const base62 = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";

function toBase62(num) {
    let result = "";
    while (num > 0) {
        result = base62[num % 62] + result;
        num = Math.floor(num / 62);
    }
    return result;
}

function generateID() {
    const epochStart = new Date("2020-01-01").getTime();
    const now = Date.now() - epochStart;
    const random = Math.floor(Math.random() * 1000); // 3-digit random number
    const id = now * 1000 + random; // Combine timestamp + randomness
    return toBase62(id).padStart(8, "0").slice(0, 8); // Ensure 8 chars
}

console.log(generateID()); // Example output: "7zD2LmX1"