#!/usr/bin/env python3

from flask import Flask, abort
import markdown as Markdown
from os.path import join, isfile
from functools import cache
from os import getenv


data_path = getenv('DATA_PATH', 'data')
app = Flask(__name__)


@cache
def pathfinder(path):
    if path == '/':
        path = ''

    for local_path in [
        join(data_path, f'{path}.md'),
        join(data_path, path, 'index.md'),
    ]:
        if isfile(local_path):
            return local_path

    abort(404)


@cache
@app.route('/', defaults={'path': ''})
@app.route('/<path:path>')
def catch_all(path):
    local_path = pathfinder(path)

    if isfile(local_path):
        with open(local_path, 'r') as file:
            return Markdown.markdown(file.read())


@app.route('/favicon.ico')
def favicon():
    return ""