import os
from glob import glob

from shutil import copyfile

from sync.data import Provider
from utils.fn import lmap
from utils.hash import hash_file


class FSProvider(Provider):
    def read(self, path):
        return open(self.get_abs(path), 'rb')

    def scan(self, path):
        return lmap(
            self.get_rel,
            map(
                lambda i: i.path,
                os.scandir(self.get_abs(path))
            )
        )

    def glob(self, pattr):
        return lmap(self.get_rel, glob(self.get_abs(pattr)))

    def type_filter(self, path, ext):
        return list(filter(
            lambda fn: os.path.splitext(fn)[1] == ext,
            self.scan(path)
        ))

    def hash(self, path):
        return hash_file(self.get_abs(path))

    def copy(self, path, out):
        file = self.get_abs(path)
        return copyfile(file, out)

    def size(self, path):
        file = self.get_abs(path)
        return os.path.getsize(file)

    def exists(self, path):
        file = self.get_abs(path)
        return os.path.exists(file)

    def is_dir(self, path):
        return os.path.isdir(self.get_abs(path))

    def get_local(self, path):
        return self.get_abs(path)