<?php

namespace wcf\system\message\quote;

use wcf\system\cache\runtime\UserProfileRuntimeCache;
use wcf\system\SingletonFactory;
use wcf\system\WCF;

/**
 * Default implementation for quote handlers.
 *
 * @author  Alexander Ebert
 * @copyright   2001-2019 WoltLab GmbH
 * @license GNU Lesser General Public License <http://opensource.org/licenses/lgpl-license.php>
 */
abstract class AbstractMessageQuoteHandler extends SingletonFactory implements IMessageQuoteHandler
{
    /**
     * template name
     * @var string
     */
    public $templateName = 'messageQuoteList';

    /**
     * list of quoted message
     * @var QuotedMessage[]
     */
    public $quotedMessages = [];

    /**
     * @inheritDoc
     */
    public function render(array $data, $supportPaste = false)
    {
        $messages = $this->getMessages($data);
        $this->overrideIsFullQuote($messages);

        $userIDs = $userProfiles = [];
        foreach ($messages as $message) {
            $userID = $message->getUserID();
            if ($userID) {
                $userIDs[] = $userID;
            }
        }

        if (!empty($userIDs)) {
            $userIDs = \array_unique($userIDs);
            $userProfiles = UserProfileRuntimeCache::getInstance()->getObjects($userIDs);
        }

        WCF::getTPL()->assign([
            'messages' => $messages,
            'supportPaste' => $supportPaste,
            'userProfiles' => $userProfiles,
        ]);

        return WCF::getTPL()->fetch($this->templateName);
    }

    /**
     * @inheritDoc
     */
    public function renderQuotes(array $data, $render = true, $renderAsString = true)
    {
        $messages = $this->getMessages($data);
        $this->overrideIsFullQuote($messages);

        $renderedQuotes = [];
        foreach ($messages as $message) {
            foreach ($message as $quoteID => $quote) {
                $quotedMessage = $message->getFullQuote($quoteID);
                if ($render && ($renderAsString && $quotedMessage === null)) {
                    $renderedQuotes[] = MessageQuoteManager::getInstance()->renderQuote(
                        $message->object,
                        $quote,
                        $renderAsString
                    );
                } else {
                    $renderedQuotes[] = MessageQuoteManager::getInstance()->renderQuote(
                        $message->object,
                        ($quotedMessage === null ? $quote : $quotedMessage),
                        $renderAsString
                    );
                }
            }
        }

        return $renderedQuotes;
    }

    /**
     * Overrides the full quote flag for given message.
     *
     * @param QuotedMessage[] $messages
     */
    protected function overrideIsFullQuote(array $messages)
    {
        foreach ($messages as $message) {
            $quoteIDs = $message->getQuoteIDs();
            foreach ($quoteIDs as $quoteID) {
                $message->setOverrideIsFullQuote($quoteID, MessageQuoteManager::getInstance()->isFullQuote($quoteID));
            }
        }
    }

    /**
     * Returns a list of QuotedMessage objects.
     *
     * @param mixed[][] $data
     * @return  QuotedMessage[]
     */
    abstract protected function getMessages(array $data);
}