<?php

/*********************
 *********************
 Profile Controller : "Profile.php"
 Profile Template   : "profile.php"
 Aernout Guillaume
 http://Codes.Solutions
 *********************
 *********************/

if (!defined('BASEPATH')) {
    exit('No direct script access allowed');
}

class Profile extends NS_Controller
{
    public function __construct()
    {
        parent::__construct(array('no_cache' => 1));

        $this->load->helper('generator');
        $this->load->model('users_model');
        $this->load->model('student_model');
        $this->load->model('teacher_model');
        $this->load->model('customer_model');
        $this->load->model('address_model');
        $this->load->model('event_model');
        $this->load->model('course_model');
        $this->load->model('profile_model');
        $this->load->model('product_transaction_model');
        $this->load->model('payment_model');
        $this->load->model('setting_model');
        $this->load->database();
    }

    public function index($arg = '')
    {
        $this->load->helper('url');
        $param = $this->uri->segment(3);
        $user_id = (int) $this->session->userdata('userID');
        $user = $this->users_model->get_entry((int) $user_id);

        //if paid and registred
        if ($this->users_model->is_paid($user_id)) {
            $pending = $this->session->userdata('profile_pending');
            if ($pending != null) {
                if ($this->switch_profile($pending)) {
                    if ($this->session->userdata('parent_login') != 1 && $this->session->userdata('student_login') != 1) {
                        header("Refresh:0");
                    }
                }
            }
        }

        if ($_SESSION['parent_login'] == "1" && $_SESSION['login_type'] == "invited") {
            $_SESSION['login_type'] = 'parent';
            header("Refresh:0");
        }

        $data = [
            'page_name' => 'profile',
            'page_title' => get_phrase('Profile'),
            'role' => $this->session->userdata('login_type'),
            'language' => $this->profile_model->language(),
            'profile' => $this->profile_model->data_profile(),
            'products' => $this->customer_model->get_cart(),
            'firstname' => $user->first_name,
            'lastname' => $user->last_name,
            'user' => $user,
            'fullfilled_user' => $this->users_model->fullfilled_user((array) $user),
            'pdf_uniq_name' => $this->users_model->uniq_user_hash((int) $user->user_id),
            'dynamic_assets' => ['intlTelInput']
        ];

        if (isset($param)) {
            $data['reset'] = "true";
        }
        if ($this->session->userdata("login_type") === 'teacher') {
            $data['teacher'] = $this->teacher_model->get_entry($user_id);
            $data['teacher_can_full_edit'] = ((int) $data['teacher']->locked_profile === 0);
            $data['teacher_available_to_generate_contract'] = $this->teacher_model->teacher_available_to_generate_contract($user_id);
            $data['teacher_available_to_sign_contract'] = $this->teacher_model->teacher_available_to_sign_contract($user_id);
            $data['teacher_book_url'] = $this->setting_model->get_value('teacher_book_url');
        } elseif ($this->session->userdata("login_type") === 'parent') {
            $data['childrens'] = $this->student_model->get_from_parent_id((int) $user_id);
            $data['courses_unassigned'] = $this->customer_model->get_paid_unattribued_courses((int) $user_id);
        }

        if ($this->session->userdata('new_purchase') && $this->session->userdata('order_id') && $this->session->userdata('order_amount')) {
            $data['new_purchase'] = (bool) $this->session->userdata('new_purchase');
            $data['order_id']     = (int) $this->session->userdata('order_id');
            $data['order_amount'] = (float) $this->session->userdata('order_amount');
        }

        $this->load->view('backend/index', $data);
    }

    public function reset()
    {
        $pass = $this->input->post("pass");
        if ($this->profile_model->password_reset($pass)) {
            echo "1";
        } else {
            echo "reset failed";
        }
        return true;
    }

    public function edit()
    {
        $this->load->helper('validator');
        $this->continueIfAllowed(['allowed' => ['admin', 'student', 'teacher', 'parent']]);
        $data = $this->input->post([
            'pic','phone','dob','line_1','line_2','country','state',
            'location','postcode','lang','pass','type','firstname','lastname',
            'nationality', 'register_number','school','phone_sos', 'teacher_statut',
        ]);
        $errors = [];
        $role = $this->session->userdata('login_type');

