#ifndef H__MODB_METADATA_EXT__
#define H__MODB_METADATA_EXT__

#include <stdint.h>

#include "database.h"
#include "modb_ref.h"


enum e_value_type_t {
  VTYPE_RAW        = 0,
  VTYPE_BOOL       = 1 << 0,
  VTYPE_INT32      = 1 << 1,
  VTYPE_DOUBLE     = 1 << 2,
  VTYPE_STRING     = 1 << 3,
  VTYPE_TIMESTAMP  = 1 << 4,
  VTYPE_ID         = 1 << 5
};

struct meta_ext_t {
  unsigned int id;

  struct meta_ext_value_t **values;
  size_t n_values;
};

struct meta_ext_value_t {
  char *key;
  const char *key_c;
  size_t key_len;

  enum e_value_type_t type;

  union {
    void *raw;
    int boolVal;
    int32_t int32;
    double dbl;
    char *str;
    const char *str_c;
    int64_t ts;
    uint32_t id;
  } value;
  size_t value_len;

  uint32_t is_null  :1;
  uint32_t is_const :1;
};


int tableRowToMetaExt(column_data **col_data, size_t n_cols, size_t row_idx,
                      struct meta_ext_t **ext_ptr);

struct meta_ext_t *allocMetaExt(void);
void freeMetaExt(struct meta_ext_t **meta_ext);
struct meta_ext_t **allocMetaExtList(size_t n_meta_ext_list);
void freeMetaExtList(struct meta_ext_t ***meta_ext_list_ptr, size_t n_meta_exts);

struct meta_ext_value_t *allocMetaExtValue(void);
void freeMetaExtValue(struct meta_ext_value_t **meta_ext_value);
struct meta_ext_value_t **allocMetaExtValues(size_t n_values, int alloc_values);
void freeMetaExtValues(struct meta_ext_value_t ***value_list_ptr, size_t n_values);

// MODB Extended Metadata
int modbMetaExtById(stored_conn *sconn, modb_ref *modb, unsigned int id,
                   struct meta_ext_t **meta_ext);

int modbMetaExtList(stored_conn *sconn, modb_ref *modb, int with_deleted,
                    struct meta_ext_t ***meta_exts, size_t *n_meta_exts);

int64_t modbMetaExtCreate(stored_conn *sconn, modb_ref *modb, struct meta_ext_t *meta_ext);
int64_t modbMetaExtReplace(stored_conn *sconn, modb_ref *modb, unsigned int id,
                          struct meta_ext_t *meta_ext);
int modbMetaExtDelete(stored_conn *sconn, modb_ref *modb, unsigned int id);
int modbMetaExtDestroy(stored_conn *sconn, modb_ref *modb, unsigned int id);


#endif // H__MODB_METADATA_EXT__