Add update script

src/ServiceProvider.php

@@ -21,6 +21,7 @@ class ServiceProvider extends AddonServiceProvider
         \Studio1902\PeakTools\Updates\UpdateFormFields::class,
         \Studio1902\PeakTools\Updates\UpdateFormErrorHandling::class,
         \Studio1902\PeakTools\Updates\UpdateButtonAttributeTags::class,
+        \Studio1902\PeakTools\Updates\UpdateImagesBlueprintWithExemptToggle::class,
     ];
 
     public function bootAddon()

src/Updates/UpdateImagesBlueprintWithExemptToggle.php

@@ -0,0 +1,56 @@
+<?php
+
+namespace Studio1902\PeakTools\Updates;
+
+use Statamic\Support\Arr;
+use Illuminate\Support\Facades\File;
+use Symfony\Component\Yaml\Yaml;
+use Statamic\UpdateScripts\UpdateScript;
+
+class UpdateImagesBlueprintWithExemptToggle extends UpdateScript
+{
+    public function shouldUpdate($newVersion, $oldVersion)
+    {
+        return $this->isUpdatingTo('4.4.0');
+    }
+
+    public function update()
+    {
+        $file = base_path("resources/blueprints/assets/images.yaml");
+
+        if (File::exists($file)) {
+            $newField = [
+                'handle' => 'exempt_from_alt',
+                'field' => [
+                    'inline_label' => "This image doesn't need an alt text.",
+                    'default' => false,
+                    'type' => 'toggle',
+                    'display' => 'Exempt',
+                    'icon' => 'toggle',
+                    'listable' => 'hidden',
+                    'instructions_position' => 'below',
+                    'visibility' => 'visible',
+                    'replicator_preview' => true,
+                    'hide_display' => false,
+                    'instructions' => "When enabled, this image won't show up in the control panel dashboard as an image that misses alt text. Images without an alt text will automatically be hidden for screen readers."
+                ]
+            ];
+
+            $blueprint = Yaml::parseFile($file);
+            $existingFields = Arr::get($blueprint, 'sections.main.fields');
+
+            if ($existingFields) {
+                $existingFields[] = $newField;
+
+                Arr::set($blueprint, 'sections.main.fields', $existingFields);
+                File::put($file, Yaml::dump($blueprint, 99, 2));
+
+                $this->console()->info('Added an exempt from alt toggle to the images blueprint in `resources/blueprints/assets/images.yaml`');
+            } else {
+                $this->console()->info("Couldn't add an exempt from alt toggle to the images blueprint in `resources/blueprints/assets/images.yaml`");
+            }
+        } else {
+            $this->console()->info('Add an `exempt_from_alt` toggle field to any asset blueprints where you want this functionality.');
+        }
+    }
+}