/*
 * Output and debugging functions
 *
 * Author:
 *   Miguel de Icaza (miguel@novell.com)
 *
 * (C) 2006 Novell, Inc.
 * Copyright 2011 Xamarin Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <glib.h>

/* The current fatal levels, error is always fatal */
static GLogLevelFlags fatal = G_LOG_LEVEL_ERROR;

#if PLATFORM_ANDROID
#include <android/log.h>

static android_LogPriority
to_android_priority (GLogLevelFlags log_level)
{
	switch (log_level & G_LOG_LEVEL_MASK)
	{
		case G_LOG_LEVEL_ERROR:     return ANDROID_LOG_FATAL;
		case G_LOG_LEVEL_CRITICAL:  return ANDROID_LOG_ERROR;
		case G_LOG_LEVEL_WARNING:   return ANDROID_LOG_WARN;
		case G_LOG_LEVEL_MESSAGE:   return ANDROID_LOG_INFO;
		case G_LOG_LEVEL_INFO:      return ANDROID_LOG_DEBUG;
		case G_LOG_LEVEL_DEBUG:     return ANDROID_LOG_VERBOSE;
	}
	return ANDROID_LOG_UNKNOWN;
}

static void 
out_vfprintf (FILE *ignore, const gchar *format, va_list args)
{
	/* TODO: provide a proper app name */
	__android_log_vprint (ANDROID_LOG_ERROR, "mono", format, args);
}
#elif MONOTOUCH && defined(__arm__)
#include <asl.h>

static int
to_asl_priority (GLogLevelFlags log_level)
{
	switch (log_level & G_LOG_LEVEL_MASK)
	{
		case G_LOG_LEVEL_ERROR:     return ASL_LEVEL_CRIT;
		case G_LOG_LEVEL_CRITICAL:  return ASL_LEVEL_ERR;
		case G_LOG_LEVEL_WARNING:   return ASL_LEVEL_WARNING;
		case G_LOG_LEVEL_MESSAGE:   return ASL_LEVEL_NOTICE;
		case G_LOG_LEVEL_INFO:      return ASL_LEVEL_INFO;
		case G_LOG_LEVEL_DEBUG:     return ASL_LEVEL_DEBUG;
	}
	return ASL_LEVEL_ERR;
}

static void
out_vfprintf (FILE *ignore, const gchar *format, va_list args)
{
	asl_vlog (NULL, NULL, ASL_LEVEL_WARNING, format, args);
}

#else
static void 
out_vfprintf (FILE *file, const gchar *format, va_list args)
{
	vfprintf (file, format, args);
}
#endif

void
g_print (const gchar *format, ...)
{
	va_list args;

	va_start (args, format);

	out_vfprintf (stdout, format, args);

	va_end (args);
}

void
g_printerr (const gchar *format, ...)
{
	va_list args;

	va_start (args, format);

	out_vfprintf (stderr, format, args);

	va_end (args);
}

GLogLevelFlags
g_log_set_always_fatal (GLogLevelFlags fatal_mask)
{
	GLogLevelFlags old_fatal = fatal;

	fatal |= fatal_mask;
	
	return old_fatal;
}

GLogLevelFlags
g_log_set_fatal_mask (const gchar *log_domain, GLogLevelFlags fatal_mask)
{
	/*
	 * Mono does not use a G_LOG_DOMAIN currently, so we just assume things are fatal
	 * if we decide to set G_LOG_DOMAIN (we probably should) we should implement
	 * this.
	 */
	return fatal_mask;
}

void
g_logv (const gchar *log_domain, GLogLevelFlags log_level, const gchar *format, va_list args)
{
#if PLATFORM_ANDROID
	__android_log_vprint (to_android_priority (log_level), log_domain, format, args);
#elif MONOTOUCH && defined(__arm__)
	asl_vlog (NULL, NULL, to_asl_priority (log_level), format, args);
#else
	char *msg;
	
	if (vasprintf (&msg, format, args) < 0)
		return;

#if MONOTOUCH
	FILE *target = stderr;
#else
	FILE *target = stdout;
#endif
	
	fprintf (target, "%s%s%s\n",
		log_domain != NULL ? log_domain : "",
		log_domain != NULL ? ": " : "",
		msg);
	free (msg);
	if (log_level & fatal){
		fflush (stdout);
		fflush (stderr);
	}
#endif
	if (log_level & fatal){
		abort ();
	}
}

void
g_log (const gchar *log_domain, GLogLevelFlags log_level, const gchar *format, ...)
{
	va_list args;

	va_start (args, format);
	g_logv (log_domain, log_level, format, args);
	va_end (args);
}

void
g_assertion_message (const gchar *format, ...)
{
	va_list args;

	va_start (args, format);
	g_logv (G_LOG_DOMAIN, G_LOG_LEVEL_ERROR, format, args);
	va_end (args);
	abort ();
}