import os
import io
import imaplib
import smtplib
import itertools
import pytest
import time


@pytest.fixture
def maildomain():
    return os.environ.get("CHATMAIL_DOMAIN", "c1.testrun.org")


@pytest.fixture
def imap(maildomain):
    return ImapConn(maildomain)


class ImapConn:
    def __init__(self, host):
        self.host = host

    def connect(self):
        print(f"imap-connect {self.host}")
        self.conn = imaplib.IMAP4_SSL(self.host)

    def login(self, user, password):
        print(f"imap-login {user!r} {password!r}")
        self.conn.login(user, password)


@pytest.fixture
def smtp(maildomain):
    return SmtpConn(maildomain)


class SmtpConn:
    def __init__(self, host):
        self.host = host

    def connect(self):
        print(f"smtp-connect {self.host}")
        self.conn = smtplib.SMTP_SSL(self.host)

    def login(self, user, password):
        print(f"smtp-login {user!r} {password!r}")
        self.conn.login(user, password)


@pytest.fixture
def gencreds(maildomain):
    prefix = str(time.time())
    count = itertools.count()

    def gen():
        while 1:
            num = next(count)
            yield f"user{prefix}_{num}@{maildomain}", f"password{prefix}_{num}"

    return lambda: next(gen())


#
# Delta Chat testplugin re-use
# use the cmfactory fixture to get chatmail instance accounts
#


class ChatmailTestProcess:
    """Provider for chatmail instance accounts as used by deltachat.testplugin.acfactory"""

    def __init__(self, pytestconfig, maildomain, gencreds):
        self.pytestconfig = pytestconfig
        self.maildomain = maildomain
        self.gencreds = gencreds
        self._addr2files = {}

    def get_liveconfig_producer(self):
        while 1:
            user, password = self.gencreds()
            config = {"addr": user, "mail_pw": password}
            yield config

    def cache_maybe_retrieve_configured_db_files(self, cache_addr, db_target_path):
        pass

    def cache_maybe_store_configured_db_files(self, acc):
        pass


@pytest.fixture
def cmfactory(request, maildomain, gencreds, tmpdir, data):
    # cloned from deltachat.testplugin.amfactory
    pytest.importorskip("deltachat")
    from deltachat.testplugin import ACFactory

    testproc = ChatmailTestProcess(request.config, maildomain, gencreds)
    am = ACFactory(request=request, tmpdir=tmpdir, testprocess=testproc, data=data)
    yield am
    if hasattr(request.node, "rep_call") and request.node.rep_call.failed:
        if testprocess.pytestconfig.getoption("--extra-info"):
            logfile = io.StringIO()
            am.dump_imap_summary(logfile=logfile)
            print(logfile.getvalue())
            # request.node.add_report_section("call", "imap-server-state", s)