<?php

namespace App\Http\Controllers\Bo;

use App\Enums\Documents\LangEnum;
use App\Http\Controllers\Controller;
use App\Http\Requests\Bo\Documents\StoreDocumentRequest;
use App\Http\Requests\Bo\Documents\UpdateDocumentRequest;
use App\Http\Requests\Bo\UploadRequest;
use App\Models\Directory;
use App\Models\Document;
use App\Models\Tag;
use App\Traits\Controllers\ChangesModelOrder;
use Illuminate\Database\Eloquent\Builder;
use Illuminate\Http\Request;
use Illuminate\Http\UploadedFile;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Storage;
use Illuminate\Support\Str;
use Pion\Laravel\ChunkUpload\Exceptions\UploadMissingFileException;
use Pion\Laravel\ChunkUpload\Handler\HandlerFactory;
use Pion\Laravel\ChunkUpload\Receiver\FileReceiver;

class DocumentController extends Controller
{
    use ChangesModelOrder;

    /**
     * Create the controller instance.
     */
    public function __construct()
    {
        $this->authorizeResource(Document::class);
    }

    /**
     * Display a listing of the resource.
     *
     * @param \Illuminate\Http\Request $request
     * @return \Illuminate\View\View
     */
    public function index(Request $request): \Illuminate\View\View
    {
        /** @var \Illuminate\Database\Eloquent\Builder $query */
        $query = Document::query();
        $tags  = Tag::get();

        if ($request->search) {
            $this->searchQuery(
                $query,
                $request->search,
                null,
                'title',
            );
        }
        $searchFields = trans('validation.attributes.title');

        /** Search by tags */
        $query->when($request->tag, function ($query) use ($request) {
            $query->whereHas('tags', function (Builder $query) use ($request) {
                $query->where('id', $request->tag);
            });
        });

        /** Sort columns with a query */
        $this->sortQuery($query);

        $documentModels = $this->paginate($query);

        return view('bo.pages.documents.index', [
            'documentModels' => $documentModels,
            'searchFields'   => $searchFields,
            'searchTag'      => $request->tag,
            'tags'           => $tags
        ]);
    }

    /**
     * Show the form for creating a new resource.
     *
     * @param \App\Models\Document $document
     * @return \Illuminate\View\View
     */
    public function create(Document $document): \Illuminate\View\View
    {
        $documentsList = Document::query()->where('lang', LangEnum::fr)->get();
        $directories   = Directory::getChildrenDirectories();
        $tags          = Tag::get();

        return view('bo.pages.documents.create', [
            'documentModel' => $document,
            'documentsList' => $documentsList,
            'directories'   => $directories,
            'tags'          => $tags
        ]);
    }

    /**
     * Store a newly created resource in storage.
     *
     * @param \App\Http\Requests\Bo\Documents\StoreDocumentRequest $request
     * @return \Illuminate\Http\RedirectResponse
     */
    public function store(StoreDocumentRequest $request): \Illuminate\Http\RedirectResponse
    {
        return DB::transaction(function () use ($request) {
            $document = new Document();
            $document->fill($request->validated());
            if ($document->saveOrFail()) {
                $document->tags()->sync(collect($request->tags)->pluck('id'));
                return redirect()
                    ->route('bo.documents.edit', ['tenant' => \tenant(), 'document' => $document])
                    ->with('success', trans(
                        ':model a été créé',
                        ['model' => trans('models.classes.document')]
                    ));
            }
            return redirect()
                ->back()
                ->with('error', trans(
                    ':model n\'a pas été créé',
                    ['model' => trans('models.classes.document')]
                ));
        });
    }

    /**
     * Show the form for editing the specified resource.
     *
     * @param \App\Models\Document $document
     * @return \Illuminate\View\View
     */
    public function edit(Document $document): \Illuminate\View\View
    {
        $documentsList = Document::query()->where('lang', LangEnum::fr)->get();
        $directories   = Directory::getChildrenDirectories();
        $tags          = Tag::get();

        return view('bo.pages.documents.edit', [
            'documentModel' => $document,
            'documentsList' => $documentsList,
            'directories'   => $directories,
            'tags'          => $tags
        ]);
    }

