#ifndef BUFFER_H
#define BUFFER_H

#include <stdint.h>
#include <stddef.h>
#include "types.h"

typedef struct {
  uint8_t *data;
  size_t length;
  size_t capacity;
  int ref_count;
  int is_shared;
  int is_detached;
} ArrayBufferData;

typedef enum {
  TYPED_ARRAY_INT8,
  TYPED_ARRAY_UINT8,
  TYPED_ARRAY_UINT8_CLAMPED,
  TYPED_ARRAY_INT16,
  TYPED_ARRAY_UINT16,
  TYPED_ARRAY_INT32,
  TYPED_ARRAY_UINT32,
  TYPED_ARRAY_FLOAT32,
  TYPED_ARRAY_FLOAT64,
  TYPED_ARRAY_BIGINT64,
  TYPED_ARRAY_BIGUINT64
} TypedArrayType;

typedef struct {
  ArrayBufferData *buffer;
  TypedArrayType type;
  size_t byte_offset;
  size_t byte_length;
  size_t length;
} TypedArrayData;

typedef struct {
  ArrayBufferData *buffer;
  size_t byte_offset;
  size_t byte_length;
} DataViewData;

void init_buffer_module(void);
void cleanup_buffer_module(void);
void free_array_buffer_data(ArrayBufferData *data);
size_t buffer_get_external_memory(void);

ArrayBufferData *create_array_buffer_data(size_t length);
jsval_t create_arraybuffer_obj(struct js *js, ArrayBufferData *buffer);

jsval_t create_typed_array(
  struct js *js, TypedArrayType type, ArrayBufferData *buffer,
  size_t byte_offset, size_t length, const char *type_name
);

jsval_t create_typed_array_with_buffer(
  struct js *js, TypedArrayType type, ArrayBufferData *buffer,
  size_t byte_offset, size_t length, 
  const char *type_name, jsval_t arraybuffer_obj
);

#endif