__filename__ = "socnet.py"
__author__ = "Bob Mottram"
__license__ = "AGPL3+"
__version__ = "1.2.0"
__maintainer__ = "Bob Mottram"
__email__ = "bob@libreserver.org"
__status__ = "Production"
__module_group__ = "Moderation"

from session import createSession
from webfinger import webfingerHandle
from posts import getPersonBox
from posts import getPostDomains
from utils import get_full_domain


def instancesGraph(base_dir: str, handles: str,
                   proxy_type: str,
                   port: int, http_prefix: str,
                   debug: bool, project_version: str,
                   system_language: str, signing_priv_key_pem: str) -> str:
    """ Returns a dot graph of federating instances
    based upon a few sample handles.
    The handles argument should contain a comma separated list
    of handles on different instances
    """
    dotGraphStr = 'digraph instances {\n'
    if ',' not in handles:
        return dotGraphStr + '}\n'
    session = createSession(proxy_type)
    if not session:
        return dotGraphStr + '}\n'

    person_cache = {}
    cached_webfingers = {}
    federation_list = []
    max_mentions = 99
    max_emoji = 99
    maxAttachments = 5

    personHandles = handles.split(',')
    for handle in personHandles:
        handle = handle.strip()
        if handle.startswith('@'):
            handle = handle[1:]
        if '@' not in handle:
            continue

        nickname = handle.split('@')[0]
        domain = handle.split('@')[1]

        domain_full = get_full_domain(domain, port)
        handle = http_prefix + "://" + domain_full + "/@" + nickname
        wfRequest = \
            webfingerHandle(session, handle, http_prefix,
                            cached_webfingers,
                            domain, project_version, debug, False,
                            signing_priv_key_pem)
        if not wfRequest:
            return dotGraphStr + '}\n'
        if not isinstance(wfRequest, dict):
            print('Webfinger for ' + handle + ' did not return a dict. ' +
                  str(wfRequest))
            return dotGraphStr + '}\n'

        originDomain = None
        (personUrl, pubKeyId, pubKey, personId, shaedInbox, avatarUrl,
         displayName, _) = getPersonBox(signing_priv_key_pem,
                                        originDomain,
                                        base_dir, session, wfRequest,
                                        person_cache,
                                        project_version, http_prefix,
                                        nickname, domain, 'outbox',
                                        27261)
        wordFrequency = {}
        postDomains = \
            getPostDomains(session, personUrl, 64, max_mentions, max_emoji,
                           maxAttachments, federation_list,
                           person_cache, debug,
                           project_version, http_prefix, domain,
                           wordFrequency, [], system_language,
                           signing_priv_key_pem)
        postDomains.sort()
        for fedDomain in postDomains:
            dotLineStr = '    "' + domain + '" -> "' + fedDomain + '";\n'
            if dotLineStr not in dotGraphStr:
                dotGraphStr += dotLineStr
    return dotGraphStr + '}\n'