#ifndef GLF_H_
#define GLF_H_

typedef struct
{
  unsigned char ref_base: 4, dummy: 4; /** "XACMGRSVTWYHKDBN"[ref_base] gives the reference base */
  unsigned char max_mapQ; /** maximum mapping quality */
  unsigned char lk[10];   /** log likelihood ratio, capped at 255 */
  unsigned min_lk: 8, depth: 24; /** minimum lk capped at 255, and the number of mapped reads */
} glf1_t;

#include <stdint.h>
#include "bgzf.h"
typedef BGZF *glfFile;

#define GLF3_RTYPE_END   0
#define GLF3_RTYPE_SUB   1
#define GLF3_RTYPE_INDEL 2

typedef struct
{
  uint8_t ref_base: 4, rtype: 4; /** "XACMGRSVTWYHKDBN"[ref_base] gives the reference base */
  uint8_t rms_mapQ; /** RMS mapping quality */
  uint8_t lk[10];   /** log likelihood ratio, capped at 255 */
  uint32_t min_lk: 8, depth: 24; /** minimum lk capped at 255, and the number of mapped reads */
  int32_t offset; /** the first base in a chromosome has offset zero. */
  // for indel (lkHom1, lkHom2 and lkHet are the first three elements in lk[10])
  int16_t indel_len[2];
  int32_t max_len; // maximum indel len; will be modified by glf3_read1()
  char *indel_seq[2];
} glf3_t;

typedef struct
{
  int32_t l_text;
  uint8_t *text;
} glf3_header_t;

#ifdef __cplusplus
extern "C" {
#endif

#define glf3_init1() ((glf3_t*)calloc(1, sizeof(glf3_t)))
#define glf3_destroy1(g3) do { free((g3)->indel_seq[0]); free((g3)->indel_seq[1]); free(g3); } while (0)

glf3_header_t *glf3_header_init();
glf3_header_t *glf3_header_read ( glfFile fp );
void glf3_header_write ( glfFile fp, const glf3_header_t *h );
void glf3_header_destroy ( glf3_header_t *h );
char *glf3_ref_read ( glfFile fp, int *len );
void glf3_ref_write ( glfFile fp, const char *name, int len );
int glf3_write1 ( glfFile fp, const glf3_t *g3 );
int glf3_read1 ( glfFile fp, glf3_t *g3 );

#ifdef __cplusplus
}
#endif

#endif