#!/usr/bin/env python3
# ~~~~~==============   HOW TO RUN   ==============~~~~~
# 1) Configure things in CONFIGURATION section
# 2) Change permissions: chmod +x bot.py
# 3) Run in loop: while true; do ./bot.py --test prod-like; sleep 1; done

import argparse
from collections import deque
from enum import Enum
import time
import socket
import json
from state import StateManager
from order import OrderManager

# ~~~~~============== CONFIGURATION  ==============~~~~~
team_name = "HanyangFloorFunction"


def main():
    args = parse_arguments()
    exchange = ExchangeConnection(args=args)

    hello_message = exchange.read_message()
    print("First message from exchange:", hello_message)

    BOND_FAIR_VALUE     = 1000
    BOND_ORDER_SIZE     = 60
    XLF_CONVERSION_FEE  = 100
    XLF_MIN_PROFIT      = 5
    VALE_CONVERSION_FEE = 10
    VALE_MIN_PROFIT     = 1
    VALE_ARB_SIZE       = 10
    REFRESH_INTERVAL    = 5.0

    xlf_state     = "IDLE"
    xlf_pending   = {}
    xlf_direction = None
    xlf_arb_size  = 0
    xlf_convert_oid = None

    vale_state     = "IDLE"
    vale_pending   = {}
    vale_direction = None
    vale_arb_size  = 0
    vale_convert_oid = None

    state         = StateManager()
    om            = OrderManager(exchange)
    market_open   = False
    active_orders = {}

    last_refresh = time.time()

    for sym_info in hello_message["symbols"]:
        sym = sym_info["symbol"]
        pos = sym_info["position"]
        if sym in om.positions:
            om.positions[sym]        = pos
            om.future_positions[sym] = pos
    print(f"  초기 포지션 로드: {om.positions}")

    def next_id():
        return om.next_order()

    def cancel_bond_sell_orders():
        for oid in list(active_orders.keys()):
            order_info = active_orders[oid]
            if order_info["dir"] == Dir.SELL:
                size = order_info.get("size", 0)
                om.future_positions["BOND"] += size
                om.cancel(oid)
                active_orders.pop(oid, None)

    def cancel_all_bond_orders():
        for oid in list(active_orders.keys()):
            order_info = active_orders[oid]
            size = order_info.get("size", 0)
            if order_info["dir"] == Dir.BUY:
                om.future_positions["BOND"] -= size
            else:
                om.future_positions["BOND"] += size
            om.cancel(oid)
            active_orders.pop(oid, None)

    def place_bond_orders():
        if not market_open:
            return
        cancel_all_bond_orders()

        buy_price  = BOND_FAIR_VALUE - 1
        sell_price = BOND_FAIR_VALUE + 1
        position   = om.positions["BOND"]
        base_size  = BOND_ORDER_SIZE
        adjustment = abs(position) // 5

        if position < 0:
            buy_size  = min(base_size + adjustment, 100 - position)
            sell_size = max(base_size - adjustment, 1)
        elif position > 0:
            buy_size  = max(base_size - adjustment, 1)
            sell_size = min(base_size + adjustment, 100 + position)
        else:
            buy_size  = base_size
            sell_size = base_size

        buy_size  = max(0, min(buy_size,  100 - position))
        sell_size = max(0, min(sell_size, 100 + position))

        if buy_size > 0:
            bid = next_id()
            exchange.send_add_message(order_id=bid, symbol="BOND", dir=Dir.BUY, price=buy_price, size=buy_size)
            om.future_positions["BOND"] += buy_size
            active_orders[bid] = {"dir": Dir.BUY, "price": buy_price, "size": buy_size}

        if sell_size > 0:
            ask = next_id()
            exchange.send_add_message(order_id=ask, symbol="BOND", dir=Dir.SELL, price=sell_price, size=sell_size)
            om.future_positions["BOND"] -= sell_size
            active_orders[ask] = {"dir": Dir.SELL, "price": sell_price, "size": sell_size}

        print(f"  BOND 주문 → 매수:{buy_price} x{buy_size}, 매도:{sell_price} x{sell_size}, 포지션:{position}")

    def try_xlf_arb():
        nonlocal xlf_state, xlf_direction, xlf_pending, xlf_arb_size, xlf_convert_oid
        if not market_open or xlf_state != "IDLE":
            return

