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137 lines
4.3 KiB
137 lines
4.3 KiB
# lumbung.space hashtag publishing bot
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# © 2021 roel roscam abbing agplv3
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# Makes Hugo posts out of hashtag feeds on Mastodon.
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# Requires an account on the Mastodon instance configured.
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# Currently does not do any thread recreation and only handles images
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import os
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import requests
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import shutil
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import jinja2
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from mastodon import Mastodon
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import config_hashtag_bot
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def login_mastodon_bot():
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mastodon = Mastodon(
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client_id = 'publishbot_clientcred.secret',
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api_base_url = config_hashtag_bot.instance
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)
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mastodon.log_in(
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config_hashtag_bot.email,
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config_hashtag_bot.password,
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to_file = 'publishbot_usercred.secret', scopes=['read']
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)
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return mastodon
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def create_frontmatter(post_metadata):
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"""
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Parse post metadata and return it as HUGO frontmatter
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"""
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frontmatter = ""
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return frontmatter
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def download_media(post_directory, media_attachments):
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"""
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Download media attached to posts. N.b. currently only images
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See: https://mastodonpy.readthedocs.io/en/stable/#media-dicts
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"""
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for item in media_attachments:
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if item['type'] == 'image':
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image = localize_media_url(item['url'])
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#TODO check whether this needs to handle delete & redraft with different images
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if not os.path.exists(os.path.join(post_directory, image)):
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#download image
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response = requests.get(item['url'], stream=True)
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with open(os.path.join(post_directory, image), 'wb') as img_file:
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shutil.copyfileobj(response.raw, img_file)
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print('Downloaded cover image', image)
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def create_post(post_directory, post_metadata):
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"""
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Create Hugo posts based on Toots/posts retuned in timeline.
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See: https://mastodonpy.readthedocs.io/en/stable/#toot-dicts
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"""
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if not os.path.exists(post_directory):
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os.mkdir(post_directory)
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with open(os.path.join(post_directory,'index.html'),'w') as f:
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post = template.render(post_metadata=post_metadata)
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f.write(post)
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download_media(post_directory, post_metadata['media_attachments'])
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def localize_media_url(url):
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"""
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Returns the filename, used also as custom jinja filter
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"""
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return url.split('/')[-1]
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def filter_mastodon_urls(content):
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"""
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Filters out Mastodon generated URLS for tags
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e.g. <a href="https://social.lumbung.space/tags/jalankita" class="mention hashtag" rel="tag">
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Used also as custom jinja filter
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"""
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#TODO
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return content
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mastodon = login_mastodon_bot()
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output_dir = config_hashtag_bot.output_dir
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env = jinja2.Environment(
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loader=jinja2.FileSystemLoader(os.path.curdir)
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)
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env.filters['localize_media_url'] = localize_media_url
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env.filters['filter_mastodon_urls'] = filter_mastodon_urls
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template = env.get_template('post_template.md')
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if not os.path.exists(output_dir):
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os.mkdir(output_dir)
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for hashtag in config_hashtag_bot.hashtags:
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hashtag_dir = os.path.join(output_dir, hashtag)
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if not os.path.exists(hashtag_dir):
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os.mkdir(hashtag_dir)
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existing_posts = os.listdir(hashtag_dir) #list all existing posts
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timeline = mastodon.timeline_hashtag(hashtag, local=True, only_media=True) #returns max 20 queries and only with media
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timeline = mastodon.fetch_remaining(timeline) #returns all the rest n.b. can take a while because of rate limit
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for post_metadata in timeline:
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post_dir = os.path.join(hashtag_dir, str(post_metadata['id']))
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#if there is a post in the feed we dont already have locally, make it
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if str(post_metadata['id']) not in existing_posts:
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if not post_metadata['local_only']: #if you get an error here then you are using vanilla Mastodon, this is a Hometown or Glitch only feature
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create_post(post_dir, post_metadata)
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# if we already have the post do nothing, possibly update
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elif str(post_metadata['id']) in existing_posts:
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#update_post(post_dir, post_metadata)
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existing_posts.remove(str(post_metadata['id'])) # create list of posts which have not been returned in the feed
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for post in existing_posts:
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print('deleted', post) #rm posts that exist but are no longer returned in feed
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shutil.rmtree(os.path.join(hashtag_dir,post))
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