/**
 * WinPR: Windows Portable Runtime
 * WinPR Logger
 *
 * Copyright 2013 Marc-Andre Moreau <marcandre.moreau@gmail.com>
 * Copyright 2015 Thincast Technologies GmbH
 * Copyright 2015 DI (FH) Martin Haimberger <martin.haimberger@thincast.com>
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include "BinaryAppender.h"
#include <winpr/crt.h>
#include <winpr/file.h>
#include <winpr/path.h>
#include <winpr/stream.h>


struct _wLogBinaryAppender
{
	WLOG_APPENDER_COMMON();

	char* FileName;
	char* FilePath;
	char* FullFileName;
	FILE* FileDescriptor;
};
typedef struct _wLogBinaryAppender wLogBinaryAppender;

static BOOL WLog_BinaryAppender_Open(wLog* log, wLogAppender* appender)
{
	wLogBinaryAppender* binaryAppender;
	if (!log || !appender)
		return FALSE;

	binaryAppender = (wLogBinaryAppender *)appender;
	if (!binaryAppender->FileName)
	{
		binaryAppender->FileName = (char*) malloc(MAX_PATH);
		if (!binaryAppender->FileName)
			return FALSE;
		sprintf_s(binaryAppender->FileName, MAX_PATH, "%"PRIu32".wlog", GetCurrentProcessId());
	}

	if (!binaryAppender->FilePath)
	{
		binaryAppender->FilePath = GetKnownSubPath(KNOWN_PATH_TEMP, "wlog");
		if (!binaryAppender->FilePath)
			return FALSE;
	}

	if (!binaryAppender->FullFileName)
	{
		binaryAppender->FullFileName = GetCombinedPath(binaryAppender->FilePath, binaryAppender->FileName);
		if (!binaryAppender->FullFileName)
			return FALSE;
	}

	if (!PathFileExistsA(binaryAppender->FilePath))
	{
		if (!PathMakePathA(binaryAppender->FilePath, 0))
			return FALSE;
		UnixChangeFileMode(binaryAppender->FilePath, 0xFFFF);
	}

	binaryAppender->FileDescriptor = fopen(binaryAppender->FullFileName, "a+");

	if (!binaryAppender->FileDescriptor)
		return FALSE;

	return TRUE;
}

static BOOL WLog_BinaryAppender_Close(wLog* log, wLogAppender* appender)
{
	wLogBinaryAppender* binaryAppender;

	if (!appender)
		return FALSE;

	binaryAppender = (wLogBinaryAppender *)appender;
	if (!binaryAppender->FileDescriptor)
		return TRUE;

	fclose(binaryAppender->FileDescriptor);

	binaryAppender->FileDescriptor = NULL;

	return TRUE;
}

static BOOL WLog_BinaryAppender_WriteMessage(wLog* log, wLogAppender* appender, wLogMessage* message)
{
	FILE* fp;
	wStream* s;
	int MessageLength;
	int FileNameLength;
	int FunctionNameLength;
	int TextStringLength;
	BOOL ret = TRUE;
	wLogBinaryAppender* binaryAppender;

	if (!log || !appender || !message)
		return FALSE;

	binaryAppender = (wLogBinaryAppender *)appender;

	fp = binaryAppender->FileDescriptor;

	if (!fp)
		return FALSE;

	FileNameLength = (int) strlen(message->FileName);
	FunctionNameLength = (int) strlen(message->FunctionName);
	TextStringLength = (int) strlen(message->TextString);

	MessageLength = 16 +
			(4 + FileNameLength + 1) +
			(4 + FunctionNameLength + 1) +
			(4 + TextStringLength + 1);

	s = Stream_New(NULL, MessageLength);
	if (!s)
		return FALSE;

	Stream_Write_UINT32(s, MessageLength);

	Stream_Write_UINT32(s, message->Type);
	Stream_Write_UINT32(s, message->Level);

	Stream_Write_UINT32(s, message->LineNumber);

	Stream_Write_UINT32(s, FileNameLength);
	Stream_Write(s, message->FileName, FileNameLength + 1);

	Stream_Write_UINT32(s, FunctionNameLength);
	Stream_Write(s, message->FunctionName, FunctionNameLength + 1);

	Stream_Write_UINT32(s, TextStringLength);
	Stream_Write(s, message->TextString, TextStringLength + 1);

	Stream_SealLength(s);

	if (fwrite(Stream_Buffer(s), MessageLength, 1, fp) != 1)
		ret = FALSE;

	Stream_Free(s, TRUE);

	return ret;
}

static BOOL WLog_BinaryAppender_WriteDataMessage(wLog* log, wLogAppender* appender, wLogMessage* message)
{
	return TRUE;
}

static BOOL WLog_BinaryAppender_WriteImageMessage(wLog* log, wLogAppender* appender, wLogMessage* message)
{
	return TRUE;
}

static BOOL WLog_BinaryAppender_Set(wLogAppender* appender, const char *setting, void *value)
{
	wLogBinaryAppender *binaryAppender = (wLogBinaryAppender *) appender;

	if (!value || !strlen(value))
		return FALSE;

	if (!strcmp("outputfilename", setting))
	{
		binaryAppender->FileName = _strdup((const char *)value);
		if (!binaryAppender->FileName)
			return FALSE;
	}
	else if (!strcmp("outputfilepath", setting))
	{
		binaryAppender->FilePath = _strdup((const char *)value);
		if (!binaryAppender->FilePath)
			return FALSE;
	}
	else
		return FALSE;

	return TRUE;
}

static void WLog_BinaryAppender_Free(wLogAppender* appender)
{
	wLogBinaryAppender *binaryAppender;
	if (appender)
	{
		binaryAppender = (wLogBinaryAppender *)appender;
		free(binaryAppender->FileName);
		free(binaryAppender->FilePath);
		free(binaryAppender->FullFileName);
		free(binaryAppender);
	}
}

wLogAppender* WLog_BinaryAppender_New(wLog* log)
{
	wLogBinaryAppender* BinaryAppender;

	BinaryAppender = (wLogBinaryAppender*) calloc(1, sizeof(wLogBinaryAppender));
	if (!BinaryAppender)
		return NULL;

	BinaryAppender->Type = WLOG_APPENDER_BINARY;
	BinaryAppender->Open = WLog_BinaryAppender_Open;
	BinaryAppender->Close = WLog_BinaryAppender_Close;
	BinaryAppender->WriteMessage = WLog_BinaryAppender_WriteMessage;
	BinaryAppender->WriteDataMessage = WLog_BinaryAppender_WriteDataMessage;
	BinaryAppender->WriteImageMessage = WLog_BinaryAppender_WriteImageMessage;
	BinaryAppender->Free = WLog_BinaryAppender_Free;
	BinaryAppender->Set = WLog_BinaryAppender_Set;

	return (wLogAppender *)BinaryAppender;
}
