add migration

Reviewed-on: #52

migrations/Version20250318151059.php

@@ -0,0 +1,55 @@
+<?php
+
+declare(strict_types=1);
+
+namespace DoctrineMigrations;
+
+use Doctrine\DBAL\Schema\Schema;
+use Doctrine\Migrations\AbstractMigration;
+
+/**
+ * Auto-generated Migration: Please modify to your needs!
+ */
+final class Version20250318151059 extends AbstractMigration
+{
+    public function getDescription(): string
+    {
+        return '';
+    }
+
+    public function up(Schema $schema): void
+    {
+        // First make sure customer_id is nullable
+        $this->addSql('ALTER TABLE payment ALTER COLUMN customer_id DROP NOT NULL');
+
+        // Add payment_id to customer
+        $this->addSql('ALTER TABLE customer ADD payment_id INT DEFAULT NULL');
+
+        // Migrate data
+        $this->addSql('UPDATE customer c SET payment_id = (SELECT p.id FROM payment p WHERE p.customer_id = c.id)');
+
+        // Add constraints
+        $this->addSql('ALTER TABLE customer ADD CONSTRAINT FK_81398E094C3A3BB FOREIGN KEY (payment_id) REFERENCES payment (id) NOT DEFERRABLE INITIALLY IMMEDIATE');
+        $this->addSql('CREATE UNIQUE INDEX UNIQ_81398E094C3A3BB ON customer (payment_id)');
+
+        // Remove old relationship
+        $this->addSql('ALTER TABLE payment DROP CONSTRAINT fk_6d28840d9395c3f3');
+        $this->addSql('DROP INDEX uniq_6d28840d9395c3f3');
+        $this->addSql('ALTER TABLE payment DROP customer_id');
+    }
+
+    public function down(Schema $schema): void
+    {
+        // this down() migration is auto-generated, please modify it to your needs
+        $this->addSql('CREATE SCHEMA public');
+        $this->addSql('ALTER TABLE payment ADD customer_id INT NOT NULL');
+        $this->addSql('ALTER TABLE
+          payment
+        ADD
+          CONSTRAINT fk_6d28840d9395c3f3 FOREIGN KEY (customer_id) REFERENCES customer (id) NOT DEFERRABLE INITIALLY IMMEDIATE');
+        $this->addSql('CREATE UNIQUE INDEX uniq_6d28840d9395c3f3 ON payment (customer_id)');
+        $this->addSql('ALTER TABLE customer DROP CONSTRAINT FK_81398E094C3A3BB');
+        $this->addSql('DROP INDEX UNIQ_81398E094C3A3BB');
+        $this->addSql('ALTER TABLE customer DROP payment_id');
+    }
+}