DX: [budget calculator] restore previous budget's element type to Charge/Resource kind

+ improve typing

src/Bundle/ChillBudgetBundle/migrations/Version20230328155010.php

@@ -0,0 +1,56 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * Chill is a software for social workers
+ *
+ * For the full copyright and license information, please view
+ * the LICENSE file that was distributed with this source code.
+ */
+
+namespace Chill\Migrations\Budget;
+
+use Doctrine\DBAL\Schema\Schema;
+use Doctrine\Migrations\AbstractMigration;
+
+final class Version20230328155010 extends AbstractMigration
+{
+    public function getDescription(): string
+    {
+        return 'budget elements: restore the previous type to resource/charge kind if applicable';
+    }
+
+    public function up(Schema $schema): void
+    {
+        $this->addSql(<<<'SQL'
+            WITH type_to_id AS (
+                SELECT DISTINCT charge.charge_id AS id, charge.type
+                FROM chill_budget.charge
+                WHERE type <> ''
+            )
+            UPDATE chill_budget.charge_type
+                SET kind = type_to_id.type
+                FROM type_to_id
+                WHERE type_to_id.type <> '' AND type_to_id.id = charge_type.id
+        SQL);
+
+        $this->addSql(<<<'SQL'
+            WITH type_to_id AS (
+                SELECT DISTINCT resource.resource_id AS id, resource.type
+                FROM chill_budget. resource
+                WHERE type <> ''
+            )
+            UPDATE chill_budget.resource_type
+                SET kind = type_to_id.type
+                FROM type_to_id
+                WHERE type_to_id.type <> '' AND type_to_id.id = resource_type.id
+        SQL);
+    }
+
+    public function down(Schema $schema): void
+    {
+        $this->addSql("UPDATE chill_budget.resource_type SET kind=md5(random()::text) WHERE kind = ''");
+        $this->addSql("UPDATE chill_budget.charge_type SET kind=md5(random()::text) WHERE kind = ''");
+    }
+}