type Params = {
    href: string;
    pathname: string;
    /** Only match the exact path, not its sub-paths */
    strict?: boolean;
};

function normalizePath(path: string) {
    const trimmed = path.replace(/\/+$/, "");
    return trimmed || "/";
}

/**
 * # Check whether a link points to the current page
 * A non-strict link matches its own path and any sub-path, segment-wise:
 * `/blog` matches `/blog` and `/blog/post`, but not `/blogging`. The root
 * link `/` only ever matches `/`. Links to other origins never match.
 */
export default function twuiLinkMatchesPath({
    href,
    pathname,
    strict,
}: Params): boolean {
    if (href.startsWith("#")) return false;

    let linkPath: string;

    try {
        const origin =
            typeof window !== "undefined"
                ? window.location.origin
                : "http://twui.local";
        const url = new URL(href, origin);
        if (url.origin !== origin) return false;
        linkPath = normalizePath(url.pathname);
    } catch {
        return false;
    }

    const currentPath = normalizePath(pathname);

    if (strict || linkPath === "/") return linkPath === currentPath;

    return currentPath === linkPath || currentPath.startsWith(`${linkPath}/`);
}