import os
import sys
from pathlib import Path
from copy import deepcopy

import markdown

import chevron


SOURCE_ROOT = os.path.join(
    os.path.abspath(os.path.join(os.getcwd(), os.pardir)),
    'content')

DESTINATION_ROOT = '/var/www/creativespirit.tech/html'

TEMPLATE_FILE = '../templates/page_template.mustache'

if len(sys.argv) == 4:
    SOURCE_ROOT = sys.argv[1]
    DESTINATION_ROOT = sys.argv[2]
    TEMPLATE_FILE = sys.argv[3]


def process_content_dir(root, nodes):
    # More on listing files in a dir:
    # https://stackoverflow.com/questions/3207219/how-do-i-list-all-files-of-a-directory
    
    base_path = os.path.join(root, *nodes)
    
    for entry in os.listdir(base_path):

        if os.path.isfile(os.path.join(base_path, entry)):
            process_single_file(root, nodes, entry)
        
        else:
            new_nodes = deepcopy(nodes)
            new_nodes.append(entry)
            process_content_dir(root, new_nodes)


def process_single_file(root, nodes, file_name):
    save_html(
        DESTINATION_ROOT,
        nodes,
        get_html_name(file_name),
        render_template(
            preprocess_markdown(
                get_markdown(
                    os.path.join(root, *nodes, file_name)))))


def preprocess_markdown(text):
    # Points links to .html
    return text.replace(
        '.md)', '.html)'
        ).replace(
            '.md"', '.html"'
        )


def get_markdown(file_path):
    with open(file_path, 'r') as f:
        text = f.read()
        return markdown.markdown(text)


def render_template(body_text):
    with open(TEMPLATE_FILE, 'r') as f:
        template = f.read()

    args = {
        'template': template,
        'data': {
            'body_text': body_text,
            },
    }

    html = chevron.render(**args)
    # print(html)
    return html


def get_html_name(file):
    return f'{Path(file).stem}.html'


def save_html(root, nodes, file_name, html):
    with open(
        os.path.join(
            root,
            *nodes,
            file_name), 
            'w') as f:
        f.write(html)


process_content_dir(SOURCE_ROOT, [])