"""
Vhex core backend for local package
"""
import os

from core.logger import log
from core.pkg.backend.core import VxRemoteBackendCore
from core.pkg.version import VxVersion

__all__ = [
    'VxBackendLocal'
]

class VxBackendLocal(VxRemoteBackendCore):
    """
    Vhex backend local package class
    """

    #---
    # Public properties
    #---

    @property
    def name(self):
        return 'local'

    @property
    def url(self):
        return self._url

    @property
    def package_list(self):
        if self._pkg_list:
            return self._pkg_list

        if not os.path.exists(self._url):
            os.makedirs(self._url)
            return []

        self._pkg_list = []
        for file in os.listdir(self._url):
            if not os.path.isdir(f"{self._url}/{file}"):
                continue
            exists = False
            for pkg in self._pkg_list:
                if pkg['name'] == file.split('@')[1]:
                    exists = True
                    break
            if exists:
                continue
            self._pkg_list.append({
                'name'           : file.split('@')[1],
                'full_name'      : f"{self._url}/{file.split('@')[1]}",
                'description'    : None,
                'url'            : f"{self._url}/{file}",
                'created'        : None,
                'updated'        : None,
                'author'         : file.split('@')[0],
                'default_branch' : None,
                'versions'       : [
                    VxVersion(file.split('@')[2], file.split('@')[3], 'local')
                ]
            })
        return self._pkg_list

    #---
    # Private methods
    #---

    def package_fetch_versions(self, pkg):
        return pkg['versions']

    #---
    # Public methods
    #---

    def package_clone(self, pkg, prefix=None):
        if not prefix:
            prefix = os.getcwd()
        if not os.path.exists(prefix):
            os.makedirs(prefix)
        if not os.path.exists(f"{prefix}/{pkg['name']}"):
            log.debug(f"[local] link '{pkg['url']}' > '{prefix}/{pkg['name']}'")
            os.symlink(
                pkg['url'],
                f"{prefix}/{pkg['name']}",
                target_is_directory=True
            )
        return f"{prefix}/{pkg['name']}"