#!/usr/bin/env python

__doc__ = '''
Create a new post/page.

Usage:
  newpost.py <title> [--page] [-t <tag>...]
  newpost.py -h | --help | --version

Options:
  --page           Create a 'page' as opposed to a 'post'.
  -t, --tags       Specify the tags for the page/post.
  -v, --version    Show version information and exit.
  -h, --help       Show this help and exit.
'''

template = '''{title}
{title_underline}

:date: {date}
:tags: {tags}
:author: {author}
'''

import os
import sys
import os.path
import datetime 
from docopt import docopt

import pelicanconf  # To get the blog author

def main():
    args = docopt(__doc__)
    today = datetime.date.today()
    
    # Locate the blog directory and check that ``content`` exists
    cwd = os.path.dirname(os.path.realpath(__file__))
    assert os.path.exists(cwd + '/content')
    
    # Generate a file from title + date in the blog's content directory
    if not args['--page']:
        filename = os.path.join(cwd, 'content/{0}-{1}.rst'.format(today, args['<title>'].lower().replace(' ', '-').replace('.', '')))
    else:
        if not os.path.exists(cwd + '/content/pages'):
            os.mkdir(cwd + '/content/pages')
        filename = os.path.join(cwd, 'content/pages/{0}.rst'.format(args['<title>'].lower().replace(' ', '-').replace('.', '')))
    
    if os.path.exists(filename):
        print('Error: A file for that title already exists.')
        sys.exit(1)

    with open(filename, 'w') as f:
        f.write(template.format(
            title = args['<title>'],
            title_underline = '#' * len(args['<title>']),
            tags = ', '.join([t.lower() for t in args['<tag>']]) if args['<tag>'] is not None else '',
            date = today,
            author = pelicanconf.AUTHOR,
        ))

if __name__ == '__main__':
    main()