// health — the simplest function: a GET diagnostic.
//
// Demonstrates: GET (input from the query string), reading `ctx.env`, and a
// pure synchronous handler (`Effect.sync`). No I/O, no secrets.
//
//   voltro serverless dev functions/health.serverless.ts
//   curl http://localhost:8910/

import { Effect, Schema } from 'effect'
import { defineServerless } from '@voltro/serverless'

export default defineServerless({
  name: 'health',
  method: 'GET',
  input: Schema.Struct({}),
  output: Schema.Struct({
    status: Schema.Literal('ok'),
    region: Schema.String,
    now: Schema.String,
  }),
  handler: (_input, ctx) =>
    Effect.sync(() => ({
      status: 'ok' as const,
      // The provider injects region into the env (Scaleway SCW_REGION, your own
      // VOLTRO_REGION on a node host). Cloudflare is global → 'edge'.
      region: ctx.env.VOLTRO_REGION ?? ctx.env.SCW_REGION ?? ctx.env.AWS_REGION ?? 'edge',
      now: new Date().toISOString(),
    })),
})