import {
  BOOKING_SOURCE,
  BOOKING_TABS,
  bookingsForTab,
  customerAppBookings,
  isCustomerAppBooking,
  quotedPrice,
  serviceOptionOf,
  serviceType,
} from '@/lib/customerAppBookings';

/**
 * Which bookings belong on the Bookings page.
 *
 * The page shows what customers booked in the app; Orders shows what this
 * console created. `bookingsource` is the only field that separates them, and
 * the trap is its second value: the API and routes were renamed from "CRM" to
 * "express", but the STORED column value was deliberately left as
 * `"CRM_Console"` because it is existing data rather than a label. Matching on
 * "express" would silently show every console order on the customer page.
 */

const appBooking = (over = {}) => ({
  bookingid: 1,
  bookingno: 'BK-1',
  bookingsource: 'Customer_App',
  status: 'Pending_Pickup',
  ...over,
});

const consoleBooking = (over = {}) => ({
  bookingid: 2,
  bookingno: 'BK-2',
  bookingsource: 'CRM_Console',
  status: 'Pending_Pickup',
  ...over,
});

describe('isCustomerAppBooking', () => {
  it('should accept a booking made in the app', () => {
    expect(isCustomerAppBooking(appBooking())).toBe(true);
  });

  it('should reject a console-created booking', () => {
    expect(isCustomerAppBooking(consoleBooking())).toBe(false);
  });

  it('should still reject the console value under its post-rename name', () => {
    // The outward naming became "express"; the stored value never did. Anything
    // that starts matching on "express" here has misunderstood that.
    expect(BOOKING_SOURCE.CONSOLE).toBe('CRM_Console');
    expect(isCustomerAppBooking({ bookingsource: 'express' })).toBe(false);
  });

  it('should tolerate casing and stray whitespace', () => {
    // Compared against a raw database column, not a validated enum.
    expect(isCustomerAppBooking({ bookingsource: ' customer_app ' })).toBe(true);
    expect(isCustomerAppBooking({ bookingsource: 'CUSTOMER_APP' })).toBe(true);
  });

  it('should not claim a booking with no source', () => {
    // Filing unknown rows under "customer app" would overstate B2C volume, and
    // that is a number people make decisions on.
    expect(isCustomerAppBooking({})).toBe(false);
    expect(isCustomerAppBooking({ bookingsource: '' })).toBe(false);
    expect(isCustomerAppBooking(null)).toBe(false);
    expect(isCustomerAppBooking(undefined)).toBe(false);
  });
});

describe('customerAppBookings', () => {
  it('should keep only app bookings and drop console ones', () => {
    const list = [appBooking({ bookingid: 1 }), consoleBooking({ bookingid: 2 }), appBooking({ bookingid: 3 })];
    expect(customerAppBookings(list).map((b) => b.bookingid)).toEqual([3, 1]);
  });

  it('should order newest first', () => {
    const list = [appBooking({ bookingid: 5 }), appBooking({ bookingid: 42 }), appBooking({ bookingid: 12 })];
    expect(customerAppBookings(list).map((b) => b.bookingid)).toEqual([42, 12, 5]);
  });

  it('should not mutate the list it was given', () => {
    // The same array is the Orders page's cache entry — sorting it in place
    // would reorder another page's rows underneath it.
    const list = [appBooking({ bookingid: 1 }), appBooking({ bookingid: 9 })];
    customerAppBookings(list);
    expect(list.map((b) => b.bookingid)).toEqual([1, 9]);
  });

  it('should return an empty list rather than throw on nothing', () => {
    expect(customerAppBookings(undefined)).toEqual([]);
    expect(customerAppBookings(null)).toEqual([]);
    expect(customerAppBookings([])).toEqual([]);
  });
});

describe('the price quote', () => {
  const withOptions = (options) => appBooking({ serviceoptions: options });

  it('should read the service option the booking carries', () => {
    const b = withOptions([{ servicetype: 'Fast', estimatedprice: 210, createdat: '2026-09-01T10:00:00Z' }]);
    expect(serviceType(b)).toBe('Fast');
    expect(quotedPrice(b)).toBe(210);
  });

  it('should take the newest option when a booking has several', () => {
    // Matches the backend's own `ORDER BY createdat DESC LIMIT 1`, so the page
    // and GET /customer/bookings/{id}/price cannot disagree.
    const b = withOptions([
      { servicetype: 'Normal', estimatedprice: 100, createdat: '2026-09-01T10:00:00Z' },
      { servicetype: 'Superfast', estimatedprice: 300, createdat: '2026-09-02T10:00:00Z' },
    ]);
    expect(serviceOptionOf(b).servicetype).toBe('Superfast');
    expect(quotedPrice(b)).toBe(300);
  });

  it('should report no quote rather than a zero price', () => {
    // A booking with no service option has no price. Rendering 0 would read as
    // "free", which is a different claim.
    expect(serviceOptionOf(appBooking())).toBeNull();
    expect(serviceOptionOf(withOptions([]))).toBeNull();
    expect(serviceType(appBooking())).toBe('');
  });

  it('should not throw on a missing booking', () => {
    expect(() => quotedPrice(undefined)).not.toThrow();
    expect(quotedPrice(undefined)).toBe(0);
  });
});

describe('the status tabs', () => {
  it('should let the All tab through untouched', () => {
    const list = [appBooking({ status: 'Pending_Pickup' }), appBooking({ status: 'Cancelled' })];
    expect(bookingsForTab(list, 'all')).toHaveLength(2);
  });

  it('should put an uncollected unassigned booking under Created tab', () => {
    const list = [
      appBooking({ bookingid: 1, status: 'Pending_Pickup' }),
      appBooking({ bookingid: 2, status: 'Created' }),
      appBooking({ bookingid: 3, status: 'Miler_Assigned' }),
    ];
    expect(bookingsForTab(list, 'created').map((b) => b.bookingid)).toEqual([1, 2]);
  });

  it('should put an assigned / in-progress booking under Rider Assigned tab', () => {
    const list = [
      appBooking({ bookingid: 1, status: 'Miler_Assigned' }),
      appBooking({ bookingid: 2, status: 'Converted_To_Consignment' }),
      appBooking({ bookingid: 3, status: 'Pending_Pickup' }),
    ];
    expect(bookingsForTab(list, 'assigned').map((b) => b.bookingid)).toEqual([1, 2]);
  });

  it('should match status case-insensitively', () => {
    expect(bookingsForTab([appBooking({ status: 'CANCELLED' })], 'cancelled')).toHaveLength(1);
  });

  it('should fall back to showing everything for an unknown tab', () => {
    // An unknown tab value can only come from a bug in the page. Falling back to
    // the full list keeps the data visible; silently returning nothing would
    // look identical to "this customer has no bookings", which is a lie the
    // operator cannot see through.
    expect(bookingsForTab([appBooking()], 'nonsense')).toHaveLength(1);
  });

  it('should give every tab a value and a label', () => {
    BOOKING_TABS.forEach((t) => {
      expect(t.value).toBeTruthy();
      expect(t.label).toBeTruthy();
    });
  });
});