<?php

declare(strict_types=1);

namespace GitList\App\Controller;

use GitList\Repository\Index;
use GitList\SCM\File;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\HttpFoundation\ResponseHeaderBag;
use Twig\Environment;

class Blob
{
    public function __construct(protected Environment $templating, protected Index $index, protected int $perPage)
    {
    }

    public function show(string $repository, string $commitish): Response
    {
        $repository = $this->index->getRepository($repository);
        $blob = $repository->getBlob($commitish);
        $commit = $repository->getCommit($blob->getHash());
        $file = File::createFromBlob($blob);

        if ($file->isBinary()) {
            $response = new Response($file->getContents());
            $disposition = $response->headers->makeDisposition(ResponseHeaderBag::DISPOSITION_ATTACHMENT, $file->getName());
            $response->headers->set('Content-Disposition', $disposition);
            $response->headers->set('Content-Type', $file->getMimeType());

            return $response;
        }

        return new Response($this->templating->render('Blob/show.html.twig', [
            'repository' => $repository,
            'commit' => $commit,
            'blob' => $blob,
            'file' => $file,
        ]));
    }

    public function showRaw(string $repository, string $commitish): Response
    {
        $repository = $this->index->getRepository($repository);
        $blob = $repository->getBlob($commitish);
        $file = File::createFromBlob($blob);

        $response = new Response($file->getContents());
        $response->headers->set('Content-Type', $file->getMimeType());

        if ($file->isBinary()) {
            $disposition = $response->headers->makeDisposition(ResponseHeaderBag::DISPOSITION_ATTACHMENT, $file->getName());
            $response->headers->set('Content-Disposition', $disposition);
        }

        return $response;
    }

    public function blame(string $repository, string $commitish): Response
    {
        $repository = $this->index->getRepository($repository);
        $blob = $repository->getBlob($commitish);
        $blame = $repository->getBlame($commitish);

        return new Response($this->templating->render('Blob/blame.html.twig', [
            'repository' => $repository,
            'blame' => $blame,
            'blob' => $blob,
        ]));
    }

    public function showHistory(Request $request, string $repository, string $commitish): Response
    {
        $page = (int) $request->query->get('page', 1);
        $perPage = (int) $request->query->get('perPage', $this->perPage);

        $repository = $this->index->getRepository($repository);
        $blob = $repository->getBlob($commitish);
        $commits = $repository->getCommits($commitish, $page, $perPage);
        $commitGroups = [];

        foreach ($commits as $commit) {
            $commitGroups[$commit->getCommitedAt()->format('Y-m-d')][] = $commit;
        }

        return new Response($this->templating->render('Blob/history.html.twig', [
            'repository' => $repository,
            'blob' => $blob,
            'commitGroups' => $commitGroups,
            'commitish' => $commitish,
            'page' => $page,
            'nextPage' => $page + 1,
            'previousPage' => $page - 1,
            'perPage' => $perPage,
        ]));
    }
}