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from dataclasses import field, dataclass
import logging
from typing import Literal, ClassVar
import datetime
import csv
from serenitas.ops.trade_dataclasses import Deal
from serenitas.utils.exchange import ExchangeMessage
from psycopg.errors import UniqueViolation
from exchangelib import HTMLBody

logger = logging.getLogger(__name__)


def get_file_status(s):
    is_processed, fname_short = s.rsplit("_", 1)
    is_processed = is_processed.rsplit("-")[1] == "PROCESSED"
    fname_short = fname_short.removesuffix(".csv")
    return is_processed, fname_short


def get_success_data(line):
    if line[2]:  # This is a trade
        identifier_type = "trade"
        serenitas_id = line[5]
        identifier = line[2]
    else:
        identifier_type = "instrument"
        serenitas_id = line[4]
        identifier = line[1]
    return identifier_type, serenitas_id, identifier


def get_failed_data(line):

    if len(line) == 1:
        return ("failed", line[-1])
    elif line[1]:  # Trade upload
        return ("trade", line[2])
    elif (
        not line[1] and line[2]
    ):  # Instrument upload, just mark as failed if it's a single error message
        return ("instrument", line[2])
    else:
        return ("failed", line[-1])


def instrument_table(instrument_id):
    if instrument_id.startswith("IRS"):
        return "citco_irs"
    elif instrument_id.startswith("SWPO_") or instrument_id.startswith("BNDO_"):
        return "citco_swaption"
    elif instrument_id.startswith("CDS_"):
        return "citco_tranche"
    elif instrument_id.startswith("TRS"):
        return "citco_trs"


@dataclass
class CitcoSubmission(Deal, deal_type=None, table_name="citco_submission"):
    fname: str = field()
    identifier_type: Literal["trade", "instrument"]
    identifier: str
    serenitas_id: str
    submit_date: datetime.datetime = field(default=datetime.datetime.now())

    @classmethod
    def from_citco_line(cls, line, fname):
        is_processed, fname_short = get_file_status(fname)
        if is_processed:
            identifier_type, serenitas_id, identifier = get_success_data(line)
        else:
            serenitas_id = "failed"
            (
                identifier_type,
                identifier,
            ) = get_failed_data(line)
        return cls(
            fname=fname_short,
            identifier_type=identifier_type,
            identifier=identifier,
            serenitas_id=serenitas_id,
        )

    @classmethod
    def process(cls, fh, fname):
        next(fh)  # skip header
        for row in csv.reader(fh):
            trade = cls.from_citco_line(row, fname)
            trade.stage()

    @classmethod
    def update_citco_tables(cls):
        with cls._conn.cursor() as c:
            for row in cls._insert_queue:
                if row[1] == "instrument":
                    serenitas_id = row[4]
                    c.execute(
                        f"UPDATE {instrument_table(serenitas_id)} SET committed=True AND status='Acknowledged' WHERE dealid=%s",
                        (serenitas_id,),
                    )

    @classmethod
    def commit(cls):
        if not cls._insert_queue:
            return
        with cls._conn.cursor() as c:
            try:
                c.executemany(cls._sql_insert, cls._insert_queue)
            except UniqueViolation as e:
                logger.warning(e)
                cls._conn.rollback()
            else:
                cls._conn.commit()
                cls.update_citco_tables()
                em = ExchangeMessage()
                em.send_email(
                    f"(CITCO) UPLOAD {'SUCCESS' if cls._insert_queue[0][3] != 'failed' else 'FAILED'}",
                    "\n".join(map(str, cls._insert_queue)),
                    (
                        "fyu@lmcg.com",
                        "ghorel@lmcg.com",
                        "etsui@lmcg.com",
                    ),
                )
            finally:
                cls._insert_queue.clear()


_recipients = {
    "ISOSEL": (
        "simon.oreilly@innocap.com",
        "margincalls@innocapglobal.com",
    ),
    "BOWDST": (
        "shkumar@sscinc.com",
        "hedgemark.lmcg.ops@sscinc.com",
        "hm-operations@bnymellon.com",
    ),
    "SERCGMAST": (
        "SERENITAS.FA@sscinc.com",
        "SERENITAS.ops@sscinc.com",
    ),
    "BAML_FCM": ("footc_margin_csr_amrs@bofa.com",),
}


@dataclass
class Payment:
    settle_date: datetime.date
    currency: str
    amount: float
    _insert_queue: ClassVar[list] = []

    @classmethod
    def stage_payment(cls, settlements):
        for row in settlements:
            cls._insert_queue.append(
                cls(row.settle_date, row.currency, row.payment_amount)
            )

    def to_email_format(self):
        return f"\t* {self.settle_date}: {self.amount:,.2f} {self.currency}"


class PaymentSettlement(Payment):
    @classmethod
    def email_innocap(cls, date):
        if not cls._insert_queue:
            return
        em = ExchangeMessage()
        em.send_email(
            f"Payment Settlements Bond/FX NT: ISOSEL {date}",
            "Good morning, \n\nWe have the following amounts settling in the next 4 calendar days at Northern Trust: (Positive Amounts = Receive, Negative Amounts=Pay)\n\n"
            + "\n".join(
                settlement.to_email_format() for settlement in cls._insert_queue
            ),
            to_recipients=_recipients["ISOSEL"],
            cc_recipients=("Selene-Ops@lmcg.com",),
        )


class GFSMonitor(Payment):
    @classmethod
    def email_globeop(cls, fund):
        if not cls._insert_queue:
            return
        em = ExchangeMessage()
        em.send_email(
            f"GFS Helper Strategy Issue: {fund}",
            "Good morning, \n\nWe noticed some cash in the GFS helper strategy that shouldn't be there:\n\n"
            + "\n".join(
                settlement.to_email_format() for settlement in cls._insert_queue
            ),
            to_recipients=_recipients[fund],
            cc_recipients=(
                "Bowdoin-Ops@LMCG.com" if fund == "BOWDST" else "NYOps@lmcg.com",
            ),
        )


class BamlFcmNotify:
    @classmethod
    def email_fcm(cls, date, data):
        em = ExchangeMessage()
        em.send_email(
            f"FX Details: 6MZ20049 {date}",
            HTMLBody(
                f"""
<html>
  <head>
    <style>
      table, th, td {{ border: 1px solid black;  border-collapse: collapse;}}
      th, td {{ padding: 5px; }}
    </style>
  </head>
  <body>
  Hello,<br><br>Please see below details for an FX Spot Trade we did with the desk today for account 6MZ20049. Please let me know if you need more information.<br><br>{data}
  </body>
</html>"""
            ),
            to_recipients=_recipients["BAML_FCM"],
            cc_recipients=("nyops@lmcg.com",),
        )