<?php
namespace ProVM\Common\Controller;

use ProVM\Common\Exception\Request\MissingArgument;
use Psr\Http\Message\ResponseInterface;
use Psr\Http\Message\ServerRequestInterface;
use ProVM\Common\Implement\Controller\Json;
use ProVM\Common\Service\Attachments as Service;
use ProVM\Emails\Model\Attachment;

class Attachments
{
    use Json;

    public function __invoke(ServerRequestInterface $request, ResponseInterface $response, Service $service): ResponseInterface
    {
        $attachments = array_map(function(Attachment $attachment) {
            return $attachment->toArray();
        },$service->getAll());
        $output = [
            'total' => count($attachments),
            'attachments' => $attachments
        ];
        return $this->withJson($response, $output);
    }
    public function grab(ServerRequestInterface $request, ResponseInterface $response, Service $service, \ProVM\Common\Service\Jobs $jobsService): ResponseInterface
    {
        $body = $request->getBody();
        $json = \Safe\json_decode($body->getContents());
        if (!isset($json->messages)) {
            throw new MissingArgument('messages', 'array', 'message UIDs');
        }
        $output = [
            'messages' => $json->messages,
            'total' => count($json->messages),
            'saved' => [
                'attachments' => [],
                'total' => 0
            ]
        ];
        foreach ($json->messages as $message_id) {
            if (!$jobsService->isPending($message_id)) {
                continue;
            }
            if ($service->grab($message_id)) {
                $job = $jobsService->find($message_id);
                $jobsService->execute($job->getId());
                $output['saved']['attachments'] []= $job->toArray();
                $output['saved']['total'] ++;
            }
        }
        return $this->withJson($response, $output);
    }
}