<?php

namespace App\Http\Controllers;

use App\Http\Requests\StoreImageRequest;
use App\Http\Requests\UpdateImageRequest;
use App\Models\Image;
use Illuminate\Http\Response;
use Illuminate\Support\Facades\Storage;
use Symfony\Component\HttpFoundation\BinaryFileResponse;

class ImageController extends Controller
{
    /**
     * Display a listing of the resource.
     */
    public function index()
    {
        //
    }

    /**
     * Show the form for creating a new resource.
     */
    public function create()
    {
        //
    }

    /**
     * Store a newly created resource in storage.
     */
    public function store(StoreImageRequest $request)
    {
        //
    }

    /**
     * Display the specified resource.
     */
    public function show(Image $image, string $size = 'original') : BinaryFileResponse|Response
    {
        $server = request()->server;
        $headerEtag = md5($image->updated_at->format('U') . $image->id . '_' . $size);
        $headerExpires = $image->updated_at->addYear()->toRfc2822String();
        $headerLastModified = $image->updated_at->toRfc2822String();

        $requestModifiedSince =
            $server->has('HTTP_IF_MODIFIED_SINCE') &&
            $server->get('HTTP_IF_MODIFIED_SINCE') === $headerLastModified;

        $requestNoneMatch =
            $server->has('HTTP_IF_NONE_MATCH') &&
            $server->get('HTTP_IF_NONE_MATCH') === $headerEtag;

        $headers = [
            'Cache-Control' => 'max-age=0, must-revalidate, private',
            'Content-Disposition' => sprintf('inline; filename="%s"', $image->id . '_' . $size),
            'Etag' => $headerEtag,
            'Expires' => $headerExpires,
            'Last-Modified' => $headerLastModified,
            'Pragma' => 'no-cache',
        ];

        if ($requestModifiedSince || $requestNoneMatch) {
            return response('', 304)->withHeaders($headers);
        }

        return response()->file(Storage::disk('images')->path($image->album->id . '/' . $size . '/' . $image->id . '.avif'), $headers);
    }

    /**
     * Display the thumbnail of the specified resource.
     */
    public function thumbnail(Image $image) : BinaryFileResponse|Response
    {
        return $this->show($image, 'thumbnail');
    }

    /**
     * Display the lightbox of the specified resource.
     */
    public function lightbox(Image $image) : BinaryFileResponse|Response
    {
        return $this->show($image, 'lightbox');
    }

    /**
     * Display the lightbox of the specified resource.
     */
    public function download(Image $image) 
    {
        return Storage::disk('images')->download($image->album_id . '/original/' . $image->id . '.avif', name: $image->album->name . '_' . $image->id . '.avif');
    }

    /**
     * Show the form for editing the specified resource.
     */
    public function edit(Image $image)
    {
        //
    }

    /**
     * Update the specified resource in storage.
     */
    public function update(UpdateImageRequest $request, Image $image)
    {
        //
    }

    /**
     * Remove the specified resource from storage.
     */
    public function destroy(Image $image)
    {
        //
    }
}