rust-todo-cli 0.2.3-beta.3

A CLI tool for managing to-do lists
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use crate::error::AppError;
use chrono::{DateTime, Local, NaiveDate, NaiveDateTime, TimeZone, Utc};

pub fn to_utc(native: &NaiveDateTime) -> Result<DateTime<Utc>, AppError> {
    let local = Local
        .from_local_datetime(native)
        .single()
        .ok_or(AppError::InvalidLocalTime)?;
    Ok(local.with_timezone(&Utc))
}

pub fn to_local_time(utc_time: &DateTime<Utc>) -> NaiveDateTime {
    let local = utc_time.with_timezone(&Local);
    local.naive_local()
}

pub fn parse_deadline_input(input: &str) -> Result<DateTime<Utc>, AppError> {
    if let Ok(date) = NaiveDate::parse_from_str(input, "%Y-%m-%d") {
        let datetime = date.and_hms_opt(23, 59, 59).unwrap();
        return to_utc(&datetime);
    }
    let datetime = NaiveDateTime::parse_from_str(input, "%Y-%m-%dT%H:%M:%S").map_err(|_| {
        AppError::InvalidDeadline {
            input: input.to_string(),
        }
    })?;
    to_utc(&datetime)
}