I got an email trying to get me to subscribe to spotffix (https://www.doboard.com/spotfix):

It seemed like an interesting idea, so I asked Gemini (Flash Extended) to create a Drupal 11 module that would do this.

It took me about 30 minutes to enter all of the following code, but it worked the first time I tried it!

1. Understand the Feature Set of Spotfix:

   • Spotfix is a website feedback, bug reporting, and annotation tool.

   • It allows users to highlight text or click a specific DOM element on a website to submit a "Spot" (a bug report, fix request, or comment) anchored directly to that element/location.

   • It pops up a compact widget where users write descriptions, optionally attach files or upload a screenshot, and send it.

   • These entries land in a centralized workspace/database backend to review, assign, and resolve.

   • Can be open to all visitors or private for a team/clients.

2. Determine Drupal 11 Implementation Strategy:

   • To implement this as a standalone custom native Drupal 11 module (without relying on the external doBoard service), we need:

     1. A backend data structure (Entity type or Node type or custom table) to store "Spots" (feedback submissions). Let's use a custom Content Entity type (spotfix_submission) or a Node type. A custom content entity type is much cleaner and more professional for an annotation/feedback tool.

     2. A frontend JavaScript widget that hooks onto the DOM. It listens for text selection (window.getSelection()) or a specific key/click combo (like a toggle button "Enable Spotfix Mode"), finds the CSS selector of the targeted element, extracts text, and opens a small floating popup modal/form.

     3. An API endpoint (Controller) in Drupal to receive the JSON data sent by the JavaScript widget via fetch(). The endpoint processes the feedback description, element selector, selected text, page URL, and handles file attachments (managed files).

     4. A backend admin dashboard (Views or a custom Controller/ListBuilder) for site administrators to view, assign, update status (Open, In Progress, Resolved), and delete submission items.

     5. Permissions (spotfix.submit, spotfix.administer).

3. Refine Implementation Details for Drupal 11:

   • Drupal 11 uses modern PHP 8.2/8.3 syntax, strict type hints, and updated service/entity registration structures.

   • Files required:

     • spotfix.info.yml: Module metadata, core_version_requirement: ^11.

     • spotfix.routing.yml: Routing for the API endpoint, admin lists, configuration.

     • spotfix.permissions.yml: Permissions definition.

     • src/Entity/SpotSubmission.php: Custom content entity defining fields like: url, css_selector, selected_text, notes, status, uid, created, attachment.

     • src/Controller/SpotfixApiController.php: Receives POST payloads from the JavaScript widget, creates the SpotSubmission entity, handles base64 or file uploads if any.

     • js/spotfix.js: Frontend logic for text selection/element targeting, building the overlay widget/modal, and communicating with the API.

     • css/spotfix.css: Styling for the overlay widget.

     • spotfix.libraries.yml: Registers the JS and CSS so it can be conditionally attached to pages (or attached globally for authenticated/authorized users).

4. Draft Code Blocks clearly:

   • Let's build a modular architecture pattern that makes this easy to implement as a real, working module.

   • Make sure to follow the system instructions regarding images. No explicit intent to learn/understand an abstract concept requiring a conceptual diagram here; the user is explicitly asking to draft a custom module/artifact. No diagram tag should be included.

5. Let's organize the module architecture step-by-step:

   • Directory structure outline.

   • Code for core files.

   • Explanation of how it works.

6. Refining PHP & Drupal 11 compliance:

   • Use modern annotations or attributes? Drupal 10.2+ and Drupal 11 transition to PHP Attributes for plugins and routes, but for Content Entities, @ContentEntityType annotations are still standard, though attributes are arriving. Let's provide a robust, clean annotation entity definition or stick to standard entity fields using BaseFieldDefinition.

   • Ensure strict parameter typing and PSR-12/PER coding standards.

   • The JS snippet should cleanly capture window.getSelection(), compute a simple CSS selector path (like tracing up parent nodes), and show a simple modal.

Let's organize the response logically to make it highly readable and production-ready.Building an on-page feedback and annotation system like Spotfix directly inside Drupal 11 is highly effective. Instead of forcing you to pay for an external platform, you can handle the tracking natively using Drupal's robust content entity framework, an API route, and a vanilla JavaScript frontend injector.

Here is a complete, custom architecture for a custom Drupal 11 module named spotfix. It creates a lightweight annotation engine that lets allowed users highlight elements on your live site, input feedback, and save it straight into a dedicated administrative dashboard.

📂 Module Directory Structure

Create this folder structure inside your Drupal installation at modules/custom/spotfix/:

spotfix/
├── spotfix.info.yml
├── spotfix.libraries.yml
├── spotfix.routing.yml
├── spotfix.permissions.yml
├── spotfix.module
├── css/
│   └── spotfix.css
├── js/
│   └── spotfix.js
└── src/
   ├── Entity/
   │   └── SpotSubmission.php
   └── Controller/
       └── SpotfixApiController.php

spotfix/
├── spotfix.info.yml
├── spotfix.libraries.yml
├── spotfix.routing.yml
├── spotfix.permissions.yml
├── spotfix.module
├── css/
│   └── spotfix.css
├── js/
│   └── spotfix.js
└── src/
    ├── Entity/
    │   └── SpotSubmission.php
    └── Controller/
        └── SpotfixApiController.php

📄 1. Module Configuration & Registry Files

spotfix.info.yml

Defines the module metadata explicitly targeting Drupal 11.

name: 'Spotfix Annotator'
type: module
description: 'In-context on-page website feedback, bug reporting, and annotation tool.'
package: Custom
core_version_requirement: ^11
dependencies:
 - drupal:file
 - drupal:user

name: 'Spotfix Annotator'
type: module
description: 'In-context on-page website feedback, bug reporting, and annotation tool.'
package: Custom
core_version_requirement: ^11
dependencies:
  - drupal:file
  - drupal:user

spotfix.libraries.yml

Registers the asset pipeline for the frontend overlay widget.

widget:
 version: 1.0
 css:
   theme:
     css/spotfix.css: {}
 js:
   js/spotfix.js: {}
 dependencies:
   - core/drupal
   - core/once
   - core/drupalSettings

widget:
  version: 1.0
  css:
    theme:
      css/spotfix.css: {}
  js:
    js/spotfix.js: {}
  dependencies:
    - core/drupal
    - core/once
    - core/drupalSettings

spotfix.permissions.yml

Separates the public submission channel from back-office administration privileges.

submit spots:
 title: 'Submit page annotations and feedback'
 description: 'Allows users to see the overlay widget and drop annotations on the DOM.'
administer spots:
 title: 'Administer feedback and spots'
 description: 'Access the backend report workspace to assign and mark entries resolved.'

submit spots:
  title: 'Submit page annotations and feedback'
  description: 'Allows users to see the overlay widget and drop annotations on the DOM.'
administer spots:
  title: 'Administer feedback and spots'
  description: 'Access the backend report workspace to assign and mark entries resolved.'

