package linknorm

import "testing"

func TestSanitizeShareText_BidiWrappers(t *testing.T) {
	raw := "\u2068vpn://abc\u2069"
	got := SanitizeShareText(raw)
	if got != "vpn://abc" {
		t.Fatalf("got %q", got)
	}
}

func TestNormalize_DirtyVPN(t *testing.T) {
	raw := "\u2068vpn://W0ludGVyZmFjZV0KQWRkcmVzcyA9IDEwLjguMS4xMy8zMgpETlMgPSAxLjEuMS4xClByaXZhdGVLZXkgPSBhSkpSYUFFY1RidWdJYjB2emFJcW5MQkZJQ0dqNlRkcXo1RC84OU13T0hZPQpKYyA9IDYKCltQZWVyXQpQdWJsaWNLZXkgPSBOUThJMVpPcUtxWmhGUXlxcXBuakRWc1poWXpkUk11Qm9tVXBzNWZPTTNzPQpFbmRwb2ludCA9IHJ1LmRlNGltYS51azo0MTQyMQpBbGxvd2VkSVBzID0gMC4wLjAuMC8w\u2069"
	// Use full user link instead for reliable parse
	raw = "\u2068vpn: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\u2069"
	u, proto, _, err := Normalize("", raw)
	if err != nil {
		t.Fatal(err)
	}
	if proto != "awg" {
		t.Fatalf("proto %q", proto)
	}
	if u == "" || !containsFold(u, "[Interface]") {
		t.Fatalf("normalized %q", u)
	}
}

func containsFold(s, sub string) bool {
	return len(s) >= len(sub) && (s == sub || len(sub) == 0 ||
		(len(s) > 0 && (stringIndexFold(s, sub) >= 0)))
}

func stringIndexFold(s, sub string) int {
	// simple contains for test
	for i := 0; i+len(sub) <= len(s); i++ {
		if s[i:i+len(sub)] == sub {
			return i
		}
	}
	return -1
}