Conditioned field validation (#418)

* wip: validation condition input

* form custom validation condition

* Default message on form condition validation

* field validation condition test

* fix linting

* update tests,  add pass test

* Polish UI

---------

Co-authored-by: Julien Nahum <julien@nahum.net>

app/Rules/CustomFieldValidationRule.php

@@ -0,0 +1,40 @@
+<?php
+
+namespace App\Rules;
+
+use App\Service\Forms\FormLogicConditionChecker;
+use Illuminate\Contracts\Validation\Rule;
+
+class CustomFieldValidationRule implements Rule
+{
+    /**
+     * Create a new rule instance.
+     *
+     * @return void
+     */
+    public function __construct(public array $validation, public array $formData)
+    {
+    }
+
+    /**
+     * Determine if the validation rule passes.
+     *
+     * @param  string  $attribute
+     * @param  mixed  $value
+     * @return bool
+     */
+    public function passes($attribute, $value)
+    {
+        return FormLogicConditionChecker::conditionsMet($this->validation['error_conditions']['conditions'], $this->formData);
+    }
+
+    /**
+     * Get the validation error message.
+     *
+     * @return string
+     */
+    public function message()
+    {
+        return isset($this->validation['error_message']) ? $this->validation['error_message'] : 'Invalid input';
+    }
+}