export function generatePrice(enteros: number, decimales: number) {
    return (Math.floor(Math.random() * (10 ^ enteros)) / (10 ^ decimales)).toString()
}

export const CURRENCIES = ["USD", "EUR", "JPY"]

export function pickCurrencies(currencies: string[]) {
    if (currencies.length == 1) return currencies[0]
    const max = currencies.length
    const min = 0
    const select = Math.floor(Math.random() * (max - min)) + min
    return currencies[select]
}

export function randomDecimal(enteros: number, decimales: number) {
    return (Math.floor(
        Math.random() * (10 ** (enteros + decimales + 1)))
        /
        (10 ** (decimales))
    ).toString()
}

export function randomDecimalGenerator(enteros: number, decimales: number) {
    return () => randomDecimal(enteros, decimales)
}

export function randomEmail() {
    const domains = ["gmail.com", "outlook.com"]
    const seleccionDominio = Math.floor(Math.random() * domains.length)
    const randName = Math.random().toString(36).substring(3)
    return randName + "@" + domains[seleccionDominio]
}

export function randomIntegerGenerator(max: number, min: number) {
    return () => randomInteger(max, min)
}

export function randomInteger(max: number, min: number) {
    return Math.floor(Math.random() * (max + min + 1) - min)
}

export function randomISODate() {
    // 1. Generate a random date (between year 2000 and now)
    const start = new Date(2000, 0, 1).getTime();
    const end = new Date().getTime();
    const date = new Date(Math.floor(Math.random() * (end - start + 1) + start));

    // 2. Generate a random offset
    // Standard offsets range from -12 to +14 hours. 
    // We'll pick a random hour and either 00, 30, or 45 minutes.
    const offsetHours = Math.floor(Math.random() * (14 - (-12) + 1)) + (-12);
    const offsetMinutes = [0, 30, 45][Math.floor(Math.random() * 3)];

    // 3. Format the offset string (e.g., +05:30 or -08:00)
    const sign = offsetHours >= 0 ? "+" : "-";
    const absHours = Math.abs(offsetHours).toString().padStart(2, '0');
    const absMinutes = offsetMinutes.toString().padStart(2, '0');
    const offsetStr = `${sign}${absHours}:${absMinutes}`;

    // 4. Manually construct the ISO string
    const pad = (n: number) => n.toString().padStart(2, '0');

    const year = date.getFullYear();
    const month = pad(date.getMonth() + 1);
    const day = pad(date.getDate());
    const hours = pad(date.getHours());
    const minutes = pad(date.getMinutes());
    const seconds = pad(date.getSeconds());
    const ms = date.getMilliseconds().toString().padStart(3, '0');

    return `${year}-${month}-${day}T${hours}:${minutes}:${seconds}.${ms}${offsetStr}`;
}