package server

import (
	"net/http"
	"net/http/httptest"
	"testing"
	"time"
)

type observedDeadlineWriter struct {
	*httptest.ResponseRecorder
	writes, reads int
	deadline      time.Time
}

func (w *observedDeadlineWriter) SetWriteDeadline(d time.Time) error {
	w.writes++
	w.deadline = d
	return nil
}
func (w *observedDeadlineWriter) SetReadDeadline(d time.Time) error { w.reads++; return nil }

func TestResponseWriteDeadlines(t *testing.T) {
	raw := &observedDeadlineWriter{ResponseRecorder: httptest.NewRecorder()}
	w := &deadlineWriter{ResponseWriter: raw}
	w.WriteHeader(200)
	if raw.writes != 1 || !raw.deadline.After(time.Now()) {
		t.Fatal("headers lack deadline")
	}
	if _, err := w.Write([]byte("body")); err != nil {
		t.Fatal(err)
	}
	if err := w.FlushError(); err != nil {
		t.Fatal(err)
	}
	if raw.writes != 3 {
		t.Fatal("write/flush must refresh deadline", raw.writes)
	}
	if err := http.NewResponseController(w).SetReadDeadline(time.Time{}); err != nil || raw.reads != 1 {
		t.Fatal("wrapper must preserve read deadline control", err)
	}
}

func TestNonStreamResponseHasWriteDeadline(t *testing.T) {
	s := testServer(t)
	raw := &observedDeadlineWriter{ResponseRecorder: httptest.NewRecorder()}
	s.ServeHTTP(raw, httptest.NewRequest("GET", "/admin/api/session", nil))
	if raw.Code != 200 || raw.writes == 0 || !raw.deadline.After(time.Now()) {
		t.Fatal("nonstream response lacks write deadline")
	}
}