spotfix.routing.yml

Sets up the decoupled JSON REST endpoint for submissions and the administration report panel.

spotfix.api.submit:
  path: '/api/spotfix/submit'
  defaults:
    _controller: '\Drupal\spotfix\Controller\SpotfixApiController::submit'
  requirements:
    _permission: 'submit spots'
    _method: 'POST'

spotfix.admin_report:
  path: '/admin/content/spots'
  defaults:
    _controller: '\Drupal\spotfix\Controller\SpotfixApiController::adminDashboard'
    _title: 'Spotfix Workspace'
  requirements:
    _permission: 'administer spots'

spotfix.api.submit:
  path: '/api/spotfix/submit'
  defaults:
    _controller: '\Drupal\spotfix\Controller\SpotfixApiController::submit'
  requirements:
    _permission: 'submit spots'
    _method: 'POST'

spotfix.admin_report:
  path: '/admin/content/spots'
  defaults:
    _controller: '\Drupal\spotfix\Controller\SpotfixApiController::adminDashboard'
    _title: 'Spotfix Workspace'
  requirements:
    _permission: 'administer spots'

💾 2. The Storage Engine (Custom Content Entity)

src/Entity/SpotSubmission.php

Using a custom content entity keeps your primary node tables completely clean of internal development reports, tracking metadata gracefully.

<?php

namespace Drupal\spotfix\Entity;

use Drupal\Core\Entity\ContentEntityBase;
use Drupal\Core\Entity\EntityTypeInterface;
use Drupal\Core\Field\BaseFieldDefinition;

/**
 * Defines the Spot Submission entity.
 *
 * @ContentEntityType(
 * id = "spot_submission",
 * label = @Translation("Spot Submission"),
 * base_table = "spot_submission",
 * entity_keys = {
 * "id" = "id",
 * "uuid" = "uuid",
 * },
 * )
 */
class SpotSubmission extends ContentEntityBase {

  public static function baseFieldDefinitions(EntityTypeInterface $entity_type) {
    $fields = parent::baseFieldDefinitions($entity_type);

    $fields['url'] = BaseFieldDefinition::create('string')
      ->setLabel(t('Page URL'))
      ->setRequired(TRUE);

    $fields['css_selector'] = BaseFieldDefinition::create('string')
      ->setLabel(t('CSS Selector Path'))
      ->setRequired(TRUE);

    $fields['selected_text'] = BaseFieldDefinition::create('text_long')
      ->setLabel(t('Highlighted Selection Text'));

    $fields['notes'] = BaseFieldDefinition::create('text_long')
      ->setLabel(t('Feedback Notes'))
      ->setRequired(TRUE);

    $fields['status'] = BaseFieldDefinition::create('list_string')
      ->setLabel(t('Status'))
      ->setDefaultValue('open')
      ->setSettings([
        'allowed_values' => [
          'open' => 'Open',
          'progress' => 'In Progress',
          'resolved' => 'Resolved',
        ],
      ]);

    $fields['uid'] = BaseFieldDefinition::create('entity_reference')
      ->setLabel(t('Reporter'))
      ->setSetting('target_type', 'user')
      ->setDefaultValue(\Drupal::currentUser()->id());

    $fields['created'] = BaseFieldDefinition::create('created')
      ->setLabel(t('Created Timestamp'));

    return $fields;
  }
}

<?php

namespace Drupal\spotfix\Entity;

use Drupal\Core\Entity\ContentEntityBase;
use Drupal\Core\Entity\EntityTypeInterface;
use Drupal\Core\Field\BaseFieldDefinition;

/**
 * Defines the Spot Submission entity.
 *
 * @ContentEntityType(
 * id = "spot_submission",
 * label = @Translation("Spot Submission"),
 * base_table = "spot_submission",
 * entity_keys = {
 * "id" = "id",
 * "uuid" = "uuid",
 * },
 * )
 */
class SpotSubmission extends ContentEntityBase {

  public static function baseFieldDefinitions(EntityTypeInterface $entity_type) {
    $fields = parent::baseFieldDefinitions($entity_type);

    $fields['url'] = BaseFieldDefinition::create('string')
      ->setLabel(t('Page URL'))
      ->setRequired(TRUE);

    $fields['css_selector'] = BaseFieldDefinition::create('string')
      ->setLabel(t('CSS Selector Path'))
      ->setRequired(TRUE);

    $fields['selected_text'] = BaseFieldDefinition::create('text_long')
      ->setLabel(t('Highlighted Selection Text'));

    $fields['notes'] = BaseFieldDefinition::create('text_long')
      ->setLabel(t('Feedback Notes'))
      ->setRequired(TRUE);

    $fields['status'] = BaseFieldDefinition::create('list_string')
      ->setLabel(t('Status'))
      ->setDefaultValue('open')
      ->setSettings([
        'allowed_values' => [
          'open' => 'Open',
          'progress' => 'In Progress',
          'resolved' => 'Resolved',
        ],
      ]);

    $fields['uid'] = BaseFieldDefinition::create('entity_reference')
      ->setLabel(t('Reporter'))
      ->setSetting('target_type', 'user')
      ->setDefaultValue(\Drupal::currentUser()->id());

    $fields['created'] = BaseFieldDefinition::create('created')
      ->setLabel(t('Created Timestamp'));

    return $fields;
  }
}

⚙️ 3. Backend Logic & Controller

src/Controller/SpotfixApiController.php

Manages inbound JSON payloads sent asynchronously by the JavaScript client and builds a simple administrative table report interface.

<?php

namespace Drupal\spotfix\Controller;

use Drupal\Core\Controller\ControllerBase;
use Symfony\Component\HttpFoundation\JsonResponse;
use Symfony\Component\HttpFoundation\Request;
use Drupal\spotfix\Entity\SpotSubmission;

class SpotfixApiController extends ControllerBase {

  public function submit(Request $request): JsonResponse {
    $data = json_decode($request->getContent(), TRUE);

    if (empty($data['notes']) || empty($data['url']) || empty($data['css_selector'])) {
      return new JsonResponse(['error' => 'Missing essential payload fields.'], 400);
    }

    $spot = SpotSubmission::create([
      'url' => $data['url'],
      'css_selector' => $data['css_selector'],
      'selected_text' => $data['selected_text'] ?? '',
      'notes' => $data['notes'],
      'status' => 'open',
    ]);
    $spot->save();

    return new JsonResponse([
      'message' => 'Spot logged successfully!',
      'id' => $spot->id()
    ], 200);
  }

  public function adminDashboard(): array {
    $storage = $this->entityTypeManager()->getStorage('spot_submission');
    $ids = $storage->getQuery()->sort('created', 'DESC')->accessCheck(FALSE)->execute();
    $spots = $storage->loadMultiple($ids);

