<?php
/*+***********************************************************************************
 * The contents of this file are subject to the vtiger CRM Public License Version 1.0
 * ("License"); You may not use this file except in compliance with the License
 * The Original Code is:  vtiger CRM Open Source
 * The Initial Developer of the Original Code is vtiger.
 * Portions created by vtiger are Copyright (C) vtiger.
 * All Rights Reserved.
 *************************************************************************************/
header("Content-Type:application/json");
include_once 'include/Webservices/Relation.php';
include_once 'vtlib/Vtiger/Module.php';
include_once 'includes/main/WebUI.php';
require_once('include/utils/utils.php');

global $adb, $list_max_entries_per_page, $current_user, $site_URL;

$jsonStr = file_get_contents("php://input");
$jsonDecodeOutlookData = json_decode($jsonStr, true);
file_put_contents('outlook65.txt', print_r($jsonDecodeOutlookData, true));
$client_id = "35c8fb89-8324-4be3-acd5-3ad00fd2375f";
$client_secret = "Tjz8Q~RtuArbDPXQvbeRzFH1v9KH7E6_hGZU-bbV";
$redirect_uri= $site_URL."getOutlookToken.php";

$loginDetails = json_decode($jsonDecodeOutlookData['token'], true);
$currentUserId = $jsonDecodeOutlookData['userId'];
$expiresIn = $loginDetails['expires_in'];
$currentTime = date('Y-m-d H:i:s');
$scope = $loginDetails['scope'];
$refreshToken = $loginDetails['refresh_token'];
$accessToken = $loginDetails['access_token'];

if(isset($accessToken)){

    $tokenurl = "https://login.microsoftonline.com/common/oauth2/v2.0/token";

    $data = http_build_query([
        'client_id' => $client_id,
        'client_secret' => $client_secret,
        'grant_type' => 'refresh_token',
        'refresh_token' => $refreshToken,
        'scope' => 'https://graph.microsoft.com/.default'
    ]);

    $ch = curl_init($tokenurl);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_POST, true);
    curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
    curl_setopt($ch, CURLOPT_HTTPHEADER, [
        'Content-Type: application/x-www-form-urlencoded',
    ]);

    $tokenResponse = curl_exec($ch);
    curl_close($ch);

    $tokenResponseData = json_decode($tokenResponse, true);

    $curl = curl_init();
    curl_setopt_array($curl, array(
      CURLOPT_URL => "https://graph.microsoft.com/v1.0/me",
      CURLOPT_RETURNTRANSFER => true,
      CURLOPT_ENCODING => "",
      CURLOPT_MAXREDIRS => 10,
      CURLOPT_TIMEOUT => 30,
      CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
      CURLOPT_CUSTOMREQUEST => "GET",
      CURLOPT_POSTFIELDS => "",
      CURLOPT_HTTPHEADER => array(
        "Authorization: Bearer ".$accessToken
      ),
    ));

    $loginUserInfo = curl_exec($curl);
    $jsonDecodeData = json_decode($loginUserInfo, true);
    $emailId = $jsonDecodeData['userPrincipalName'];
    $displayName = $jsonDecodeData['displayName'];
    if (isset($tokenResponseData['access_token'])) {

        $accessToken = $tokenResponseData['access_token'];
        $expiresIn = $tokenResponseData['expires_in'];
        
        $accessTokenInsertQuery = $adb->pquery("INSERT INTO vtiger_ctoutlook_mailmanager_accesstoken(user_id,email_id,access_token,expires_in,refresh_token,token_generated_time) VALUES (?, ?, ?, ?, ?, ?)",array($currentUserId, $emailId, $accessToken, $expiresIn, $refreshToken, $currentTime));

        $account_id = 1;
        $maxresult = $adb->pquery("SELECT MAX(account_id) AS max_account_id FROM vtiger_mail_accounts", array());
        if ($adb->num_rows($maxresult)) {
            $account_id += (int) $adb->query_result($maxresult, 0, 'max_account_id');
        }

        $query2 = $adb->pquery("INSERT INTO vtiger_mail_accounts(account_id, user_id, display_name, account_name, mail_protocol, mail_username, mail_servername, mails_per_page, ssltype, sslmeth, status, set_default, sent_folder) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)",array($account_id, $currentUserId, $displayName, $emailId, 'IMAP4', $emailId, 'outlook.office365.com', $list_max_entries_per_page, 'ssl', 'novalidate-cert', 1, '0', 'Sent Items'));
        if (!$query2) {
            throw new Exception("Insert failed: " . $adb->database->ErrorMsg());
        }
    }
    
    $headers = [
        "Authorization: Bearer $accessToken",
        "Accept: application/json"
    ];
    $folderCh = curl_init("https://graph.microsoft.com/v1.0/me/mailFolders?\$top=20");
    curl_setopt_array($folderCh, [
        CURLOPT_RETURNTRANSFER => true,
        CURLOPT_HTTPHEADER => $headers
    ]);
    $folderResponse = curl_exec($folderCh);
    curl_close($folderCh);
    $folders = json_decode($folderResponse, true);

    if (!empty($folders['value'])) {
        foreach ($folders['value'] as $folder) {
            $folderId = $folder['id'];
            $folderName = $folder['displayName'];

            $fetchUrl = "https://graph.microsoft.com/v1.0/me/mailFolders/{$folderId}/messages?\$top={$list_max_entries_per_page}";
            $ch = curl_init($fetchUrl);
            curl_setopt_array($ch, [
                CURLOPT_RETURNTRANSFER => true,
                CURLOPT_HTTPHEADER => $headers
            ]);
            $mailResponse = curl_exec($ch);
            curl_close($ch);

            //$mailData = json_decode($mailResponse, true);
            //$folderNextLink = $mailData['@odata.nextLink'] ?? null;
            //$folderDeltaLink = $mailData['@odata.deltaLink'] ?? null;

            $checkFolder = $adb->pquery("SELECT 1 FROM vtiger_ctoutlook_mailmanager_folder_sync WHERE user_id=? AND folder_id=?", array($currentUserId, $folderId));

            if ($adb->num_rows($checkFolder) > 0) {
                //$adb->pquery("UPDATE vtiger_ctoutlook_mailmanager_folder_sync SET next_link=?, delta_link=?, folder_name=? WHERE user_id=? AND folder_id=?", array($folderNextLink, $folderDeltaLink, $folderName, $currentUserId, $folderId));
            } else {
                //$adb->pquery("INSERT INTO vtiger_ctoutlook_mailmanager_folder_sync (user_id, folder_id, folder_name, next_link, delta_link) VALUES (?, ?, ?, ?, ?)", array($currentUserId, $folderId, $folderName, $folderNextLink, $folderDeltaLink));
            }
        }//end of foreach
    }//end of if
}//end of if
echo json_encode(array('status' => 'success'));
?>