<?php

namespace App\Game;

use App\Models\Card;

use Illuminate\Support\Collection;
use App\Game\Exceptions\NotEnoughCardsException;

class GameBoard
{
    /**
     * Collection of the cards on the board.
     */
    protected Collection $cards;

    /**
     * State of the cards on the board.
     */
    protected GameBoardState $state;

    /**
     * Create a new board.
     */
    public function __construct(GameBoardState $state)
    {
        $this->state = $state;
        $this->regenerate(new GameSettings);
    }

    /**
     * Return the cards.
     */
    public function getCards()
    {
        return $this->cards;
    }

    /**
     * Return the state
     */
    public function getState(): GameBoardState
    {
        return $this->state;
    }

    /**
     * Get the size of the board.
     */
    public function getSize(): int
    {
        return $this->state->getSize();
    }

    /**
     * Clear the game board.
     */
    public function clear(): void
    {
        $this->state->clear();
    }

    /**
     * Check if the board is in an ended state.
     * E.g: all cards is in a winning state.
     */
    public function hasGameEnded(): bool
    {
        return $this->state->isFull(GameBoardState::STATE_WIN);
    }

    /**
     * Regenerate the board with new cards.
     *
     * @throw NotEnoughCardsException
     */
    public function regenerate(GameSettings $settings): self
    {
        $num_cards = $this->getSize();
        $cards = Card::getBySettings($settings, $num_cards);

        if (count($cards) < $num_cards) {
            $message = sprintf("Impossible to generate cards: requested %d but only %d returned", $num_cards, count($cards));
            throw new NotEnoughCardsException($message);
        }

        $this->cards = $cards;

        // Reset the state if we set new cards.
        $this->clear();

        return $this;
    }
}