        $userId = (int) $this->session->userdata('userID');
        if (empty($userId)) {
            echo json_encode(['success' => false, 'errors' => ['Not allowed to edit this profile.']]);
        }
        $user = $this->users_model->get_entry((int) $userId);

        $user_address_id = $this->users_model->get_profile_address();
        if ($this->users_model->check_phone($data['phone']) != true || ($data['phone'] == null || $data['phone'] == "")) {
            array_push($errors, "Please enter a correct phone number");
        }

        $update_user_data = [];
        // Firstname and lastname can be changed only if empty
        if (!empty($user->firstname) && !empty($data['firstname'])) {
            $data['firstname'] = '';
        }
        if (!empty($user->lastname) && !empty($data['lastname'])) {
            $data['lastname'] = '';
        }

        if (!empty($data['nationality']) && in_array($data['nationality'], ['be', 'fr', 'nl', 'de', 'lu', '*'])) {
            $update_user_data['nationality'] = $data['nationality'];
        }

        if ($role !== 'admin') {
            //admin dont need those forms
            if ($this->users_model->check_address($data['line_1'], $data['line_2'], $data['country'], $data['state'], $data['postcode']) != true) {
                array_push($errors, "Please enter a correct address");
            }

            $dob = str_replace('/', '-', $data['dob']);
            $dob = date('Y-m-d', strtotime($dob));

            if (empty($data['register_number'])) {
                array_push($errors, "Please enter a valid national register number");
            }
            if ($update_user_data['nationality'] == 'be' && register_number_validity($data['register_number']) === false) {
                array_push($errors, "Invalid register national number. Please enter a valid national register number");
            }

            if ($this->users_model->check_dob($dob) != true || ($data['dob'] == null || $data['dob'] == "") && $role !== 'parent') {
                array_push($errors, "Please enter a correct date of birth");
            }
        }

        if ($data['pass'] != '') {
            if (!$this->users_model->check_pass($data['pass'])) {
                array_push($errors, "Please enter a correct password");
            }
        }

        /* Teacher can change their profile themselves only before contract generation (or sign) */
        if ($role === "teacher") {
            $teacher = $this->teacher_model->get_entry($user->user_id);
            if ($teacher && (int) $teacher->locked_profile === 1) {
                $data = array_diff_key($data, ['firstname' => true, 'lastname' => true, 'phone' => true]);
            }
        }

        if (empty($errors)) {
            //update user + address
            if (!$this->users_model->update_user($user->user_id, $user->email, $data['pass'], $data['firstname'], $data['lastname'], $data['phone'], $data['lang'], '', $dob)) {
                return false;
            }
            if (!empty($update_user_data)) {
                $this->users_model->update_entry((int) $user->user_id, $update_user_data); // TODO: regroup all fields in this update request (instead use update_user function)
            }
            $this->profile_model->set_session_lang(); // set language

            $this->db->set(array("first_connection" => "0"));
            $this->db->where('user_id', $userId);
            $this->db->update('user');

            if ($role == "teacher") {
                if (!empty($teacher) && (int) $teacher->locked_profile === 0) {
                    if (!empty($user_address_id) && !empty($this->address_model->get_entry((int) $user_address_id))) {
                        $this->users_model->update_user_address($user_address_id, $data['line_1'], $data['line_2'], $data['country'], $data['state'], $data['location'], $data['postcode']);
                    } elseif ($role === "teacher") {
                        $address_id = $this->users_model->create_user_address($data['line_1'], $data['line_2'], $data['country'], $data['state'], $data['location'], $data['postcode']);
                        $this->teacher_model->update_entry($user->user_id, ['address_id' => (int) $address_id]);
                    }
                }
                return $this->edit_teacher_profile();
            } elseif ($role == "student") {
                $this->profile_model->update_student_profile($data, $userId);
                if (!empty($user_address_id) && !empty($this->address_model->get_entry((int) $user_address_id))) {
                    $this->users_model->update_user_address($user_address_id, $data['line_1'], $data['line_2'], $data['country'], $data['state'], $data['location'], $data['postcode']);
                }
            } elseif ($role == "parent") {
                $this->profile_model->update_parent_profile($data, $userId);
                if (!empty($user_address_id) && !empty($this->address_model->get_entry((int) $user_address_id))) {
                    $this->users_model->update_user_address($user_address_id, $data['line_1'], $data['line_2'], $data['country'], $data['state'], $data['location'], $data['postcode']);
                }
            }

