epicyon/metadata.py

__filename__ = "metadata.py"
__author__ = "Bob Mottram"
__license__ = "AGPL3+"
__version__ = "1.4.0"
__maintainer__ = "Bob Mottram"
__email__ = "bob@libreserver.org"
__status__ = "Production"
__module_group__ = "Metadata"

import os
from utils import no_of_active_accounts_monthly
from utils import no_of_accounts
from utils import get_status_count


def meta_data_node_info(base_dir: str,
                        about_url: str,
                        terms_of_service_url: str,
                        registration: bool, version: str,
                        show_accounts: bool) -> {}:
    """ /nodeinfo/2.1 endpoint
    Also see https://socialhub.activitypub.rocks/t/
    https://github.com/jhass/nodeinfo/blob/main/schemas/2.1/example.json
    fep-f1d5-nodeinfo-in-fediverse-software/1190/4

    Note that there are security considerations with this. If an adversary
    sees a lot of accounts and "local" posts then the instance may be
    considered a higher priority target.
    Also exposure of the version number and number of accounts could be
    sensitive
    """
    if show_accounts:
        active_accounts = no_of_accounts(base_dir)
        active_accounts_monthly = no_of_active_accounts_monthly(base_dir, 1)
        active_accounts_half_year = no_of_active_accounts_monthly(base_dir, 6)
        local_posts = get_status_count(base_dir)
    else:
        active_accounts = 1
        active_accounts_monthly = 1
        active_accounts_half_year = 1
        local_posts = 1

    nodeinfo = {
        'openRegistrations': registration,
        'protocols': ['activitypub'],
        'services': {
            'outbound': ['rss2.0']
        },
        'software': {
            'name': 'epicyon',
            'repository': 'https://gitlab.com/bashrc2/epicyon',
            'homepage': 'https://gitlab.com/bashrc2/epicyon',
            'version': version
        },
        'documents': {
            'about': about_url,
            'terms': terms_of_service_url
        },
        'usage': {
            'localPosts': local_posts,
            'users': {
                'activeHalfyear': active_accounts_half_year,
                'activeMonth': active_accounts_monthly,
                'total': active_accounts
            }
        },
        'metadata': {
            'chat_enabled': False,
            'postFormats': ['text/plain', 'text/html', 'text/markdown'],
            'FEPs': ['c648', '521a', '8fcf', '4ccd', 'c118', 'fffd',
                     '1970', '0837', '7628']
        },
        'version': '2.1'
    }
    return nodeinfo


def metadata_custom_emoji(base_dir: str,
                          http_prefix: str, domain_full: str) -> {}:
    """Returns the custom emoji
    Endpoint /api/v1/custom_emojis
    See https://docs.joinmastodon.org/methods/instance/custom_emojis
    """
    result = []
    emojis_url = http_prefix + '://' + domain_full + '/emoji'
    for _, _, files in os.walk(base_dir + '/emoji'):
        for fname in files:
            if len(fname) < 3:
                continue
            if fname[0].isdigit() or fname[1].isdigit():
                continue
            if not fname.endswith('.png'):
                continue
            url = os.path.join(emojis_url, fname)
            result.append({
                "shortcode": fname.replace('.png', ''),
                "url": url,
                "static_url": url,
                "visible_in_picker": True
            })
        break
    return result