    $header = [t('ID'), t('Date'), t('Target Page'), t('Selected Context'), t('Feedback Notes'), t('Status')];
    $rows = [];

    foreach ($spots as $spot) {
      $rows[] = [
        $spot->id(),
        \Drupal::service('date.formatter')->format($spot->get('created')->value, 'short'),
        [
          'data' => [
            '#type' => 'link',
            '#title' => t('View Page'),
            '#url' => \Drupal\Core\Url::fromUri($spot->get('url')->value),
          ]
        ],
        $spot->get('selected_text')->value ?: 'N/A (Direct Click)',
        $spot->get('notes')->value,
        $spot->get('status')->value,
      ];
    }

    return [
      '#type' => 'table',
      '#header' => $header,
      '#rows' => $rows,
      '#empty' => t('No feedback records captured yet.'),
    ];
  }
}

<?php

namespace Drupal\spotfix\Controller;

use Drupal\Core\Controller\ControllerBase;
use Symfony\Component\HttpFoundation\JsonResponse;
use Symfony\Component\HttpFoundation\Request;
use Drupal\spotfix\Entity\SpotSubmission;

class SpotfixApiController extends ControllerBase {

  public function submit(Request $request): JsonResponse {
    $data = json_decode($request->getContent(), TRUE);

    if (empty($data['notes']) || empty($data['url']) || empty($data['css_selector'])) {
      return new JsonResponse(['error' => 'Missing essential payload fields.'], 400);
    }

    $spot = SpotSubmission::create([
      'url' => $data['url'],
      'css_selector' => $data['css_selector'],
      'selected_text' => $data['selected_text'] ?? '',
      'notes' => $data['notes'],
      'status' => 'open',
    ]);
    $spot->save();

    return new JsonResponse([
      'message' => 'Spot logged successfully!',
      'id' => $spot->id()
    ], 200);
  }

  public function adminDashboard(): array {
    $storage = $this->entityTypeManager()->getStorage('spot_submission');
    $ids = $storage->getQuery()->sort('created', 'DESC')->accessCheck(FALSE)->execute();
    $spots = $storage->loadMultiple($ids);

    $header = [t('ID'), t('Date'), t('Target Page'), t('Selected Context'), t('Feedback Notes'), t('Status')];
    $rows = [];

    foreach ($spots as $spot) {
      $rows[] = [
        $spot->id(),
        \Drupal::service('date.formatter')->format($spot->get('created')->value, 'short'),
        [
          'data' => [
            '#type' => 'link',
            '#title' => t('View Page'),
            '#url' => \Drupal\Core\Url::fromUri($spot->get('url')->value),
          ]
        ],
        $spot->get('selected_text')->value ?: 'N/A (Direct Click)',
        $spot->get('notes')->value,
        $spot->get('status')->value,
      ];
    }

    return [
      '#type' => 'table',
      '#header' => $header,
      '#rows' => $rows,
      '#empty' => t('No feedback records captured yet.'),
    ];
  }
}

spotfix.module

Attaches the interactive overlay asset library hook globally to any user account assigned the submit spots permission flag.

<?php

/**
 * Implements hook_page_attachments().
 */
function spotfix_page_attachments(array &$attachments) {
  if (\Drupal::currentUser()->hasPermission('submit spots')) {
    $attachments['#attached']['library'][] = 'spotfix/widget';
  }
}

<?php

/**
 * Implements hook_page_attachments().
 */
function spotfix_page_attachments(array &$attachments) {
  if (\Drupal::currentUser()->hasPermission('submit spots')) {
    $attachments['#attached']['library'][] = 'spotfix/widget';
  }
}

🎨 4. Frontend Client Engine

js/spotfix.js

This engine runs directly in the client browser, calculating the programmatic path of any clicked element or highlight selection and loading the feedback modal inline.

(function (Drupal, once) {
  'use strict';

  Drupal.behaviors.spotfixWidget = {
    attach: function (context) {
      once('spotfix-init', 'body', context).forEach(function (body) {
        
        // 1. Build and Inject Activation Controls
        const toggleBtn = document.createElement('button');
        toggleBtn.id = 'spotfix-trigger-btn';
        toggleBtn.innerText = '📌 Spotfix Mode: OFF';
        body.appendChild(toggleBtn);

        // 2. Build Modal Overlay Container Structure
        const modal = document.createElement('div');
        modal.id = 'spotfix-form-modal';
        modal.style.display = 'none';
        modal.innerHTML = `
          <div class="spotfix-modal-inner">
            <h3>Submit Spot Request</h3>
            <p id="spotfix-context-preview"></p>
            <textarea id="spotfix-notes-input" placeholder="What requires fixing or attention?"></textarea>
            <div class="spotfix-actions">
              <button id="spotfix-save">Submit Spot</button>
              <button id="spotfix-cancel">Cancel</button>
            </div>
          </div>
        `;
        body.appendChild(modal);

        let isModeActive = false;
        let activePayload = { url: window.location.href, css_selector: '', selected_text: '' };

        toggleBtn.addEventListener('click', () => {
          isModeActive = !isModeActive;
          toggleBtn.innerText = isModeActive ? '📌 Spotfix Mode: ACTIVE' : '📌 Spotfix Mode: OFF';
          body.style.cursor = isModeActive ? 'crosshair' : 'default';
        });

        // Helper: Formulates exact unique DOM tree string path
        function getCssSelector(el) {
          if (!(el instanceof Element)) return '';
          let path = [];
          while (el.nodeType === Node.ELEMENT_NODE) {
            let selector = el.nodeName.toLowerCase();
            if (el.id) {
              selector += '#' + el.id;
              path.unshift(selector);
              break;
            } else {
              let sibling = el, nth = 1;
              while (sibling = sibling.previousElementSibling) {
                if (sibling.nodeName.toLowerCase() == selector) nth++;
              }
              if (nth != 1) selector += `:nth-of-type(${nth})`;
            }
            path.unshift(selector);
            el = el.parentNode;
          }
          return path.join(' > ');
        }

        // Listen for context targets when mode toggle is hot
        document.addEventListener('mouseup', (e) => {
          if (!isModeActive || e.target.closest('#spotfix-form-modal') || e.target.id === 'spotfix-trigger-btn') return;

          const selectedText = window.getSelection().toString().trim();
          activePayload.css_selector = getCssSelector(e.target);
          activePayload.selected_text = selectedText;

          document.getElementById('spotfix-context-preview').innerText = selectedText 
            ? `Selected Context: "${selectedText}"` 
            : `Target Element: ${activePayload.css_selector.split(' > ').pop()}`;

          modal.style.display = 'block';
          document.getElementById('spotfix-notes-input').focus();
        });

        document.getElementById('spotfix-cancel').addEventListener('click', () => {
          modal.style.display = 'none';
          document.getElementById('spotfix-notes-input').value = '';
        });

        document.getElementById('spotfix-save').addEventListener('click', () => {
          const notes = document.getElementById('spotfix-notes-input').value.trim();
          if (!notes) return alert('Notes cannot be blank.');

          activePayload.notes = notes;

          fetch('/api/spotfix/submit', {
            method: 'POST',
            headers: { 'Content-Type': 'application/json' },
            body: JSON.stringify(activePayload)
          })
          .then(res => {
            if(res.ok) {
              alert('Spot submitted successfully!');
              modal.style.display = 'none';
              document.getElementById('spotfix-notes-input').value = '';
            }
          });
        });
      });
    }
  };
})(Drupal, once);

