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#include "repl.hpp"
#include "board.hpp"
#include "moves.hpp"
#include <algorithm>
#include <cctype>
#include <cstdint>
#include <cstdlib>
#include <iostream>
#include <print>
#include <string>
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;
}
}
int startREPL(Board *b) {
printBoard(b);
while (true) {
std::cout << "> ";
std::string command;
std::cin >> command;
std::transform(command.begin(), command.end(), command.begin(), ::toupper);
if (command == "EXIT") {
std::println();
std::cout << "Exiting...\n";
return EXIT_SUCCESS;
}
if (command == "BOARD") {
printBoard(b);
continue;
}
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 << "Invalid move!";
std::println();
PrintMoves(moves);
continue;
}
std::println();
PlayMove(move, b);
b->MoveClock++;
b->turn = !b->turn;
printBoard(b);
}
}
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";
}
}
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