use chrono::{DateTime, Utc, Duration};
/// Adds a specified number of weeks to the current UTC date and time.
///
/// # Arguments
/// * `weeks` - The number of weeks to add (supports negative numbers to subtract).
///
/// # Returns
/// * `DateTime<Utc>` - The resulting future date and time.
pub fn add_weeks_to_current_date(weeks: i64) -> DateTime<Utc> {
// 1. Get the current date and time in UTC
let current_time = Utc::now();
// 2. Construct a Duration for the specified number of weeks.
// Chrono's Duration::weeks handles the internal conversion to days/seconds safely.
let duration = Duration::weeks(weeks);
// 3. Add the duration to the current time
// (Rust operators are overloaded; this returns a brand-new DateTime instance).
current_time + duration
}
fn main() {
let weeks_to_add: i64 = 4;
// Calculate the future date and time
let future_date = add_weeks_to_current_date(weeks_to_add);
// Format the output as YYYY-MM-DD using strftime-like formatting
println!("Adding {} weeks to today gives: {}", weeks_to_add, future_date.format("%Y-%m-%d"));
}
/*
run:
Adding 4 weeks to today gives: 2026-12-06
*/
