const jsonIdx = process.argv.indexOf("--json");
const xmlIdx = process.argv.indexOf("--xml");

export const jsonMode = jsonIdx !== -1;
export const xmlMode = xmlIdx !== -1;

if (jsonIdx !== -1) process.argv.splice(jsonIdx, 1);
if (xmlIdx !== -1) process.argv.splice(xmlIdx, 1);

function escapeXml(val: unknown): string {
	return String(val ?? "")
		.replace(/&/g, "&")
		.replace(/</g, "&lt;")
		.replace(/>/g, "&gt;")
		.replace(/"/g, "&quot;");
}

function toXmlItem(obj: Record<string, unknown>, tag = "item"): string {
	const attrs = Object.entries(obj)
		.filter(([, v]) => v === null || typeof v !== "object")
		.map(([k, v]) => `${k}="${escapeXml(v)}"`)
		.join(" ");
	const children = Object.entries(obj)
		.filter(([, v]) => v !== null && typeof v === "object")
		.map(([k, v]) =>
			Array.isArray(v)
				? `<${k}>${v
						.map((i) =>
							typeof i === "object" && i !== null
								? toXmlItem(i as Record<string, unknown>)
								: `<item>${escapeXml(i)}</item>`,
						)
						.join("")}</${k}>`
				: toXmlItem(v as Record<string, unknown>, k),
		)
		.join("");
	return `<${tag}${attrs ? " " + attrs : ""}>${children}</${tag}>`;
}

export function toXml(results: readonly unknown[]): string {
	return `<results>\n${results.map((r) => "  " + toXmlItem(r as Record<string, unknown>)).join("\n")}\n</results>`;
}