aikup 0.0.11

Manage multiple versions of aiken
Documentation 
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use std::path::PathBuf;

use miette::IntoDiagnostic;

pub async fn create_dir_all_if_not_exists(path: &PathBuf) -> miette::Result<()> {
    if !path.try_exists().into_diagnostic()? {
        tokio::fs::create_dir_all(path).await.into_diagnostic()?;
    }

    Ok(())
}

pub async fn remove_file_if_exists(path: &PathBuf) -> miette::Result<()> {
    if path.try_exists().into_diagnostic()? {
        tokio::fs::remove_file(path).await.into_diagnostic()?;
    }

    Ok(())
}

pub fn root_dir() -> miette::Result<PathBuf> {
    let Some(aiken_root) = dirs::home_dir().map(|home| home.join(".aiken")) else {
        miette::bail!("cannot find home directory")
    };

    Ok(aiken_root)
}

pub async fn read_parent_name_from_link(path: &PathBuf) -> Option<(PathBuf, String)> {
    tokio::fs::read_link(&path).await.ok().and_then(|link| {
        link.parent().and_then(|parent| {
            parent.file_name().and_then(|l| l.to_str()).and_then(|l| {
                if l.contains('v') {
                    Some((link.clone(), l.to_string()))
                } else {
                    parent.parent().and_then(|parent| {
                        parent
                            .file_name()
                            .and_then(|l| l.to_str())
                            .map(|l| (link.clone(), l.to_string()))
                    })
                }
            })
        })
    })
}