#!/usr/bin/env python3
"""gallery-html - generate thumbnails and print html for images

Usage:
  gallery-html [--source <pattern>...] [--output <dir>] [--base_url <url>] [-x <n>] [-y <n>] [--json <filename>] [--html <filename>] [--square] [--overwrite]
  gallery-html (-h | --help)
  gallery-html (-v | --version)

Options:
  --source <pattern>  Source directory or image file(s) to make gallery from
  --output <dir>      Parent directory on local filesystem for thumbnails
  --base_url <url>    Base URL for images
  -x <n>              Maximum width of thumbnails in pixels
  -y <n>              Maximum height of thumbnails in pixels
  --json <filename>   Render JSON output to filename
  --html <filename>   Render HTML output to filename
  --square            Fit thumbnails to squares
  --overwrite         Replace existing thumbnail files
  -h --help           Show this screen
  -v --version        Display version
"""

from docopt import docopt
from galleryhtml import galleryhtml
import sys

if __name__ == '__main__':
    args = docopt(__doc__, version='html-gallery 0.8.0')

    gh = galleryhtml.GalleryHTML()

    # This, friends, is kind of silly:
    if args['--base_url']:
        gh.base_url = args['--base_url']
    if args['--output']:
        gh.output_dir = args['--output']
    if args['-x']:
        gh.x = int(args['-x'])
    if args['-y']:
        gh.y = int(args['-y'])

    if args['--overwrite']:
        gh.overwrite = True

    if args['--square']:
        gh.square = True

    # Actually accumulate the images to be printed, either from a given source
    # or from the current directory.
    if args['--source']:
        gh.add_images_from(args['--source'])
    else:
        gh.add_images_from('.')

    # Write JSON data if requested:
    if args['--json']:
        with open(args['--json'], 'w') as f:
            f.write(gh.images_json())

    # Write HTML data if requested:
    if args['--html']:
        with open(args['--html'], 'w') as f:
            f.write(gh.images_html())

    sys.exit()