import { describe, it, expect } from 'vitest';
import { transferOwnership } from '@/lib/services/yachts.service';
import { makeClient, makePort, makeYacht, makeAuditMeta } from '../helpers/factories';
import { db } from '@/lib/db';
import { yachtOwnershipHistory, yachts } from '@/lib/db/schema';
import { eq } from 'drizzle-orm';

describe('transferOwnership', () => {
  it('closes prior history row and opens a new one atomically', async () => {
    const port = await makePort();
    const clientA = await makeClient({ portId: port.id });
    const clientB = await makeClient({ portId: port.id });
    const yacht = await makeYacht({ portId: port.id, ownerType: 'client', ownerId: clientA.id });

    await transferOwnership(
      yacht.id,
      port.id,
      {
        newOwner: { type: 'client', id: clientB.id },
        effectiveDate: new Date(),
        transferReason: 'sale',
      },
      makeAuditMeta(),
    );

    const history = await db
      .select()
      .from(yachtOwnershipHistory)
      .where(eq(yachtOwnershipHistory.yachtId, yacht.id));
    expect(history).toHaveLength(2);
    const [prior, current] = history.sort((a, b) => a.startDate.getTime() - b.startDate.getTime());
    expect(prior!.endDate).not.toBeNull();
    expect(current!.endDate).toBeNull();
    expect(current!.ownerId).toBe(clientB.id);

    const updatedYacht = await db.query.yachts.findFirst({ where: eq(yachts.id, yacht.id) });
    expect(updatedYacht!.currentOwnerId).toBe(clientB.id);
  });

  it('rejects when newOwner = currentOwner (no-op)', async () => {
    const port = await makePort();
    const client = await makeClient({ portId: port.id });
    const yacht = await makeYacht({ portId: port.id, ownerType: 'client', ownerId: client.id });

    await expect(
      transferOwnership(
        yacht.id,
        port.id,
        { newOwner: { type: 'client', id: client.id }, effectiveDate: new Date() },
        makeAuditMeta(),
      ),
    ).rejects.toThrow(/same owner/i);
  });

  it('partial unique index prevents concurrent double-open ownership rows', async () => {
    // Prior to the atomic close-then-open, a naive impl would insert a new open row
    // without closing the old one. Verify this would be blocked at the DB level.
    const port = await makePort();
    const clientA = await makeClient({ portId: port.id });
    const clientB = await makeClient({ portId: port.id });
    const yacht = await makeYacht({ portId: port.id, ownerType: 'client', ownerId: clientA.id });

    await expect(
      db.insert(yachtOwnershipHistory).values({
        yachtId: yacht.id,
        ownerType: 'client',
        ownerId: clientB.id,
        startDate: new Date(),
        endDate: null,
        createdBy: 'test',
      }),
    ).rejects.toThrow(/duplicate key/i);
  });
});