#!/usr/bin/env python3

import sys
from strictyaml import load as load_yaml
from ipo import read, write, map, starstarmap, join, sort, ipo
from glob import glob
from markdown import markdown
import re


@ipo
def parted(data, regex):
	"""
	Two parts of data, delimited by the first element on which regex fullmatches.

	If a delimiter is found, the second part is an iterator over the remaining elements. Else it is None.
	"""
	first = []

	it = iter(data)
	try:
		while True:
			item = next(it)
			if re.fullmatch(regex, item):
				break
			first.append(item)
	except StopIteration:
		return (first, None)

	return (first, it)


with open("blog.html") as blog_fh:
	TEMPLATE = blog_fh.read()

with open(sys.argv[1]) as file_in:
	metadata_yaml, content = read(file_in) | parted("---+")
	metadata = load_yaml(metadata_yaml | join("\n")).data
	body = markdown(content | join("\n"), extras=[])

with open(sys.argv[2], "w") as file_out:
	TEMPLATE.format(**metadata, body=body) | write(file=file_out)