#! /usr/bin/env python3
# encoding: utf-8

import os
import pathlib
import over

# --------------------------------------------------

def parse_fps(raw):
	if "/" in raw:
		num, den = (int(x) for x in raw.split("/"))
		
		return float(num) / float(den)
	
	return float(raw)

# --------------------------------------------------

def to_Path(raw_path):
	"""
	Returns pathlib.Path pointing to raw_path, handling "~/" correctly.
	
	To be removed after python:3.5 move.
	"""
	
	if raw_path.startswith("~"):
		raw_path = os.path.expanduser(raw_path)
	
	return pathlib.Path(raw_path)

# --------------------------------------------------

context_file_header = """# Context file for %s-%s
# This file stores configuration valid for this directory.
# It is updated automatically with options you use.

"""

def update_cfg_context(main, ignore=[]):
	"""
	All main.options that are sourced from either the cfg file or defaults get overridden by those in .over-video.
	Those that are from command line get saved into .over-video.
	
	File format:
	name=value
	"""
	
	options_to_consider = [option for option in main.options.values() if option.name not in ignore and option.in_cfg_file]
	options_to_write = {option.name: option for option in options_to_consider if option.source == over.app.Option_sources.command_line}
	options_to_read = {option.name: option for option in options_to_consider if option.source != over.app.Option_sources.command_line}
	
	context_file_read = over.app.ConfigFile(options_to_read, ".over-video", ignore_unknown=True)
	restored = context_file_read.read_config()
	if restored:
		main.print("restored from <m>.over-video<.>: %s" %(", ".join("<g>%s<.>" %(o.name) for o in restored)), main.print.tl.note)
	
	context_file_write = over.app.ConfigFile(options_to_write, ".over-video")
	added = context_file_write.update_config(context_file_header, (main.name, main.version))
	if added:
		main.print("added to <m>.over-video<.>: %s" %(", ".join("<g>%s<.>" %(o.name) for o in added)))