import os
import pickle
import gzip
from .parameters import PICKLE_PROTOCOL, GZIP_LEVEL
from .core.helpers import console


def writeSets(sets, dest):
    destPath = os.path.expanduser(dest)
    (baseDir, fileName) = os.path.split(destPath)
    if not os.path.exists(baseDir):
        try:
            os.makedirs(baseDir, exist_ok=True)
        except Exception:
            console(f'Cannot create directory "{baseDir}"', error=True)
            return False
    with gzip.open(destPath, "wb", compresslevel=GZIP_LEVEL) as f:
        pickle.dump(sets, f, protocol=PICKLE_PROTOCOL)
    return True


def readSets(source):
    sourcePath = os.path.expanduser(source)
    if not os.path.exists(sourcePath):
        console(f'Sets file "{source}" does not exist.')
        return False
    with gzip.open(sourcePath, "rb") as f:
        sets = pickle.load(f)
    return sets