import { describe, expect, it } from 'vitest'

import { TypeDeclarationGenerator } from '../src/discovery/type-generator.js'
import type { TypeRegistry } from '../src/types/index.js'

const registry: TypeRegistry = {
  'GET /users': {
    method: 'GET',
    lastSeen: Date.now(),
    samples: [],
    request: {
      type: 'object',
      properties: { id: { type: 'string' } },
      required: ['id']
    },
    response: {
      type: 'array',
      items: {
        type: 'object',
        properties: {
          id: { type: 'string' },
          email: { type: 'string' }
        },
        required: ['id']
      }
    }
  }
}

describe('type generator', () => {
  it('emits request and response aliases', () => {
    const generator = new TypeDeclarationGenerator(registry)
    const snapshot = generator.generate({ namespace: 'API' })
    expect(snapshot).toContain('export type GetUsersRequest')
    expect(snapshot).toContain('declare namespace API')
    expect(snapshot).toContain("'GET /users': { request: GetUsersRequest; response: GetUsersResponse; method: 'GET'; path: '/users' }")
  })
})