/*
 * "Software PW3270, desenvolvido com base nos códigos fontes do WC3270  e X3270
 * (Paul Mattes Paul.Mattes@usa.net), de emulação de terminal 3270 para acesso a
 * aplicativos mainframe. Registro no INPI sob o nome G3270.
 *
 * Copyright (C) <2008> <Banco do Brasil S.A.>
 *
 * Este programa é software livre. Você pode redistribuí-lo e/ou modificá-lo sob
 * os termos da GPL v.2 - Licença Pública Geral  GNU,  conforme  publicado  pela
 * Free Software Foundation.
 *
 * Este programa é distribuído na expectativa de  ser  útil,  mas  SEM  QUALQUER
 * GARANTIA; sem mesmo a garantia implícita de COMERCIALIZAÇÃO ou  de  ADEQUAÇÃO
 * A QUALQUER PROPÓSITO EM PARTICULAR. Consulte a Licença Pública Geral GNU para
 * obter mais detalhes.
 *
 * Você deve ter recebido uma cópia da Licença Pública Geral GNU junto com este
 * programa; se não, escreva para a Free Software Foundation, Inc., 51 Franklin
 * St, Fifth Floor, Boston, MA  02110-1301  USA
 *
 * Este programa está nomeado como filetransfer.h e possui - linhas de código.
 *
 * Contatos:
 *
 * perry.werneck@gmail.com	(Alexandre Perry de Souza Werneck)
 * erico.mendonca@gmail.com	(Erico Mascarenhas de Mendonça)
 * licinio@bb.com.br		(Licínio Luis Branco)
 * kraucer@bb.com.br		(Kraucer Fernandes Mazuco)
 * macmiranda@bb.com.br		(Marco Aurélio Caldas Miranda)
 *
 */

#ifndef LIB3270_FILETRANSFER_INCLUDED

	#define LIB3270_FILETRANSFER_INCLUDED 1
	#include <stdio.h>
	#include <sys/time.h>
	#include <lib3270/charset.h>

	typedef enum _lib3270_FT_OPTION
	{
		LIB3270_FT_OPTION_SEND 					= 0x0000,

		LIB3270_FT_OPTION_RECEIVE				= 0x0001,
		LIB3270_FT_OPTION_ASCII					= 0x0002,		///< @brief Convert to ascii
		LIB3270_FT_OPTION_CRLF					= 0x0004,		///< @brief Add crlf to each line
		LIB3270_FT_OPTION_APPEND				= 0x0008,
		LIB3270_FT_OPTION_REMAP					= 0x0010,		///< @brief Remap ASCII<->EBCDIC
		LIB3270_FT_OPTION_UNIX					= 0x0020,		///< @brief Unix text file

		LIB3270_FT_RECORD_FORMAT_DEFAULT		= 0x0000,
		LIB3270_FT_RECORD_FORMAT_FIXED			= 0x0100,
		LIB3270_FT_RECORD_FORMAT_VARIABLE		= 0x0200,
		LIB3270_FT_RECORD_FORMAT_UNDEFINED		= 0x0300,

		LIB3270_FT_ALLOCATION_UNITS_DEFAULT		= 0x0000,
		LIB3270_FT_ALLOCATION_UNITS_TRACKS		= 0x1000,
		LIB3270_FT_ALLOCATION_UNITS_CYLINDERS	= 0x2000,
		LIB3270_FT_ALLOCATION_UNITS_AVBLOCK		= 0x3000

	} LIB3270_FT_OPTION;

	#define LIB3270_FT_ALLOCATION_UNITS_MASK		LIB3270_FT_ALLOCATION_UNITS_AVBLOCK
	#define LIB3270_FT_RECORD_FORMAT_MASK 			LIB3270_FT_RECORD_FORMAT_UNDEFINED

	typedef enum _lib3270_ft_value
	{

		LIB3270_FT_VALUE_LRECL,
		LIB3270_FT_VALUE_BLKSIZE,
		LIB3270_FT_VALUE_PRIMSPACE,
		LIB3270_FT_VALUE_SECSPACE,
		LIB3270_FT_VALUE_DFT,

		LIB3270_FT_VALUE_COUNT

	} LIB3270_FT_VALUE;

	typedef enum _lib3270_ft_state
	{
		LIB3270_FT_STATE_NONE,			/**< No transfer in progress */
		LIB3270_FT_STATE_AWAIT_ACK,		/**< IND$FILE sent, awaiting acknowledgement message */
		LIB3270_FT_STATE_RUNNING,		/**< Ack received, data flowing */
		LIB3270_FT_STATE_ABORT_WAIT,	/**< Awaiting chance to send an abort */
		LIB3270_FT_STATE_ABORT_SENT		/**< Abort sent; awaiting response */
	} LIB3270_FT_STATE;

