import os

from .constants import PACKAGE_JSON_FILENAME, NODE_MODULES_DIRNAME, NODE_MODULES_BUNDLE_FILENAME


def s_rooted(p):
    return os.path.join("$S", p)


def b_rooted(p):
    return os.path.join("$B", p)


def build_pj_path(p):
    return os.path.join(p, PACKAGE_JSON_FILENAME)


def build_nm_path(p):
    return os.path.join(p, NODE_MODULES_DIRNAME)


def build_nm_bundle_path(p):
    return os.path.join(p, NODE_MODULES_BUNDLE_FILENAME)


def extract_package_name_from_path(p):
    # if we have scope prefix then we are using the first two tokens, otherwise - only the first one
    parts = p.split("/", 2)
    return "/".join(parts[:2]) if p.startswith("@") else parts[0]