<?php
namespace Isekai\UserPoints\Service;

use MediaWiki\Config\Config;
use MediaWiki\User\User;
use MediaWiki\MediaWikiServices;

class IsekaiUserDailySignFactory {
    /** @var MediaWikiServices */
    private $services;

    /** @var \Config */
    private $config;

    /** @var array */
    private $pointConfig;

    /** @var array */
    private $dailySignConfig;

    private static $instances;

    public function __construct(MediaWikiServices $services) {
        $this->services = $services;
        $this->config = $services->getMainConfig();
        $this->pointConfig = $this->config->get('IsekaiUserPointConfig');
        $this->dailySignConfig = $this->config->get('IsekaiUserDailySignConfig');
    }

    /**
     * @param User $user
     * @return IsekaiUserDailySign|null
     */
    public function newFromUser(User $user) {
        if (!$this->dailySignConfig) {
            throw new \Exception('$wgIsekaiUserDailySignConfig is not configured');
        }

        if (!$user->isRegistered()) {
            return null;
        }

        $userId = $user->getId();
        $cacheKey = $userId;
        if (!isset(self::$instances[$cacheKey])) {
            self::$instances[$cacheKey] = new IsekaiUserDailySign($user, $this->pointConfig, $this->dailySignConfig, $this->services);
        }
        return self::$instances[$cacheKey];
    }

    /**
     * @param int $userId
     * @return IsekaiUserDailySign|null
     */
    public function newFromUserId($userId) {
        $user = $this->services->getUserFactory()->newFromId($userId);
        if (!$user) {
            return null;
        }
        return $this->newFromUser($user);
    }
}