<?php

namespace App\Service\SnipContent;

use App\Entity\Snip;
use App\Entity\SnipContent;
use App\Entity\User;
use Doctrine\ORM\EntityManagerInterface;

readonly class SnipContentDB implements SnipContentInterface
{
    public function __construct(
        private Snip                   $snip,
        private User                   $user,
        private EntityManagerInterface $em,
    ) {}

    public function update(string $snipContents): void
    {
        // Create new snipContent entity with previous one as parent
        $content = new SnipContent();
        $content->setText($snipContents);
        $content->setSnip($this->snip);
        if ($this->snip->getSnipContents()->count() > 0) {
            $content->setParent($this->snip->getSnipContents()->last());
        }

        $this->em->persist($content);
        $this->em->flush();
        
        $this->snip->setActiveCommit($content->getId());
        $this->em->persist($this->snip);
        $this->em->flush();
    }

    public function get(): string
    {
        // Return the content of the latest snipContent entity
        return $this->snip->getSnipContents()->last()->getText();
    }

    public function getHistory(): array
    {
        // Return all snipContent entities (by parent)
        return array_map(fn(SnipContent $content) => $content->getId(), $this->snip->getSnipContents()->toArray());
    }

    public function setCommit(string $commit): void
    {
        $this->snip->setActiveCommit($commit);
        $this->em->persist($this->snip);
        $this->em->flush();
    }

    public function getCommit(): string
    {
        return $this->snip->getActiveCommit();
    }

    public function delete(): void
    {
        // Cleanup the history
    }
}