            echo json_encode(['success' => true]);
        } else {
            echo json_encode(['success' => false, 'errors' => $errors]);
        }
    }

    private function edit_teacher_profile()
    {
        $teacher_id = (int) $this->session->userdata('userID');
        $teacher = $this->teacher_model->get_entry($teacher_id);
        if (empty($teacher)) {
            echo json_encode(['success' => false]);
            return;
        }
        $form_data = $this->input->post([
            'dob', 'register_number', 'teacher_statut', 'teacher_iban'
        ]);
        $errors = [];

        $dob = DateTime::createFromFormat('Y-m-d', str_replace('/', '-', $form_data['dob']));

        if (empty($dob) || $dob > (new DateTime()) || $dob->diff(new DateTime())->y < 16) {
            $errors[] = "Please enter a correct date of birth";
        }

        $update_data = [];
        // Allow edition for somes fields only before final validation
        if ((int) $teacher->locked_profile === 0) {
            if (empty($form_data['teacher_iban']) || strlen($form_data['teacher_iban']) > 34) {
                $errors[] = "IBAN must be between 14 and 34 characters";
            } else {
                $update_data['iban'] = $form_data['teacher_iban'];
            }
            if (in_array((int) $form_data['teacher_statut'], [1, 3]) === false) {
                $errors[] = "Please choose a teacher's contract type";
            } else {
                $update_data['admin_contract'] = (int) $form_data['teacher_statut'];
            }

            $update_data['register_number'] = $form_data['register_number'];
            $update_data['dob'] = $dob->format('Y-m-d');
        }

        if (!empty($errors)) {
            echo json_encode(['success' => false, 'errors' => $errors]);
            return;
        }

        // If teacher is already in status "order", lock profile
        if ((int) $teacher->admin_state === 1) {
            $update_data['locked_profile'] = true;
        }

        $this->teacher_model->update_entry($teacher_id, $update_data);
        echo json_encode(['success' => true]);
    }

    public function edit_student()
    {
        //update from parent profile (fonction added for register number)
        $this->continueIfAllowed(['allowed' => ['admin', 'student', 'parent']]);
        $data = $this->input->post([
            'pic', 'phone', 'dob', 'line_1', 'line_2', 'country',
            'state', 'location', 'postcode', 'lang', 'pass',
            'type', 'name', 'surname', 'register_number', 'school', 'phone_sos', 'student'
        ]);
        $error = array();

        // Admin can edit all students, otherwise, we need to check if the user have the right to change student data
        $userId = (int) $data['student'];
        $actual_userid = (int) $this->session->userdata('userID');
        if ($this->session->userdata('login_type') != 'admin') {
            if ($userId !== $actual_userid && in_array($userId, $this->crud_model->get_parent_child($actual_userid)) === false) {
                echo json_encode(['success' => false, 'errors' => ['Not allowed to edit this student.']]);
                return;
            }
        }

        $userEmail = $this->crud_model->get_user_email($userId);
        $userAddressId = $this->users_model->get_profile_address();
        if ($this->users_model->check_phone($data['phone']) != true || ($data['phone'] == null || $data['phone'] == "")) {
            array_push($error, "Please enter a correct phone number");
        }

        if ($this->session->userdata('login_type') != 'admin') {
            //admin dont need those forms
            if ($this->users_model->check_address($data['line_1'], $data['line_2'], $data['country'], $data['state'], $data['postcode']) != true) {
                array_push($error, "Please enter a correct address");
            }

