git ssb

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#!/usr/bin/python3
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__copyright__ = """
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    Scuttleblog
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    Copyright (C) 2017 Greg K Nicholson
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    This program is free software:
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    you can redistribute it and/or modify it
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    under the terms of the GNU Affero General Public License
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    as published by the Free Software Foundation,
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    either version 3 of the License,
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    or (at your option) any later version.
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    This program is distributed in the hope that it will be useful,
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    but WITHOUT ANY WARRANTY;
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    without even the implied warranty
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    of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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    See the GNU Affero General Public License for more details.
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    You should have received a copy
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    of the GNU Affero General Public License
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    along with this program.
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    If not, see <https://www.gnu.org/licenses/>.
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"""
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import datetime
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import json
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import os
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import re
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import time
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import subprocess
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import conf
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scuttleblog_dir = os.path.dirname(__file__)
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def run_sbot():
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    for attempt in range(100):
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        try:
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            subprocess.check_output(['sbot', 'status'])
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        except:
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            subprocess.Popen(['sbot', 'server'])
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            time.sleep(5)
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        else:
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            break
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def get_user_posts(ssb_userid):
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    user_posts_args = ['sbot', 'createUserStream', '--id', ssb_userid]
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    json_posts_args = ['json', '--group', \
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                       '-c', 'this.value.content.type == "post"', \
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                       '-c', 'this.value.content.text != null', \
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                       '-c', 'this.value.content.text != ""', \
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                       '-c', 'this.value.content.root == null']
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    user_posts_stream = subprocess.Popen(user_posts_args,
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                                         stdout = subprocess.PIPE)
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    user_posts_json = subprocess.check_output(json_posts_args,
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                                              stdin = user_posts_stream.stdout)
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    user_posts = json.loads(user_posts_json)
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    return user_posts
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def define_post_text(text):
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    text = text.strip()
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    title = text.splitlines()[0]
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    title = re.sub('^\W+\s+', '', title)
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    maxlength = 140
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    ellipsis = '...'
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    if len(title) > maxlength:
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        title = title[:maxlength].rsplit(' ', 1)[0] + ellipsis
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        body = text
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    elif len(text.splitlines()) > 2 \
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             and re.fullmatch('^\s*$', str(text.splitlines()[1])):
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        body = ''.join(text.splitlines(keepends=True)[2:]).strip()
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    else:
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        body = text
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    return {'title': title, 'body': body}
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def build_post_structure(p):
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    post = {}
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    post['frontmatter'] = {}
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    post['frontmatter']['key'] = p['key']
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    post['frontmatter']['title'] = define_post_text(
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                                       p['value']['content']['text'])['title']
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    time = datetime.datetime.fromtimestamp(int(p['value']['timestamp']
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                                               / 1000),
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                                           datetime.timezone.utc)
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    post['frontmatter']['date'] = time.strftime('%Y-%m-%dT%H:%M:%SZ')
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    post['frontmatter']['sequence'] = p['value']['sequence']
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    post['body'] = define_post_text(p['value']['content']['text'])['body']
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    return (post)
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def format_post_file(post):
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    content = ''
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    content += str(json.dumps(post['frontmatter'], indent = 4))
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    content += '\n\n'
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    content += str(post['body'])
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    return content
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def define_post_filename(post):
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    folder = 'hugo/content/posts'
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    slug = str(post['frontmatter']['sequence'])
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    filetype = 'md'
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    return folder + '/' + slug + '.' + filetype
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def write_post_file(post):
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    os.makedirs(os.path.dirname(define_post_filename(post)), exist_ok=True)
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    with open(define_post_filename(post), 'w') as f:
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        f.write (format_post_file(post))
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def write_posts_from_user(ssb_userid):
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    posts = get_user_posts(ssb_userid)
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    for post in posts:
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        write_post_file(build_post_structure(post))
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def get_user_metadata(ssb_userid):
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    user_metadata_args = ['sbot', 'links',
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                          '--source', ssb_userid,
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                          '--dest', ssb_userid,
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                          '--rel', 'about',
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                          '--values']
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    json_metadata_args = ['json', '--deep-merge',
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                          '-c', 'this.value.content.type == "about"']
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    user_metadata_stream = subprocess.Popen(user_metadata_args,
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                                            stdout = subprocess.PIPE)
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    user_metadata_json = subprocess.check_output(json_metadata_args,
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                             stdin = user_metadata_stream.stdout)
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    user_metadata = json.loads(user_metadata_json)
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    return user_metadata
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def check_hugo_theme(theme, theme_clone_url):
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    hugo_theme_dir = os.path.join(scuttleblog_dir, 'hugo', 'themes', theme)
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    if not os.path.isdir(hugo_theme_dir):
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        subprocess.run(['git', 'submodule', 'add', '-f',
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                        theme_clone_url, hugo_theme_dir])
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def build_hugo_config(m):
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    hugo_config = {}
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    hugo_config['baseurl'] = conf.hugo_baseurl
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    hugo_config['theme'] = conf.hugo_theme
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    hugo_config['permalinks'] = {}
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    hugo_config['permalinks']['post'] = '/:filename/'
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    if 'name' in m['value']['content']:
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        hugo_config['title'] = m['value']['content']['name']
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    hugo_config['params'] = {}
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    if 'description' in m['value']['content']:
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        description = m['value']['content']['description']
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        hugo_config['params']['subtitle'] = description.replace('\n', ' ')
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    return (hugo_config)
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def write_hugo_config_from_user(ssb_userid):
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    metadata = get_user_metadata(ssb_userid)
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    for file in ['hugo/config.toml', 'hugo/config.yaml']:
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        if os.path.exists(file):
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            os.remove(file)
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    with open('hugo/config.json', 'w') as f:
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        f.write (json.dumps(build_hugo_config(metadata), indent = 4))
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def run_hugo():
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    subprocess.run(['hugo', '-s', 'hugo'])
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run_sbot()
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write_posts_from_user(conf.ssb_userid)
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write_hugo_config_from_user(conf.ssb_userid)
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check_hugo_theme(conf.hugo_theme, conf.hugo_theme_clone_url)
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run_hugo()
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