package callstest

import (
	"net/http"
	"regexp"
	"strings"
	"testing"
)

// hashedStylesheet is the fingerprinted URL shape the index page
// links: /static/tokens.<16 hex>.css.
var hashedStylesheet = regexp.MustCompile(`/static/tokens\.[0-9a-f]{16}\.css`)

// hashedTheme is the same shape for the vendored theme sheet:
// /static/theme.<16 hex>.css.
var hashedTheme = regexp.MustCompile(`/static/theme\.[0-9a-f]{16}\.css`)

func TestIndexRenders(t *testing.T) {
	c := newHarness(t, "paul@example.com").browser(t)
	c.signIn("paul@example.com")
	rec := c.get("/")
	if rec.Code != http.StatusOK {
		t.Fatalf("GET /: status %d, want 200", rec.Code)
	}
	if !strings.Contains(rec.Body.String(), "Meetings") {
		t.Errorf("GET /: page is missing its heading:\n%s", rec.Body.String())
	}
}

// /signin renders the same layout as every other page and needs no
// session, so it is what this test uses to find the fingerprinted
// stylesheet links now that "/" requires one. Both the structural
// tokens.css and the vendored theme.css must be there — a layout
// linking only tokens.css is exactly the unstyled-live-site bug this
// change fixes.
func TestIndexLinksFingerprintedStylesheet(t *testing.T) {
	h := newApp(t)
	body := get(t, h, "/signin").Body.String()
	for _, re := range []*regexp.Regexp{hashedStylesheet, hashedTheme} {
		href := re.FindString(body)
		if href == "" {
			t.Fatalf("signed-out page links no fingerprinted asset matching %s", re)
		}
		rec := get(t, h, href)
		if rec.Code != http.StatusOK {
			t.Fatalf("GET %s: status %d, want 200", href, rec.Code)
		}
		if got := rec.Header().Get("Cache-Control"); got != "public, max-age=31536000, immutable" {
			t.Errorf("GET %s: Cache-Control = %q, want immutable year", href, got)
		}
	}
}

// The bare name keeps working, just never long-cached — so a changed
// file always shows on an ordinary reload.
func TestBareAssetNameStaysFresh(t *testing.T) {
	h := newApp(t)
	for _, name := range []string{"/static/tokens.css", "/static/theme.css"} {
		rec := get(t, h, name)
		if rec.Code != http.StatusOK {
			t.Fatalf("GET %s: status %d, want 200", name, rec.Code)
		}
		if got := rec.Header().Get("Cache-Control"); got != "no-cache" {
			t.Errorf("GET %s: Cache-Control = %q, want no-cache", name, got)
		}
	}
}