        bond_ask = state.ask_prices["BOND"]
        gs_ask   = state.ask_prices["GS"]
        ms_ask   = state.ask_prices["MS"]
        wfc_ask  = state.ask_prices["WFC"]
        xlf_bid  = state.bid_prices["XLF"]
        bond_bid = state.bid_prices["BOND"]
        gs_bid   = state.bid_prices["GS"]
        ms_bid   = state.bid_prices["MS"]
        wfc_bid  = state.bid_prices["WFC"]
        xlf_ask  = state.ask_prices["XLF"]

        if None in [bond_ask, gs_ask, ms_ask, wfc_ask, xlf_bid, bond_bid, gs_bid, ms_bid, wfc_bid, xlf_ask]:
            return

        basket_ask = bond_ask*3 + gs_ask*2 + ms_ask*3 + wfc_ask*2
        basket_bid = bond_bid*3 + gs_bid*2 + ms_bid*3 + wfc_bid*2

        profit1 = xlf_bid * 10 - basket_ask - XLF_CONVERSION_FEE
        if profit1 > XLF_MIN_PROFIT and om.check_pos_limit("XLF"):
            print(f"  XLF 차익(바스켓→XLF) 시작, 예상수익:{profit1}")
            cancel_bond_sell_orders()
            xlf_state = "BUYING_BASKET"; xlf_direction = "BASKET_TO_XLF"; xlf_arb_size = 10
            xlf_pending.clear()
            for sym, qty in [("BOND", 3), ("GS", 2), ("MS", 3), ("WFC", 2)]:
                oid = next_id()
                exchange.send_add_message(oid, sym, Dir.BUY, state.ask_prices[sym], qty)
                xlf_pending[oid] = qty
            return

        profit2 = basket_bid - xlf_ask * 10 - XLF_CONVERSION_FEE
        if profit2 > XLF_MIN_PROFIT and om.check_pos_limit("XLF"):
            print(f"  XLF 차익(XLF→바스켓) 시작, 예상수익:{profit2}")
            cancel_all_bond_orders()
            xlf_state = "BUYING_XLF"; xlf_direction = "XLF_TO_BASKET"; xlf_arb_size = 10
            xlf_pending.clear()
            oid = next_id()
            exchange.send_add_message(oid, "XLF", Dir.BUY, xlf_ask, 10)
            xlf_pending[oid] = 10

    def handle_xlf_fill(order_id, symbol, dir_, qty):
        nonlocal xlf_state, xlf_pending, xlf_convert_oid
        if order_id not in xlf_pending:
            return
        xlf_pending[order_id] -= qty
        if xlf_pending[order_id] <= 0:
            del xlf_pending[order_id]
        if xlf_state == "BUYING_BASKET" and not xlf_pending:
            print("  바스켓 매수 완료 → XLF 변환 시작")
            xlf_state = "CONVERTING"
            xlf_convert_oid = next_id()
            exchange.send_convert_message(xlf_convert_oid, "XLF", Dir.BUY, xlf_arb_size)
        elif xlf_state == "BUYING_XLF" and not xlf_pending:
            print("  XLF 매수 완료 → 바스켓 변환 시작")
            xlf_state = "CONVERTING"
            xlf_convert_oid = next_id()
            exchange.send_convert_message(xlf_convert_oid, "XLF", Dir.SELL, xlf_arb_size)

    def try_vale_arb():
        nonlocal vale_state, vale_direction, vale_pending, vale_arb_size, vale_convert_oid
        if not market_open or vale_state != "IDLE":
            return

        vale_bid  = state.bid_prices["VALE"]
        vale_ask  = state.ask_prices["VALE"]
        valbz_bid = state.bid_prices["VALBZ"]
        valbz_ask = state.ask_prices["VALBZ"]

        if None in [vale_bid, vale_ask, valbz_bid, valbz_ask]:
            return

        valbz_pos = om.positions["VALBZ"]
        vale_pos  = om.positions["VALE"]

        profit1   = vale_bid - valbz_ask - VALE_CONVERSION_FEE
        arb_size1 = min(VALE_ARB_SIZE, 10 - valbz_pos)
        if profit1 > VALE_MIN_PROFIT and arb_size1 > 0:
            print(f"  VALE 차익(VALBZ→VALE) 시작, 예상수익:{profit1 * arb_size1}, size:{arb_size1}")
            vale_state = "BUYING_VALBZ"; vale_direction = "VALBZ_TO_VALE"; vale_arb_size = arb_size1
            vale_pending.clear()
            oid = next_id()
            exchange.send_add_message(oid, "VALBZ", Dir.BUY, valbz_ask, arb_size1)
            vale_pending[oid] = arb_size1
            return

