/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * AnnaConnect is a silly little text-based connect 4 game c:
 * Copyright (C) 2025 Anna Snoeijs. anna.snoeijs@hotmail.com
 *
 * This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 2 of the License
 *  (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
#include <stdio.h>
#include <stdint.h>
#include <getopt.h>
#include "macros.h"
#include "config.h"
#include "logic.h"
#include "types.h"
#include "ui.h"

#define VERSION 0.0.5

#define VERSIONSTRING \
	"AnnaConnect version "XSTR(VERSION)", Copyright (C) Anna Snoeijs\n"

// The LISENCE file
// Not null-terminated so need pointers for both start and end
extern char _binary_LICENSE_start[];
extern char _binary_LICENSE_end[];

int main( int argc, char *argv[] ){
	// Parse options
	for(;;){
		// Allowed options
		static struct option long_options[] = {
			{ "help",    no_argument, NULL, 'h' },
			{ "license", no_argument, NULL, 'l' },
			{ "version", no_argument, NULL, '\0' },
			{ 0 }
		};
		// Index of current option
		int option_index = 0;
		// Get next option
		char c = getopt_long( argc, argv, "hl", long_options, &option_index );
		if( c == -1 ) break;
		// Handle option
		switch( c ){
			case '\0': // Any option without shorthand
				switch( option_index ){
					case 2: // --version
						printf( VERSIONSTRING );
					return 0;
					default:
						fprintf(
							stderr,
							"%s: unhandled option \'--%s\' \n",
							argv[0],
							long_options[ option_index ].name
						 );
					break;
				}
			break;
			case 'h': // --help
				printf( "Usage: %s [OPTIONS]\n\n", argv[0] );
				for( int i = 0; long_options[i].name != NULL; i++ ){
					if( long_options[i].val != '\0' )
					     printf( " -%c --", long_options[i].val );
					else printf(  "    --" );
					printf( long_options[i].name );
					putchar( '\n' );
				}
			return 0;
			case 'l': // --license
				for(
					char *p = _binary_LICENSE_start;
					p != _binary_LICENSE_end;
					p++
				){
					putchar( *p );
				}
			return 0;
		}
	}
	// Check for unhandled options
	if( optind < argc ) {
		fprintf( stderr, "non-option ARGV-elements: " );
		while( optind < argc )
			printf( "%s ", argv[optind++] );
		putchar( '\n' );
	}
	// Start the actual program
	printf(
		VERSIONSTRING
		"AnnaConnect comes with ABSOLUTELY NO WARRANTY\n"
		"This is free software, and you are welcome to redistribute it\n"
		"under certain condtions. See `%s --license`\n", argv[0]
	);
	// board, innit?
	initBoard();
	board_t playboard = {
		.player = 0,
		.column = {0},
		.height = {0},
	};
	wins_t wins = {
		.count0 = {
			.total = 0,
			.vertical = 0,
			.horizontal = 0,
			.diagonalUp = 0,
			.diagonalDown = 0,
		},
		.count1 = {
			.total = 0,
			.vertical = 0,
			.horizontal = 0,
			.diagonalUp = 0,
			.diagonalDown = 0,
		},
		.win0 = {0},
		.win1 = {0},
	};
	// Begin loopin
	for(;; playboard.player = !playboard.player ){
		move_t move = askMove();
		int column = askColumn( playboard, move );
		playMove( &playboard, move, column );
		calcWins( &wins, playboard );
		updateBoard( wins, playboard, move, column );
	}
}