package demo

import (
	"context"
	omnierrors "git.yuntuo.hk/k2safe/go-omni/errors"
	"git.yuntuo.hk/k2safe/go-omni/httpx"
	"io"
	"strings"
)

func (l *Logic) Callback(ctx context.Context, body *httpx.Body) (*httpx.Stream, error) {
	// The route's 64-byte limit bounds this example's memory use. A real signature
	// implementation can hash body.Raw incrementally and authenticate its headers.
	data, err := io.ReadAll(body.Raw)
	if err != nil {
		return nil, err
	}
	if body.Header.Get("X-Signature") != "valid" {
		return nil, omnierrors.ByCode("INVALID")
	}
	return &httpx.Stream{Content: io.NopCloser(strings.NewReader("ACK:" + string(data)))}, nil
}