import { PrismaClient } from '@prisma/client';

/** True when database-backed tests can run (see vitest.global-setup.ts). */
export const hasTestDb = Boolean(process.env.TEST_DATABASE_URL);

/** Prisma client bound to the test database. Callers own the lifecycle. */
export function createTestPrisma(): PrismaClient {
  if (!process.env.TEST_DATABASE_URL) {
    throw new Error('TEST_DATABASE_URL is not set — guard the suite with hasTestDb');
  }
  return new PrismaClient({ datasourceUrl: process.env.TEST_DATABASE_URL });
}

/** Unique suffix so suites never collide on unique columns. */
export function uniqueSuffix(): string {
  return Math.random().toString(36).slice(2, 10);
}

/**
 * The owner's Pond Admin grant for a pond created directly through Prisma.
 * Production paths create it with the pond (PondsService, issue #52);
 * fixtures that bypass the service need it too, or the owner cannot see
 * their own pond under the grant-based resolution.
 */
export async function grantOwnerAdmin(
  prisma: PrismaClient,
  pondId: string,
  ownerId: string,
): Promise<void> {
  await prisma.roleGrant.create({
    data: {
      pondId,
      subjectType: 'USER',
      subjectId: ownerId,
      role: 'POND_ADMIN',
      scopeType: 'POND',
      scopeId: null,
      effect: 'ALLOW',
      createdBy: ownerId,
    },
  });
}