<?php
if (!class_exists('Student')) require_once("../common_cadline_libraries/crm_hardlock.class.php");

if ($_SERVER['HTTP_HOST'] == 'www.archline.hu')
    require_once('language/hu-HU.lang.php');
else
    require_once('language/en-GB.lang.php');

$action = isset($_POST['action']) ? $_POST['action'] : '';
if (isset($action) && $action != '') {
    $student = new Student();

    switch ($action) {
        case 'readrecord': { // Get the students
                $course_id = isset($_POST['course_id']) ? $_POST['course_id'] : '';
                if (!isset($course_id) || $course_id == '') {
                    echo json_encode($process['wrong_course']);
                    die();
                }

                $courses = json_decode($_POST['courseArray']);

                $search = isset($_POST['search_name']) ? $_POST['search_name'] : '';
                $student->setCourseID($course_id);
                $studentsArray = $student->getAllStudents($search, $courses);

                echo json_encode($studentsArray);
                break;
            }

        case 'readEmailRecord': {
                $course_id = isset($_POST['course_id']) ? $_POST['course_id'] : '';
                if (!isset($course_id) || $course_id == '') {
                    echo json_encode($process['wrong_course']);
                    die();
                }

                $student->setCourseID($course_id);
                $studentsArray = $student->getAllStudents($search, []);

                echo json_encode($studentsArray);
                break;
            }

        case 'create': { // Insert a new student
                $course_id = isset($_POST['course_id']) ? $_POST['course_id'] : '';
                if (!isset($course_id) || $course_id == '') {
                    echo json_encode($process['wrong_course']);
                    die();
                }

                $name       = $_POST["name"];
                $email      = $_POST["email"];
                $phone      = $_POST["phone"];
                $school_id  = $_POST["schoolid"];

                $student->setCourseID($course_id);
                $course = $student->getCourseByID();

                $sql = "SELECT * FROM `" . CRMADATBAZIS . "`.`students` WHERE email = ?";
                $student->query($sql, array('s', $email));
                $students = $student->fetchNext();

                if (!empty($students)) {
                    if ($student->studentInOtherSchool($school_id, $students['school_id']))
                        echo json_encode($process['other_school']);
                    else
                        echo json_encode($process['user_already']);
                    die();
                }

                $student->setName($name);
                $student->setEmail($email);
                $student->setPhone($phone);
                $student->setSchoolID($school_id);
                $student->setCourseID($course_id);
                $student->setEndDate($course["vegzes_ideje"]);
                $student->setSchool();
                $student->setCourse();
                $student->addStudent();

                if ($student->getnUserID() == null) {
                    echo json_encode($process['user_failed']);
                    die();
                }

                $student->generateStudentPassword();
                break;
            }

        case 'delete': { // Delete the selected student
                if (isset($_POST['deletedid'])) $student->deleteStudent($_POST['deletedid']);
                break;
            }

        case 'details': { // Get the selected student's details
                if (isset($_POST["editid"])) {
                    $userid = $_POST["editid"];
                    $response = array();
                    $student->getStudent($_POST["editid"], $response);

                    echo json_encode($response);
                } else {
                    $response["status"]     = 200;
                    $response["message"]    = "Invalid Request!";
                }
                break;
            }

        case 'update': { // Edit the selected student
                if (isset($_POST["hidden_user_id"])) {
                    $userid     = $_POST["hidden_user_id"];
                    $name       = $_POST["name"];
                    $email      = $_POST["email"];
                    $phone      = $_POST["phone"];
                    $course_id  = $_POST["course_id"];
                    $status     = $_POST["status"];
                    $isDelete   = $_POST["isDelete"] == "Y";

                    $student->setCourseID($course_id);
                    $course = $student->getCourseByID();

                    $student->setSchoolID($course['school_id']);
                    $school = $student->getSchoolByID();

                    $begin        = str_replace('-', '.', $course["begin"]);
                    $end          = str_replace('-', '.', $course["vegzes_ideje"]);
                    $strEducation = $school['username'] . " " . $course['course_code'] . " " . $begin . " - " . $end;

                    $student->setName($name);
                    $student->setEmail($email);
                    $student->setPhone($phone);
                    $student->setSchoolID($course['school_id']);
                    $student->setnSchoolID($school['nSchoolID']);
                    $student->setCourseID($course_id);
                    $student->setEndDate($course["vegzes_ideje"]);
                    $student->setEducation($strEducation);
                    $student->setSchool();
                    $student->setCourse();
                    $student->setStatus($status);
                    $student->updateStudent($userid, $isDelete);
                }
                break;
            }

        case 'sendEmail': { // Send email to the selected students
                if (isset($_POST['selected'])) {
                    $selected   = json_decode(stripslashes($_POST['selected']));
                    $school_id  = $_POST['school_id'];
                    $course_id  = $_POST['course_id'];
                    $isSend     = array();
                    $error      = false;

                    $student->setSchoolID($school_id);
                    $student->setCourseID($course_id);
                    $student->setSchool();
                    $student->setCourse();

                    require_once($_SERVER['DOCUMENT_ROOT'] . '/maintenance/libraries/phpmailer/PHPMailerAutoload.php');
                    require_once($_SERVER['DOCUMENT_ROOT'] . '/maintenance/config.mail.php');

                    $mail = new PHPMailer();

                    $mail->isSMTP();

                    $mail->CharSet  = 'UTF-8';
                    $mail->Host     = $mailconfig['Host'];
                    $mail->Port     = $mailconfig['Port'];
                    $mail->SMTPAuth = true;
                    $mail->SMTPKeepAlive = true;

