package hook

import (
	"bufio"

	"tunnel/pkg/http"
	"tunnel/pkg/server/env"
	"tunnel/pkg/server/queue"
)

type infoHttpHook struct{}

type infoHttp struct {
	env env.Env
}

func (info *infoHttp) Send(rq, wq queue.Q) error {
	q := queue.New()
	s := bufio.NewScanner(q.Reader())

	go func() {
		for b := range rq {
			q <- b
			wq <- b
		}

		close(q)
	}()

	if s.Scan() {
		if method, uri, _, ok := http.ParseRequestLine(s.Text()); ok {
			info.env.Set("info", method+" "+uri)
		}
	}

	q.Dry()

	return nil
}

func (info *infoHttp) Recv(rq, wq queue.Q) error {
	return queue.Copy(rq, wq)
}

func (infoHttpHook) New(env env.Env) (interface{}, error) {
	return &infoHttp{env: env}, nil
}

func init() {
	register("info-http", infoHttpHook{})
}