<?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;
use ProVM\Emails\Model\Message;
use function Safe\json_decode;

class Messages
{
    use Json;

    public function __invoke(ServerRequestInterface $request, ResponseInterface $response, Service\Messages $service, int $mailbox_id): ResponseInterface
    {
        $mailbox = $service->getMailboxes()->get($mailbox_id);
        $messages = array_map(function(Message $message) {
            return $message->toArray();
        }, $service->getAll($mailbox->getName()));
        usort($messages, function($a, $b) {
            $d = $a['date_time'] - $b['date_time'];
            if ($d->days === 0) {
                $f = strcmp($a['from'], $b['from']);
                if ($f === 0) {
                    return strcmp($a['subject'], $b['subject']);
                }
                return $f;
            }
            return $d->format('%r%a');
        });
        $output = [
            'mailbox' => $mailbox->toArray(),
            'total' => count($messages),
            'messages' => $messages
        ];
        return $this->withJson($response, $output);
    }
    public function valid(ServerRequestInterface $request, ResponseInterface $response, Service\Messages $service, Service\Attachments $attachments, int $mailbox_id): ResponseInterface
    {
        $mailbox = $service->getMailboxes()->get($mailbox_id);
        $messages = array_values(array_filter(array_map(function(Message $message) use ($service, $attachments) {
            return $message->toArray();
        }, $service->getValid($mailbox->getName())), function($message) {
            return $message !== null;
        }));
        usort($messages, function($a, $b) {
            $d = strcmp($a['date_time'], $b['date_time']);
            if ($d === 0) {
                $f = strcmp($a['from'], $b['from']);
                if ($f === 0) {
                    return strcmp($a['subject'], $b['subject']);
                }
                return $f;
            }
            return $d;
        });
        $output = [
            'mailbox' => $mailbox->toArray(),
            'total' => count($messages),
            'messages' => $messages
        ];
        return $this->withJson($response, $output);
    }
    public function get(ServerRequestInterface $request, ResponseInterface $response, Service\Messages $service, int $message_id): ResponseInterface
    {
        $message = $service->getRepository()->fetchById($message_id);
        return $this->withJson($response, ['message' => $message->toArray()]);
    }
    public function grab(ServerRequestInterface $request, ResponseInterface $response, Service\Messages $service, \ProVM\Common\Service\Attachments $attachmentsService, $mailbox_id): ResponseInterface
    {
        $output = [
            'mailbox_id' => $mailbox_id,
            'messages' => [],
            'count' => 0
        ];
        $mailbox = $service->getMailboxes()->get($mailbox_id);
        $messages = $service->grab($mailbox->getName());
        foreach ($messages as $message_id) {
            $message = $service->getLocalMessage($message_id);
            if ($message->hasValidAttachments()) {
                $attachmentsService->create($message->getId());
            }
        }
        $output['messages'] = $messages;
        $output['count'] = count($messages);
        return $this->withJson($response, $output);
    }
    public function schedule(ServerRequestInterface $request, ResponseInterface $response, Service\Messages $service, Service\Jobs $jobsService): ResponseInterface
    {
        $body = $request->getBody();
        $json = json_decode($body);
        if (!isset($json->messages)) {
            throw new MissingArgument('messages', 'array', 'messages IDs');
        }
        $output = [
            'messages' => $json->messages,
            'scheduled' => 0
        ];
        foreach ($json->messages as $message_id) {
            if ($jobsService->queue('attachments:grab', [$message_id])) {
                $message = $service->getRepository()->fetchById($message_id);
                $message->doesHaveScheduledDownloads();
                $service->getRepository()->save($message);
                $output['scheduled'] ++;
            }
        }
        return $this->withJson($response, $output);
    }
}