@andreabiagini5/applicazioni-e-servizi-web-project/server/services/bot.js

Project for Applicazioni e Servizi Web.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.getMove = void 0;
const Move_1 = require("../models/Move");
const prolog_1 = require("../prolog/prolog");
const getMove = async (board) => {
    const parsedBoard = parseBoard(board);
    const goal = `best_move(${parsedBoard}, Best).`;
    let result;
    try {
        result = await (0, prolog_1.query)(goal);
    }
    catch (error) {
        console.error('Error in Prolog engine:', error);
        return undefined;
    }
    if (!result || result.length === 0) {
        console.error('No results from Prolog');
        return undefined;
    }
    const move = result[0];
    try {
        return parseMove(move);
    }
    catch (error) {
        console.error('Error parsing move result:', error);
        return undefined;
    }
};
exports.getMove = getMove;
// TODO | Randa: Here I am manually inverting coordinates, maybe there's a better way to do it.
const parseMove = (move) => {
    // The move format is 'Best = cell(2,2)'"
    const regex = /^Best = cell\((\d+),(\d+)\)$/;
    const match = move.match(regex);
    if (!match) {
        throw new Error('Invalid move format');
    }
    const x = parseInt(match[1], 10);
    const y = parseInt(match[2], 10);
    if (isNaN(x) || isNaN(y)) {
        throw new Error('Invalid move coordinates');
    }
    return Move_1.MoveFactory.create(y, x);
};
const parseBoard = (Board) => {
    const height = Board.height;
    const width = Board.width;
    const cells = Board.state;
    const cellList = cells
        .flatMap((row, rowIndex) => row.flatMap((cell, colIndex) => {
        if (!cell.pile)
            return [];
        const owner = cell.pile.owner;
        return [
            `cell(${colIndex}, ${rowIndex}, ${owner === 'bot' ? 'me' : 'opponent'}, ${cell.pile.numberOfGrains})`,
        ];
    }))
        .join(', ');
    return `board(${width}, ${height}, [${cellList}])`;
};
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