from datetime import datetime, timedelta
import logging

from django.conf import settings
from django.db import transaction

from membershipworks.models import Member, Flag, Transaction
from membershipworks import MembershipWorks


logger = logging.getLogger(__name__)


def flags_for_member(csv_member, all_flags, folders):
    for flag in all_flags:
        if flag.type == "folder":
            if csv_member["Account ID"] in folders[flag.id]:
                yield flag
        else:
            if csv_member[flag.name] == flag.name:
                yield flag


def update_flags(mw_flags) -> list[Flag]:
    for typ, flags_of_type in mw_flags.items():
        for name, id in flags_of_type.items():
            flag = Flag(id=id, name=name, type=typ[:-1])
            flag.save()
            yield flag


def scrape_members(membershipworks: MembershipWorks):
    logger.info("Updating flags (labels, levels, and addons)")
    flags = list(update_flags(membershipworks._parse_flags()))

    logger.info("Getting folder membership")
    folders = {
        folder_id: membershipworks.get_member_ids([folder_name])
        for folder_name, folder_id in membershipworks._parse_flags()["folders"].items()
    }

    logger.info("Getting/Updating members...")
    members = membershipworks.get_all_members()
    for csv_member in members:
        for field_id, field in membershipworks._all_fields().items():
            # convert checkboxes to real booleans
            if field.get("typ") == 8 and field["lbl"] in csv_member:
                csv_member[field["lbl"]] = (
                    True if csv_member[field["lbl"]] == "Y" else False
                )

        # create/update member
        member = Member.from_csv_dict(csv_member)
        member.clean_fields()
        member.save()
        member.flags.set(flags_for_member(csv_member, flags, folders))


def scrape_transactions(membershipworks: MembershipWorks):
    now = datetime.now()
    start_date = datetime(2010, 1, 1)
    last_transaction = Transaction.objects.order_by("timestamp").last()
    if last_transaction is not None:
        # technically this has the potential to lose
        # transactions, but it should be incredibly unlikely
        start_date = last_transaction.timestamp + timedelta(seconds=1)

    logger.info(f"Getting/Updating transactions since {start_date}...")

    transactions_csv = membershipworks.get_transactions(start_date, now)
    transactions_json = membershipworks.get_transactions(start_date, now, json=True)
    # this is terrible, but as long as the dates are the same, should be fiiiine
    transactions = [{**j, **v} for j, v in zip(transactions_csv, transactions_json)]
    assert all(
        [
            t["Account ID"] == t.get("uid", "") and t["Payment ID"] == t.get("sid", "")
            for t in transactions
        ]
    )

    for csv_transaction in transactions:
        Transaction.from_csv_dict(csv_transaction).save()


@transaction.atomic
def scrape_membershipworks(*args, **options):
    membershipworks = MembershipWorks()
    membershipworks.login(
        settings.MEMBERSHIPWORKS_USERNAME, settings.MEMBERSHIPWORKS_PASSWORD
    )

    scrape_members(membershipworks)
    scrape_transactions(membershipworks)