import { describe, expect, it } from 'vitest';
import { operationCatalogRegistry } from './operation-catalog-data.js';
import { OperationCatalogService } from './operation-catalog-service.js';

const service = new OperationCatalogService(operationCatalogRegistry);

describe('OperationCatalogService', () => {
  it('returns a frozen contract-safe default page with six fields only', () => {
    const page = service.list({});
    expect(page.page).toEqual({ page: 1, pageSize: 25, total: 117 });
    expect(page.items).toHaveLength(25);
    expect(Object.keys(page.items[0]!)).toEqual([
      'operationId',
      'title',
      'risk',
      'capability',
      'batchable',
      'parameterSchemaId',
    ]);
    expect(page.items.map(({ operationId }) => operationId)).toEqual(
      [...page.items.map(({ operationId }) => operationId)].sort(),
    );
    expect(Object.isFrozen(page)).toBe(true);
    expect(Object.isFrozen(page.items)).toBe(true);
    expect(page.items.every(Object.isFrozen)).toBe(true);
  });

  it('filters all supported fields and searches case-insensitively', () => {
    const filtered = service.list({
      risk: 'R0',
      capability: 'query',
      batchable: false,
      search: 'sms',
    });
    expect(filtered.items.length).toBeGreaterThan(0);
    expect(
      filtered.items.every(
        (item) =>
          item.risk === 'R0' &&
          item.capability === 'query' &&
          !item.batchable &&
          /sms/i.test(`${item.operationId} ${item.title}`),
      ),
    ).toBe(true);
  });

  it('keeps operationId ascending as the final tie breaker when descending', () => {
    for (const sort of ['operationId', 'risk', 'capability'] as const) {
      const page = service.list({ pageSize: 100, sort, direction: 'desc' });
      for (let index = 1; index < page.items.length; index += 1) {
        const previous = page.items[index - 1]!;
        const current = page.items[index]!;
        if (previous[sort] === current[sort])
          expect(previous.operationId < current.operationId).toBe(true);
      }
    }
  });

  it('returns an empty beyond-last page without changing total', () => {
    const page = service.list({ page: 999 });
    expect(page.items).toEqual([]);
    expect(page.page.total).toBe(117);
  });
});