<?php

declare(strict_types=1);

namespace DoctrineMigrations;

use Doctrine\DBAL\Schema\Schema;
use Doctrine\Migrations\AbstractMigration;

/**
 * TimeTracking module (2.1): add Timestampable/Blamable columns to time_entry.
 *
 * TimeEntry is the first adopter of TimestampableBlamableTrait. This migration
 * is purely additive — nullable columns + nullable FK to "user" with
 * ON DELETE SET NULL. No DROP/ALTER on existing data. Columns are lowercase
 * snake_case. Hand-written to guarantee zero destructive instruction.
 */
final class Version20260620161036 extends AbstractMigration
{
    public function getDescription(): string
    {
        return 'TimeTracking: add timestampable/blamable columns to time_entry (additive)';
    }

    public function up(Schema $schema): void
    {
        $this->addSql('ALTER TABLE time_entry ADD created_at TIMESTAMP(0) WITHOUT TIME ZONE DEFAULT NULL');
        $this->addSql('ALTER TABLE time_entry ADD updated_at TIMESTAMP(0) WITHOUT TIME ZONE DEFAULT NULL');
        $this->addSql('ALTER TABLE time_entry ADD created_by INT DEFAULT NULL');
        $this->addSql('ALTER TABLE time_entry ADD updated_by INT DEFAULT NULL');
        $this->addSql('ALTER TABLE time_entry ADD CONSTRAINT FK_6E537C0CDE12AB56 FOREIGN KEY (created_by) REFERENCES "user" (id) ON DELETE SET NULL NOT DEFERRABLE');
        $this->addSql('ALTER TABLE time_entry ADD CONSTRAINT FK_6E537C0C16FE72E1 FOREIGN KEY (updated_by) REFERENCES "user" (id) ON DELETE SET NULL NOT DEFERRABLE');
        $this->addSql('CREATE INDEX IDX_6E537C0CDE12AB56 ON time_entry (created_by)');
        $this->addSql('CREATE INDEX IDX_6E537C0C16FE72E1 ON time_entry (updated_by)');
        $this->addSql("COMMENT ON COLUMN time_entry.created_at IS 'Creation timestamp (Timestampable, set on prePersist)'");
        $this->addSql("COMMENT ON COLUMN time_entry.updated_at IS 'Last update timestamp (Timestampable, set on prePersist/preUpdate)'");
        $this->addSql("COMMENT ON COLUMN time_entry.created_by IS 'User who created the entry (Blamable, FK user.id, SET NULL on delete)'");
        $this->addSql("COMMENT ON COLUMN time_entry.updated_by IS 'User who last updated the entry (Blamable, FK user.id, SET NULL on delete)'");
    }

    public function down(Schema $schema): void
    {
        $this->addSql('ALTER TABLE time_entry DROP CONSTRAINT FK_6E537C0CDE12AB56');
        $this->addSql('ALTER TABLE time_entry DROP CONSTRAINT FK_6E537C0C16FE72E1');
        $this->addSql('DROP INDEX IDX_6E537C0CDE12AB56');
        $this->addSql('DROP INDEX IDX_6E537C0C16FE72E1');
        $this->addSql('ALTER TABLE time_entry DROP created_at');
        $this->addSql('ALTER TABLE time_entry DROP updated_at');
        $this->addSql('ALTER TABLE time_entry DROP created_by');
        $this->addSql('ALTER TABLE time_entry DROP updated_by');
    }
}