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/* RCS Info: $Revision: 1.2 $ on $Date: 89/03/15 16:33:18 $
 *           $Source: /yew3/faustus/src/scrabble/RCS/tty.c,v $
 * Copyright (c) 1989 Wayne A. Christopher, U. C. Berkeley CS Dept
 *	 faustus@renoir.berkeley.edu, ucbvax!faustus
 * Permission is granted to modify and re-distribute this code in any manner
 * as long as this notice is preserved.  All standard disclaimers apply.
 *
 */

#include "scrabble.h"
#include <curses.h>
#undef bool

static WINDOW *boardwin, *scores, *summary, *dialog;
#ifdef notdef
static WINDOW *title;
#endif

static char lbchar[] = " `\"(<";
static char rbchar[] = " '\")>";

static int messline = 0;

#define bpos(px, py, x, y)	(px) = 3 * (x) + 4; (py) = (y) + 1;
#define MESS_SIZE		5
#define beep()			putc('\007', stderr); fflush(stderr);

static char *help[] = {
"Scrabble Version 1.0, by Wayne Christopher (faustus@renoir.Berkeley.EDU)    ",
"                                                                            ",
"    The rules of the game are the same as those of the board game, and will ",
"    not be described here.  The screen is divided up into a board area,     ",
"    which the player can move around in, a status and score window to the   ",
"    right, and a message window at the bottom.  A star appears by the name  ",
"    of the player whose turn it is, and if this is not a machine player the ",
"    commands below may be given.  The commands H, V, Q, and T terminate the ",
"    player's turn, assuming the word is valid.                              ",
"                                                                            ",
"Available commands are:                                                     ",
"    h, j, k, l : Move the cursor around the board.                          ",
"    H          : Create a horizontal word at the cursor position.           ",
"    V          : Create a vertical word at the cursor position.             ",
"    T          : Trade in a number of tiles for new tiles.                  ",
"    S          : Save the game into a file.                                 ",
"    R          : Restore a game from a file (loses the current game).       ",
"    A          : Ask for advice from the computer.                          ",
"    Q          : Quit the game.                                             ",
"    ^L         : Redraw the screen.                                         ",
"    ?          : Print this help message.                                   "
} ;

void
tty_init(board_t *board, player_t *players[], int numplayers)
{
	int i, j;
	int x, y;

	initscr();
	noecho();
	crmode();

#ifdef notdef
	title = newwin(2, 80, 0, 0);
#endif
	boardwin = newwin(17, 51, 0, 0);
	scores = newwin(9, 29, 3, 51);
	summary = newwin(3, 29, 14, 51);
	dialog = newwin(0, 80, 18, 0);

#ifdef notdef
	/* Draw the title... */
	wmove(title, 0, 7);
	wprintw(title, "Scrabble %s, by %s (%s)", VERSION, AUTHOR, ADDRESS);
#endif

	/* Draw the board...  top and bottom... */
	for (i = 0; i < 15; i++) {
		wmove(boardwin, 0, 3 * i + 4);
		wprintw(boardwin, "%-2d", i);
		wmove(boardwin, 16, 3 * i + 4);
		wprintw(boardwin, "%-2d", i);
	}

	/* Left and right... */
	for (i = 0; i < 15; i++) {
		wmove(boardwin, 1 + i, 0);
		wprintw(boardwin, "%2d", i);
		wmove(boardwin, 1 + i, 49);
		wprintw(boardwin, "%-2d", i);
	}
	for (i = 0; i < 15; i++)
		for (j = 0; j < 15; j++) {
			bpos(x, y, i, j);
			wmove(boardwin, y, x - 1);
			waddch(boardwin, lbchar[board->bonus[j][i]]);
			wmove(boardwin, y, x);
			waddch(boardwin, '.');
			wmove(boardwin, y, x + 1);
			waddch(boardwin, rbchar[board->bonus[j][i]]);
		}
	
	/* Draw the scores display... */
	wmove(scores, 0, 0);
	wprintw(scores, "      Scrabble %s", VERSION);
	wmove(scores, 1, 0);
	wprintw(scores, "   by %s", AUTHOR);

	wmove(scores, 3, 0);
	wprintw(scores, "   Name  Score   Letters");
	for (i = 0; i < numplayers; i++)
		tty_drawplayer(players[i], i, (i == 0) ? true : false);

	/* Draw the summary window. */
	tty_drawsummary(board, 0);

	/* The dialog window is blank. */

	wrefresh(boardwin);

	return;
}

void
tty_message(char *message)
{
	/* Print the message and clear the line below it. */
	messline = (messline + 1) % MESS_SIZE;
	if (messline < MESS_SIZE - 1) {
		wmove(dialog, messline + 1, 0);
		wclrtoeol(dialog);
	}
	wmove(dialog, messline, 0);
	wclrtoeol(dialog);
	wprintw(dialog, "%s", message);

	wrefresh(dialog);

	return;
}

char *
tty_question(char *message)
{
	static char buf[BSIZE];

	tty_message(message);
	wmove(dialog, messline, strlen(message) + 1);
	wrefresh(dialog);
	echo();
	nocrmode();
	wgetstr(dialog, buf);
	crmode();
	noecho();

	return (buf);
}

bool
tty_confirm(char *message)
{
	char c;

