#!/usr/bin/env python3
from os import listdir, mkdir
from sys import exit
import argparse

def get_output(content, template="{content}"):
    return template.format(content = content)

def main():
    parser = argparse.ArgumentParser()
    parser.add_argument('--input', '-i', help='input directory (default "blog")', default='blog')
    parser.add_argument('--output', '-o', help='output directory (default "output")', default='output')
    parser.add_argument('--template', '-t', help='template to use (default "template"', default='template')
    args = parser.parse_args()

    src = args.input

    dest = args.output
    try: mkdir(dest)
    except FileExistsError: pass

    template = args.template
    with open(template) as t:
        template_contents = t.read()

    for file in listdir(src):
        with open(src + '/' + file, 'r') as fin:
            file_contents = fin.read()
        output = get_output(file_contents, template=template_contents)
        with open(dest + '/' + file, 'w') as fout:
            fout.write(output)

if __name__ == '__main__':
    exit(main())