#! /usr/bin/python3

# needs lowdown and feegden installed
# feedgen can be installed with pip
# also expects that *.md files are in blog/ directory

from feedgen.feed import FeedGenerator
import subprocess
import os

blogs_dir = os.fsencode("blog")

def blogposts_list_gen():
    output_list = []
    for file in os.listdir(blogs_dir):
        filename = os.fsdecode(file)
        if filename.endswith(".md"):
            full_path = "blog/" + filename

            author = subprocess.run("lowdown -X author " + full_path, capture_output=True, shell=True, text=True).stdout.strip()
            title = subprocess.run("lowdown -X title " + full_path, capture_output=True, shell=True, text=True).stdout.strip()
            time = subprocess.run("lowdown -X time " + full_path, capture_output=True, shell=True, text=True).stdout.strip()
            content_html = subprocess.run("lowdown " + full_path, capture_output=True, shell=True, text=True).stdout.strip()

            output_list.append([author, title, time, content_html, full_path])
    return output_list

def feedgen(blogs):
    fg = FeedGenerator()
    fg.id('http://dmz.rs/')
    fg.title('Decentrala Blog')
    fg.author( {'name':'Decentrala','email':'dmz@dmz.rs'} )
    fg.link( href='https://dmz.rs/atom.xml', rel='self' )

    for post in blogs:
        fe = fg.add_entry()
        fe.id("https://dmz.rs/" + post[4][:-3] + ".html")
        fe.author({'name': post[0]})
        fe.title(post[1])
        fe.updated(post[2])
        fe.content(content=post[3], type='html')

    fg.atom_file('atom.xml')

feedgen(blogposts_list_gen())