	tty_message(message);
	wmove(dialog, messline, strlen(message) + 1);
	wrefresh(dialog);
	c = wgetch(dialog);

	if ((c == 'y') || (c == 'Y'))
		return (true);
	else
		return (false);
}

/* Let the player move to a place in the board, type 'h' or 'v', then enter
 * a word.  Other commands are 'T', 'S', 'R', 'Q', and '?'.
 */

command_t
tty_command(board_t *board, player_t *player, move_t *mv)
{
	int x = 7, y = 7;
	int px, py;
	bool horiz = false, done = false;
	char *word, buf[BSIZE];
	char c;
	int i;

	for (;;) {
		bpos(px, py, x, y);
		wmove(boardwin, py, px);
		wrefresh(boardwin);
		c = wgetch(boardwin);
		switch (c) {
		    case '\014':
			tty_update();
			break;

		    case 'h':
			if (x > 0)
				x--;
			else {
				beep();
			}
			break;

		    case 'j':
			if (y < SIZE - 1)
				y++;
			else {
				beep();
			}
			break;

		    case 'k':
			if (y > 0)
				y--;
			else {
				beep();
			}
			break;

		    case 'l':
			if (x < SIZE - 1)
				x++;
			else {
				beep();
			}
			break;

		    case 'H':
			horiz = true;
			done = true;
			break;

		    case 'V':
			horiz = false;
			done = true;
			break;

		    case 'T':
		   	 return (TRADEIN);

		    case 'S':
			return (SAVE);

		    case 'R':
			return (RESTORE);

		    case 'A':
			return (ADVICE);

		    case 'Q':
			if (tty_confirm("Really quit?"))
				return (QUIT);
			else
				break;

		    case '?':
			return (HELP);

		    default:
			beep();
			break;
		}

		if (done)
			break;
	}

	if (horiz)
		sprintf(buf, "Horiz word at (%d, %d):", x, y);
	else
		sprintf(buf, "Vert word at (%d, %d):", x, y);

	word = tty_question(buf);

	if (strlen(word) > SIZE)
		word[SIZE] = '\0';

	mv->word = strsav(word);
	mv->x = x;
	mv->y = y;
	mv->length = strlen(word);
	mv->horiz = horiz;
	mv->points = 0;

	for (i = 0; i < SIZE; i++)
		mv->wild[i] = false;

	for (i = 0; i < mv->length; i++) {
		if (!isalpha(mv->word[i])) {
			tty_message("Invalid word.");
			return (NOTHING);
		} else if (isupper(mv->word[i])) {
			mv->word[i] = tolower(mv->word[i]);
		}
	}

	return (MOVE);
}

void
tty_drawplayer(player_t *player, int pos, bool up)
{
	int i;

	wmove(scores, pos + 5, 0);
	wprintw(scores, " %c %-6.6s %3d ", up ? '*' : ' ', player->name,
			player->score);
	for (i = 0; i < player->numworking; i++)
		wprintw(scores, " %c", player->working[i]);
	wclrtoeol(scores);
	wmove(scores, pos + 5, 0);
	wrefresh(scores);

	return;
}

void
tty_drawsummary(board_t *board, int turn)
{
	wmove(summary, 0, 0);
	wprintw(summary, "     Game turn:  %d   ", turn);
	wmove(summary, 1, 0);
	wprintw(summary, "    Tiles left:  %d   ", board->numleft);
	wrefresh(summary);

	return;
}

void
tty_drawmove(board_t *board, move_t *mv, player_t *player)
{
	int i, x, y;
	char c;
	char buf[BSIZE];

	for (i = 0; i < mv->length; i++) {
		c = mv->word[i];
		if (!mv->wild[i])
			c = toupper(c);
		if (mv->horiz) {
			bpos(x, y, mv->x + i, mv->y);
		} else {
			bpos(x, y, mv->x, mv->y + i);
		}

assert((x >= 0) && (x < 51) && (y >= 0) && (y < 17));

		wmove(boardwin, y, x);
		waddch(boardwin, c);
	}
	wrefresh(boardwin);
	sprintf(buf, "%s: \"%s\" at (%d, %d), %s, %d points.", player->name,
			mv->word, mv->x, mv->y, mv->horiz ? "horiz" : "vert",
			mv->points);
	tty_message(buf);

	return;
}

void
tty_givehelp()
{
	WINDOW *hwin = newwin(24, 80, 0, 0);
	int i;

	wclear(hwin);
	overwrite(hwin, stdscr);
	wrefresh(hwin);
	wrefresh(stdscr);

	for (i = 0; i < sizeof (help) / sizeof (help[0]); i++) {
		wmove(hwin, i, 0);
		wprintw(hwin, "%s", help[i]);
	}

	wmove(hwin, i + 1, 0);
	wprintw(hwin, "Hit return to continue...");
	wrefresh(hwin);
	(void) wgetch(hwin);

	wclear(hwin);
	wrefresh(hwin);

	delwin(hwin);

	touchwin(boardwin);
	touchwin(scores);
	touchwin(summary);
	touchwin(dialog);

	tty_update();

	return;
}

void
tty_update()
{
	wrefresh(boardwin);
	wrefresh(scores);
	wrefresh(summary);
	wrefresh(dialog);

	return;
}

void
tty_cleanup()
{
	move(23, 0);
	clrtoeol();
	refresh();
	endwin();
	return;
}
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