    /**
     * Update the specified resource in storage.
     *
     * @param \App\Http\Requests\Bo\Documents\UpdateDocumentRequest $request
     * @param \App\Models\Document                                  $document
     * @return \Illuminate\Http\RedirectResponse
     */
    public function update(UpdateDocumentRequest $request, Document $document): \Illuminate\Http\RedirectResponse
    {
        return DB::transaction(function () use ($request, $document) {
            $document->fill($request->validated());
            $document->tags()->sync(collect($request->tags)->pluck('id'));
            if ($document->saveOrFail()) {
                return redirect()
                    ->route('bo.documents.edit', ['tenant' => \tenant(), 'document' => $document])
                    ->with('success', trans(
                        ':model a été mis à jour',
                        ['model' => trans('models.classes.document')]
                    ));
            }
            return redirect()
                ->back()
                ->with('error', trans(
                    ':model n\'a pas été mis à jour',
                    ['model' => trans('models.classes.document')]
                ));
        });
    }

    /**
     * Remove the specified resource from storage.
     *
     * @param \App\Models\Document $document
     * @return \Illuminate\Http\RedirectResponse
     */
    public function destroy(Document $document): \Illuminate\Http\RedirectResponse
    {
        /** @var array<string,string> */
        $previousQueries = [];
        \parse_str(\parse_url(url()->previous(), \PHP_URL_QUERY), $previousQueries);
        $document->tags()->sync([]);
        /** @var \App\Models\Document $documentChild */
        foreach ($document->children as $documentChild) {
            Document::removeDocument($documentChild);
            $documentChild->deleteOrFail();
        }
        if ($document->deleteOrFail()) {
            return redirect()
                ->route('bo.documents.index', array_merge(['tenant' => \tenant()], $previousQueries))
                ->with('warning', trans(
                    ':model a bien été supprimé',
                    ['model' => trans('models.classes.document')]
                ));
        }
        return redirect()
            ->back()
            ->with('error', trans(
                ':model n\'a pas été supprimé',
                ['model' => trans('models.classes.document')]
            ));
    }

    /**
     * Download the document
     *
     * @param string $tenant
     * @param string $uuid
     * @return \Symfony\Component\HttpFoundation\BinaryFileResponse
     */
    public function download(string $tenant, string $uuid): \Symfony\Component\HttpFoundation\BinaryFileResponse
    {
        $doc        = Document::where('uuid', $uuid)->firstOrFail();
        $pathToFile = public_path() . Storage::url(
            sprintf('docs/%s/%s.%s', $tenant, $doc->uuid, $doc->type)
        );
        return response()->download($pathToFile, $doc->path);
    }

    /**
     * @param \App\Http\Requests\Bo\UploadRequest $request
     * @return \Illuminate\Http\JsonResponse
     * @throws \Pion\Laravel\ChunkUpload\Exceptions\UploadMissingFileException Bla.
     */
    public function upload(UploadRequest $request)
    {
        // Create the file receiver.
        $receiver = new FileReceiver("file", $request, HandlerFactory::classFromRequest($request));
        // Check if the upload is success, throw exception or return response you need.
        if ($receiver->isUploaded() === false) {
            throw new UploadMissingFileException();
        }
        // Receive the file.
        $save = $receiver->receive();
        // Check if the upload has finished (in chunk mode it will send smaller files).
        if ($save->isFinished()) {
            // Save the file and return any response you need, current example uses `move` function.
            // If you are not using move, you need to manually delete the file: unlink($save->getFile()->getPathname()).
            return $this->saveFile($save->getFile(), $request->uuid);
        }
        // We are in chunk mode, lets send the current progress.
        $handler = $save->handler();
        return response()->json([
            "done"   => $handler->getPercentageDone(),
            'status' => true
        ]);
    }

    /**
     * @param \Illuminate\Http\UploadedFile $file
     * @param string|null                   $uuid
     * @return \Illuminate\Http\JsonResponse
     */
    protected function saveFile(UploadedFile $file, ?string $uuid): \Illuminate\Http\JsonResponse
    {
        /** @var \Illuminate\Filesystem\FilesystemAdapter */
        $disk = Storage::disk('docs');
        $uuid = $uuid ?: Str::uuid();

        /** @var \Illuminate\Http\UploadedFile $file */
        $filename = sprintf('%s/%s.%s', \tenant()->getKey(), $uuid, $file->guessExtension());
        $disk->putFileAs('', $file, $filename);

        return response()->json([
            'uid' => $uuid,
        ]);
    }
}