import Database from 'better-sqlite3';
import { Customer } from '../src/auth';
import { SqliteCustomerRepo } from '../src/db/customer-repo';

const customer = (apiKey: string): Customer => ({
  id: 'cust_1',
  name: 'Ada',
  tierId: 'pro',
  apiKey,
  stripeCustomerId: 'cus_123',
});

describe('SqliteCustomerRepo', () => {
  it('finds a customer by API key', () => {
    const repo = new SqliteCustomerRepo(new Database(':memory:'), [customer('key-ada')]);
    expect(repo.findByApiKey('key-ada')?.tierId).toBe('pro');
  });

  it('returns undefined for an unknown key', () => {
    const repo = new SqliteCustomerRepo(new Database(':memory:'), [customer('key-ada')]);
    expect(repo.findByApiKey('wrong')).toBeUndefined();
  });

  it('lists all customers with their Stripe ids', () => {
    const repo = new SqliteCustomerRepo(new Database(':memory:'), [customer('key-ada')]);
    const all = repo.list();
    expect(all).toHaveLength(1);
    expect(all[0].stripeCustomerId).toBe('cus_123');
  });

  it('seeds only when the table is empty', () => {
    const db = new Database(':memory:');
    new SqliteCustomerRepo(db, [customer('key-ada')]);
    const again = new SqliteCustomerRepo(db, [customer('key-other')]);
    expect(again.list().map((c) => c.apiKey)).toEqual(['key-ada']);
  });

  it('save() upserts including the multiplier override', () => {
    const repo = new SqliteCustomerRepo(new Database(':memory:'), [customer('key-ada')]);
    repo.save({ ...customer('key-ada'), tierId: 'business', multiplierOverride: 0.4 });
    const updated = repo.findByApiKey('key-ada');
    expect(updated?.tierId).toBe('business');
    expect(updated?.multiplierOverride).toBe(0.4);
    expect(repo.list()).toHaveLength(1);
  });

  it('round-trips billingType and email', () => {
    const repo = new SqliteCustomerRepo(new Database(':memory:'), [customer('key-ada')]);
    repo.save({ ...customer('key-ada'), billingType: 'purchase_order', email: 'ada@example.com' });
    const updated = repo.findByApiKey('key-ada');
    expect(updated?.billingType).toBe('purchase_order');
    expect(updated?.email).toBe('ada@example.com');
  });

  it('migrates a legacy table, defaulting billingType to stripe', () => {
    const db = new Database(':memory:');
    db.exec(`CREATE TABLE customers (
      id TEXT PRIMARY KEY, name TEXT NOT NULL, tier_id TEXT NOT NULL,
      api_key TEXT NOT NULL UNIQUE, stripe_customer_id TEXT, multiplier_override REAL
    )`);
    db.prepare(
      `INSERT INTO customers (id, name, tier_id, api_key) VALUES ('cust_1', 'Ada', 'pro', 'key-ada')`,
    ).run();
    const repo = new SqliteCustomerRepo(db);
    const migrated = repo.findByApiKey('key-ada');
    expect(migrated?.billingType).toBe('stripe');
    expect(migrated?.email).toBeUndefined();
    // and new columns are writable after migration
    repo.save({ ...migrated!, billingType: 'purchase_order' });
    expect(repo.findByApiKey('key-ada')?.billingType).toBe('purchase_order');
  });

  it('finds a customer by email (case-insensitive)', () => {
    const repo = new SqliteCustomerRepo(new Database(':memory:'), [
      { ...customer('key-ada'), email: 'Ada@Example.com' },
    ]);
    expect(repo.findByEmail('ada@example.com')?.id).toBe('cust_1');
    expect(repo.findByEmail('nobody@example.com')).toBeUndefined();
  });

  it('round-trips portal identity fields', () => {
    const repo = new SqliteCustomerRepo(new Database(':memory:'), [customer('key-ada')]);
    repo.save({
      ...customer('key-ada'),
      passwordHash: 'scrypt:16384:8:1:c2FsdA==:aGFzaA==',
      totpSecret: 'ABC234',
      totpEnabled: true,
      balanceCents: 2500,
      emailInvoicing: true,
    });
    const updated = repo.findByApiKey('key-ada');
    expect(updated?.passwordHash).toBe('scrypt:16384:8:1:c2FsdA==:aGFzaA==');
    expect(updated?.totpSecret).toBe('ABC234');
    expect(updated?.totpEnabled).toBe(true);
    expect(updated?.balanceCents).toBe(2500);
    expect(updated?.emailInvoicing).toBe(true);
  });

  it('defaults portal identity fields for legacy rows', () => {
    const db = new Database(':memory:');
    db.exec(`CREATE TABLE customers (
      id TEXT PRIMARY KEY, name TEXT NOT NULL, tier_id TEXT NOT NULL,
      api_key TEXT NOT NULL UNIQUE, stripe_customer_id TEXT, multiplier_override REAL
    )`);
    db.prepare(
      `INSERT INTO customers (id, name, tier_id, api_key) VALUES ('cust_1', 'Ada', 'pro', 'key-ada')`,
    ).run();
    const repo = new SqliteCustomerRepo(db);
    const migrated = repo.findByApiKey('key-ada');
    expect(migrated?.passwordHash).toBeUndefined();
    expect(migrated?.totpSecret).toBeUndefined();
    expect(migrated?.totpEnabled).toBe(false);
    expect(migrated?.balanceCents).toBe(0);
    expect(migrated?.emailInvoicing).toBe(false);
  });
});