(function (Drupal, once) {
  'use strict';

  Drupal.behaviors.spotfixWidget = {
    attach: function (context) {
      once('spotfix-init', 'body', context).forEach(function (body) {
        
        // 1. Build and Inject Activation Controls
        const toggleBtn = document.createElement('button');
        toggleBtn.id = 'spotfix-trigger-btn';
        toggleBtn.innerText = '📌 Spotfix Mode: OFF';
        body.appendChild(toggleBtn);

        // 2. Build Modal Overlay Container Structure
        const modal = document.createElement('div');
        modal.id = 'spotfix-form-modal';
        modal.style.display = 'none';
        modal.innerHTML = `
          <div class="spotfix-modal-inner">
            <h3>Submit Spot Request</h3>
            <p id="spotfix-context-preview"></p>
            <textarea id="spotfix-notes-input" placeholder="What requires fixing or attention?"></textarea>
            <div class="spotfix-actions">
              <button id="spotfix-save">Submit Spot</button>
              <button id="spotfix-cancel">Cancel</button>
            </div>
          </div>
        `;
        body.appendChild(modal);

        let isModeActive = false;
        let activePayload = { url: window.location.href, css_selector: '', selected_text: '' };

        toggleBtn.addEventListener('click', () => {
          isModeActive = !isModeActive;
          toggleBtn.innerText = isModeActive ? '📌 Spotfix Mode: ACTIVE' : '📌 Spotfix Mode: OFF';
          body.style.cursor = isModeActive ? 'crosshair' : 'default';
        });

        // Helper: Formulates exact unique DOM tree string path
        function getCssSelector(el) {
          if (!(el instanceof Element)) return '';
          let path = [];
          while (el.nodeType === Node.ELEMENT_NODE) {
            let selector = el.nodeName.toLowerCase();
            if (el.id) {
              selector += '#' + el.id;
              path.unshift(selector);
              break;
            } else {
              let sibling = el, nth = 1;
              while (sibling = sibling.previousElementSibling) {
                if (sibling.nodeName.toLowerCase() == selector) nth++;
              }
              if (nth != 1) selector += `:nth-of-type(${nth})`;
            }
            path.unshift(selector);
            el = el.parentNode;
          }
          return path.join(' > ');
        }

        // Listen for context targets when mode toggle is hot
        document.addEventListener('mouseup', (e) => {
          if (!isModeActive || e.target.closest('#spotfix-form-modal') || e.target.id === 'spotfix-trigger-btn') return;

          const selectedText = window.getSelection().toString().trim();
          activePayload.css_selector = getCssSelector(e.target);
          activePayload.selected_text = selectedText;

          document.getElementById('spotfix-context-preview').innerText = selectedText 
            ? `Selected Context: "${selectedText}"` 
            : `Target Element: ${activePayload.css_selector.split(' > ').pop()}`;

          modal.style.display = 'block';
          document.getElementById('spotfix-notes-input').focus();
        });

        document.getElementById('spotfix-cancel').addEventListener('click', () => {
          modal.style.display = 'none';
          document.getElementById('spotfix-notes-input').value = '';
        });

        document.getElementById('spotfix-save').addEventListener('click', () => {
          const notes = document.getElementById('spotfix-notes-input').value.trim();
          if (!notes) return alert('Notes cannot be blank.');

          activePayload.notes = notes;

          fetch('/api/spotfix/submit', {
            method: 'POST',
            headers: { 'Content-Type': 'application/json' },
            body: JSON.stringify(activePayload)
          })
          .then(res => {
            if(res.ok) {
              alert('Spot submitted successfully!');
              modal.style.display = 'none';
              document.getElementById('spotfix-notes-input').value = '';
            }
          });
        });
      });
    }
  };
})(Drupal, once);

css/spotfix.css

Provides layout styling for the button toggle tool and input wrapper.

#spotfix-trigger-btn {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 999999;
  background: #0071bc;
  color: #fff;
  border: none;
  padding: 10px 15px;
  font-weight: bold;
  border-radius: 4px;
  cursor: pointer;
  box-shadow: 0 4px 6px rgba(0,0,0,0.15);
}

#spotfix-form-modal {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: #fff;
  border: 2px solid #0071bc;
  box-shadow: 0 10px 25px rgba(0,0,0,0.3);
  z-index: 9999999;
  width: 380px;
  border-radius: 6px;
}

.spotfix-modal-inner {
  padding: 20px;
  font-family: sans-serif;
}

.spotfix-modal-inner h3 { margin-top: 0; color: #333; }
#spotfix-context-preview { font-size: 12px; color: #666; background: #eee; padding: 6px; border-left: 3px solid #0071bc; max-height: 60px; overflow-y: auto;}
#spotfix-notes-input { width: 100%; height: 80px; margin: 10px 0; border: 1px solid #ccc; border-radius: 4px; padding: 5px; box-sizing: border-box; }
.spotfix-actions { text-align: right; }
.spotfix-actions button { padding: 6px 12px; margin-left: 5px; border-radius: 4px; border: none; cursor: pointer; }
#spotfix-save { background: #0071bc; color: #fff; }
#spotfix-cancel { background: #ddd; color: #333; }

#spotfix-trigger-btn {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 999999;
  background: #0071bc;
  color: #fff;
  border: none;
  padding: 10px 15px;
  font-weight: bold;
  border-radius: 4px;
  cursor: pointer;
  box-shadow: 0 4px 6px rgba(0,0,0,0.15);
}

#spotfix-form-modal {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: #fff;
  border: 2px solid #0071bc;
  box-shadow: 0 10px 25px rgba(0,0,0,0.3);
  z-index: 9999999;
  width: 380px;
  border-radius: 6px;
}

.spotfix-modal-inner {
  padding: 20px;
  font-family: sans-serif;
}

.spotfix-modal-inner h3 { margin-top: 0; color: #333; }
#spotfix-context-preview { font-size: 12px; color: #666; background: #eee; padding: 6px; border-left: 3px solid #0071bc; max-height: 60px; overflow-y: auto;}
#spotfix-notes-input { width: 100%; height: 80px; margin: 10px 0; border: 1px solid #ccc; border-radius: 4px; padding: 5px; box-sizing: border-box; }
.spotfix-actions { text-align: right; }
.spotfix-actions button { padding: 6px 12px; margin-left: 5px; border-radius: 4px; border: none; cursor: pointer; }
#spotfix-save { background: #0071bc; color: #fff; }
#spotfix-cancel { background: #ddd; color: #333; }

🚀 How to Enable and Use Your Module

1. Save all files to your project layout at /modules/custom/spotfix.

2. Run drush en spotfix -y to activate the custom schemas and paths inside your Drupal instance.

3. Navigate to /admin/people/permissions and allocate the permissions:

   • Assign Submit page annotations and feedback to trusted user groups, clients, or internal content designers.

