use crate::cli::PathBuf;
use crate::util::read_lines;

pub fn subcmd_day001(file: &Option<PathBuf>, top: &i32, total: &bool) {
    if let Ok(lines) = read_lines(file.as_ref().unwrap().as_path()) {
        // Consumes the iterator, returns an (Optional) String
        let mut nutri: i32 = 0;
        let mut hist: Vec<i32> = Vec::new();

        for line in lines {
            if let Ok(num) = line {
                if num.is_empty() {
                    hist.push(nutri);
                    nutri = 0;
                } else {
                    nutri += num.parse::<i32>().unwrap();
                }
            }
        }
        hist.sort();
        let hist_len = hist.len();
        let mut top_total: i32 = 0;
        for x in 0..*top{
            let index: usize = hist_len - 1 - usize::try_from(x).unwrap();
            top_total += hist[index];
            println!("{:?}", hist[index]);
        }
        if *total{
            println!("Total:");
            println!("{:?}", top_total);
        }
    }
}