export const FINANCIAL_DISCLAIMER =
"Informational use only. This is not financial advice.";
function fmtNumber(value: number | undefined, decimals = 2): string {
if (value === undefined || Number.isNaN(value)) {
return "n/a";
}
return value.toFixed(decimals);
}
function fmtPercent(value: number | undefined): string {
if (value === undefined || Number.isNaN(value)) {
return "n/a";
}
return `${value.toFixed(2)}%`;
}
function fmtDateFromUnix(timestamp: number | undefined): string {
if (!timestamp) {
return "n/a";
}
return new Date(timestamp * 1000).toISOString();
}
export function formatResponse(options: {
title: string;
lines: string[];
source?: string;
warning?: string;
includeDisclaimer?: boolean;
}): string {
const chunks: string[] = [options.title];
if (options.source) {
chunks.push(`Source: ${options.source}`);
}
if (options.warning) {
chunks.push(`Warning: ${options.warning}`);
}
chunks.push(...options.lines);
if (options.includeDisclaimer ?? true) {
chunks.push("---", FINANCIAL_DISCLAIMER);
}
return chunks.join("\n");
}
export function lineMoney(label: string, value: number | undefined): string {
return `${label}: $${fmtNumber(value)}`;
}
export function lineNumber(label: string, value: number | undefined, decimals = 2): string {
return `${label}: ${fmtNumber(value, decimals)}`;
}
export function linePercent(label: string, value: number | undefined): string {
return `${label}: ${fmtPercent(value)}`;
}
export function lineDate(label: string, timestamp: number | undefined): string {
return `${label}: ${fmtDateFromUnix(timestamp)}`;
}
