<?php
namespace ProVM\Common\Controller;

use Ddeboer\Imap\MailboxInterface;
use ProVM\Common\Implement\Controller\Json;
use ProVM\Emails\Repository\Mailbox;
use Psr\Http\Message\ResponseInterface;
use Psr\Http\Message\ServerRequestInterface;
use ProVM\Common\Service\Emails as Service;
use Psr\Log\LoggerInterface;
use Safe\Exceptions\FilesystemException;

class Emails
{
    use Json;

    public function __construct(LoggerInterface $logger)
    {
        $this->setLogger($logger);
    }

    protected LoggerInterface $logger;
    public function getLogger(): LoggerInterface
    {
        return $this->logger;
    }
    public function setLogger(LoggerInterface $logger): Emails
    {
        $this->logger = $logger;
        return $this;
    }

    public function mailboxes(ServerRequestInterface $request, ResponseInterface $response, Service $service): ResponseInterface
    {
        $mailboxes = array_map(function(MailboxInterface $mailbox) {
            return ['name' => $mailbox->getName(), 'message_count' => $mailbox->count()];
        }, array_values($service->getMailboxes()->getAll()));
        return $this->withJson($response, compact('mailboxes'));
    }
    public function messages(ServerRequestInterface $request, ResponseInterface $response, Service $service, Mailbox $repository): ResponseInterface
    {
        $body = $request->getBody()->getContents();
        $json = \Safe\json_decode($body);
        $mailbox = $repository->fetchById($json->mailbox);
        $remote_mailbox = $service->getMailboxes()->get($mailbox->getName());
        $messages = $service->getMessages($remote_mailbox, $json->start ?? 0, $json->amount ?? null);
        $mails = [];
        foreach ($messages as $message) {
            $mails []= [
                'position' => $message->getPosition(),
                'uid' => $message->getUID(),
                'subject' => $message->getSubject(),
                'date' => $message->getDateTime()->format('Y-m-d H:i:s'),
                'from' => $message->getFrom(),
                'has_attachments' => $message->hasAttachments(),
                'valid_attachments' => $message->hasValidAttachments(),
                'downloaded_attachments' => $message->hasDownloadedAttachments()
            ];
        }
        return $this->withJson($response, [
            'input' => $json,
            'total' => $mailbox->count(),
            'messages' => $mails
        ]);
    }
    public function withAttachments(ServerRequestInterface $request, ResponseInterface $response, Service $service): ResponseInterface
    {
        $body = $request->getBody()->getContents();
        $json = \Safe\json_decode($body);
        $mailbox = $service->getMailboxes()->get($json->mailbox);
        $messages = $service->getValidMessages($mailbox, $json->start ?? 0, $json->amount ?? null);
        $mails = [];
        foreach ($messages as $message) {
            $mails []= [
                'position' => $message->getPosition(),
                'uid' => $message->getUID(),
                'subject' => $message->getSubject(),
                'date' => $message->getDateTime()->format('Y-m-d H:i:s'),
                'from' => $message->getFrom(),
                'has_attachments' => $message->hasAttachments(),
                'valid_attachments' => $message->hasValidAttachments(),
                'downloaded_attachments' => $message->hasDownloadedAttachments()
            ];
        }
        return $this->withJson($response, [
            'input' => $json,
            'total' => $service->getMailboxes()->countValid($mailbox),
            'messages' => $mails
        ]);
    }
    public function attachments(ServerRequestInterface $request, ResponseInterface $response, Service $service): ResponseInterface
    {
        $body = $request->getBody()->getContents();
        $json = \Safe\json_decode($body);
        $mailbox = $service->getMailboxes()->get($json->mailbox);
        $messages = $service->getMessages($mailbox, $json->start ?? 0, $json->amount ?? null);
        $cnt = 0;
        $attachments = [];
        foreach ($messages as $message) {
            $attachments = array_merge($attachments, $service->saveAttachments($message, $json->extension ?? null));
            $cnt ++;
        }
        return $this->withJson($response, [
            'input' => $json,
            'messages_count' => $cnt,
            'attachments_count' => count($attachments),
            'attachments' => $attachments
        ]);
    }
    public function attachment(ServerRequestInterface $request, ResponseInterface $response, Service $service): ResponseInterface
    {
        $body = $request->getBody()->getContents();
        $json = \Safe\json_decode($body);
        $mailbox = $service->getMailbox($json->mailbox);
        $cnt = 0;
        $attachments = [];
        $errors = [];
        foreach ($json->messages as $uid) {
            $message = $service->getMessage($mailbox, $uid);
            try {
                $attachments = array_merge($attachments, $service->saveAttachments($message, $json->extension ?? null));
            } catch (FilesystemException $e) {
                $errors []= [
                    'message' => $uid,
                    'error' => $e->getMessage()
                ];
            }
            $cnt ++;
        }
        $output = [
            'input' => $json,
            'messages_count' => $cnt,
            'attachments_count' => count($attachments),
            'attachments' => $attachments
        ];
        if (count($errors) > 0) {
            $output['errors'] = $errors;
        }
        return $this->withJson($response, $output);
    }
}