/*      $OpenBSD: getguess.c,v 1.15 2016/01/04 17:33:24 mestre Exp $    */
/*      $NetBSD: getguess.c,v 1.5 1995/03/23 08:32:43 cgd Exp $ */

/*
 * Copyright (c) 1983, 1993
 *      The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include <ctype.h>
#include <curses.h>
#include <termios.h>
#include <unistd.h>

#include "hangman.h"

/*
 * getguess:
 *      Get another guess
 */
void
getguess(void)
{
        int     i;
        unsigned char   ch, uch;
        bool    correct;

        leaveok(stdscr, FALSE);
        for (;;) {
                move(PROMPTY, PROMPTX + sizeof "Guess: ");
                refresh();
                ch = readch();
                if (isalpha(ch)) {
                        if (isupper(ch))
                                ch = tolower(ch);
                        if (Guessed[ch - 'a']) {
                                move(MESGY, MESGX);
                                clrtoeol();
                                mvprintw(MESGY, MESGX, "Already guessed '%c'",
                                    ch);
                        } else
                                break;
                } else if (isdigit(ch)) {
                        if (Guessed[ch - '0' + 26]) {
                                move(MESGY, MESGX);
                                clrtoeol();
                                mvprintw(MESGY, MESGX, "Already guessed '%c'",
                                    ch);
                        } else
                                break;
                } else
                        if (ch == CTRL('D'))
                                die(0);
                        else {
                                move(MESGY, MESGX);
                                clrtoeol();
                                mvprintw(MESGY, MESGX,
                                    "Not a valid guess: '%s'", unctrl(ch));
                        }
        }
        leaveok(stdscr, TRUE);
        move(MESGY, MESGX);
        clrtoeol();

        if (isalpha(ch))
                Guessed[ch - 'a'] = TRUE;
        else
                Guessed[ch - '0' + 26] = TRUE;
        correct = FALSE;
        uch = toupper(ch);
        for (i = 0; Word[i] != '\0'; i++)
                if (Word[i] == ch) {
                        Known[i] = ch;
                        correct = TRUE;
                } else if (Word[i] == uch) {
                        Known[i] = uch;
                        correct = TRUE;
                }
        if (!correct)
                Errors++;
}

/*
 * readch;
 *      Read a character from the input
 */
unsigned char
readch(void)
{
        int     cnt;
        char    ch;

        cnt = 0;
        for (;;) {
                if (read(STDIN_FILENO, &ch, sizeof ch) <= 0) {
                        if (++cnt > 100)
                                die(0);
                } else
                        if (ch == CTRL('L')) {
                                wrefresh(curscr);
                                mvcur(0, 0, curscr->_cury, curscr->_curx);
                        } else
                                return ch;
        }
}