import os.path
from datetime import datetime


def message(category, text):
    if message.level <= 0:
        sep = "  "
    else:
        sep = "--"
    print("%s %s%s[%s]%s%s" % (
        datetime.now().isoformat(),
        max(0, message.level) * "  |",
        sep,
        category,
        max(1, (14 - len(category))) * " ",
        text))
message.level = -1


def next_level():
    message.level += 1


def back_level():
    message.level -= 1


def set_cache_path_base(base):
    trim_base.base = base


def untrim_base(path):
    return os.path.join(trim_base.base, path)


def trim_base_custom(path, base):
    if path.startswith(base):
        path = path[len(base):]
    if path.startswith('/'):
        path = path[1:]
    return path


def trim_base(path):
    return trim_base_custom(path, trim_base.base)


def cache_base(path, filepath=False):
    if len(path) == 0:
        return "root"
    elif filepath and len(path.split(os.sep)) < 2:
        path = "root-" + path
    path = trim_base(path).replace(
        '/', '-').replace(
        ' ', '_').replace(
        '(', '').replace(
        '&', '').replace(
        ',', '').replace(
        ')', '').replace(
        '#', '').replace(
        '[', '').replace(
        ']', '').replace(
        '"', '').replace(
        "'", '').replace(
        '_-_', '-').lower()
    while path.find("--") != -1:
        path = path.replace("--", "-")
    while path.find("__") != -1:
        path = path.replace("__", "_")
    return path


def json_cache(path):
    return cache_base(path) + ".json"


def image_cache(path, size, square=False):
    if square:
        suffix = str(size) + "s"
    else:
        suffix = str(size)
    return cache_base(path, True) + "_" + suffix + ".jpg"


def video_cache(path):
    return cache_base(path, True) + ".mp4"


def file_mtime(path):
    return datetime.fromtimestamp(int(os.path.getmtime(path)))