# Workdays
`workdays` is a Rust library for computing work days and handling work calendars, inspired by the WORKDAY function in Excel. It provides functionality to define custom work weeks, add holidays, and compute dates based on a given number of work days.
## Features
- Compute end dates based on work days
- Calculate the number of work days between two dates
- Parse and handle work calendar configurations (YAML or JSON)
- Support for custom work days and holidays
- Flexible weekday parsing
## Installation
Add `workdays` as a depend in your `Cargo.toml`:
```bash
cargo add workdays
```
## Usage
Here's a quick example:
```rust
use workdays::WorkCalendar;
use chrono::NaiveDate;
use std::str::FromStr;
fn main() -> Result<(), Box<dyn std::error::Error>> {
let mut calendar = WorkCalendar::new();
calendar.add_holiday(NaiveDate::from_ymd_opt(2023, 12, 25).unwrap());
calendar.set_work_days("Mon,Tue,Wed,Thu,Fri")?;
let start_date = NaiveDate::from_ymd_opt(2023, 8, 21).unwrap();
let days_worked = 20;
let (end_date, calendar_duration) = calendar.compute_end_date(start_date, days_worked)?;
println!("End date: {}", end_date);
println!("Calendar duration: {} days", calendar_duration.num_days());
// Using FromStr to create a WorkCalendar from YAML or JSON
let config = r#"
work_days:
- Monday
- Tuesday
- Wednesday
holidays:
- 2023-12-25
"#;
let custom_calendar = WorkCalendar::from_str(config)?;
println!("Is Monday a work day? {}", custom_calendar.is_work_day(&chrono::Weekday::Mon));
Ok(())
}
```
## License
This project is licensed under the MIT License - see the [LICENSE](./LICENSE) file for details.
## Contributing
Contributions are welcome! Please feel free to submit a Pull Request.
## Acknowledgments
- Inspired by the WORKDAY function in Excel