                    $mail->Username = $mailconfig['Username'];
                    $mail->Password = $mailconfig['Password'];

                    if ($student->schoolEmail != '') {
                        foreach ($selected as $student_id) {
                            $student->sendDistributorEmail($student_id, $error, $isSend, $student->schoolEmail, $mail);
                        }

                        echo json_encode($isSend);
                        die();
                    }

                    foreach ($selected as $student_id) {
                        if ($_SERVER['HTTP_HOST'] == 'www.archline.hu')
                            $student->sendEmail($student_id, $error, $isSend, $mail);
                        else
                            $student->sendEngEmail($student_id, $error, $isSend, $mail);
                    }

                    $msg = "";
                    if ($error) {
                        $to         = "marketing@cadline.hu";
                        $subject    = 'Email küldés hiba';
                        $headers    = 'MIME-Version: 1.0' . "\r\n";
                        $headers   .= 'Content-type: text/html; charset=utf-8' . "\r\n";
                        $headers   .= "From: mate.nagy@cadline.hu" . "\r\n";

                        $counter = 0;
                        $msg .= "A következő email címekre nem ment ki a levél: ";

                        foreach ($isSend as $email) {
                            if ($counter == 0)
                                $msg .= $email;
                            else
                                $msg .= ', ' . $email;

                            $counter++;
                        }
                        mail($to, $subject, $msg, $headers);
                    }
                    echo json_encode($isSend);
                } else {
                    echo json_encode($process['email_failed']);
                }
                break;
            }

        case 'excel_export': {
                require_once 'library/SimpleXLSXGen.php';

                $courses    = array();
                $course_id  = $_POST['excel_c_id'];
                $search     = '';

                $student->setCourseID($course_id);

                $studentsArray  = $student->getAllStudents($search, $courses);
                $school         = $student->getSchoolByCourse();

                $header = array();

                if ($_SERVER['HTTP_HOST'] == 'www.archline.hu')
                    $header = array('<b>Név</b>', '<b>Email</b>', '<b>Telefonszám</b>', '<b>Státusz</b>', '<b>ARCHLine.XP Sorozatszám</b>', '<b>Program indítások</b>');
                else
                    $header = array('<b>Name</b>', '<b>Email</b>', '<b>Telephone Number</b>', '<b>Status</b>', '<b>ARCHLine.XP Serial Number</b>', '<b>Program Starts</b>');

                $students = array($header);
                $pwd = '';

                foreach ($studentsArray as $stud) {
                    if (preg_match('/>(.*?)</', $stud['prPass'], $pwd) == 1)
                        $pwd = $pwd[1];

                    $starts = $student->getProgramStarts($pwd);
                    $status = $student->getStudentStatus($stud['status']);
                    $studentDatas = array($stud['name'], $stud['email'], $stud['phone'], $status, $pwd, $starts);
                    array_push($students, $studentDatas);
                }

                $xlsx = Shuchkin\SimpleXLSXGen::fromArray($students);
                $xlsx->setDefaultFontSize(14);
                $xlsx->downloadAs($school['school_name'] . '_' . $school['course_name'] . '.xlsx');
                break;
            }

        case 'excel_import': { // Import students from XLSX file
                if (isset($_POST['schoolid'])) {
                    require_once 'library/SimpleXLSX.php';

                    $school_id  = $_POST["schoolid"];
                    $course_id  = $_POST["course_id"];
                    $values     = array();
                    $error      = array();
                    $xlsx       = SimpleXLSX::parse($_FILES['file']['tmp_name']);

                    foreach ($xlsx->rows() as $k => $v) {
                        if ($k == 0) continue;

                        $values[] = array(
                            'name'  => $v[0],
                            'email' => $v[1],
                            'phone' => $v[2]
                        );
                    }

                    $student->setSchoolID($school_id);
                    $student->setCourseID($course_id);
                    $student->setSchool();
                    $student->setCourse();
                    $course = $student->getCourseByID();

                    foreach ($values as $stud) {
                        $name   = $stud['name'];
                        $email = str_replace(' ', '', $stud["email"]);
                        $phone  = $stud["phone"];

                        if ($name == '') continue;

                        if (is_numeric($name)) {
                            array_push($error, $process['number_name'] . ": " . $name);
                            continue;
                        }

                        if ($email == '') {
                            array_push($error, $process['missing_email'] . ": " . $name);
                            continue;
                        }

                        if (!filter_var($email, FILTER_VALIDATE_EMAIL)) {
                            array_push($error, $process['invalid_email'] . ": " . $email);
                            continue;
                        }

                        $sql = "SELECT * FROM `" . CRMADATBAZIS . "`.`students` WHERE email = ?";
                        $student->query($sql, array('s', $email));
                        $students = $student->fetchNext();

                        if (!empty($students)) {
                            if ($student->studentInOtherSchool($school_id, $students['school_id']))
                                array_push($error, $process['other_school'] . ": " . $email);
                            else
                                array_push($error, $process['email_already'] . ": " . $email);
                            continue;
                        }

                        $student->setName($name);
                        $student->setEmail($email);
                        $student->setPhone($phone);
                        $student->setEndDate($course["vegzes_ideje"]);
                        $student->addStudent();

                        if ($student->getnUserID() == null) {
                            array_push($error, $process['user_failed'] . ": " . $email);
                            continue;
                        }
                        $student->generateStudentPassword();
                    }

                    echo json_encode($error);
                }
                break;
            }
    }
}