	#define LIB3270_XLATE_NBUF	4

	struct lib3270_ft_callbacks
	{
		void (*complete)(H3270 *hSession, unsigned long length,double kbytes_sec,const char *msg, void *userdata);
		void (*failed)(H3270 *hSession, unsigned long length,double kbytes_sec,const char *msg, void *userdata);
		void (*message)(H3270 *hSession, const char *msg, void *userdata);
		void (*update)(H3270 *hSession, unsigned long current, unsigned long length, double kbytes_sec, void *userdata);
		void (*running)(H3270 *hSession, int is_cut, void *userdata);
		void (*aborting)(H3270 *hSession, void *userdata);
		void (*state_changed)(H3270 *hSession, LIB3270_FT_STATE state, const char *text, void *userdata);
	};

	/**
	 * @brief File transfer data.
	 *
	 */
	struct _h3270ft
	{
		struct lib3270_ft_callbacks	  cbk;				///< @brief Callback table - Always the first one.

		int						  ft_last_cr	: 1;	///< @brief CR was last char in local file
		int 					  remap_flag	: 1;	///< @brief Remap ASCII<->EBCDIC
		int						  cr_flag		: 1;	///< @brief Add crlf to each line
		int						  unix_text		: 1;	///< @brief Following the convention for UNIX text files.
		int						  message_flag	: 1;	///< @brief Open Request for msg received
		int						  ascii_flag	: 1;	///< @brief Convert to ascii
		int						  ft_is_cut		: 1;	///< @brief File transfer is CUT-style
		int						  dft_eof		: 1;


		H3270					* host;
		void					* user_data;			///< @brief File transfer dialog handle
		FILE 					* local_file;			///< @brief File descriptor for local file
		unsigned long			  length;				///< @brief File length

		LIB3270_FT_STATE		  state;
		LIB3270_FT_OPTION		  flags;

		int 					  lrecl;
		int 					  blksize;
		int						  primspace;
		int						  secspace;
		int						  dft;

		unsigned long			  ft_length;			///< Length of transfer

		struct timeval			  starting_time;		///< Starting time

		const char 				* local;				///< Local filename
		const char				* remote;				///< Remote filename

		// ft_dft.c
		char 					* abort_string;
		unsigned long			  recnum;
		unsigned char			* dft_savebuf;
		int						  dft_savebuf_len;
		int						  dft_savebuf_max;

		// ft_cut.c
		int						  quadrant;
		unsigned long			  expanded_length;
		char					* saved_errmsg;
		int						  xlate_buffered;					///< buffer count
		int						  xlate_buf_ix;						///< buffer index
		unsigned char			  xlate_buf[LIB3270_XLATE_NBUF];	///< buffer

		// Charset
		struct lib3270_charset	  charset;

	};



	/**
	 * Create a new file transfer session.
	 *
	 * @param session
	 * @param flags
	 * @param local
	 * @param remote
	 * @param lrecl
	 * @param blksize
	 * @param primspace
	 * @param secspace
	 * @param dft
	 * @param msg		Pointer to receive message text.
	 *
	 * @return Filetransfer callback table
	 *
	 */
	LIB3270_EXPORT H3270FT						* lib3270_ft_new(H3270 *hSession, LIB3270_FT_OPTION flags, const char *local, const char *remote, int lrecl, int blksize, int primspace, int secspace, int dft, const char **msg);

	LIB3270_EXPORT int							  lib3270_ft_start(H3270 *hSession);
	LIB3270_EXPORT int							  lib3270_ft_destroy(H3270 *hSession);

	LIB3270_EXPORT int							  lib3270_ft_cancel(H3270 *hSession, int force);

	LIB3270_EXPORT void							  lib3270_ft_set_user_data(H3270 *h, void *ptr);
	LIB3270_EXPORT void						 	* lib3270_ft_get_user_data(H3270 *h);

	LIB3270_EXPORT LIB3270_FT_STATE				  lib3270_get_ft_state(H3270 *session);

	LIB3270_EXPORT struct lib3270_ft_callbacks	* lib3270_get_ft_callbacks(H3270 *session, unsigned short sz);


#endif // LIB3270_FILETRANSFER_INCLUDED