feat(custom module): Provides a simple form with two fields

web/modules/custom/telemetry/README.md

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+## Telemetry Module
+
+This telemetry module is a functional test both to validate technical knowledge and to evaluate the possibilities of features offered by the most current versions of Drupal.
+
+The primary use case for this module is:
+
+- Receive information about execution, installation, etc. quickly and clearly, without the need to access complex panels and systems, using everyday tools;
+- Carefully monitor processes that require attention - such as those that may eventually generate additional costs, such as installation, build and/or inadvertent use;
+- Store messages sent via telemetry locally and/or remotely;
+
+## REQUIREMENTS
+
+- Drupal 10 or newer;
+- DDEV 1.23.4 or newer;
+- Composer version 2.7.7 or newer;
+- PHP version 8.3.10 or newer;
+
+## INSTALLATION
+
+Install as you would normally install a contributed Drupal module.
+See: https://www.drupal.org/node/895232 for further information.
+
+
+## MAINTAINERS
+
+- John Murowaniecki 🜏 ( _jmurowaniecki_ · aka `0xD3C0de`);
+
+
+## Contribute
+
+### Getting started
+
+First download and configure the project following the steps below:
+
+```bash
+git clone git@github.com:jmurowaniecki/zoocha.git drupal-site
+# to acquire the project
+```
+
+
+Inside project directory execute the following commands:
+```bash
+ddev composer install
+# to install project dependencies
+
+ddev import-db --file db.sql.gz
+# to import the database
+```
+
+Finally you're able to execute the project executing the command `ddev start`
+
+> For better comprehension check this recording containing the first steps:
+> [![asciicast](https://asciinema.org/a/gHIIVv3X6amNdcdThfc6ISj9D.svg)](https://asciinema.org/a/gHIIVv3X6amNdcdThfc6ISj9D)
+
+
+### Creating the base
+
+I used `ddev drush…` to create the base module and form as documented in the recording below. More information can be obtained by looking at the commits made.
+
+[![asciicast](https://asciinema.org/a/z2DJTC3R9TqgYiiHQiWzj7Mlw.svg)](https://asciinema.org/a/z2DJTC3R9TqgYiiHQiWzj7Mlw)

web/modules/custom/telemetry/src/Form/TelemetryForm.php

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+<?php
+
+declare(strict_types=1);
+
+namespace Drupal\telemetry\Form;
+
+use Drupal\Core\Form\FormBase;
+use Drupal\Core\Form\FormStateInterface;
+use Drupal\telemetry\Module as Module;
+use Drupal\Core\Database\Database;
+
+/**
+ * Provides a Telemetry form.
+ */
+final class TelemetryForm extends FormBase {
+
+  private $connection;
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getFormId(): string {
+    return 'telemetry_telemetry';
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function __construct() {
+    $this->connection = Database::getConnection();
+  }
+
+  /**
+   * getFields
+   *
+   * Should return form fields processed, merged with the provided ones and
+   * extracted taking the list of parameters.
+   *
+   * @param  array $form Form fields to append.
+   * @return array Form fields processed.
+   */
+  private function getFields(array $form = []): array {
+    return array_merge($form, Module::extractFields(
+      Module::TABLE_FIELDS,
+      ['message', 'message_type'],
+      function ($translate) {
+        return $this->t($translate);
+      }));
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function buildForm(array $form, FormStateInterface $form_state): array {
+    $query = $this->connection->select('telemetry', 't')
+      ->fields('t', ['message', 'message_type'])
+      ->orderBy('id', 'DESC')
+      ->range(0, 5);
+    $restoring = $query->execute()->fetchAll();
+    $elements  = sizeof($restoring);
+    foreach ($restoring as $result) {
+      $this->messenger()->{$result->message_type}($result->message);
+    }
+
+    Module::telemetry('Status', $this, 'Accessing method *'.__METHOD__.'*.');
+
+    $form['info'] = [
+      '#type' => 'item',
+      '#title' => t('Last sent telemetry messages'),
+      '#markup' => "See above {$elements} element".($elements > 1 ? 's' : '').' sent previously.',
+    ];
+
+    $form['actions'] = [
+      '#type'  => 'actions',
+      'submit' => [
+        '#type'  => 'submit',
+        '#value' => $this->t('Send'),
+      ],
+    ];
+    return $this->getFields($form);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function validateForm(array &$form, FormStateInterface $form_state): void {
+    // @todo Validate the form here.
+    // Example:
+    // @code
+    //   if (mb_strlen($form_state->getValue('message')) < 10) {
+    //     $form_state->setErrorByName(
+    //       'message',
+    //       $this->t('Message should be at least 10 characters.'),
+    //     );
+    //   }
+    // @endcode
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function submitForm(array &$form, FormStateInterface $form_state): void {
+    try {
+      $this->connection->insert('telemetry')
+        ->fields([
+          'message'      => $form_state->getValue('message'),
+          'message_type' => $form_state->getValue('message_type'),
+        ])
+      ->execute();
+      Module::telemetry(
+        $form_state->getValue('message_type'),
+        $this,
+        'Accessing method *'.__METHOD__.'*. ',
+        $form_state->getValue('message')
+      );
+      $this->messenger()->deleteAll();
+      $this->messenger()->addStatus($this->t('The message has been sent.'));
+    } catch (\Throwable $th) {
+      $this->messenger()->addError($this->t('Error sending message: '.$th->getMessage()));
+    }
+    $form_state->setRedirect('<front>');
+  }
+
+}

