package agentapi

import (
	"context"
	"errors"
	"net/http"
	"net/http/httptest"
	"strings"
	"testing"
	"time"
)

// R-1247: GET /host/line-test decodes the agent's weekly line test, and an agent before the route is a typed 404 (the
// controller reads it as „not measured" → no qBittorrent limit).
func TestLineTestDecodesAndAnOlderAgentIs404(t *testing.T) {
	mux := http.NewServeMux()
	mux.HandleFunc("GET /host/line-test", func(w http.ResponseWriter, r *http.Request) {
		_, _ = w.Write([]byte(`{"ok":true,"data":{"present":true,"mbps":90.7,"measured_at":"2026-10-24T06:31:00Z","method":"iperf3-tunnel"}}`))
	})
	s := httptest.NewTLSServer(mux)
	defer s.Close()
	st, err := clientFor(t, s, strings.TrimPrefix(s.URL, "https://")).LineTest(context.Background())
	if err != nil {
		t.Fatal(err)
	}
	if !st.Present || st.Mbps != 90.7 || !st.MeasuredAtTime().Equal(time.Date(2026, 10, 24, 6, 31, 0, 0, time.UTC)) {
		t.Fatalf("state = %+v", st)
	}
	old := httptest.NewTLSServer(http.NewServeMux())
	defer old.Close()
	_, err = clientFor(t, old, strings.TrimPrefix(old.URL, "https://")).LineTest(context.Background())
	var se *StatusError
	if !errors.As(err, &se) || se.Code != http.StatusNotFound {
		t.Fatalf("an older agent must answer a typed 404, got %v", err)
	}
}

// R-1250: the request decodes its outcome, waiting_for_quiet decodes, and the request outlasts the client's own
// timeout (the agent answers after about 55 s; the client's default is 15 s).
func TestLineTestRunOutlastsTheClientTimeout(t *testing.T) {
	mux := http.NewServeMux()
	mux.HandleFunc("GET /host/line-test", func(w http.ResponseWriter, r *http.Request) {
		_, _ = w.Write([]byte(`{"ok":true,"data":{"present":false,"waiting_for_quiet":true}}`))
	})
	mux.HandleFunc("POST /host/line-test/run", func(w http.ResponseWriter, r *http.Request) {
		time.Sleep(300 * time.Millisecond)
		_, _ = w.Write([]byte(`{"ok":true,"data":{"ok":true,"mbps":93.5,"runs_mbps":[92,93.5,93]}}`))
	})
	s := httptest.NewTLSServer(mux)
	defer s.Close()
	c := clientFor(t, s, strings.TrimPrefix(s.URL, "https://"))
	st, err := c.LineTest(context.Background())
	if err != nil || st.Present || !st.WaitingForQuiet {
		t.Fatalf("GET = %+v %v, want present:false waiting_for_quiet:true", st, err)
	}
	c.hc.Timeout = 100 * time.Millisecond // stands in for the 15 s default against a 55 s answer
	if _, err := c.post(context.Background(), "/host/line-test/run", struct{}{}); err == nil {
		t.Fatal("the plain POST should time out here — the seam does not test anything")
	}
	res, err := c.LineTestRun(context.Background())
	if err != nil || !res.OK || res.Mbps != 93.5 || len(res.RunsMbps) != 3 {
		t.Fatalf("LineTestRun = %+v %v", res, err)
	}
}