from collections import namedtuple

from itertools import combinations

import logging

import yaml

logger = logging.getLogger(__name__)

General = namedtuple(

"General",

[

"log_open_cmd",

"default_entry_style",

"click_hit_tolerance",

"shell",

"plot_title",

"x_axis_name",

"y_axis_name",

"legend_title",

],

)

General.__new__.__defaults__ = (None,) * len(General._fields)

ConfEntry = namedtuple("ConfEntry", ["identifier", "value", "label", "initial_state"])

# stuff after value are optional

ConfEntry.__new__.__defaults__ = (None, None)

SpecialConfEntry = namedtuple(

"SpecialConfEntry", ["identifier", "value", "label", "regex", "style"]

)

# stuff after value are optional

SpecialConfEntry.__new__.__defaults__ = (None, None, None)

Conf = namedtuple("Conf", ["general", "entries", "special_entries"])

def _loag_yaml(path):

with open(path) as f:

return yaml.safe_load(f)

def read(default_path, user_path):

default = _loag_yaml(default_path)

user = _loag_yaml(user_path)

# General settings from default and then override by user defined

general = default.get("general", {})

general.update(user.get("general", {}))

general = General(**general)

# Log entry specific settings only from user

basics = [ConfEntry(**e) for e in user["entries"]]

for e1, e2 in combinations(basics, 2):

if e1.identifier in e2.identifier or e2.identifier in e1.identifier:

logger.warning(

"Colliding identifiers: {} {}".format(e1.identifier, e2.identifier)

)

specials = [SpecialConfEntry(**e) for e in user.get("special-entries", [])]

return Conf(general, basics, specials)