/********************************************************************
 * Obiview header file                                              *
 ********************************************************************/

/**
 * @file obiview.h
 * @author Celine Mercier (celine.mercier@metabarcoding.org)
 * @date 16 December 2015
 * @brief Header file for the OBIDMS view functions and structures.
 */


#ifndef OBIVIEW_H_
#define OBIVIEW_H_


#include <stdlib.h>
#include <errno.h>
#include <stdio.h>
#include <stdbool.h>
#include <time.h>
#include <math.h>

#include "obidms.h"
#include "obidmscolumn.h"
#include "obierrno.h"


#define OBIVIEW_NAME_MAX_LENGTH (10239)   /**< The maximum length of an OBIDMS view name.
                                	 	   */
#define OBIVIEW_FILE_NAME "obiviews"

#define LINES_COLUMN_NAME "LINES"


/**
 * @brief .
 */
typedef struct Column_reference {
	char 	   	 column_name[OBIDMS_COLUMN_MAX_NAME+1];    /**< Name of the column.
	 	 	 	 	 	 	 	 	 	 	 	 	 	    */
	obiversion_t version;				   		    	   /**< Version of the column.
	 	 	 	 	 	 	 	 	 	 	 	 	 	    */
} Column_reference_t, *Column_reference_p;


/**
 * @brief .
 */
typedef struct Obiview {

	OBIDMS_p         	dms;

	bool             	read_only;

	OBIDMS_column_p  	line_selection;

	OBIDMS_column_p  	new_line_selection;

	index_t			 	line_count;

	int    			 	column_count;

	OBIDMS_column_p  	columns[MAX_NB_OPENED_COLUMNS];

	char   				name[OBIVIEW_NAME_MAX_LENGTH+1];

	char				created_from[OBIVIEW_NAME_MAX_LENGTH+1];

	int					view_number;

} Obiview_t, *Obiview_p;


/**
 * @brief .
 */
typedef struct Obiview_infos {
	int					view_number;

	int 				column_count;

	index_t             line_count;

	char   				name[OBIVIEW_NAME_MAX_LENGTH+1];

	char				created_from[OBIVIEW_NAME_MAX_LENGTH+1];

	time_t 		 		creation_date;

	bool				all_lines;

	Column_reference_t	line_selection;

	Column_reference_t	column_references[MAX_NB_OPENED_COLUMNS];

} Obiview_infos_t, *Obiview_infos_p;


/**
 * @brief .
 */
typedef struct Obiviews_header {
	size_t header_size;
	size_t views_size;
	int    view_count;
} Obiviews_header_t, *Obiviews_header_p;


/**
 * @brief .
 */
typedef struct Obiviews {	// not used
	Obiviews_header_p	header;

	Obiview_infos_p 	views;

} Obiviews_t, *Obiviews_p;


Obiview_p obi_new_view(OBIDMS_p dms, const char* view_name, Obiview_p view_to_clone, index_t* line_selection);

Obiview_p obi_new_view_cloned_from_name(OBIDMS_p dms, const char* view_name, const char* view_to_clone_name, index_t* line_selection);

Obiview_p obi_open_view(OBIDMS_p dms, const char* view_name);

int obi_view_add_column(Obiview_p view,
						const char* column_name,
						obiversion_t version_number,
						OBIType_t data_type,
						index_t nb_lines,
						index_t nb_elements_per_line,
						const char* elements_names,
						const char* avl_name,
						const char* comments,
						bool create);

int obi_view_delete_column(Obiview_p view, const char* column_name);

int obi_select_line(Obiview_p view, index_t line_nb);

int obi_select_lines(Obiview_p view, index_t* line_nbs);

int obi_view_update_lines(Obiview_p view, index_t line_count);

OBIDMS_column_p obi_view_clone_column(Obiview_p view, const char* column_name);

OBIDMS_column_p obi_view_get_column(Obiview_p view, const char* column_name);

OBIDMS_column_p* obi_view_get_pointer_on_column_in_view(Obiview_p view, const char* column_name);

int obi_save_view(Obiview_p view);

int obi_close_view(Obiview_p view);

int obi_save_and_close_view(Obiview_p view);

#endif /* OBIVIEW_H_ */