   • Assign Administer feedback and spots to your developer or site maintainer roles.

4. Open the frontend. Click Spotfix Mode: OFF to flip it to ACTIVE. Highlight any text or click elements to seamlessly open the injection tray.

5. Review all incoming reports via your master collection sheet located at your administrative workspace route: /admin/content/spots.

It worked perfectly, but I asked Gemini to put a link to this in the reports menu:

Yes, in Drupal 11 you can easily hook into any existing administrative menu by creating a menu links configuration file.

To place your Spotfix Workspace inside the standard Reports menu section, add a new file named spotfix.links.menu.yml to the root folder of your module directory.

📄 Create spotfix.links.menu.yml

Save this file at modules/custom/spotfix/spotfix.links.menu.yml:

spotfix.admin_report_menu:
 title: 'Spotfix Workspace'
 description: 'View and manage in-context website feedback and annotations.'
 route_name: spotfix.admin_report
 parent: system.system_reports_list
 weight: 20

🔍 How This Works:

• route_name: References the exact routing identifier (spotfix.admin_report) we defined earlier in your spotfix.routing.yml file.

• parent: Setting this to system.system_reports_list instructs Drupal's menu subsystem to nest this link directly inside the core Reports box container alongside options like "Recent log messages" and "Status report".

• weight: Controls the ordering. A higher number moves it further down the list.

🔄 Apply the Configuration

Because Drupal aggressively caches the administrative menu tree, the link will not show up until the routing system updates. Run this command in your server terminal to flush the registry:  drush cr

But the menu did not appear. Gemini responded:

The reason the link isn't showing up is because of a typo in the parent: key name.

In Drupal 11 core, the official system machine name for the Reports menu container is system.admin_reports (not system.system_reports_list). Because the parent name didn't match an actual item in Drupal's internal skeleton map, the menu subsystem completely orphaned the link and hid it.

Follow these quick troubleshooting checkpoints to bring it onto the page:

🛠️ Check 1: Fix the Parent Key

Open your spotfix.links.menu.yml file and update the parent: line to match core exactly:

spotfix.admin_report_menu:
  title: 'Spotfix Workspace'
  description: 'View and manage in-context website feedback and annotations.'
  route_name: spotfix.admin_report
  parent: system.admin_reports
  weight: 20

One issue using Gemini is that often it will give instructions that apply to older versions of the software. The fix for this is to tell Gemini to remember:

Remember to assume that I am always using the latest software versions of everything.

Gemini then made suggestions:

Fantastic! I'm glad that brought the link right into place. Now that your parent identifier points to system.admin_reports, Drupal knows exactly how to hook your Spotfix Workspace right into the standard Reports index.

Your native on-page feedback loop is fully operational. Whenever you or your clients activate the tool on the frontend, highlight elements, and type notes, those records will pull directly into that backend report screen.

Let me know if you want to expand the tool later (like adding email notifications when a new "Spot" is submitted or attaching screenshot uploads to the entity data). Happy building with Drupal 11!

Both would be nice additions.

Expanding your Spotfix Annotator module to support both binary file uploads (for screenshots or image attachments) and automated email alerts changes the architecture from a simple data logger into a robust production-ready feedback pipeline.

To handle files seamlessly alongside text variables, we will transition the frontend API transport layer from flat JSON strings to standard browser FormData.

Here is how to update your module step-by-step for Drupal 11:

💾 Step 1: Update the Data Model (Entity Definition)

Open your src/Entity/SpotSubmission.php file and inject a new file reference schema definition field to map and bind your uploaded files directly onto the submission lifecycle.

Add this new field configuration definition into the baseFieldDefinitions() array just above your return statement:

// Append this field inside baseFieldDefinitions()
    $fields['screenshot'] = BaseFieldDefinition::create('file')
      ->setLabel(t('Screenshot Attachment'))
      ->setSetting('target_type', 'file')
      ->setSetting('file_extensions', 'png jpg jpeg')
      ->setSetting('max_filesize', '5MB')
      ->setDisplayOptions('view', [
        'type' => 'file_default',
        'weight' => 10,
      ]);

⚙️ Step 2: Handle File Storage & Mail Triggers inside the Controller

Overwrite src/Controller/SpotfixApiController.php to process binary form files using the native Drupal file.repository management engine, persist the incoming entry, and fire off a system mail payload.

<?php

namespace Drupal\spotfix\Controller;

use Drupal\Core\Controller\ControllerBase;
use Symfony\Component\HttpFoundation\JsonResponse;
use Symfony\Component\HttpFoundation\Request;
use Drupal\spotfix\Entity\SpotSubmission;
use Drupal\Core\Url;

class SpotfixApiController extends ControllerBase {

  public function submit(Request $request): JsonResponse {
    // Collect both values and files using the Request object
    $notes = $request->request->get('notes');
    $url = $request->request->get('url');
    $css_selector = $request->request->get('css_selector');
    $selected_text = $request->request->get('selected_text');
    $uploaded_file = $request->files->get('screenshot');

    if (empty($notes) || empty($url) || empty($css_selector)) {
      return new JsonResponse(['error' => 'Missing essential payload fields.'], 400);
    }

    $spot_data = [
      'url' => $url,
      'css_selector' => $css_selector,
      'selected_text' => $selected_text ?? '',
      'notes' => $notes,
      'status' => 'open',
    ];

    // Process and sanitize file uploads safely if a screenshot was attached
    if ($uploaded_file && $uploaded_file->isValid()) {
      try {
        /** @var \Drupal\file\FileRepositoryInterface $file_repository */
        $file_repository = \Drupal::service('file.repository');
        
        // Save the file into Drupal's protected private or public cloud repository directories
        $file_entity = $file_repository->writeData(
          file_get_contents($uploaded_file->getRealPath()),
          'public://spotfix-' . time() . '-' . $uploaded_file->getClientOriginalName(),
          \Drupal\Core\File\FileSystemInterface::EXISTS_RENAME
        );

        if ($file_entity) {
          $file_entity->setPermanent();
          $file_entity->save();
          $spot_data['screenshot'] = $file_entity->id();
        }
      } catch (\Exception $e) {
        \Drupal::logger('spotfix')->error('Failed to log incoming file capture: ' . $e->getMessage());
      }
    }

    $spot = SpotSubmission::create($spot_data);
    $spot->save();

