#include <stdio.h>
#include <readline/readline.h>
#include "global.h"
#include "build.h"
#include <ncurses.h>

static int	input_available = 0;
static char input_char;
char		input_line[PATLEN + 1];

bool interpret(int c) {
	input_char		= c;
	input_available = 1;
	rl_callback_read_char();

	return 0;
}

static int getc_function(FILE *ignore) {
	UNUSED(ignore);

	input_available = 0;
	return (int)input_char;
}

static int input_available_hook() {
	return input_available;
}

static void redisplay_function() {
	window_change |= CH_INPUT;
}

static void callback_handler(char *line) {
	if(!line) { return; }

	switch(input_mode) {
		case INPUT_NORMAL:
			strncpy(input_line, line, PATLEN);
			search(input_line);
			curdispline = 0;
			PCS_reset();
			current_page = 0;
			break;
		case INPUT_CHANGE_TO:
			strncpy(newpat, line, PATLEN);
			change	   = calloc(totallines, sizeof(*change));
			input_mode = INPUT_CHANGE;
			horswp_field();
			return;
	}

	switch(field) {
		case CHANGE:
			input_mode = INPUT_CHANGE_TO;
			break;
		case DEFINITION:
		case FILENAME:
			if(totallines == 1) { editref(0); }
			break;
	}
}

static int ctrl_z() {
	kill(0, SIGTSTP);
	return 0;
}

static int toggle_caseless() {
	if(caseless == false) {
		caseless = true;
		postmsg2("Caseless mode is now ON");
	} else {
		caseless = false;
		postmsg2("Caseless mode is now OFF");
	}
	egrepcaseless(caseless); /* turn on/off -i flag */
	return 0;
}

static int rebuild_reference() {
	if(isuptodate == true) {
		postmsg("The -d option prevents rebuilding the symbol database");
		return (false);
	}
	exitcurses();
	freefilelist(); /* remake the source file list */
	makefilelist();
	rebuild();
	if(errorsfound == true) {
		errorsfound = false;
		askforreturn();
	}
	entercurses();
	postmsg(""); /* clear any previous message */
	totallines = 0;
	disprefs   = 0;
	return (true);
}

void rlinit() {
	rl_catch_signals		= 0;
	rl_catch_sigwinch		= 0;
	rl_prep_term_function	= NULL;
	rl_deprep_term_function = NULL;
	rl_change_environment	= 0;

	rl_getc_function		= getc_function;
	rl_input_available_hook = input_available_hook;
	rl_redisplay_function	= redisplay_function;
	rl_callback_handler_install("", callback_handler);

	rl_bind_key(7,
		rl_rubout);	   // XXX: 7 is backspace for some reason (on my system anyways?)
	rl_bind_key(KEY_BACKSPACE, rl_rubout);

	rl_bind_key(EOF, myexit);
	rl_bind_key(ctrl('Z'), ctrl_z);
	rl_bind_key(ctrl('Z'), toggle_caseless);
	rl_bind_key(ctrl('R'), rebuild_reference);
	rl_bind_key(ESC, process_mouse);	   /* possible unixpc mouse selection */
	rl_bind_key(ctrl('X'), process_mouse); /* mouse selection */

	// rl_bind_key(ctrl('\\'), /**/);        /* bypass bindings */
}