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#include "board.hpp"
#include "fen.hpp"
#include "moves.hpp"
#include <algorithm>
#include <cctype>
#include <cstdint>
#include <cstdio>
#include <cstdlib>
#include <print>
#include <string>
#include <vector>
Piece NonePiece = {
false,
NONE,
false,
};
#include <iostream>
bool isValidChessRank(char rank) {
if (rank >= '1' && rank <= '8') {
return true;
} else {
return false;
}
}
bool isValidChessFile(char rank) {
if (rank >= 'A' && rank <= 'H') {
return true;
} else {
return false;
}
}
void PrintMoves(const std::vector<Move> &moves) {
std::cout << "Moves (" << moves.size() << "):\n";
for (const Move &move : moves) {
std::cout << "(" << (int)move.From.file << ", " << (int)move.From.rank
<< ") -> (" << (int)move.To.file << ", " << (int)move.To.rank
<< ")\n";
}
}
int main(int argc, char **argv) {
std::string startingFen = "rnbqkbnr/pppppppp/8/8/8/8/8/RNBQKBNR w KQkq - 0 1";
if (argc < 1 || argc > 2) {
printf("wrong arg count, use: ./chess [optinal starting fen]\n");
return 1;
}
printf("arg count: %d\n", argc);
if (argc == 2) {
startingFen = argv[1];
}
board b;
b.turn = true;
b.castle = "";
b.halfMoveClock = 0;
b.MoveClock = 0;
for (int i = 0; i < 64; i++) {
b.pieces[i] = NonePiece;
};
setBoardFen(startingFen, &b);
printBoard(&b);
while (true) {
std::cout << "> ";
std::string command;
std::cin >> command;
std::cout << command << "\n";
transform(command.begin(), command.end(), command.begin(), ::toupper);
if (command == "EXIT") {
std::println();
std::cout << "Exiting...\n";
return 0;
}
if (command.length() != 4) {
std::cout << "Unknown Command, use EXIT to exit";
std::println();
continue;
}
if (!isValidChessFile(command[0])) {
std::cout << "ERROR: Expected valid file at first place";
std::println();
continue;
}
if (!isValidChessRank(command[1])) {
std::cout << "ERROR: Expected valid rank at second place";
std::println();
continue;
}
if (!isValidChessFile(command[2])) {
std::cout << "ERROR: Expected valid file at third place";
std::println();
continue;
}
if (!isValidChessRank(command[3])) {
std::cout << "ERROR: Expected valid rank at four place";
std::println();
continue;
}
// we know its a valid chess pos
int fromFile = command[0] - 'A';
int fromRank = '8' - command[1];
int toFile = command[2] - 'A';
int toRank = '8' - command[3];
std::cout << fromFile << "\n";
std::cout << fromRank << "\n";
std::cout << toFile << "\n";
std::cout << toRank << "\n";
Move move = {
{static_cast<uint8_t>(fromRank), static_cast<uint8_t>(fromFile)},
{static_cast<uint8_t>(toRank), static_cast<uint8_t>(toFile)}};
auto moves = GetLegalMoves(&b);
if (std::ranges::find(moves, move) != moves.end()) {
std::cout << "Move is legal!\n";
} else {
std::cout << "Move is not legal!\n";
PrintMoves(moves);
continue;
}
std::println();
PlayMove(move, &b);
b.MoveClock++;
b.turn = !b.turn;
printBoard(&b);
}
return EXIT_SUCCESS;
}
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