package service

import "testing"

func TestNormalizeBgURL(t *testing.T) {
	okEmpty, ok := NormalizeBgURL("  ")
	if !ok || okEmpty != "" {
		t.Fatalf("empty should clear, got %q ok=%v", okEmpty, ok)
	}
	good := "/uploads/backgrounds/0123456789abcdef0123456789abcdef.webp"
	got, ok := NormalizeBgURL(good)
	if !ok || got != good {
		t.Fatalf("want %s, got %q ok=%v", good, got, ok)
	}
	rejects := []string{
		"http://evil.test/x.webp",
		"/uploads/backgrounds/../avatars/x.webp",
		"/uploads/images/0123456789abcdef0123456789abcdef.webp",
		"/uploads/backgrounds/0123456789abcdef0123456789abcdef.gif",
		`/uploads/backgrounds/0123456789abcdef0123456789abcdef.webp")`,
		"/uploads/backgrounds/short.webp",
		"javascript:alert(1)",
	}
	for _, u := range rejects {
		if _, ok := NormalizeBgURL(u); ok {
			t.Fatalf("should reject %q", u)
		}
	}
}

func TestNormalizeBgMode(t *testing.T) {
	m, ok := NormalizeBgMode("")
	if !ok || m != DefaultBgMode {
		t.Fatalf("empty mode want cover, got %q ok=%v", m, ok)
	}
	if _, ok := NormalizeBgMode("zoom"); ok {
		t.Fatal("unknown mode should fail")
	}
	for _, want := range []string{
		BgModeCover, BgModeContain, BgModeRepeat, BgModeRepeatX, BgModeRepeatY, BgModeStretch, BgModeCenter,
	} {
		got, ok := NormalizeBgMode(" " + want + " ")
		if !ok || got != want {
			t.Fatalf("mode %s: got %q ok=%v", want, got, ok)
		}
	}
}

func TestNormalizeBgSurface(t *testing.T) {
	if s, ok := NormalizeBgSurface("SITE"); !ok || s != BgSurfaceSite {
		t.Fatalf("site: %q %v", s, ok)
	}
	if _, ok := NormalizeBgSurface("frontend"); ok {
		t.Fatal("frontend is not a surface")
	}
}