	#define ZT_WHT   "\x1B[37m"
	#define ZT_RESET "\x1B[0m"
#else
	#define ZT_RED
	#define ZT_GRN
	#define ZT_YEL
	#define ZT_BLU
	#define ZT_MAG
	#define ZT_CYN
	#define ZT_WHT
	#define ZT_RESET
#endif

#define ZT_FILENAME (strrchr(__FILE__, '/') ? strrchr(__FILE__, '/') + 1 : __FILE__) // short

#ifdef __cplusplus
extern "C" {
#endif
extern unsigned int gettid(); // defined in libzt.cpp
#ifdef __cplusplus
}
#endif

#ifdef __linux__
  #define ZT_THREAD_ID syscall(SYS_gettid)
#elif __APPLE__
  #define ZT_THREAD_ID (long)0//(long)gettid()
#endif
#ifdef __MINGW32__
  #define ZT_THREAD_ID (long)0
#endif

#if defined(__JNI_LIB__)
		#include <jni.h>
#endif
#if defined(__ANDROID__)
		#include <android/log.h>
		#define ZT_LOG_TAG "ZTSDK"
#endif

// Network stack debugging
#if defined(__ANDROID__)
	#define DEBUG_STACK(fmt, args...) ((void)__android_log_print(ANDROID_LOG_VERBOSE, ZT_LOG_TAG, \
			"STACK[%ld]: %17s:%5d:%20s: " fmt "\n", ZT_THREAD_ID, ZT_FILENAME, __LINE__, __FUNCTION__, ##args))
#endif
#if defined(_WIN32) && !(defined(__MINGW32__) || defined(__MINGW64__)) // WINDOWS
	#define DEBUG_STACK(fmt, args, ...) fprintf(stderr, ZT_YEL "STACK[%ld]: %17s:%5d:%25s: " fmt \
		ZT_RESET, ZT_THREAD_ID, ZT_FILENAME, __LINE__, __FUNCTION__, ##args)
#else
#define DEBUG_STACK(fmt, args ...) fprintf(stderr, ZT_YEL "STACK[%ld]: %17s:%5d:%25s: " fmt \
		ZT_RESET, ZT_THREAD_ID, ZT_FILENAME, __LINE__, __FUNCTION__, ##args)
#endif

// libzt POSIX socket emulation layer debugging
#if defined(LIBZT_DEBUG) || defined(__NATIVETEST__)
	//
	#if ZT_MSG_TEST == true
		#if defined(__ANDROID__)
			#define DEBUG_TEST(fmt, args...) ((void)__android_log_print(ANDROID_LOG_VERBOSE, ZT_LOG_TAG, \
				"TEST : %17s:%5d:%25s: " fmt "\n", ZT_FILENAME, __LINE__, __FUNCTION__, ##args))
			#endif
		#if defined(_WIN32) && !(defined(__MINGW32__) || defined(__MINGW64__)) // WINDOWS
			#define DEBUG_TEST(fmt, args, ...) fprintf(stderr, ZT_CYN "TEST [%ld]: %17s:%5d:%25s: " fmt \
					ZT_RESET, ZT_THREAD_ID, ZT_FILENAME, __LINE__, __FUNCTION__, ##args)
		#else
		#define DEBUG_TEST(fmt, args ...) fprintf(stderr, ZT_CYN "TEST [%ld]: %17s:%5d:%25s: " fmt \
				ZT_RESET, ZT_THREAD_ID, ZT_FILENAME, __LINE__, __FUNCTION__, ##args)
		#endif
	#else
		#define DEBUG_TEST(fmt, args...)
	#endif

	//
	#if ZT_MSG_ERROR == true
		#if defined(__ANDROID__)
			#define DEBUG_ERROR(fmt, args...) ((void)__android_log_print(ANDROID_LOG_VERBOSE, ZT_LOG_TAG, \
				"ERROR: %17s:%5d:%20s: " fmt "\n", ZT_FILENAME, __LINE__, __FUNCTION__, ##args))
		#endif
		#if defined(_WIN32) && !(defined(__MINGW32__) || defined(__MINGW64__)) // WINDOWS
			#define DEBUG_ERROR(fmt, args, ...) fprintf(stderr, ZT_RED "ERROR[%ld]: %17s:%5d:%25s: " fmt \
					ZT_RESET, ZT_THREAD_ID, ZT_FILENAME, __LINE__, __FUNCTION__, ##args)
		#else
		#define DEBUG_ERROR(fmt, args ...) fprintf(stderr, ZT_RED "ERROR[%ld]: %17s:%5d:%25s: " fmt \
				ZT_RESET, ZT_THREAD_ID, ZT_FILENAME, __LINE__, __FUNCTION__, ##args)
		#endif
	#else
		#define DEBUG_ERROR(fmt, args...)
	#endif

