<?php

declare(strict_types=1);

namespace Modules\Helpdesk\Http\Controllers;

use App\Http\Controllers\Controller;
use Illuminate\Http\RedirectResponse;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Auth;
use Illuminate\Support\Facades\Gate;
use Modules\Helpdesk\Models\Ticket;
use Modules\Helpdesk\Services\AttachmentService;

final class TicketAttachmentStoreController extends Controller
{
    /**
     * Store one or more ticket-level supporting files for an existing ticket.
     */
    public function __invoke(Request $request, Ticket $ticket, AttachmentService $attachments): RedirectResponse
    {
        Gate::authorize('update', $ticket);

        $maxUploadKilobytes = (int) config('helpdesk.max_upload_kb', 10240);
        $allowedMimes = (array) config('helpdesk.allowed_mimes', ['jpg', 'jpeg', 'png', 'pdf', 'txt', 'log', 'zip']);

        $request->validate([
            'attachments' => ['required', 'array', 'min:1'],
            'attachments.*' => ['required', 'file', 'max:'.$maxUploadKilobytes, 'mimes:'.implode(',', $allowedMimes)],
        ], [
            'attachments.required' => 'Choose at least one supporting file.',
            'attachments.*.file' => 'Each supporting file must be a valid uploaded file.',
        ]);

        $user = Auth::user();
        abort_if($user === null, 403);

        $uploadedFiles = $request->file('attachments', []);
        $uploadedFiles = is_array($uploadedFiles) ? array_values($uploadedFiles) : [$uploadedFiles];

        $attachments->storeMany($ticket, $uploadedFiles, (int) $user->id);

        $ticket->forceFill(['last_activity_at' => now()])->save();

        return redirect()
            ->route('helpdesk.tickets.show', $ticket)
            ->with('ticket-attachments-added', count($uploadedFiles).' supporting file'.(count($uploadedFiles) === 1 ? '' : 's').' attached.');
    }
}