<?php

declare (strict_types=1);
/*
 * This file is part of the Monolog package.
 *
 * (c) Jordi Boggiano <j.boggiano@seld.be>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */
namespace ForminatorGoogleAddon\Monolog\Handler;

use ForminatorGoogleAddon\Monolog\Formatter\FormatterInterface;
use ForminatorGoogleAddon\Monolog\Logger;
use ForminatorGoogleAddon\Monolog\Utils;
use ForminatorGoogleAddon\Monolog\Handler\Slack\SlackRecord;
/**
 * Sends notifications through Slack API
 *
 * @author Greg Kedzierski <greg@gregkedzierski.com>
 * @see    https://api.slack.com/
 *
 * @phpstan-import-type FormattedRecord from AbstractProcessingHandler
 */
class SlackHandler extends SocketHandler
{
    /**
     * Slack API token
     * @var string
     */
    private $token;
    /**
     * Instance of the SlackRecord util class preparing data for Slack API.
     * @var SlackRecord
     */
    private $slackRecord;
    /**
     * @param  string                    $token                  Slack API token
     * @param  string                    $channel                Slack channel (encoded ID or name)
     * @param  string|null               $username               Name of a bot
     * @param  bool                      $useAttachment          Whether the message should be added to Slack as attachment (plain text otherwise)
     * @param  string|null               $iconEmoji              The emoji name to use (or null)
     * @param  bool                      $useShortAttachment     Whether the context/extra messages added to Slack as attachments are in a short style
     * @param  bool                      $includeContextAndExtra Whether the attachment should include context and extra data
     * @param  string[]                  $excludeFields          Dot separated list of fields to exclude from slack message. E.g. ['context.field1', 'extra.field2']
     * @throws MissingExtensionException If no OpenSSL PHP extension configured
     */
    public function __construct(string $token, string $channel, ?string $username = null, bool $useAttachment = \true, ?string $iconEmoji = null, $level = Logger::CRITICAL, bool $bubble = \true, bool $useShortAttachment = \false, bool $includeContextAndExtra = \false, array $excludeFields = array(), bool $persistent = \false, float $timeout = 0.0, float $writingTimeout = 10.0, ?float $connectionTimeout = null, ?int $chunkSize = null)
    {
        if (!\extension_loaded('openssl')) {
            throw new MissingExtensionException('The OpenSSL PHP extension is required to use the SlackHandler');
        }
        parent::__construct('ssl://slack.com:443', $level, $bubble, $persistent, $timeout, $writingTimeout, $connectionTimeout, $chunkSize);
        $this->slackRecord = new SlackRecord($channel, $username, $useAttachment, $iconEmoji, $useShortAttachment, $includeContextAndExtra, $excludeFields);
        $this->token = $token;
    }
    public function getSlackRecord() : SlackRecord
    {
        return $this->slackRecord;
    }
    public function getToken() : string
    {
        return $this->token;
    }
    /**
     * {@inheritDoc}
     */
    protected function generateDataStream(array $record) : string
    {
        $content = $this->buildContent($record);
        return $this->buildHeader($content) . $content;
    }
    /**
     * Builds the body of API call
     *
     * @phpstan-param FormattedRecord $record
     */
    private function buildContent(array $record) : string
    {
        $dataArray = $this->prepareContentData($record);
        return \http_build_query($dataArray);
    }
    /**
     * @phpstan-param FormattedRecord $record
     * @return string[]
     */
    protected function prepareContentData(array $record) : array
    {
        $dataArray = $this->slackRecord->getSlackData($record);
        $dataArray['token'] = $this->token;
        if (!empty($dataArray['attachments'])) {
            $dataArray['attachments'] = Utils::jsonEncode($dataArray['attachments']);
        }
        return $dataArray;
    }
    /**
     * Builds the header of the API Call
     */
    private function buildHeader(string $content) : string
    {
        $header = "POST /api/chat.postMessage HTTP/1.1\r\n";
        $header .= "Host: slack.com\r\n";
        $header .= "Content-Type: application/x-www-form-urlencoded\r\n";
        $header .= "Content-Length: " . \strlen($content) . "\r\n";
        $header .= "\r\n";
        return $header;
    }
    /**
     * {@inheritDoc}
     */
    protected function write(array $record) : void
    {
        parent::write($record);
        $this->finalizeWrite();
    }
    /**
     * Finalizes the request by reading some bytes and then closing the socket
     *
     * If we do not read some but close the socket too early, slack sometimes
     * drops the request entirely.
     */
    protected function finalizeWrite() : void
    {
        $res = $this->getResource();
        if (\is_resource($res)) {
            @\fread($res, 2048);
        }
        $this->closeSocket();
    }
    public function setFormatter(FormatterInterface $formatter) : HandlerInterface
    {
        parent::setFormatter($formatter);
        $this->slackRecord->setFormatter($formatter);
        return $this;
    }
    public function getFormatter() : FormatterInterface
    {
        $formatter = parent::getFormatter();
        $this->slackRecord->setFormatter($formatter);
        return $formatter;
    }
    /**
     * Channel used by the bot when posting
     */
    public function setChannel(string $channel) : self
    {
        $this->slackRecord->setChannel($channel);
        return $this;
    }
    /**
     * Username used by the bot when posting
     */
    public function setUsername(string $username) : self
    {
        $this->slackRecord->setUsername($username);
        return $this;
    }
    public function useAttachment(bool $useAttachment) : self
    {
        $this->slackRecord->useAttachment($useAttachment);
        return $this;
    }
    public function setIconEmoji(string $iconEmoji) : self
    {
        $this->slackRecord->setUserIcon($iconEmoji);
        return $this;
    }
    public function useShortAttachment(bool $useShortAttachment) : self
    {
        $this->slackRecord->useShortAttachment($useShortAttachment);
        return $this;
    }
    public function includeContextAndExtra(bool $includeContextAndExtra) : self
    {
        $this->slackRecord->includeContextAndExtra($includeContextAndExtra);
        return $this;
    }
    /**
     * @param string[] $excludeFields
     */
    public function excludeFields(array $excludeFields) : self
    {
        $this->slackRecord->excludeFields($excludeFields);
        return $this;
    }
}