    // Trigger System Mail Engine notification dispatch loop
    $this->sendNotificationEmail($spot);

    return new JsonResponse([
      'message' => 'Spot logged and notification dispatched successfully!',
      'id' => $spot->id()
    ], 200);
  }

  protected function sendNotificationEmail(SpotSubmission $spot) {
    $mail_manager = \Drupal::service('plugin.manager.mail');
    $module = 'spotfix';
    $key = 'new_spot_alert';
    
    // Sends directly to the system site email address. Swap this string out for custom emails.
    $to = \Drupal::config('system.site')->get('mail');
    
    $params['spot_id'] = $spot->id();
    $params['notes'] = $spot->get('notes')->value;
    $params['url'] = $spot->get('url')->value;
    
    $langcode = \Drupal::languageManager()->getDefaultLanguage()->getId();
    
    $mail_manager->mail($module, $key, $to, $langcode, $params, NULL, TRUE);
  }

  public function adminDashboard(): array {
    $storage = $this->entityTypeManager()->getStorage('spot_submission');
    $ids = $storage->getQuery()->sort('created', 'DESC')->accessCheck(FALSE)->execute();
    $spots = $storage->loadMultiple($ids);

    $header = [t('ID'), t('Date'), t('Target Page'), t('Feedback Notes'), t('Attachment'), t('Status')];
    $rows = [];

    foreach ($spots as $spot) {
      $file_cell = t('None');
      if (!$spot->get('screenshot')->isEmpty()) {
        /** @var \Drupal\file\FileInterface $file */
        $file = $spot->get('screenshot')->entity;
        if ($file) {
          $file_cell = [
            'data' => [
              '#type' => 'link',
              '#title' => t('View File'),
              '#url' => Url::fromUri(\Drupal::service('file_url_generator')->generateAbsoluteString($file->getFileUri())),
              '#attributes' => ['target' => '_blank'],
            ]
          ];
        }
      }

      $rows[] = [
        $spot->id(),
        \Drupal::service('date.formatter')->format($spot->get('created')->value, 'short'),
        [
          'data' => [
            '#type' => 'link',
            '#title' => t('View Page'),
            '#url' => Url::fromUri($spot->get('url')->value),
          ]
        ],
        $spot->get('notes')->value,
        $file_cell,
        $spot->get('status')->value,
      ];
    }

    return [
      '#type' => 'table',
      '#header' => $header,
      '#rows' => $rows,
      '#empty' => t('No feedback records captured yet.'),
    ];
  }
}

✉️ Step 3: Implement the Email Layout Hooks

Open your main spotfix.module file and append the hook_mail() function logic to construct and format your automated notification emails cleanly.

<?php

/**
 * Implements hook_page_attachments().
 */
function spotfix_page_attachments(array &$attachments) {
  if (\Drupal::currentUser()->hasPermission('submit spots')) {
    $attachments['#attached']['library'][] = 'spotfix/widget';
  }
}

/**
 * Implements hook_mail().
 */
function spotfix_mail($key, &$message, $params) {
  switch ($key) {
    case 'new_spot_alert':
      $message['from'] = \Drupal::config('system.site')->get('mail');
      $message['subject'] = t('[Spotfix Alert] New Website Bug/Feedback Report #@id', ['@id' => $params['spot_id']]);
      
      $body = [];
      $body[] = t('A new site annotation has been logged.');
      $body[] = t('Page Location: @url', ['@url' => $params['url']]);
      $body[] = t('Notes from Reporter:');
      $body[] = $params['notes'];
      $body[] = t('Review the workspace at: @workspace', [
        '@workspace' => \Drupal\Core\Url::fromRoute('spotfix.admin_report', [], ['absolute' => TRUE])->toString()
      ]);

      $message['body'] = array_map('htmlentities', $body);
      break;
  }
}

🎨 Step 4: Add File Attachments to the JavaScript Frontend

Open js/spotfix.js and alter the template layout string to render a custom native file selection input wrapper. This shifts the internal transmission schema to construct standard FormData blobs dynamically.

(function (Drupal, once) {
  'use strict';

  Drupal.behaviors.spotfixWidget = {
    attach: function (context) {
      once('spotfix-init', 'body', context).forEach(function (body) {
        
        const toggleBtn = document.createElement('button');
        toggleBtn.id = 'spotfix-trigger-btn';
        toggleBtn.innerText = '📌 Spotfix Mode: OFF';
        body.appendChild(toggleBtn);

        const modal = document.createElement('div');
        modal.id = 'spotfix-form-modal';
        modal.style.display = 'none';
        modal.innerHTML = `
          <div class="spotfix-modal-inner">
            <h3>Submit Spot Request</h3>
            <p id="spotfix-context-preview"></p>
            <textarea id="spotfix-notes-input" placeholder="What requires fixing or attention?"></textarea>
            
            <label style="font-size:12px; font-weight:bold; color:#444; display:block; margin:5px 0;">Attach Screenshot/Image File:</label>
            <input type="file" id="spotfix-screenshot-file" accept="image/*" style="font-size:12px; margin-bottom:15px; width:100%;">
            
            <div class="spotfix-actions">
              <button id="spotfix-save">Submit Spot</button>
              <button id="spotfix-cancel">Cancel</button>
            </div>
          </div>
        `;
        body.appendChild(modal);

        let isModeActive = false;
        let activePayload = { url: window.location.href, css_selector: '', selected_text: '' };

        toggleBtn.addEventListener('click', () => {
          isModeActive = !isModeActive;
          toggleBtn.innerText = isModeActive ? '📌 Spotfix Mode: ACTIVE' : '📌 Spotfix Mode: OFF';
          body.style.cursor = isModeActive ? 'crosshair' : 'default';
        });

        function getCssSelector(el) {
          if (!(el instanceof Element)) return '';
          let path = [];
          while (el.nodeType === Node.ELEMENT_NODE) {
            let selector = el.nodeName.toLowerCase();
            if (el.id) {
              selector += '#' + el.id;
              path.unshift(selector);
              break;
            } else {
              let sibling = el, nth = 1;
              while (sibling = sibling.previousElementSibling) {
                if (sibling.nodeName.toLowerCase() == selector) nth++;
              }
              if (nth != 1) selector += `:nth-of-type(${nth})`;
            }
            path.unshift(selector);
            el = el.parentNode;
          }
          return path.join(' > ');
        }

        document.addEventListener('mouseup', (e) => {
          if (!isModeActive || e.target.closest('#spotfix-form-modal') || e.target.id === 'spotfix-trigger-btn') return;

          const selectedText = window.getSelection().toString().trim();
          activePayload.css_selector = getCssSelector(e.target);
          activePayload.selected_text = selectedText;

          document.getElementById('spotfix-context-preview').innerText = selectedText 
            ? `Selected Context: "${selectedText}"` 
            : `Target Element: ${activePayload.css_selector.split(' > ').pop()}`;

          modal.style.display = 'block';
          document.getElementById('spotfix-notes-input').focus();
        });

        document.getElementById('spotfix-cancel').addEventListener('click', () => {
          modal.style.display = 'none';
          document.getElementById('spotfix-notes-input').value = '';
          document.getElementById('spotfix-screenshot-file').value = '';
        });

        document.getElementById('spotfix-save').addEventListener('click', () => {
          const notes = document.getElementById('spotfix-notes-input').value.trim();
          if (!notes) return alert('Notes cannot be blank.');

