use tera::Tera;
use include_dir::Dir;

/// Add templates from include_dir!() to Tera
pub(crate) fn tera_includedir_walk_folder(tera : &mut Tera, dir: &Dir) {
    let mut templates = vec![];
    tera_includedir_walk_folder_inner(&mut templates, tera, dir);
    tera.add_raw_templates(templates);
}

fn tera_includedir_walk_folder_inner(collected : &mut Vec<(String, String)>, tera : &mut Tera, dir: &Dir) {
    for f in dir.files() {
        if f.path().extension().unwrap_or_default() != "tera" {
            continue;
        }

        let name = f.path().file_stem().unwrap().to_str().unwrap().split('.').nth(0).unwrap();
        let content = f.contents_utf8().unwrap();

        let p = f.path().parent().unwrap().join(name);
        let template_path = p.to_str().unwrap();

        debug!("Add template: {}", template_path);
        collected.push((template_path.to_string(), content.to_string()));
    }

    for subdir in dir.dirs() {
        tera_includedir_walk_folder_inner(collected, tera, subdir)
    }
}