#include <termios.h>

#include <faux/faux.h>

#include "tinyrl/vt100.h"
#include "tinyrl/hist.h"
#include "tinyrl/tinyrl.h"


// UTF-8 functions
ssize_t utf8_to_wchar(const char *sp, unsigned long *sym_out);
bool_t utf8_wchar_is_cjk(unsigned long sym);
char *utf8_move_left(const char *line, char *cur_pos);
char *utf8_move_right(const char *line, char *cur_pos);

// Keys
bool_t tinyrl_key_default(tinyrl_t * tinyrl, int key);
bool_t tinyrl_key_interrupt(tinyrl_t * tinyrl, int key);
bool_t tinyrl_key_start_of_line(tinyrl_t * tinyrl, int key);
bool_t tinyrl_key_end_of_line(tinyrl_t * tinyrl, int key);
bool_t tinyrl_key_kill(tinyrl_t * tinyrl, int key);
bool_t tinyrl_key_yank(tinyrl_t * tinyrl, int key);
bool_t tinyrl_key_crlf(tinyrl_t * tinyrl, int key);
bool_t tinyrl_key_up(tinyrl_t * tinyrl, int key);
bool_t tinyrl_key_down(tinyrl_t * tinyrl, int key);
bool_t tinyrl_key_left(tinyrl_t * tinyrl, int key);
bool_t tinyrl_key_right(tinyrl_t * tinyrl, int key);
bool_t tinyrl_key_backspace(tinyrl_t *tinyrl, int key);
bool_t tinyrl_key_backword(tinyrl_t *tinyrl, int key);
bool_t tinyrl_key_delete(tinyrl_t * tinyrl, int key);
bool_t tinyrl_key_clear_screen(tinyrl_t * tinyrl, int key);
bool_t tinyrl_key_erase_line(tinyrl_t * tinyrl, int key);
bool_t tinyrl_key_tab(tinyrl_t * tinyrl, int key);


/* define the class member data and virtual methods */
struct _tinyrl {
	const char *line;
	unsigned max_line_length;
	char *prompt;
	size_t prompt_size; /* strlen() */
	size_t prompt_len; /* Symbol positions */
	char *buffer;
	size_t buffer_size;
	bool_t done;
	bool_t completion_over;
	bool_t completion_error_over;
	unsigned point;
	unsigned end;
	tinyrl_completion_func_t *attempted_completion_function;
	tinyrl_keypress_fn_t *keypress_fn; /* keypress callback */
	int state;
#define RL_STATE_COMPLETING (0x00000001)
	char *kill_string;
#define NUM_HANDLERS 256
	tinyrl_key_func_t *handlers[NUM_HANDLERS];
	tinyrl_key_func_t *hotkey_fn;

	hist_t *hist; // History object
	vt100_t *term;
	void *context;		/* context supplied by caller
				 * to tinyrl_readline()
				 */
	char echo_char;
	bool_t echo_enabled;
	struct termios default_termios;
	bool_t isatty;
	char *last_buffer;	/* hold record of the previous
				buffer for redisplay purposes */
	unsigned int last_point; /* hold record of the previous
				cursor position for redisplay purposes */
	unsigned int last_line_size; /* The length of last_buffer */
	unsigned int width; /* Last terminal width. For resize */
	bool_t utf8;		/* Is the encoding UTF-8 */
};