Add config form for event series, and tie the values in the create form to the config settings

config/schema/recurring_events.schema.yml

-recurring_events.config:
+recurring_events.eventseries.config:
   type: config_object
-  label: 'Recurring Events'
+  label: 'Recurring Events Series Config'
   mapping:
     interval:
       type: integer
@@ -13,4 +13,7 @@ recurring_events.config:
       label: 'The latest an event can start'
     time_format:
       type: string
-      label: 'The formatting of times when creating events'
\ No newline at end of file
+      label: 'The formatting of times when creating events'
+    days:
+      type: string
+      label: 'The days of the week available when creating events'
\ No newline at end of file

recurring_events.permissions.yml

@@ -14,6 +14,10 @@ delete eventseries entity:
 clone eventseries entity:
   title: 'Clone eventseries entity'
   description: 'Clone existing event series entities'
+administer eventseries entity:
+  title: 'Administer eventseries entity'
+  description: 'Make changes to the event series entity type.'
+  restrict access: true
 
 # Event Series Administration.
 administer eventseries:

recurring_events.routing.yml

@@ -54,4 +54,13 @@ entity.eventseries.collection:
   path: '/events/series'
   requirements:
   # Checks for permission directly.
-    _permission: 'access eventseries overview'
\ No newline at end of file
+    _permission: 'access eventseries overview'
+
+# Event Series settings admin page.
+eventseries.settings:
+  path: '/admin/structure/events/series/settings'
+  defaults:
+    _form: '\Drupal\recurring_events\Form\EventSeriesSettingsForm'
+    _title: 'Event Series Settings'
+  requirements:
+    _permission: 'administer eventseries entity'
\ No newline at end of file

src/Form/EventSeriesSettingsForm.php

+<?php
+
+namespace Drupal\recurring_events\Form;
+
+use Drupal\Core\Form\ConfigFormBase;;
+use Drupal\Core\Form\FormStateInterface;
+use Drupal\Core\Url;
+use Drupal\Core\Link;
+
+/**
+ * Class EventSeriesSettingsForm.
+ *
+ * @ingroup recurring_events
+ */
+class EventSeriesSettingsForm extends ConfigFormBase {
+
+  /**
+   * Returns a unique string identifying the form.
+   *
+   * @return string
+   *   The unique string identifying the form.
+   */
+  public function getFormId() {
+    return 'eventseries_settings';
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function getEditableConfigNames() {
+    return ['recurring_events.eventseries.config'];
+  }
+
+  /**
+   * Form submission handler.
+   *
+   * @param array $form
+   *   An associative array containing the structure of the form.
+   * @param Drupal\Core\Form\FormStateInterface $form_state
+   *   An associative array containing the current state of the form.
+   */
+  public function submitForm(array &$form, FormStateInterface $form_state) {
+    $this->config('recurring_events.eventseries.config')
+      ->set('interval', $form_state->getValue('interval'))
+      ->set('min_time', $form_state->getValue('min_time'))
+      ->set('max_time', $form_state->getValue('max_time'))
+      ->set('time_format', $form_state->getValue('time_format'))
+      ->set('days', implode(',', array_filter($form_state->getValue('days'))))
+      ->save();
+
+    parent::submitForm($form, $form_state);
+  }
+
+  /**
+   * Define the form used for Events settings.
+   *
+   * @param array $form
+   *   An associative array containing the structure of the form.
+   * @param Drupal\Core\Form\FormStateInterface $form_state
+   *   An associative array containing the current state of the form.
+   *
+   * @return array
+   *   Form definition array.
+   */
+  public function buildForm(array $form, FormStateInterface $form_state) {
+    $config = $this->config('recurring_events.eventseries.config');
+
+    $form['interval'] = [
+      '#type' => 'number',
+      '#title' => $this->t('Event Series Time Intervals'),
+      '#required' => TRUE,
+      '#description' => $this->t('Enter the interval, in minutes, to be used to separate event start times. Default is 15 minutes.'),
+      '#default_value' => $config->get('interval'),
+    ];
+
+    $form['min_time'] = [
+      '#type' => 'textfield',
+      '#title' => $this->t('Event Series Minimum Time'),
+      '#required' => TRUE,
+      '#description' => $this->t('Enter the earliest an event can start, in h:ia format. For example 08:00am.'),
+      '#default_value' => $config->get('min_time'),
+    ];
+
+    $form['max_time'] = [
+      '#type' => 'textfield',
+      '#title' => $this->t('Event Series Maximum Time'),
+      '#required' => TRUE,
+      '#description' => $this->t('Enter the latest an event can start, in h:ia format. For example 11:45pm.'),
+      '#default_value' => $config->get('max_time'),
+    ];
+
+    $url = Url::fromUri('https://secure.php.net/manual/en/function.date.php');
+    $link = Link::fromTextAndUrl($this->t('PHP time format'), $url);
+    $form['time_format'] = [
+      '#type' => 'textfield',
+      '#title' => $this->t('Event Series Time Format'),
+      '#required' => TRUE,
+      '#description' => $this->t('Enter the @link used when selecting times. Default is h:i A.', [
+        '@link' => $link->toString(),
+      ]),
+      '#default_value' => $config->get('time_format'),
+    ];
+
+    $days = [
+      'monday' => t('Monday'),
+      'tuesday' => t('Tuesday'),
+      'wednesday' => t('Wednesday'),
+      'thursday' => t('Thursday'),
+      'friday' => t('Friday'),
+      'saturday' => t('Saturday'),
+      'sunday' => t('Sunday'),
+    ];
+
+    $form['days'] = [
+      '#type' => 'checkboxes',
+      '#title' => $this->t('Event Series Days'),
+      '#required' => TRUE,
+      '#options' => $days,
+      '#description' => $this->t('Select the days of the week available when creating events.'),
+      '#default_value' => explode(',', $config->get('days')),
+    ];
+
+    return parent::buildForm($form, $form_state);
+  }
+
+}

