<?php
include "zefixAPI.php";
include "read_write_xlsx.php";

include "emailSender.php";

$maxExecutionTime = 120;
$taskDir = 'tasks';
$downloadDir = 'download';
$minTaskOldness = 10;
$latesEndTime = time() + $maxExecutionTime;
$smtppassword = getenv("smtppassword");

if(!is_dir($downloadDir)){
    mkdir($downloadDir, 0755, true);
}

function doRequest($data, $filename, $username, $password)
{
    $response = sendAPICompanySearchRequest($username, $password, $data);
    $responseObject = json_decode($response, true);
    if(array_key_exists("error", $responseObject)) {
        return false;
    }
    $companyArray = $responseObject['list'];
    $companyData = array();
    foreach ($companyArray as $company) {
        $companyFullData = json_decode(sendAPICompanyInfoRequest($username, $password, $company['uid']), true)[0];
        $companyData[] = [$companyFullData['name'],$companyFullData['address']['street'], $companyFullData['address']['houseNumber'], $companyFullData['address']['swissZipCode'], $companyFullData['address']['city'],$companyFullData['uid'],$companyFullData['legalSeat'],$companyFullData['legalForm']['name']['de'],$companyFullData['status'],$companyFullData['sogcDate'],$companyFullData['deletionDate']];
    }
    if (! file_exists($filename)) {
        // If File doesn't exist yet
        $file = fopen($filename, 'w');
        if($file) {
            fputcsv($file, ['name', 'street', 'houseNumber', 'swissZipCode', 'city', 'uid', 'legalSeat', 'legalForm', 'status', 'sogcDate', 'deletionDate']);
        }
    } else {
        // If file already exists
        $file = fopen($filename, 'a');
    }
    if ($file) {
        foreach ($companyData as $row){
            fputcsv($file, $row);
        }
        fclose($file);
    }
    if($responseObject['hasMoreResults']) {
        return $responseObject['maxOffset'] + 50;
    } else {
        return false;
    }
}


// Stop executing bevore reaching PHP Max Execution Time
function convertcsvToXlsx(string $csvFile, string $xlsxFile)
{
    $csvData = [];

    if (($handle = fopen($csvFile, "r")) !== false) {
        while (($data = fgetcsv($handle, 1000, ",")) !== false) {
            $csvData[] = $data;
        }
        fclose($handle);
    } else {
        echo "Failed to open $csvFile for reading.";
    }

    write_xlsxFile($xlsxFile, $csvData);
}

while($latesEndTime - time() > 30){
    // If the directory for Tasks is already created
    if(is_dir($taskDir)) {
        $taskfiles = scandir($taskDir);
        $taskfiles = array_diff($taskfiles, array('.', '..'));
        sort($taskfiles);
        // if there are any taks which are older then min oldness. To be sure the file writing process is finished.
        if(count($taskfiles) > 0 && intval(explode("-", $taskfiles[0])[0]) + $minTaskOldness < time()) {
            $taskString = file_get_contents($taskDir.'/'.$taskfiles[0]);
            $task = json_decode($taskString, true);

            // if there are any requests to do, do the first
            if(count($task['requests']) > 0) {
                $nextOffset = doRequest($task['requests'][0], str_replace(".json", ".csv", $downloadDir.'/'.$taskfiles[0]), $username , $password);
                if($nextOffset){
                    $task['requests'][0]['offset'] = $nextOffset;
                } else {
                    array_shift($task['requests']);
                }
                $taskString = json_encode($task);
                $taskfile = fopen($taskDir.'/'.$taskfiles[0], 'w');
                if($taskfile){
                    fwrite($taskfile, $taskString);
                    fclose($taskfile);
                }
            }
            // if there are no Requests left, send the E-Mail
        else {
                convertcsvToXlsx(str_replace(".json", ".csv", $downloadDir.'/'.$taskfiles[0]), str_replace(".json", ".xlsx", $downloadDir.'/'.$taskfiles[0]));
                unlink(str_replace(".json", ".csv", $downloadDir.'/'.$taskfiles[0]));
                unlink($taskDir.'/'.$taskfiles[0]);
                echo "Task File deleted";
                echo "<br>";
                sendEmail($task['email'], str_replace(".json", ".xlsx", $downloadDir.'/'.$taskfiles[0]), $smtppassword);
            }
        } else {
            // acutal Time - start time
            echo "nothing to do after: ".strval(time() - ($latesEndTime - $maxExecutionTime));
            echo "sleeping 10 seconds";
            echo "<br>";
            sleep(10);
        }
    }
}

?>