            $dob = str_replace('/', '-', $data['dob']);
            $dob = date('Y-m-d', strtotime($dob));

            if ($this->users_model->check_dob($dob) != true || ($data['dob'] == null || $data['dob'] == "")) {
                array_push($error, "Please enter a correct date of birth");
            }

            if (empty($data['register_number'])) {
                array_push($error, "Please enter a valid national register number");
            }
        }

        if ($data['pass'] != '') {
            if (!$this->users_model->check_pass($data['pass'])) {
                array_push($error, "Please enter a correct password");
            }
        }

        $error = array_filter($error);

        if (empty($error)) {
            $this->profile_model->update_student_profile($data, $userId); //new procedure
            $this->profile_model->set_session_lang(); // set language

            $this->db->set(array("first_connection" => "0"));
            $this->db->where('user_id', $userId);
            $this->db->update('user');

            echo json_encode(['success' => true]);
        } else {
            echo json_encode(['success' => false, 'errors' => $error]);
        }

    }

    public function check_email()
    {
        $this->continueIfAllowed(array('allowed' => array('invited','student','parent','teacher','admin')));
        $email = $this->input->post('email');

        if ($this->users_model->email_exist($email) == true) {
            echo "true";
        } else {
            echo "false";
        }
    }

    public function edit_invited()
    {
        $this->continueIfAllowed(['allowed' => ['invited','student','parent','teacher','admin']]);
        $data = $this->input->post(array('pic','phone','dob','line_1','line_2','country','state','location','postcode','lang','pass','type','name','surname','email','repartition','courses'));
        $isoLang = $this->profile_model->intToIso($data['lang']);
        if ($isoLang == "") {
            $isoLang = "fr";
        }

        $error = [];
        $userId = $this->session->userdata('userID');
        $userEmail = $this->crud_model->get_user_email($userId);
        $userAddressId = $this->users_model->get_profile_address();
        $is_paid = true;
        $password;
        $this->session->set_userdata(array('login_type' => "invited"));

        if ($this->session->userdata('login_type') === 'invited') {
            if ($data['type'] === "child") {
                //verifications
                $dob = str_replace('/', '-', $data['dob']);
                $dob = date('Y-m-d', strtotime($dob));

                if ($this->users_model->check_dob($dob) != true || ($data['dob'] == null || $data['dob'] == "")) {
                    array_push($error, "Please enter a correct date of birth");
                }

                //check spam click
                $last = $this->crud_model->get_last_user();
                if ($last['first_name'] == $data['name'] && $last['last_name'] == $data['surname']) {
                    array_push($error, "user already created : spam prevent");
                }

                $error = array_filter($error);

                if (empty($error)) {
                    //create user
                    $IDmail = uniqid()."[email protected]";
                    $password = $this->users_model->generate_pass('8');
                    $student_id = $this->users_model->create_user($IDmail, $password, $data['name'], $data['surname'], $data['phone'], '4', $isoLang, '3', '1', $is_paid);
                    $student_address_id = $this->users_model->create_user_address($data['line_1'], $data['line_2'], $data['country'], $data['state'], $data['location'], $data['postcode']);
                    if (!is_numeric($student_address_id) || !is_numeric($student_id)) {
                        return false;
                    };

                    $this->users_model->create_student($student_id, $student_address_id, "shop user :".$this->payment_model->get_payment_user_date($userId), $dob, $userId);

                    //everithing is done : Parent > Child √ -> redirect to parent profile
                    if ($is_paid) {
                        //if paid switch profile
                        if ($this->switch_profile('parent')) {
                            //set balance update;
                            $this->customer_model->update_balance_new($student_id, $data['courses'], $data['repartition']);
                            //assign course
                            $courses = json_decode($data['courses'], true);
                            foreach ($courses as $course_id) {
                                $course = $this->course_model->get_entry((int) $course_id);
                                $this->assignAll($student_id, (int) $course_id, $isoLang);
                                $product_transaction = $this->product_transaction_model->get_entry_unassigned((int) $userId, (int) $course_id);
                                if ($product_transaction) {
                                    $this->product_transaction_model->update_entry($product_transaction->id, [
                                        'state' => Product_transaction_model::STATES['assigned'],
                                        'assigned_to' => $student_id,
                                        'assigned_at' => date('Y-m-d H:i:s')
                                    ]);

