import pkg from '@/package.json';
import { describe, expect, it } from 'vitest';
import { openApiSpec } from './openapi';

describe('OpenAPI spec', () => {
  it('documents every public endpoint', () => {
    expect(Object.keys(openApiSpec.paths).sort()).toEqual(['/api/jump', '/api/version', '/api/world']);
  });

  it('describes the world endpoints as WorldState in and out', () => {
    const world = openApiSpec.paths['/api/world'].get.responses[200].content['application/json'].schema;
    expect(world.$ref).toBe('#/components/schemas/WorldState');

    const jump = openApiSpec.paths['/api/jump'].post;
    expect(jump.requestBody.content['application/json'].schema.$ref).toBe('#/components/schemas/JumpRequest');
    expect(jump.responses[200].content['application/json'].schema.$ref).toBe('#/components/schemas/WorldState');
    for (const status of ['400', '404', '409'] as const) {
      expect(jump.responses[status].content['application/json'].schema.$ref).toBe('#/components/schemas/Error');
    }
  });

  it('keeps info.version in sync with package.json', () => {
    expect(openApiSpec.info.title).toBe('SpaceWanderer API');
    expect(openApiSpec.info.version).toBe(pkg.version);
  });

  it('uses an empty server url so "try it" targets the current origin', () => {
    expect(openApiSpec.servers).toEqual([{ url: '' }]);
  });

  it('describes /api/version as { version } with a string version', () => {
    const schema = openApiSpec.paths['/api/version'].get.responses[200].content['application/json'].schema;
    expect(schema.$ref).toBe('#/components/schemas/AppVersion');

    const appVersion = openApiSpec.components.schemas.AppVersion.properties;
    expect(Object.keys(appVersion)).toEqual(['version']);
    expect(appVersion.version.type).toBe('string');
  });
});