        profit2   = valbz_bid - vale_ask - VALE_CONVERSION_FEE
        arb_size2 = min(VALE_ARB_SIZE, 10 - vale_pos)
        if profit2 > VALE_MIN_PROFIT and arb_size2 > 0:
            print(f"  VALE 차익(VALE→VALBZ) 시작, 예상수익:{profit2 * arb_size2}, size:{arb_size2}")
            vale_state = "BUYING_VALE"; vale_direction = "VALE_TO_VALBZ"; vale_arb_size = arb_size2
            vale_pending.clear()
            oid = next_id()
            exchange.send_add_message(oid, "VALE", Dir.BUY, vale_ask, arb_size2)
            vale_pending[oid] = arb_size2

    def handle_vale_fill(order_id, symbol, dir_, qty):
        nonlocal vale_state, vale_pending, vale_convert_oid
        if order_id not in vale_pending:
            return
        vale_pending[order_id] -= qty
        if vale_pending[order_id] <= 0:
            del vale_pending[order_id]
        if vale_state == "BUYING_VALBZ" and not vale_pending:
            print("  VALBZ 매수 완료 → VALE 변환 시작")
            vale_state = "CONVERTING"
            vale_convert_oid = next_id()
            exchange.send_convert_message(vale_convert_oid, "VALE", Dir.BUY, vale_arb_size)
        elif vale_state == "BUYING_VALE" and not vale_pending:
            print("  VALE 매수 완료 → VALBZ 변환 시작")
            vale_state = "CONVERTING"
            vale_convert_oid = next_id()
            exchange.send_convert_message(vale_convert_oid, "VALE", Dir.SELL, vale_arb_size)

    vale_last_print_time = time.time()

    while True:
        message = exchange.read_message()

        if message["type"] == "close":
            print("The round has ended")
            break

        elif message["type"] == "open":
            print("Market opened:", message)
            market_open = True
            place_bond_orders()

        elif message["type"] == "error":
            print(message)

        elif message["type"] == "reject":
            print(message)
            oid = message.get("order_id")
            active_orders.pop(oid, None)
            if oid in xlf_pending:
                print("  XLF 주문 reject → IDLE 복귀")
                xlf_state = "IDLE"; xlf_pending.clear(); xlf_direction = None
                place_bond_orders()
            if oid in vale_pending:
                print("  VALE 주문 reject → IDLE 복귀")
                vale_state = "IDLE"; vale_pending.clear(); vale_direction = None

        elif message["type"] == "ack":
            ack_oid = message.get("order_id")

            if xlf_state == "CONVERTING" and ack_oid == xlf_convert_oid:
                print("  XLF 변환 완료 → 매도 시작")
                if xlf_direction == "BASKET_TO_XLF":
                    om.positions["BOND"] -= 3; om.positions["GS"] -= 2
                    om.positions["MS"]   -= 3; om.positions["WFC"] -= 2
                    om.positions["XLF"]  += xlf_arb_size
                    om.future_positions["BOND"] -= 3; om.future_positions["GS"] -= 2
                    om.future_positions["MS"]   -= 3; om.future_positions["WFC"] -= 2
                    om.future_positions["XLF"]  += xlf_arb_size
                    xlf_state = "SELLING_XLF"
                    oid = next_id()
                    exchange.send_add_message(oid, "XLF", Dir.SELL, state.bid_prices["XLF"], xlf_arb_size)
                    xlf_pending[oid] = xlf_arb_size
                elif xlf_direction == "XLF_TO_BASKET":
                    om.positions["XLF"]  -= xlf_arb_size
                    om.positions["BOND"] += 3; om.positions["GS"] += 2
                    om.positions["MS"]   += 3; om.positions["WFC"] += 2
                    om.future_positions["XLF"]  -= xlf_arb_size
                    om.future_positions["BOND"] += 3; om.future_positions["GS"] += 2
                    om.future_positions["MS"]   += 3; om.future_positions["WFC"] += 2
                    xlf_state = "SELLING_BASKET"
                    for sym, qty in [("BOND", 3), ("GS", 2), ("MS", 3), ("WFC", 2)]:
                        oid = next_id()
                        exchange.send_add_message(oid, sym, Dir.SELL, state.bid_prices[sym], qty)
                        xlf_pending[oid] = qty