          // 🛠️ RE-ENGINEERED: Transform JSON configuration payload to formal multipart binary FormData 
          const formData = new FormData();
          formData.append('url', activePayload.url);
          formData.append('css_selector', activePayload.css_selector);
          formData.append('selected_text', activePayload.selected_text);
          formData.append('notes', notes);

          const fileInput = document.getElementById('spotfix-screenshot-file');
          if (fileInput.files.length > 0) {
            formData.append('screenshot', fileInput.files[0]);
          }

          fetch('/api/spotfix/submit', {
            method: 'POST',
            body: formData  // Automatically sets multipart/form-data boundary definitions
          })
          .then(res => {
            if (res.ok) {
              alert('Spot submitted successfully with email notifications sent!');
              modal.style.display = 'none';
              document.getElementById('spotfix-notes-input').value = '';
              fileInput.value = '';
            }
          });
        });
      });
    }
  };
})(Drupal, once);

I had just one test spot in my database, so I purged it:

🛠️ The Cleanup Sequence

1. Purge the existing test records from Drupal's registry

Run this single-line PHP evaluator to instantly delete all spot_submission rows:

dr php:eval '$s = \Drupal::entityTypeManager()->getStorage("spot_submission"); $ids = $s->getQuery()->accessCheck(FALSE)->execute(); if (!empty($ids)) { $s->delete($s->loadMultiple($ids)); print "Purged " . count($ids) . " spots.\n"; }'

2. Uninstall the module now that the table is empty

drush pmu spotfix -y

3. Re-enable the module to compile your updated layout schema

drush en spotfix -y
drush cr

What does this module do?

If you are logged in as Administrator or an allowed role such as Board Member, every Web page will display a blue button at the bottom right:

If you click on the button, the Spotfix module turns On, and the mouse cursor will select anything on the current page as an issue to be fixed.

It gets submitted:

and the resulting submission is available in the Spotfix Workspace:
 

dr php:eval "$s = \Drupal::entityTypeManager()->getStorage('spot_submission'); $ids = $s->getQuery()->accessCheck(FALSE)->execute(); if (!empty($ids)) { $s->delete($s->loadMultiple($ids)); print 'Purged ' . count($ids) . ' spots.'; }"

spotfix/
├── spotfix.info.yml
├── spotfix.libraries.yml
├── spotfix.routing.yml
├── spotfix.permissions.yml
├── spotfix.module
├── css/
│   └── spotfix.css
├── js/
│   └── spotfix.js
└── src/
    ├── Entity/
    │   └── SpotSubmission.php
    └── Controller/
        └── SpotfixApiController.php

name: 'Spotfix Annotator'
type: module
description: 'In-context on-page website feedback, bug reporting, and annotation tool.'
package: Custom
core_version_requirement: ^11
dependencies:
  - drupal:file
  - drupal:user

widget:
  version: 1.0
  css:
    theme:
      css/spotfix.css: {}
  js:
    js/spotfix.js: {}
  dependencies:
    - core/drupal
    - core/once
    - core/drupalSettings

submit spots:
  title: 'Submit page annotations and feedback'
  description: 'Allows users to see the overlay widget and drop annotations on the DOM.'
administer spots:
  title: 'Administer feedback and spots'
  description: 'Access the backend report workspace to assign and mark entries resolved.'

spotfix.api.submit:
  path: '/api/spotfix/submit'
  defaults:
    _controller: '\Drupal\spotfix\Controller\SpotfixApiController::submit'
  requirements:
    _permission: 'submit spots'
    _method: 'POST'

spotfix.admin_report:
  path: '/admin/content/spots'
  defaults:
    _controller: '\Drupal\spotfix\Controller\SpotfixApiController::adminDashboard'
    _title: 'Spotfix Workspace'
  requirements:
    _permission: 'administer spots'

<?php

namespace Drupal\spotfix\Entity;

use Drupal\Core\Entity\ContentEntityBase;
use Drupal\Core\Entity\EntityTypeInterface;
use Drupal\Core\Field\BaseFieldDefinition;

/**
 * Defines the Spot Submission entity.
 *
 * @ContentEntityType(
 * id = "spot_submission",
 * label = @Translation("Spot Submission"),
 * base_table = "spot_submission",
 * entity_keys = {
 * "id" = "id",
 * "uuid" = "uuid",
 * },
 * )
 */
class SpotSubmission extends ContentEntityBase {

  public static function baseFieldDefinitions(EntityTypeInterface $entity_type) {
    $fields = parent::baseFieldDefinitions($entity_type);

    $fields['url'] = BaseFieldDefinition::create('string')
      ->setLabel(t('Page URL'))
      ->setRequired(TRUE);

    $fields['css_selector'] = BaseFieldDefinition::create('string')
      ->setLabel(t('CSS Selector Path'))
      ->setRequired(TRUE);

    $fields['selected_text'] = BaseFieldDefinition::create('text_long')
      ->setLabel(t('Highlighted Selection Text'));

    $fields['notes'] = BaseFieldDefinition::create('text_long')
      ->setLabel(t('Feedback Notes'))
      ->setRequired(TRUE);

    $fields['status'] = BaseFieldDefinition::create('list_string')
      ->setLabel(t('Status'))
      ->setDefaultValue('open')
      ->setSettings([
        'allowed_values' => [
          'open' => 'Open',
          'progress' => 'In Progress',
          'resolved' => 'Resolved',
        ],
      ]);

    $fields['uid'] = BaseFieldDefinition::create('entity_reference')
      ->setLabel(t('Reporter'))
      ->setSetting('target_type', 'user')
      ->setDefaultValue(\Drupal::currentUser()->id());

    $fields['created'] = BaseFieldDefinition::create('created')
      ->setLabel(t('Created Timestamp'));

    return $fields;
  }
}

<?php

namespace Drupal\spotfix\Controller;

use Drupal\Core\Controller\ControllerBase;
use Symfony\Component\HttpFoundation\JsonResponse;
use Symfony\Component\HttpFoundation\Request;
use Drupal\spotfix\Entity\SpotSubmission;

class SpotfixApiController extends ControllerBase {

  public function submit(Request $request): JsonResponse {
    $data = json_decode($request->getContent(), TRUE);

    if (empty($data['notes']) || empty($data['url']) || empty($data['css_selector'])) {
      return new JsonResponse(['error' => 'Missing essential payload fields.'], 400);
    }

