<?php
namespace MailChannels;

$bootFile = "/usr/local/mailchannels/boot.php";
if (!file_exists($bootFile)) {
    return;
}

$loadFile = "/usr/local/mailchannels/load.php";
if (!file_exists($loadFile)) {
    return;
}

const OUTBOUND_CONFIG_DETECTED_MESSAGE = "We've detected that you have MailChannels Outbound filtering configured. Would" .
    " you like to restore your outbound email configuration to what it was before the plugin was installed (you will no" .
    " longer filter outbound email through MailChannels)?";
const REMOVING_HOOKS_START_MESSAGE = "Removing hooks...";
const REMOVING_OUTBOUND_START_MESSAGE = "Removing MailChannels outbound email filtering...";
const USER_INPUT_YES_NO_MESSAGE = "(yes / no ): ";
const FAILED_OUTBOUND_ROUTER_REMOVE_MESSAGE = "Failed to remove the MailChannels Router section from the exim configuration";
const FAILED_OUTBOUND_TRANSPORT_REMOVE_MESSAGE = "Failed to remove the MailChannels Transport section from the exim configuration";
const FAILED_OUTBOUND_AUTH_REMOVE_MESSAGE = "Failed to remove the MailChannels Auth section from the exim configuration";
const REMOVED_OUTBOUND_SUCCESS = "MailChannels outbound email filtering removed";

ini_set("error_log", "/var/log/mailchannels/php-error.log");

require_once($bootFile);

Config::$CONFIG_CLASS = 'MailChannels\UninstallConfig';

require_once($loadFile);

$config = App::getConfig();

$purge = false;
foreach ($argv as $arg) {
    if ($arg === '--purge') {
        $purge = true;
    }
}

//Register hooks
$hookRegister = new HookRegister($config::HOOKS);

echo REMOVING_HOOKS_START_MESSAGE . "\n";
$out = $hookRegister->deleteHooks();

$outboundSMTPService = ServiceSelector::getService(OutboundSMTPService::class);

if (! $outboundSMTPService instanceof OutboundSMTPService) {
    App::getLogger()->error("No OutboundSMTPService set in the ServiceSelector");
    echo "An error occurred while trying to detect the state of the outbound email configuration, please check the logs";
    exit(1);
}

if ($outboundSMTPService->isMailServerConfigured()) {
    if (!$purge) {
        echo OUTBOUND_CONFIG_DETECTED_MESSAGE . "\n";
        $input = readline(USER_INPUT_YES_NO_MESSAGE);
    }

    if ($purge || strtolower($input) === 'yes') {
        echo REMOVING_OUTBOUND_START_MESSAGE . "\n";

        $outboundSMTPService->unConfigureMailServer();

        echo REMOVED_OUTBOUND_SUCCESS . "\n";
    }
}

if (!empty($out)) {
    echo "\n";

    foreach ($out as $o) {
        echo "$o\n";
    }
}