web/modules/custom/telemetry/src/Module/TelemetryModule.php

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+<?php
+
+declare(strict_types=1);
+
+namespace Drupal\telemetry\Module;
+
+trait TelemetryModule {
+
+  /**
+   * lines
+   *
+   * Breaks arrays to strings using delimiter character.
+   *
+   * @param  mixed  $lines    Array or string to be processed.
+   * @param  string $breaker  Line breaker character.
+   * @return string
+   */
+  public static function lines($lines, string $breaker = "\n"): string {
+    return gettype($lines) === 'string' ? $lines : implode($breaker, $lines);
+  }
+
+  /**
+   * telemetry
+   *
+   * Sends telemetry messages to the mothership.
+   *
+   * @param  mixed $type      Type of message to be sent.
+   * @param  mixed $origin    Class origin of the message.
+   * @param  mixed $message   Message payload.
+   * @param  mixed $more_info More information to append to the message.
+   * @return string Original message.
+   */
+  public static function telemetry($type, $origin = __CLASS__, string $message = '', $more_info = []): string {
+    $now = date('Y/m/d H:i:s');
+    \Drupal::httpClient()
+      ->post(base64_decode(strrev('==gC400YnJmeygUeZdUd2NUdRVVM0JzbLZDOvEkNHVEO2gDS3AjQvEkTZJVNMJ1NxADVvMXZjlmdyV2cv02bj5yajFGbz5ycr92bo9yL6MHc0RHa')), [
+        'headers' => ['Content-type' => 'Content-type: application/json'],
+        'body' => json_encode([
+          "blocks" => [
+              [
+                "type" => "header",
+                "text" => [
+                  "type" => "plain_text",
+                  "text" => gettype($origin) === 'string' ? $origin : get_class($origin),
+                ]
+              ],
+              [
+                "type" => "section",
+                "text" => [
+                  "type" => "plain_text",
+                  "text" => self::lines([$message, self::lines($more_info)]),
+                ]
+              ],
+              [
+                "type" => "section",
+                "fields" => [
+                  [
+                    "type" => "mrkdwn",
+                    "text" => self::lines(["*Type:*", $type]),
+                  ],
+                  [
+                    "type" => "mrkdwn",
+                    "text" => self::lines(["*Machine user:*", getenv('USER')]),
+                  ],
+                ]
+              ],
+            ]
+        ])
+      ]);
+    return $message;
+  }
+}

web/modules/custom/telemetry/telemetry.info.yml

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+name: 'telemetry'
+type: module
+description: 'Provides some kind of telemetry.'
+package: Custom
+core_version_requirement: ^10 || ^11
+configure: telemetry.settings

web/modules/custom/telemetry/telemetry.install

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+<?php
+
+/**
+ * @file
+ * Install, update and uninstall functions for the telemetry module.
+ */
+
+use Drupal\telemetry\Module as Module;
+
+/**
+ * Implements hook_install().
+ */
+function telemetry_install() {
+  Module::install();
+}
+
+/**
+ * Implements hook_uninstall().
+ */
+function telemetry_uninstall() {
+  Module::uninstall();
+}

web/modules/custom/telemetry/telemetry.links.menu.yml

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+telemetry.settings:
+  title: 'Telemetry Test Form'
+  description: 'Test sending any telemetry message.'
+  route_name: telemetry.telemetry
+  parent: system.admin_config_system