use std::path::{Path, PathBuf};
use crate::errors::{NyxError, NyxResult};

/// Determine `<project-name, path/to/<project>.sqlite>`.
pub fn get_project_info(
  project_path: &Path,
  config_dir:   &Path,
) -> NyxResult<(String, PathBuf)> {

  let project_name = project_path
    .file_name()
    .and_then(|n| n.to_str())
    .ok_or_else(|| NyxError::Other("Unable to determine project name".into()))?;

  let db_name = sanitize_project_name(project_name);
  let db_path = config_dir.join(format!("{}.sqlite", db_name));

  Ok((project_name.to_owned(), db_path))
}

pub fn sanitize_project_name(name: &str) -> String {
  name.to_lowercase()
    .chars()
    .map(|c| match c {
      ' ' | '\t' | '\n' | '\r'               => '_',
      c if c.is_alphanumeric() || c == '_' || c == '-' => c,
      _                                      => '_',
    })
    .collect::<String>()
    .split('_')
    .filter(|s| !s.is_empty())
    .collect::<Vec<_>>()
    .join("_")
}