#ifndef EASYCSV_H
#define EASYCSV_H

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/sendfile.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <time.h>

/* Flags for error messages */
typedef enum {
  EASYCSV_ERROROFF,
  EASYCSV_ERRORSTDERR,
  EASYCSV_ERRORSTDOUT
} EASYCSV_ERRORMSG;

/* Using our own flags to facilitate changing modes during file copying phases */
typedef enum {
  EASYCSV_R,
  EASYCSV_W
} EASYCSV_MODE;

typedef enum {
  EASYCSV_REPLACE,
  EASYCSV_APPEND,
  EASYCSV_APPEND_R,
} EASYCSV_VALMODE;

typedef struct _easycsv _easycsv;

typedef struct easycsv {
  EASYCSV_MODE mode;
  _easycsv *_priv; // private members
} easycsv;

/*
 * ============================
 * FUNCTION PROTOTYPES - PUBLIC
 * ============================
 */

/* (Constructor) Initialise easycsv */
easycsv* easycsv_init(const char*, const EASYCSV_MODE);

/* (Constructor) Initialise easycsv with error message option */
easycsv* easycsv_init_errormsg(const char*, const EASYCSV_MODE, const EASYCSV_ERRORMSG);

/* (Destructor) Free easycsv memory */
void easycsv_free(easycsv*);

/* Insert in  */
// int easycsv_insertrow(struct easycsv*, const char*, const int);

/* Create new column on the RHS of an existing one */
int easycsv_pushcolumn(easycsv*, const char*);

/* Insert string in a specific cell */
int easycsv_insertvalue(const easycsv*, const char*, const unsigned int, const unsigned int);

/* Insert string in a vacant cell under a named column */
int easycsv_pushcolumnvalue(const easycsv*, const char*, const char*);

/* Insert string in a specific cell with named column in row 1 */
int easycsv_insertcolumnvalue(const easycsv*, const char*,  const unsigned int, const char*, const EASYCSV_VALMODE);

/* Insert array of string pointers */
int easycsv_pushcolumnstrarray(const easycsv*, const char*[], const char*);

/* Insert array of void pointers */
int easycsv_pushcolumnvoidarray(const easycsv*, const void*[], const char*);

/* Delete CSV value */
int easycsv_deletevalue(const easycsv*, const unsigned int, const unsigned int);

/* Delete column with unsigned int */
int easycsv_deletecolumnint(const easycsv*, const unsigned int);

/* Delete column with str */
int easycsv_deletecolumnstr(const easycsv*, const char*);

/* Delete column value with str */
int easycsv_deletecolumnstrvalue(const easycsv*, const char*, const char*);

/* Append to CSV files */
int easycsv_appendcsv(easycsv*, easycsv*);

/* Read string in a specific cell */
const char *easycsv_readvalue(const easycsv*, const unsigned int, const unsigned int);

/* Read string in a specific cell with named column in row 1 */
const char *easycsv_readcolumnvalue(const easycsv*, const char*, const unsigned int);

/* Number of rows in entire CSV file */
int easycsv_printrows(const easycsv*);

/* Number of columns in entire CSV file */
int easycsv_printcolumns(const easycsv*);

#endif /* EASYCSV_H */