// POST /api/buy {"owner", "count"}: transactions that each mint one blank in the wave on sale,
// signed by the new blank's key and the co-signer. The wallet signs them next and the app hands
// them to /api/send.

import { buildBuy } from '../../server/card.ts'
import { ConfigError, configFailure, contextFor, cosignerFor, gate, type CardEnv } from '../../server/env.ts'
import { failure, json, readBody } from '../../server/http.ts'

export const onRequestPost: PagesFunction<CardEnv> = async ({ request, env }) => {
  const body = await readBody(request, ['owner', 'count'])
  if (!body) return json({ error: 'Expected {"owner", "count"}.', code: 'bad-request' }, 400)
  const refused = await gate(request, env, 'buy', 20)
  if (refused) return refused
  try {
    const ctx = await contextFor(env)
    const built = await buildBuy(ctx, await cosignerFor(env, ctx), { owner: body.owner, count: body.count })
    console.log('buy built', built.wave, built.count, String(body.owner))
    return json(built)
  } catch (err) {
    return err instanceof ConfigError ? configFailure(err) : failure(err, 'buy')
  }
}