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<?php
namespace Drupal\appointment_calendar\Form;
use Drupal\Core\Datetime\DrupalDateTime;
use Drupal\Core\Form\FormBase;
use Drupal\Core\Form\FormStateInterface;
class AppointmentCalendarForm extends FormBase {
public function getFormId() {
return 'appointment_calendar_form';
}
public function buildForm(array $form, FormStateInterface $form_state) {
$default_year = date('Y', time());
$form['appointment_from_date'] = [
'#type' => 'datetime',
'#title' => $this
->t('Appointment From date'),
'#default_value' => new DrupalDateTime('now'),
'#date_date_element' => 'date',
'#date_time_element' => 'none',
'#date_year_range' => $default_year . ':+3',
'#datepicker_options' => [
'minDate' => 0,
],
'#required' => TRUE,
];
$form['appointment_to_date'] = [
'#type' => 'datetime',
'#title' => $this
->t('Appointment To date'),
'#default_value' => new DrupalDateTime('now'),
'#date_date_element' => 'date',
'#date_time_element' => 'none',
'#date_year_range' => $default_year . ':+3',
'#datepicker_options' => [
'minDate' => 0,
],
'#required' => TRUE,
];
$form['appointment_slot'] = [
'#type' => 'textfield',
'#title' => $this
->t('No of Slots:'),
'#size' => 10,
'#maxlength' => 10,
'#required' => TRUE,
];
$form['appointment_fill'] = [
'#type' => 'button',
'#value' => $this
->t('Fill Slots'),
'#weight' => 36,
'#ajax' => [
'callback' => '::appointment_calendar_filltime_slots_callback_form',
'wrapper' => 'time-slot-check',
'method' => 'replace',
'effect' => 'fade',
],
];
$no_slots = isset($form_state
->getValues()['appointment_slot']) ? $form_state
->getValues()['appointment_slot'] : 0;
$form['slots']['#prefix'] = '<div id="time-slot-check">';
for ($i = 1; $i <= $no_slots; $i++) {
$form['slots']['time_slot_' . $i] = [
'#type' => 'textfield',
'#title' => $this
->t('Time Slot ' . $i . ' :'),
'#description' => $this
->t('Ex: 10:00-11:00, 13:00-14:00, etc.,'),
];
$form['slots']['time_slot_' . $i . '_capacity'] = [
'#type' => 'textfield',
'#title' => $this
->t('Slot ' . $i . ' Capacity'),
'#description' => $this
->t('Only Numeric'),
];
}
$form['slots']['#suffix'] = '</div>';
$form['slots']['#weight'] = 39;
if ($no_slots != 0) {
$form['slots']['submit'] = [
'#type' => 'submit',
'#value' => $this
->t('Submit'),
];
$form['slots']['reset'] = [
'#type' => 'submit',
'#value' => $this
->t('Reset'),
];
}
return $form;
}
public function appointment_calendar_filltime_slots_callback_form(array &$form, FormStateInterface $form_state) {
return $form['slots'];
}
public function validateForm(array &$form, FormStateInterface $form_state) {
$values = $form_state
->getValues();
$db_conn = \Drupal::database();
$op = (string) $values['op'];
if ($op == $this
->t('Reset')) {
$form_state
->setRedirect('appointment_calendar.subscribers');
}
if ($op == $this
->t('Submit')) {
$start_date = $values['appointment_from_date']
->getTimestamp();
$end_date = $values['appointment_to_date']
->getTimestamp();
$dates = appointment_calendar_daysbetween($start_date, $end_date);
$check_count = 0;
foreach ($dates as $each_date) {
$date_check = $db_conn
->select('appointment_date', 'ad');
$date_check
->fields('ad', [
'date',
]);
$date_check
->condition('date', $each_date, '=');
$date_result = $date_check
->execute()
->fetchField();
if (!empty($date_result)) {
$check_count++;
$date = date('Y-m-d', $each_date);
$this
->messenger()
->addError($date . ' Already filled');
}
}
if ($check_count > 0) {
$form_state
->setErrorByName('appointment_from_date', t('Verify and try adding again'));
}
if ($start_date > $end_date) {
$form_state
->setErrorByName('appointment_to_date', t('End Date Should be greater than Start Date'));
}
if ($start_date < strtotime(date('Y-m-d', time()))) {
$form_state
->setErrorByName('appointment_start_date', t('Start Date Should be greater than Today(s) Date'));
}
$slots = $values['appointment_slot'];
$time_slots_check = [];
for ($i = 1; $i <= $slots; $i++) {
$time_slot = $values['time_slot_' . $i];
$time_capacity = $values['time_slot_' . $i . '_capacity'];
$regex = '/^(?:[01][0-9]|2[0-3]):[0-5][0-9]-(?:[01][0-9]|2[0-3]):[0-5][0-9]$/';
if (!preg_match($regex, $time_slot)) {
$form_state
->setErrorByName('time_slot_' . $i, t('Time slot format should be 00:00-00:00 (in between 24 hrs).'));
}
if ($time_capacity < 0) {
$form_state
->setErrorByName('time_slot_' . $i . '_capacity', t('Slot Capacity should be greater than 0.'));
}
if (empty($time_capacity)) {
$form_state
->setErrorByName('time_slot_' . $i . '_capacity', t('Fill time slot capacity.'));
}
$time_slots_check[] = $time_slot;
$vals = array_count_values($time_slots_check);
if ($vals[$time_slot] > 1) {
$form_state
->setErrorByName('time_slot_' . $i, t('Time slot cannot redeclare twice or more.'));
}
}
}
}
public function submitForm(array &$form, FormStateInterface $form_state) {
$values = $form_state
->getValues();
$db_conn = \Drupal::database();
$op = (string) $values['op'];
if ($op == $this
->t('Submit')) {
$start_date = $values['appointment_from_date']
->getTimestamp();
$end_date = $values['appointment_to_date']
->getTimestamp();
$slots = $values['appointment_slot'];
for ($i = 1; $i <= $slots; $i++) {
$time_slot = $values['time_slot_' . $i];
$time_capacity = $values['time_slot_' . $i . '_capacity'];
$slots_save[$time_slot] = $time_slot;
$slots_capacity[$time_slot] = $time_capacity;
}
ksort($slots_save);
ksort($slots_capacity);
$dates = appointment_calendar_daysbetween($start_date, $end_date);
foreach ($dates as $each_date) {
$db_conn
->merge('appointment_date')
->key([
'date' => $each_date,
])
->fields([
'no_slots' => $slots,
'slot_values' => json_encode($slots_save),
'slot_capacity' => json_encode($slots_capacity),
])
->execute();
}
$this
->messenger()
->addStatus(t('Slot(s) created successfully'));
}
}
}