                                    if ($course) {
                                        $transaction = $this->wallet_model->get_transaction_by_id((int) $product_transaction->transaction_id);
                                        try {
                                            $this->event_model->notify_admin('new_customer', $isoLang, $userId, [
                                                'student_enrolled' => ucfirst($data['name']) . " " . ucfirst($data['surname']),
                                                'product_buy' => $course->CourseName,
                                                'payment_amount' => $transaction->Payment_Amount,
                                                'payment_date' => date("d/m/Y"),

                                            ]);
                                        } catch (Exception $e) {
                                            echo "mail error :".$e->getMessage();
                                        }
                                    }
                                }
                            }
                        }
                    }
                    echo json_encode(['success' => true]);
                    return;
                }
            } elseif ($data['type'] === "student") {
                //verifications
                $dob = str_replace('/', '-', $data['dob']);
                $dob = date('Y-m-d', strtotime($dob));

                if ($this->users_model->check_dob($dob) != true || ($data['dob'] == null || $data['dob'] == "")) {
                    array_push($error, "Please enter a correct date of birth");
                }

                $error = array_filter($error);

                if (empty($error)) {
                    $this->users_model->update_user($userId, $userEmail, $data['pass'], '', '', '', $data['lang']);

                    if ($userAddressId != "0" && $userAddressId != null) {
                        $this->users_model->update_user_address($userAddressId, $data['line_1'], $data['line_2'], $data['country'], $data['state'], $data['location'], $data['postcode']);
                    } else {
                        $id_address = $this->users_model->create_user_address($data['line_1'], $data['line_2'], $data['country'], $data['state'], $data['location'], $data['postcode']);
                        $this->users_model->add_student_address_id($id_address, $userId);
                    }

                    if (!$this->users_model->student_exist($userId)) {
                        $this->users_model->create_student($userId, $userAddressId, "shop user :".$this->payment_model->get_payment_user_date($userId), $dob, '');
                        $stud_name = $this->crud_model->get_user_name($userId);
                        $stud_mail = $this->crud_model->get_user_email($userId);

                        $this->event_model->trigger_user('account_creation_student', $isoLang, $userId, $data['pass']);
                    }

                    $this->profile_model->set_session_lang(); // set language
                    $this->session->set_userdata('profile_pending', 'student');

                    if ($is_paid) {
                        $sql = array(
                          "role_id" => '4',
                          "first_connection" => '0',
                        );
                        $this->db->set($sql);
                        $this->db->where('user_id', $userId);
                        $this->db->update('user');

                        if ($this->switch_profile('student')) {
                            //update balance
                            $this->customer_model->update_balance($userId, '1');
                            //auto assign
                            $courses = json_decode($data['courses'], true);
                            foreach ($courses as $course_id) {
                                $course = $this->course_model->get_entry((int) $course_id);
                                $product_transaction = $this->product_transaction_model->get_entry_unassigned((int) $userId, (int) $course_id);
                                $this->assignAll($userId, $course_id, $isoLang);

                                if ($product_transaction) {
                                    $this->product_transaction_model->update_entry($product_transaction->id, [
                                        'state' => Product_transaction_model::STATES['assigned'],
                                        'assigned_to' => (int) $userId,
                                        'assigned_at' => date('Y-m-d H:i:s')
                                    ]);

                                    if ($course) {
                                        $transaction = $this->wallet_model->get_transaction_by_id((int) $product_transaction->transaction_id);
                                        try {
                                            $this->event_model->notify_user('new_customer', $isoLang, $userId, [
                                                'student_enrolled' => $data['name'] . " " . $data['surname'],
                                                'product_buy' => $course->CourseName,
                                                'payment_amount' => $transaction->Payment_Amount,
                                                'payment_date' => date("d/m/Y"),

