<?php

// require_once( '/Users/osx/Sites/Float/adminsavvy/backend.php' );
include '../backend.php';
require_once('../vendor/autoload.php');
require_once('common/Logger.php');

use \SendGrid\Mail\Mail;

/**
 * Send email Float App sign up emails last 24 hours daily report
 */
class EmailLast24hrsReport
{

    public $conn;
    public $repConn;

    public $sendgrid_api;
    public $sender;
    public $sender_name;
    public $receivers;

    protected $hard_limit = 550;

    function __construct()
    {
        global $savvyext;
        $this->conn = self::__cnn($savvyext);
        $this->repConn = self::__repCnn($savvyext);

        $this->sendgrid_api = $savvyext->cfgReadChar('mailsend.api_key');
        $this->sender = $savvyext->cfgReadChar('mailsend.from');
        $this->sender_name = $savvyext->cfgReadChar('mailsend.name');
        $this->receivers = array(
           'jervis@float.sg' => 'Jervis',
           'tnguyen@float.sg' => 'Tri Nguyen',
            //'charlie.nguyen.goldenowl@gmail.com' => 'Charlie Nguyen',
        );
    }

    private static function __cnn($savvyext)
    {
        $db_host = $savvyext->cfgReadChar('database.host');
        $db_name = $savvyext->cfgReadChar('database.name');
        $db_user = $savvyext->cfgReadChar('database.user');
        $db_pass = $savvyext->cfgReadChar('database.pass');
        $db_port = $savvyext->cfgReadLong('database.port');
        $connstr = sprintf('host=%s port=%s dbname=%s user=%s password=%s', $db_host, $db_port, $db_name, $db_user, $db_pass);
        $conn = pg_connect($connstr);

        return $conn;
    }

    private static function __repCnn($savvyext)
    {
        $db_host = $savvyext->cfgReadChar('database_replica.host');
        $db_name = $savvyext->cfgReadChar('database_replica.name');
        $db_user = $savvyext->cfgReadChar('database_replica.user');
        $db_pass = $savvyext->cfgReadChar('database_replica.pass');
        $db_port = $savvyext->cfgReadLong('database_replica.port');
        $connstr = sprintf('host=%s port=%s dbname=%s user=%s password=%s', $db_host, $db_port, $db_name, $db_user, $db_pass);
        $conn = pg_connect($connstr);

        return $conn;
    }

    private function array2csv($data, $delimiter = ',', $enclosure = '"', $escape_char = "\\")
    {
        $f = fopen('php://memory', 'r+');
        foreach ($data as $item) {
            fputcsv($f, $item, $delimiter, $enclosure, $escape_char);
        }
        rewind($f);
        return stream_get_contents($f);
    }
    /**
     * Send email report via SendGrid
     * @param array $data list email fail
     * @return mixed
     */
    protected function send($data)
    {
        $short_date = (new \DateTime())->format('Y-M-d');
        // create email layout
        ob_start();
        require_once(__DIR__ . '/email/sign_up_email_last_24hrs.php');
        $layout = ob_get_clean();
        // create sendgrid instance
        $sendgrid = new \SendGrid\Mail\Mail;
        $sendgrid->setFrom($this->sender, $this->sender_name);
        $sendgrid->setSubject('Float App sign up emails last 24 hours daily report');
        $sendgrid->addTos($this->receivers);
        $sendgrid->addContent('text/html', $layout);


        //HEADER of csv files
        array_unshift($data,[
            'Date','Email name', 'Total emails'
        ]);
        $att1 = new \SendGrid\Mail\Attachment();
        //$att1->setContent( file_get_contents("test_files/1/1.txt") );
        $att1->setContent( $this->array2csv($data) );
        $att1->setType("text/csv");

        $att1->setFilename("sign-up-emails-last-24-hrs-report-".$short_date.".csv");
        $att1->setDisposition("attachment");
        $sendgrid->addAttachment( $att1 );

        // send
        $send = new \SendGrid($this->sendgrid_api);
        $response = $send->send($sendgrid);
        if ($response->statusCode() !== 202) {
            throw new Exception('Send email via Sendgrid get errors!');
        }
    }
    public function getemails()
    {
        try {
            // HH24:MI
            $sql = sprintf("
                SELECT to_char(added::DATE,'YYYY-Mon-DD') as date,'Welcome to Float' as email_name, count(id) as total FROM members
                WHERE added >= NOW() - INTERVAL '24 HOURS' 
                GROUP BY added::DATE
                ORDER BY added::DATE ASC;
			");

            $results = pg_query($this->repConn, $sql);

            if ($error = pg_last_error($this->repConn)) {
                throw new Exception($error);
            }

            return pg_fetch_all($results);

        } catch (Exception $e) {
            Logger::debug($e->getMessage());
        }
    }
    private function getEmptyData(){
        return [
            'date' => (new \DateTime())->modify('-24 hours')->format('Y-M-d'), // H:i
            'email_name' => 'Welcome to Float',
            'total' => '0',
        ];
    }

    /**
     * Excute jobs
     * @return mixed
     */
    public function excute()
    {
        try {
            $data = $this->getemails();
            if (!$data) {
                $data = [$this->getEmptyData()];
                //throw new Exception('No Email Receipt which parsed failed!');
            }


            $send = $this->send($data);
        } catch (Exception $e) {
            Logger::debug($e->getMessage());
        }
    }
}

$instace = new EmailLast24hrsReport;
$instace->excute();