    $spot = SpotSubmission::create([
      'url' => $data['url'],
      'css_selector' => $data['css_selector'],
      'selected_text' => $data['selected_text'] ?? '',
      'notes' => $data['notes'],
      'status' => 'open',
    ]);
    $spot->save();

    return new JsonResponse([
      'message' => 'Spot logged successfully!',
      'id' => $spot->id()
    ], 200);
  }

  public function adminDashboard(): array {
    $storage = $this->entityTypeManager()->getStorage('spot_submission');
    $ids = $storage->getQuery()->sort('created', 'DESC')->accessCheck(FALSE)->execute();
    $spots = $storage->loadMultiple($ids);

    $header = [t('ID'), t('Date'), t('Target Page'), t('Selected Context'), t('Feedback Notes'), t('Status')];
    $rows = [];

    foreach ($spots as $spot) {
      $rows[] = [
        $spot->id(),
        \Drupal::service('date.formatter')->format($spot->get('created')->value, 'short'),
        [
          'data' => [
            '#type' => 'link',
            '#title' => t('View Page'),
            '#url' => \Drupal\Core\Url::fromUri($spot->get('url')->value),
          ]
        ],
        $spot->get('selected_text')->value ?: 'N/A (Direct Click)',
        $spot->get('notes')->value,
        $spot->get('status')->value,
      ];
    }

    return [
      '#type' => 'table',
      '#header' => $header,
      '#rows' => $rows,
      '#empty' => t('No feedback records captured yet.'),
    ];
  }
}

<?php

/**
 * Implements hook_page_attachments().
 */
function spotfix_page_attachments(array &$attachments) {
  if (\Drupal::currentUser()->hasPermission('submit spots')) {
    $attachments['#attached']['library'][] = 'spotfix/widget';
  }
}

(function (Drupal, once) {
  'use strict';

  Drupal.behaviors.spotfixWidget = {
    attach: function (context) {
      once('spotfix-init', 'body', context).forEach(function (body) {
        
        // 1. Build and Inject Activation Controls
        const toggleBtn = document.createElement('button');
        toggleBtn.id = 'spotfix-trigger-btn';
        toggleBtn.innerText = '📌 Spotfix Mode: OFF';
        body.appendChild(toggleBtn);

        // 2. Build Modal Overlay Container Structure
        const modal = document.createElement('div');
        modal.id = 'spotfix-form-modal';
        modal.style.display = 'none';
        modal.innerHTML = `
          <div class="spotfix-modal-inner">
            <h3>Submit Spot Request</h3>
            <p id="spotfix-context-preview"></p>
            <textarea id="spotfix-notes-input" placeholder="What requires fixing or attention?"></textarea>
            <div class="spotfix-actions">
              <button id="spotfix-save">Submit Spot</button>
              <button id="spotfix-cancel">Cancel</button>
            </div>
          </div>
        `;
        body.appendChild(modal);

        let isModeActive = false;
        let activePayload = { url: window.location.href, css_selector: '', selected_text: '' };

        toggleBtn.addEventListener('click', () => {
          isModeActive = !isModeActive;
          toggleBtn.innerText = isModeActive ? '📌 Spotfix Mode: ACTIVE' : '📌 Spotfix Mode: OFF';
          body.style.cursor = isModeActive ? 'crosshair' : 'default';
        });

        // Helper: Formulates exact unique DOM tree string path
        function getCssSelector(el) {
          if (!(el instanceof Element)) return '';
          let path = [];
          while (el.nodeType === Node.ELEMENT_NODE) {
            let selector = el.nodeName.toLowerCase();
            if (el.id) {
              selector += '#' + el.id;
              path.unshift(selector);
              break;
            } else {
              let sibling = el, nth = 1;
              while (sibling = sibling.previousElementSibling) {
                if (sibling.nodeName.toLowerCase() == selector) nth++;
              }
              if (nth != 1) selector += `:nth-of-type(${nth})`;
            }
            path.unshift(selector);
            el = el.parentNode;
          }
          return path.join(' > ');
        }

        // Listen for context targets when mode toggle is hot
        document.addEventListener('mouseup', (e) => {
          if (!isModeActive || e.target.closest('#spotfix-form-modal') || e.target.id === 'spotfix-trigger-btn') return;

          const selectedText = window.getSelection().toString().trim();
          activePayload.css_selector = getCssSelector(e.target);
          activePayload.selected_text = selectedText;

          document.getElementById('spotfix-context-preview').innerText = selectedText 
            ? `Selected Context: "${selectedText}"` 
            : `Target Element: ${activePayload.css_selector.split(' > ').pop()}`;

          modal.style.display = 'block';
          document.getElementById('spotfix-notes-input').focus();
        });

        document.getElementById('spotfix-cancel').addEventListener('click', () => {
          modal.style.display = 'none';
          document.getElementById('spotfix-notes-input').value = '';
        });

        document.getElementById('spotfix-save').addEventListener('click', () => {
          const notes = document.getElementById('spotfix-notes-input').value.trim();
          if (!notes) return alert('Notes cannot be blank.');

          activePayload.notes = notes;

          fetch('/api/spotfix/submit', {
            method: 'POST',
            headers: { 'Content-Type': 'application/json' },
            body: JSON.stringify(activePayload)
          })
          .then(res => {
            if(res.ok) {
              alert('Spot submitted successfully!');
              modal.style.display = 'none';
              document.getElementById('spotfix-notes-input').value = '';
            }
          });
        });
      });
    }
  };
})(Drupal, once);

#spotfix-trigger-btn {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 999999;
  background: #0071bc;
  color: #fff;
  border: none;
  padding: 10px 15px;
  font-weight: bold;
  border-radius: 4px;
  cursor: pointer;
  box-shadow: 0 4px 6px rgba(0,0,0,0.15);
}

#spotfix-form-modal {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: #fff;
  border: 2px solid #0071bc;
  box-shadow: 0 10px 25px rgba(0,0,0,0.3);
  z-index: 9999999;
  width: 380px;
  border-radius: 6px;
}

.spotfix-modal-inner {
  padding: 20px;
  font-family: sans-serif;
}

.spotfix-modal-inner h3 { margin-top: 0; color: #333; }
#spotfix-context-preview { font-size: 12px; color: #666; background: #eee; padding: 6px; border-left: 3px solid #0071bc; max-height: 60px; overflow-y: auto;}
#spotfix-notes-input { width: 100%; height: 80px; margin: 10px 0; border: 1px solid #ccc; border-radius: 4px; padding: 5px; box-sizing: border-box; }
.spotfix-actions { text-align: right; }
.spotfix-actions button { padding: 6px 12px; margin-left: 5px; border-radius: 4px; border: none; cursor: pointer; }
#spotfix-save { background: #0071bc; color: #fff; }
#spotfix-cancel { background: #ddd; color: #333; }