	//
	#if ZT_MSG_INFO == true
		#if defined(__ANDROID__)
			#define DEBUG_INFO(fmt, args...) ((void)__android_log_print(ANDROID_LOG_VERBOSE, ZT_LOG_TAG, \
				"INFO : %17s:%5d:%20s: " fmt "\n", ZT_FILENAME, __LINE__, __FUNCTION__, ##args))
			#endif
		#if defined(_WIN32) && !(defined(__MINGW32__) || defined(__MINGW64__)) // WINDOWS
			#define DEBUG_INFO(fmt, args, ...) fprintf(stderr, ZT_WHT "INFO [%ld]: %17s:%5d:%25s: " fmt \
					ZT_RESET, ZT_THREAD_ID, ZT_FILENAME, __LINE__, __FUNCTION__, ##args)
		#else
			#define DEBUG_INFO(fmt, args ...) fprintf(stderr, ZT_WHT "INFO [%ld]: %17s:%5d:%25s: " fmt \
					ZT_RESET, ZT_THREAD_ID, ZT_FILENAME, __LINE__, __FUNCTION__, ##args)
		#endif
	#else
		#define DEBUG_INFO(fmt, args...)
	#endif

	//
	#if ZT_MSG_TRANSFER == true
		#if defined(__ANDROID__)
			#define DEBUG_TRANS(fmt, args...) ((void)__android_log_print(ANDROID_LOG_VERBOSE, ZT_LOG_TAG, \
				"TRANS: %17s:%5d:%25s: " fmt "\n", ZT_FILENAME, __LINE__, __FUNCTION__, ##args))
			#endif
		#if defined(_WIN32) && !(defined(__MINGW32__) || defined(__MINGW64__)) // WINDOWS
			#define DEBUG_TRANS(fmt, args, ...) fprintf(stderr, ZT_GRN "TRANS[%ld]: %17s:%5d:%25s: " fmt \
					ZT_RESET, ZT_THREAD_ID, ZT_FILENAME, __LINE__, __FUNCTION__, ##args)
		#else
			#define DEBUG_TRANS(fmt, args ...) fprintf(stderr, ZT_GRN "TRANS[%ld]: %17s:%5d:%25s: " fmt \
					ZT_RESET, ZT_THREAD_ID, ZT_FILENAME, __LINE__, __FUNCTION__, ##args)
		#endif
	#else
		#define DEBUG_TRANS(fmt, args...)
	#endif

	//
	#if ZT_MSG_EXTRA == true
		#if defined(__ANDROID__)
			#define DEBUG_EXTRA(fmt, args...) ((void)__android_log_print(ANDROID_LOG_VERBOSE, ZT_LOG_TAG, \
				"EXTRA: %17s:%5d:%25s: " fmt "\n", ZT_FILENAME, __LINE__, __FUNCTION__, ##args))
		#endif
		#if defined(_WIN32) && !(defined(__MINGW32__) || defined(__MINGW64__)) // WINDOWS
			#define DEBUG_EXTRA(fmt, args, ...) fprintf(stderr, ZT_WHT "EXTRA[%ld]: %17s:%5d:%25s: " fmt \
					ZT_RESET, ZT_THREAD_ID, ZT_FILENAME, __LINE__, __FUNCTION__, ##args)
		#else
			#define DEBUG_EXTRA(fmt, args ...) fprintf(stderr, ZT_WHT "EXTRA[%ld]: %17s:%5d:%25s: " fmt \
					ZT_RESET, ZT_THREAD_ID, ZT_FILENAME, __LINE__, __FUNCTION__, ##args)
		#endif
	#else
		#define DEBUG_EXTRA(fmt, args...)
	#endif

#else // !LIBZT_DEBUG || !__NATIVE_TEST__
	#if defined(_WIN32) && !(defined(__MINGW32__) || defined(__MINGW64__)) // WINDOWS
		#define DEBUG_ERROR(fmt, args, ...)
		#define DEBUG_TEST(fmt, args, ...)
		#define DEBUG_INFO(fmt, args, ...)
		#define DEBUG_BLANK(fmt, args, ...)
		#define DEBUG_ATTN(fmt, args, ...)
		#define DEBUG_TRANS(fmt, args, ...)
		#define DEBUG_EXTRA(fmt, args, ...)
	#else
		#define DEBUG_ERROR(fmt, args...)
		#define DEBUG_TEST(fmt, args...)
		#define DEBUG_INFO(fmt, args...)
		#define DEBUG_BLANK(fmt, args...)
		#define DEBUG_ATTN(fmt, args...)
		#define DEBUG_TRANS(fmt, args...)
		#define DEBUG_EXTRA(fmt, args...)
	#endif
#endif

#endif // _H