// shareLink — turn a resource id into a short-lived share URL.
//
// Demonstrates: POST with a JSON body, schema-typed input/output, `ctx.env`
// config, and runtime hints (memory / timeout / region). Pure compute — no
// I/O — so it is trivially edge-safe and scales to zero.
//
//   curl -X POST http://localhost:8910/ -d '{"resourceId":"doc-1","ttlMinutes":30}'

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

export default defineServerless({
  name: 'share-link',
  method: 'POST',
  input: Schema.Struct({
    resourceId: Schema.String.pipe(Schema.minLength(1)),
    ttlMinutes: Schema.Number.pipe(Schema.greaterThan(0)),
  }),
  output: Schema.Struct({
    url: Schema.String,
    expiresAt: Schema.Number,
  }),
  runtime: { memoryMb: 128, timeoutSeconds: 10, region: 'fr-par' },
  handler: ({ resourceId, ttlMinutes }, ctx) =>
    Effect.sync(() => {
      const base = ctx.env.SHARE_BASE_URL ?? 'https://share.example'
      const expiresAt = Date.now() + ttlMinutes * 60_000
      return { url: `${base}/s/${encodeURIComponent(resourceId)}?exp=${expiresAt}`, expiresAt }
    }),
})