<?php
namespace MailChannels;

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

require_once("/usr/local/mailchannels/boot.php");

App::setLogger(new \Katzgrau\KLogger\Logger("/var/log/mailchannels/"));
$logger = App::getLogger();

$accessHashLocation = "/etc/mailchannels/access_hash";

const CHECKING_WHM_HASH_EXISTS_MESSAGE = "Checking for WHM access hash existence...";
const CREATING_WHM_HASH_MESSAGE = "Creating access hash...";
const WHM_HASH_CREATE_SUCCESS = "Access hash successfully created";
const CREATING_WHM_HASH_ERROR_MESSAGE = "An error occurred while creating the access hash, please check the logs";
const WHM_HASH_EXISTS_MESSAGE = "Access hash exists";
const REGISTERING_HOOKS_MESSAGE = "Registering hooks...";
const COULD_NOT_WRITE_TO_WHM_HAS_FILE_MESSAGE = "Couldn't write access hash to file.";
const EXIM_LOCAL_NOT_EDITABLE_MESSAGE = "Current local exim config file may cause updating MailChannels outbound settings to fail, please see https://mailchannels.zendesk.com/hc/en-us/categories/200009810-Outbound-Filtering for more information";

echo CHECKING_WHM_HASH_EXISTS_MESSAGE . "\n";

echo CREATING_WHM_HASH_MESSAGE . "\n";

try {
    createAccessHash($accessHashLocation);

    echo WHM_HASH_CREATE_SUCCESS . "\n";
} catch(\Exception $e) {
    echo CREATING_WHM_HASH_ERROR_MESSAGE . "\n";

    $logger->error($e->getMessage());

    exit(1);
}

function createAccessHash($accessHashLocation) {
    $tokenName = "mailchannels";
    $tokenACLs = ["all"];
    $token = null;

    try {
        $whmapi1 = new WHMAPI1CMDImpl();
        $token = $whmapi1->apiTokenCreate($tokenName, $tokenACLs);
    } catch (WHMApiBadStatusException $e)  {
        if (preg_match("/API token with the name .* already exists/", $e->getMessage())) {
            $whmapi1->apiTokenRevoke($tokenName);
            $token = $whmapi1->apiTokenCreate($tokenName, $tokenACLs);
        } else {
            throw $e;
        }
    }

    $b64Token = base64_encode($token->getToken());
    if (!file_put_contents($accessHashLocation, $b64Token)) {
        throw new \Exception(COULD_NOT_WRITE_TO_WHM_HAS_FILE_MESSAGE);
    }
    chmod($accessHashLocation, 0640);
}

$config = App::getConfig();

// check local exim config file to see if MailChannels outbound settings could be updated
if (file_exists($config::EXIM_CONF_LOCAL) && !$config->isEditableForMCConfig($config::EXIM_CONF_LOCAL) ) {
    echo EXIM_LOCAL_NOT_EDITABLE_MESSAGE . "\n";
}

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

echo REGISTERING_HOOKS_MESSAGE . "\n";
$out = $hookRegister->registerHooks();

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

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