Dynamic Blueprints in Kirby

_index.php

<?php

use Kirby\Cms\App as Kirby;
use Kirby\Data\Data;

Kirby::plugin('adamkiss/dynamic-blueprint', [
	'hooks' => [
		'system.loadPlugins:after' => function() {
			// load base (this could be dynamic as well. Should even)
			$fakeBlueprint = Data::read(__DIR__ . '/fake-kirby-request.yml');

			// this is just a quick dirty code
			$addFields = [];
			foreach(
				site()->index()->findBy('template', 'embed1')
				->selfbuilder()->toBuilderBlocks() as $block
			) {
				$type = $block->_key()->toString();
				switch ($type) {
					case 'line':
						$addFields[$block->fieldName()->toString()] = [
							'type' => $type
						];
						break;
					case 'info':
						$addFields[$block->fieldName()->toString()] = [
							'type' => $type,
							'label' => $block->fieldLabel()->toString(),
							'text' => $block->fieldText()->toString()
						];
						break;
					case 'text': default:
						$addFields[$block->fieldName()->toString()] = [
							'type' => $type,
							'label' => $block->fieldLabel()->toString(),
							'size' => $block->fieldSize()->toString()
						];
						break;
				}
			}

			// soecific place for preview
			$fakeBlueprint['columns']['editable']['sections']['anothermain']['fields'] = $addFields;

			// live Merge blueprints because why not.
			kirby()->extensions['blueprints'] = array_merge(
				kirby()->extensions['blueprints'],
				['pages/embed1' => $fakeBlueprint]
			);
		}
	]
]);

fake-kirby-request.yaml

title: Default Page
pages: false
files: false
columns:
  editor:
    width: 1/2
    sections:
      main:
        type: fields
        fields:
          selfbuilder:
            label: Build yourself
            type: builder
            columns: 1
            fieldsets:
              textarea:
                label: Textarea
                fields:
                  fieldName:
                    width: 1/2
                    type: text
                    label: Field Name
                    size: small
                  fieldLabel:
                    width: 1/2
                    type: text
                    label: Field Label
                    size: small
                  fieldSize:
                    label: Field Size
                    type: radio
                    columns: 3
                    options:
                      small: Small
                      medium: Medium
                      large: Large
              line:
                label: Line
                fields:
                  fieldName:
                    type: text
                    label: Field Name
                    size: small
              info:
                label: Info
                fields:
                  fieldName:
                    width: 1/2
                    type: text
                    label: Field Name
                    size: small
                  fieldLabel:
                    width: 1/2
                    type: text
                    label: Field Label
                    size: small
                  fieldText:
                    type: textarea
                    label: Info Text
  editable:
    width: 1/2
    sections:
      anothermain:
        type: fields
        fields: []