                                            ]);
                                        } catch (Exception $e) {
                                            echo "mail error :".$e->getMessage();
                                        }
                                    }
                                }
                            }
                        }
                    }

                    echo json_encode(['success' => true]);
                    return;
                }
            } elseif ($data['type'] === "parent") {
                // Parent profile here
                //verifications + check email
                $dob = str_replace('/', '-', $data['dob']);
                $dob = date('Y-m-d', strtotime($dob));
                $id_address = 0;

                $error = array_filter($error);

                if (!$this->users_model->update_user($userId, $userEmail, $data['pass'], '', '', $data['phone'], $data['lang'])) {
                    return false;
                }
                if ($userAddressId != "0" && $userAddressId != null) {
                    $this->users_model->update_user_address($userAddressId, $data['line_1'], $data['line_2'], $data['country'], $data['state'], $data['location'], $data['postcode']);
                } else {
                    $userAddressId = $this->users_model->create_user_address($data['line_1'], $data['line_2'], $data['country'], $data['state'], $data['location'], $data['postcode']);
                }

                if ($this->users_model->parent_exist($userId)) {
                    $this->users_model->update_parent_bis($userId, $userAddressId, "shop user :".$this->payment_model->get_payment_user_date($userId), $dob);
                } else {
                    $this->users_model->create_parent($userId, $userAddressId, "shop user :".$this->payment_model->get_payment_user_date($userId), $dob, '');
                }

                $this->profile_model->set_session_lang(); // set language
                $this->session->set_userdata('profile_pending', 'parent');

                if ($is_paid) {
                    //if paid switch profile
                    // chronology : parent > child > redirect
                    $sql = array(
                        "role_id" => '3',
                        "first_connection" => "0"
                    );
                    $this->db->set($sql);
                    $this->db->where('user_id', $userId);
                    $this->db->update('user');
                }

                echo json_encode(['success' => true]);
                return;
            }
        }

        echo json_encode(['success' => false]);
        return;
    }

    public function switch_profile($type)
    {
        //if paid switch else display error

        $this->session->unset_userdata('invited_login');
        $this->session->unset_userdata('invited_id');
        $this->session->unset_userdata('login_type');

        $this->session->set_userdata(array(
          $type.'_login' => '1',
          $type.'_id' => '1',
          'login_type' => $type,
          'notification' => "Votre profil ".$type." a été créé. Dès que votre achat aura été validé, vous serez averti par mail"
        ));

        $this->customer_model->update_user_state('is_final', '1', $this->session->userdata('userID'));

        return true;
    }

    // original from Student
    public function assignAll($studentId, $courseId, $isoLang)
    {
        //keep in mind to avoid duplicate content :√
        $last;
        $lessonsId = $this->crud_model->get_course_lessons($courseId);

        if (count($lessonsId) == 0) {
            $this->customer_model->set_preference($studentId, $courseId);
            return;
        }

        foreach ($lessonsId as $key => $lessonId) {
            $assigned = $this->users_model->checkAssigned($studentId, $courseId, $lessonId["ID"]);
            if (isset($studentId) && isset($courseId) && isset($lessonId) && ($assigned == 'false')) {
                $sql = array(
                  'course_id' => "$courseId",
                  'lesson_id' => $lessonId["ID"],
                  'student_id' => "$studentId",
                  'author' => 'From Customer :'.$this->session->userdata('userID')
                );
                $this->db->insert('course_student_new', $this->crud_model->cleanArray($sql));
                $this->event_model->trigger_first_lesson('Course_Student_First_Assignation', $isoLang, $studentId, $lessonId["ID"]);
            }
        }
        $this->customer_model->update_user_state('is_final', '1', $studentId);
        $this->customer_model->reset_preference($studentId, $courseId);
    }

    public function auto_complete_city()
    {
        $zip = $this->input->post('zip');
        $cities = $this->users_model->get_city_by_code($zip);
        echo json_encode($cities);
    }

}