import { type ClassValue, clsx } from "clsx";
import { twMerge } from "tailwind-merge";

export function cn(...inputs: ClassValue[]) {
	return twMerge(clsx(inputs));
}

export const formatDate = (date: Date): string => {
	return date.toLocaleDateString("en-US", {
		year: "numeric",
		month: "long",
		day: "numeric",
	});
};

/**
 * Copy text to clipboard with fallback for older browsers and non-secure contexts.
 * Returns true if successful, false otherwise.
 */
export async function copyToClipboard(text: string): Promise<boolean> {
	// Use modern Clipboard API if available and in secure context
	if (navigator.clipboard && window.isSecureContext) {
		try {
			await navigator.clipboard.writeText(text);
			return true;
		} catch (err) {
			console.error("Clipboard API failed:", err);
			return false;
		}
	}

	// Fallback for non-secure contexts or browsers without Clipboard API
	const textArea = document.createElement("textarea");
	textArea.value = text;

	// Avoid scrolling to bottom
	textArea.style.top = "0";
	textArea.style.left = "0";
	textArea.style.position = "fixed";
	textArea.style.opacity = "0";

	document.body.appendChild(textArea);
	textArea.focus();
	textArea.select();

	try {
		const successful = document.execCommand("copy");
		document.body.removeChild(textArea);
		return successful;
	} catch (err) {
		console.error("Fallback copy failed:", err);
		document.body.removeChild(textArea);
		return false;
	}
}