#!/usr/bin/env python3
import os
import markdown
import jinja2


def parse(mdtext, parser=None):
    if parser is None:
        parser = markdown.Markdown(extensions=['meta'], output_format='html5')
    html = parser.convert(mdtext)
    # get markdown metadata
    data = {key: parser.Meta[key][0] for key in parser.Meta.keys()}
    data.update({
        'content': html,
    })
    return data


def parse_file(filepath, parser=None):
    with open(filepath) as fh:
        return parse(fh.read(), parser=parser)


def index(folder):
    data = {'pages': []}
    parser = markdown.Markdown(extensions=['meta'], output_format='html5')
    for dirpath, _, files in os.walk(folder):
        valid_files = (os.path.join(dirpath, f)
                       for f in files
                       if f.endswith('.md'))
        for fpath in valid_files:
            data['pages'].append(parse_file(fpath, parser=parser))
    return data


def compile(template, data):
    t = jinja2.Template(template)
    return t.render(**data)