package calls

import (
	"bytes"
	"log/slog"
	"net/http"
	"net/http/httptest"
	"strings"
	"testing"
	"time"
)

// A panic inside the router is the 500 page with a reference and the
// viewer's chrome for a browser, and plain text for a fetch (spec §3.3).
func TestAPanicIsTheErrorPageWithAReference(t *testing.T) {
	f := newHomeRouterFixture(t)
	boom := f.app.recoverToErrorPage(http.HandlerFunc(func(http.ResponseWriter, *http.Request) { panic("boom") }))
	r := httptest.NewRequest("GET", homeTestOrigin+"/m/x", nil)
	r.Header.Set("Accept", "text/html")
	w := httptest.NewRecorder()
	boom.ServeHTTP(w, r)
	body := w.Body.String()
	if w.Code != 500 || !strings.Contains(body, "<title>Something went wrong · Calls</title>") || !strings.Contains(body, "Reference:") ||
		!strings.Contains(body, "<header estilo-bar>") || !strings.Contains(body, `href="/m/x">Try again</a>`) {
		t.Fatalf("panic page: %d\n%s", w.Code, body)
	}
	r = httptest.NewRequest("GET", homeTestOrigin+"/m/x/info", nil)
	w = httptest.NewRecorder()
	boom.ServeHTTP(w, r)
	if w.Code != 500 || !strings.HasPrefix(w.Header().Get("Content-Type"), "text/plain") {
		t.Fatalf("panic for a fetch: %d %q", w.Code, w.Header().Get("Content-Type"))
	}
}

// Astra on #24, finding 3 (Memoria #21's shape): the test above builds
// recoverToErrorPage by hand, so taking it out of the router left it
// green. This one panics inside a REAL route — the return cookie's clock,
// read by /signin/local?return_to= — through the production router,
// signed in and out, and checks the 500 page with a reference, the
// viewer's own chrome, and that the panic's value reaches neither the
// page nor the log.
func TestARoutePanicIsTheErrorPageThroughTheRouter(t *testing.T) {
	const sentinel = "secret-sentinel-title"
	for _, signed := range []bool{true, false} {
		f := newHomeRouterFixture(t)
		if signed {
			f.local(t)
		}
		var logs bytes.Buffer
		f.app.logger = slog.New(slog.NewTextHandler(&logs, nil))
		f.app.store.clk.set(func() time.Time { panic(sentinel) })
		r := httptest.NewRequest("GET", homeTestOrigin+"/signin/local?return_to=%2Fsettings", nil)
		r.Header.Set("Accept", "text/html")
		for _, c := range f.cookies {
			r.AddCookie(c)
		}
		w := httptest.NewRecorder()
		func() {
			defer func() {
				if v := recover(); v != nil {
					t.Fatalf("signed in=%v: the panic escaped the router: %v", signed, v)
				}
			}()
			f.handler.ServeHTTP(w, r)
		}()
		b := w.Body.String()
		if w.Code != http.StatusInternalServerError || !strings.Contains(b, "<title>Something went wrong · Calls</title>") || !strings.Contains(b, "rst-error-ref") {
			t.Errorf("signed in=%v: %d, want the 500 page with a reference:\n%s", signed, w.Code, b)
		}
		if strings.Contains(b, "estilo-account") != signed {
			t.Errorf("signed in=%v: the 500 page's chrome is not the viewer's", signed)
		}
		if strings.Contains(b, sentinel) || strings.Contains(logs.String(), sentinel) {
			t.Errorf("signed in=%v: the panic's value reached the page or the log", signed)
		}
		if !strings.Contains(logs.String(), "ref=") {
			t.Errorf("signed in=%v: no reference in the log: %s", signed, logs.String())
		}
	}
}