package savestatus

import (
	"bytes"
	"html/template"
	"os/exec"
	"strings"
	"testing"
)

func render(t *testing.T, data Data) string {
	t.Helper()
	view, err := template.New("test").Parse(Template())
	if err != nil {
		t.Fatal(err)
	}
	var b bytes.Buffer
	if err := view.ExecuteTemplate(&b, "estilo-save-status", data); err != nil {
		t.Fatal(err)
	}
	return b.String()
}

func TestRenderStatesAndSilentUnknown(t *testing.T) {
	for _, tc := range []struct{ state, want string }{
		{"saved", "gespeichert"}, {"saving", "guardando"},
		{"retrying", "再試行"}, {"failed", "فشل"},
		{"idle", ""}, {"unsupported", ""},
	} {
		t.Run(tc.state, func(t *testing.T) {
			got := render(t, Data{State: tc.state, Saved: "gespeichert", Saving: "guardando", Retrying: "再試行", Failed: "فشل"})
			if !strings.HasSuffix(got, ">"+tc.want+"</span>") {
				t.Fatalf("wrong initial text: %s", got)
			}
			for _, attr := range []string{`role="status"`, `aria-live="polite"`, `aria-atomic="true"`, `estilo-save-status="inline"`} {
				if !strings.Contains(got, attr) {
					t.Errorf("missing %s in %s", attr, got)
				}
			}
			if strings.Contains(got, "aria-hidden") || strings.Contains(got, " hidden") || strings.Contains(got, "aria-label") {
				t.Errorf("silent or unnamed region changed semantics: %s", got)
			}
			if tc.want == "" && !strings.Contains(got, `data-state="idle"`) {
				t.Errorf("unknown state was not normalized: %s", got)
			}
		})
	}
	got := render(t, Data{State: "failed", Placement: "floating"})
	if !strings.HasSuffix(got, "></span>") || !strings.Contains(got, `estilo-save-status="floating"`) {
		t.Fatalf("missing state text must stay empty: %s", got)
	}
}

func TestLabelsAndStatusTextAreEscaped(t *testing.T) {
	unsafe := `"><script>globalThis.fixture=1</script>&`
	got := render(t, Data{State: "failed", Failed: unsafe, Label: unsafe, Placement: unsafe})
	if strings.Contains(got, "<script>") || strings.Count(got, "<span ") != 1 || strings.Count(got, "</span>") != 1 {
		t.Fatalf("text became markup: %s", got)
	}
	if !strings.Contains(got, `estilo-save-status="inline"`) || !strings.Contains(got, `aria-label="&#34;&gt;&lt;script&gt;`) || !strings.HasSuffix(got, "&lt;/script&gt;&amp;</span>") {
		t.Fatalf("attribute or text escaping failed: %s", got)
	}
}

func TestJavaScriptStateTransitions(t *testing.T) {
	output, err := exec.Command("node", "--test", "status.test.mjs").CombinedOutput()
	if err != nil {
		t.Fatalf("status module: %v\n%s", err, output)
	}
}