<?php

namespace Isekai\UserPoints\Quests;

use MediaWiki\MediaWikiServices;
use User;

use Isekai\UserPoints\Service\IsekaiUserPointsFactory;
use Isekai\UserPoints\Utils;
use MediaWiki\Session\SessionManager;

class QuestsUtils {
    public const SESSION_KEY_QUEST_COMPLETE_NOTIFICATION = 'IsekaiQuests::questCompleteNotification';

    public static function getUserQuestCompleteNum(User $user, string $questType, string $periodTime) {
        $dbr = MediaWikiServices::getInstance()->getDBLoadBalancer()->getConnection(DB_REPLICA);

        $res = $dbr->newSelectQueryBuilder()
            ->from('isekai_user_quests_record')
            ->where([
                'user_id' => $user->getId(),
                'quest_type' => $questType,
                'period_time' => $periodTime,
            ])->field('quest_complete_num')
            ->fetchField();

        if ($res === false) {
            return 0;
        }

        return intval($res);
    }

    public static function setUserQuestCompleteNum(User $user, string $questType, string $periodTime, int $num) {
        $dbr = MediaWikiServices::getInstance()->getDBLoadBalancer()->getConnection(DB_REPLICA);
        $dbw = MediaWikiServices::getInstance()->getDBLoadBalancer()->getConnection(DB_PRIMARY);

        $res = $dbr->selectField('isekai_user_quests_record', 'id', [
            'user_id' => $user->getId(),
            'quest_type' => $questType,
            'period_time' => $periodTime,
        ], __METHOD__);

        if ($res === false) {
            $dbw->insert('isekai_user_quests_record', [
                'user_id' => $user->getId(),
                'quest_type' => $questType,
                'period_time' => $periodTime,
                'quest_complete_num' => $num,
            ], __METHOD__);
        } else {
            $dbw->update('isekai_user_quests_record', [
                'quest_complete_num' => $num,
            ], [
                'id' => $res,
            ], __METHOD__);
        }
    }

    public static function onQuestComplete(User $user, string $questType, array $questConfig) {
        $services = MediaWikiServices::getInstance();

        $periodQuestNumber = $questConfig['periodQuestNumber'];
        $periodType = $questConfig['periodType'];
        $pointsConfig = $questConfig['points'];

        $periodTime = QuestsUtils::getPeriodTime($periodType);

        $completeNum = QuestsUtils::getUserQuestCompleteNum($user, $questType, $periodTime);

        if ($completeNum > $periodQuestNumber) {
            return false;
        }

        $deltaPoints = [];

        /** @var IsekaiUserPointsFactory */
        $userPointsFactory = $services->getService('IsekaiUserPoints');
        foreach ($pointsConfig as $pointType => $pointConfig) {
            $userPoints = $userPointsFactory->newFromUser($user, $pointType);

            if ($userPoints) {
                $expireTime = $pointConfig['expireTime'] ?? -1;
                $pointsAddConfig = $pointConfig['points'];

                if (count($pointsAddConfig) > 0) {
                    // 获取当前任务完成次数对应的积分数量
                    $periodIndex = $completeNum % count($pointsAddConfig);
                    $pointsAdd = $pointsAddConfig[$periodIndex];

                    $userPoints->addPoints($pointsAdd, $expireTime, 'quests', $questType);

                    $deltaPoints[$pointType] = $pointsAdd;
                }
            }
        }

        $completeNum ++;
        QuestsUtils::setUserQuestCompleteNum($user, $questType, $periodTime, $completeNum);

        return [
            'completeNum' => $completeNum,
            'deltaPoints' => $deltaPoints,
        ];
    }

    /**
     * Get period time string from period type
     * @param string $periodType
     * @return string
     */
    public static function getPeriodTime($periodType = 'daily') {
        switch ($periodType) {
            case 'daily':
                return date('Y-m-d');
            case 'weekly':
                return date('Y-W') . 'week';
            case 'monthly':
                return date('Y-m');
        }
    }

    public static function setQuestCompleteNotification(string $questType, array $deltaPoints, $completeNum = null, ?array $questConfig = null) {
        $sesssionManager = SessionManager::getGlobalSession();

        $resultPointDelta = [];
        foreach ($deltaPoints as $pointType => $delta) {
            $pointName = Utils::getPointName($pointType);
            $pointIcon = Utils::getPointIcon($pointType);

            $resultPointDelta[] = [
                'point_type' => $pointType,
                'name' => $pointName,
                'icon' => $pointIcon,
                'points' => $delta,
            ];
        }

        $notificationData = [
            'questType' => $questType,
            'deltaPoints' => $resultPointDelta,
        ];

        if ($questConfig) {
            $notificationData['completeNum'] = $completeNum;
            $notificationData['periodQuestNumber'] = $questConfig['periodQuestNumber'];
            $notificationData['periodType'] = $questConfig['periodType'];
        }

        $sesssionManager->set(self::SESSION_KEY_QUEST_COMPLETE_NOTIFICATION, $notificationData);
    }
}