#    legalmd: Markdown-based legal markup
#    Copyright © 2019  Lee Yingtong Li (RunasSudo)
#
#    This program is free software: you can redistribute it and/or modify
#    it under the terms of the GNU Affero General Public License as published by
#    the Free Software Foundation, either version 3 of the License, or
#    (at your option) any later version.
#
#    This program is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#    GNU Affero General Public License for more details.
#
#    You should have received a copy of the GNU Affero General Public License
#    along with this program.  If not, see <https://www.gnu.org/licenses/>.

import argparse
import re
import sys

import frontmatter
import mistletoe

from . import legal_token
from . import latex_renderer, rtf_renderer

parser = argparse.ArgumentParser()
parser.add_argument('--format', default='tex', choices=['tex', 'rtf'])
parser.add_argument('filename')
args = parser.parse_args()

rawdoc = frontmatter.load(args.filename)

renderer_cls = {'tex': latex_renderer.LaTeXRenderer, 'rtf': rtf_renderer.RTFRenderer}[args.format]

with renderer_cls() as renderer:
	doc = mistletoe.Document(rawdoc.content.splitlines())
	
	doc.title = rawdoc.get('title', '')
	doc.author = rawdoc.get('author', '')
	doc.footer = rawdoc.get('footer', '')
	
	doc.lmarg = rawdoc.get('lmarg', '1cm')
	doc.contentsmarg = rawdoc.get('contentsmarg', '1cm')
	doc.latexpre = rawdoc.get('latexpre', '')
	
	doc.full_label_map = {}
	
	# Preprocess custom tokens
	def walk_elem(elem, parent=None):
		elem.doc = doc
		elem.parent = parent
		
		if isinstance(elem, legal_token.NumberedHeading) or isinstance(elem, legal_token.SubrulesItem):
			full_label = elem.full_label()
			if full_label:
				doc.full_label_map[full_label] = elem
		
		if hasattr(elem, 'children'):
			for child in elem.children:
				walk_elem(child, elem)
	
	walk_elem(doc)
	
	print(renderer.render(doc))