<?php
namespace ProVM\Common\Controller;

use Psr\Http\Message\ResponseInterface;
use Psr\Http\Message\ServerRequestInterface;
use ProVM\Common\Exception\Request\MissingArgument;
use ProVM\Common\Implement\Controller\Json;
use ProVM\Common\Service\Messages as Service;
use ProVM\Emails\Model\Message;
use function Safe\json_decode;

class Messages
{
    use Json;

    public function __invoke(ServerRequestInterface $request, ResponseInterface $response, Service $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 $service, \ProVM\Common\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 $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 $service, \ProVM\Common\Service\Attachments $attachmentsService): ResponseInterface
    {
        $body = $request->getBody();
        $json = json_decode($body->getContents());
        if (!isset($json->mailboxes)) {
            throw new MissingArgument('mailboxes', 'array', 'mailboxes names');
        }
        $output = [
            'mailboxes' => $json->mailboxes,
            'messages' => [],
            'message_count' => 0
        ];
        foreach ($json->mailboxes as $mailbox_name) {
            $messages = $service->grab($mailbox_name);
            foreach ($messages as $message) {
                if ($message->hasValidAttachments()) {
                    $attachmentsService->create($message);
                }
            }
            $output['messages'] = array_merge($output['messages'], $messages);
            $output['message_count'] += count($messages);
        }
        return $this->withJson($response, $output);
    }
}