src/Plugin/Field/FieldWidget/WeeklyRecurringDateWidget.php

@@ -110,19 +110,15 @@ class WeeklyRecurringDateWidget extends DateRangeDefaultWidget {
   protected function getTimeOptions() {
     $times = [];
 
-    // TODO: Hook these up to configs.
-    /* $config = \Drupal::config('recurring_events.config');
+    $config = \Drupal::config('recurring_events.eventseries.config');
     // Take interval in minutes, and multiply it by 60 to convert to seconds.
     $interval = $config->get('interval') * 60;
     $min_time = $config->get('min_time');
     $max_time = $config->get('max_time');
-    $format = $config->get('time_format'); */
+    $format = $config->get('time_format');
 
-    // Take interval in minutes, and multiply it by 60 to convert to seconds.
-    $interval = 15 * 60;
-    $min_time = DrupalDateTime::createFromFormat('h:ia', '08:00am');
-    $max_time = DrupalDateTime::createFromFormat('h:ia', '11:00pm');
-    $format = 'h:i A';
+    $min_time = DrupalDateTime::createFromFormat('h:ia', $min_time);
+    $max_time = DrupalDateTime::createFromFormat('h:ia', $max_time);
 
     // Convert the mininum time to a number of seconds after midnight.
     $lower_hour = $min_time->format('H') * 60 * 60;
@@ -201,19 +197,11 @@ class WeeklyRecurringDateWidget extends DateRangeDefaultWidget {
    *   An array of days suitable for a checkbox field.
    */
   protected function getDayOptions() {
-    // TODO: Hook these up to configs.
-    /* $config = \Drupal::config('recurring_events.config');
-    $days = $config->get('days'); */
-
-    $days = [
-      'monday' => t('Monday'),
-      'tuesday' => t('Tuesday'),
-      'wednesday' => t('Wednesday'),
-      'thursday' => t('Thursday'),
-      'friday' => t('Friday'),
-      'saturday' => t('Saturday'),
-      'sunday' => t('Sunday'),
-    ];
+    $config = \Drupal::config('recurring_events.eventseries.config');
+    $days = explode(',', $config->get('days'));
+    // All labels should have a capital first letter as they are proper nouns.
+    $day_labels = array_map('ucwords', $days);
+    $days = array_combine($days, $day_labels);
 
     \Drupal::moduleHandler()->alter('recurring_events_days', $days);