import Fastify from 'fastify'
import apophisPlugin from 'apophis-fastify'

const fastify = Fastify()

// APOPHIS auto-registers @fastify/swagger
await fastify.register(apophisPlugin, {})

// Behavioral contract: what you send is what you get back.
// This is not a structural test — the schema already validates shape.
// This checks that the server does not mutate or drop fields.
fastify.post('/echo', {
  schema: {
    'x-category': 'observer',
    'x-ensures': [
      'response_body(this) == request_body(this)'
    ],
    body: {
      type: 'object',
      properties: { message: { type: 'string' } }
    },
    response: {
      200: {
        type: 'object',
        properties: { message: { type: 'string' } }
      }
    }
  }
}, async (req) => req.body)

await fastify.ready()

// Run contract tests
const result = await fastify.apophis.contract({ runs: 10 })
console.log(result.summary)