#ifndef LEMACS_BUFFER_H
#define LEMACS_BUFFER_H

#include <stdbool.h>
#include <stddef.h>

typedef struct {
  char *data;
  size_t capacity;
  size_t gap_start;
  size_t gap_end;
  char path[1024];
  bool modified;
} Buffer;

bool buffer_init(Buffer *buffer);
void buffer_free(Buffer *buffer);

size_t buffer_length(const Buffer *buffer);
size_t buffer_point(const Buffer *buffer);
void buffer_set_point(Buffer *buffer, size_t point);

bool buffer_insert_char(Buffer *buffer, char c);
bool buffer_insert_cstr(Buffer *buffer, const char *text);
bool buffer_backspace(Buffer *buffer);
bool buffer_delete_forward(Buffer *buffer);

char buffer_char_at(const Buffer *buffer, size_t index);

bool buffer_load_file(Buffer *buffer, const char *path);
bool buffer_save_file(Buffer *buffer, const char *path);
const char *buffer_path(const Buffer *buffer);
bool buffer_modified(const Buffer *buffer);

void buffer_index_to_line_col(const Buffer *buffer, size_t index, int *line, int *col);
size_t buffer_line_col_to_index(const Buffer *buffer, int target_line, int target_col);

#endif