use crate::configuration::Configuration;
use std::fmt::Write;
use std::fs::read_dir;
use std::io::{Error, ErrorKind, Result};
use std::path::PathBuf;

pub fn status(configuration: &Configuration) -> Result<String> {
    let mut status_message = String::new();

    status_message.push_str("# Blog\n");

    // Main Configuration Locations
    let blog_count = count_entries(&configuration.posts_directory);
    writeln!(&mut status_message, "Number of posts in blog: {blog_count}")
        .map_err(|_| Error::new(ErrorKind::Other, "Unable to write status"))?;

    let archive_count = count_entries(&configuration.archive_directory);
    writeln!(
        &mut status_message,
        "Number of posts in archive: {archive_count}"
    )
    .map_err(|_| Error::new(ErrorKind::Other, "Unable to write status"))?;
    Ok(status_message)
}

fn count_entries(path: &PathBuf) -> String {
    match read_dir(path) {
        Ok(entries) => entries.filter_map(Result::ok).count().to_string(),
        Err(_) => "0".to_string(),
    }
}