            elif vale_state == "CONVERTING" and ack_oid == vale_convert_oid:
                print("  VALE 변환 완료 → 매도 시작")
                if vale_direction == "VALBZ_TO_VALE":
                    om.positions["VALBZ"]       -= vale_arb_size; om.positions["VALE"]  += vale_arb_size
                    om.future_positions["VALBZ"] -= vale_arb_size; om.future_positions["VALE"] += vale_arb_size
                    vale_state = "SELLING_VALE"
                    oid = next_id()
                    exchange.send_add_message(oid, "VALE", Dir.SELL, state.bid_prices["VALE"], vale_arb_size)
                    vale_pending[oid] = vale_arb_size
                elif vale_direction == "VALE_TO_VALBZ":
                    om.positions["VALE"]         -= vale_arb_size; om.positions["VALBZ"] += vale_arb_size
                    om.future_positions["VALE"]  -= vale_arb_size; om.future_positions["VALBZ"] += vale_arb_size
                    vale_state = "SELLING_VALBZ"
                    oid = next_id()
                    exchange.send_add_message(oid, "VALBZ", Dir.SELL, state.bid_prices["VALBZ"], vale_arb_size)
                    vale_pending[oid] = vale_arb_size

        elif message["type"] == "fill":
            print(message)
            qty  = message["size"]
            sym  = message["symbol"]
            dir_ = message["dir"]
            oid  = message["order_id"]

            if dir_ == Dir.BUY:
                om.update_position(sym, oid, qty)
            else:
                om.update_position(sym, oid, -qty)

            print(f"  포지션 → {om.positions}")

            if sym == "BOND" and oid in active_orders:
                active_orders.pop(oid, None)
                place_bond_orders()

            handle_xlf_fill(oid, sym, dir_, qty)
            if xlf_state in ("SELLING_XLF", "SELLING_BASKET") and not xlf_pending:
                print("  XLF 차익거래 완료 → IDLE 복귀")
                xlf_state = "IDLE"; xlf_direction = None
                place_bond_orders()
                try_xlf_arb()

            handle_vale_fill(oid, sym, dir_, qty)
            if vale_state in ("SELLING_VALE", "SELLING_VALBZ") and not vale_pending:
                print("  VALE 차익거래 완료 → IDLE 복귀")
                vale_state = "IDLE"; vale_direction = None
                try_vale_arb()

        elif message["type"] == "book":
            sym = message["symbol"]
            state.update_bid_ask_price(
                sym,
                message["buy"][0][0]  if message["buy"]  else None,
                message["sell"][0][0] if message["sell"] else None
            )

            if sym == "VALE":
                now = time.time()
                if now > vale_last_print_time + 1:
                    vale_last_print_time = now
                    print({"vale_bid_price": state.bid_prices["VALE"], "vale_ask_price": state.ask_prices["VALE"]})

            if sym in ["BOND", "GS", "MS", "WFC", "XLF"]:
                try_xlf_arb()
            if sym in ["VALE", "VALBZ"]:
                try_vale_arb()

            now = time.time()
            if now - last_refresh > REFRESH_INTERVAL:
                last_refresh = now
                place_bond_orders()


# ~~~~~============== PROVIDED CODE ==============~~~~~

class Dir(str, Enum):
    BUY = "BUY"
    SELL = "SELL"


class ExchangeConnection:
    def __init__(self, args):
        self.message_timestamps = deque(maxlen=500)
        self.exchange_hostname = args.exchange_hostname
        self.port = args.port
        exchange_socket = self._connect(add_socket_timeout=args.add_socket_timeout)
        self.reader = exchange_socket.makefile("r", 1)
        self.writer = exchange_socket
        self._write_message({"type": "hello", "team": team_name.upper()})

    def read_message(self):
        message = json.loads(self.reader.readline())
        if "dir" in message:
            message["dir"] = Dir(message["dir"])
        return message

    def send_add_message(self, order_id: int, symbol: str, dir: Dir, price: int, size: int):
        self._write_message({"type": "add", "order_id": order_id, "symbol": symbol,
                             "dir": dir, "price": price, "size": size, "tif": "DAY"})

    def send_convert_message(self, order_id: int, symbol: str, dir: Dir, size: int):
        self._write_message({"type": "convert", "order_id": order_id, "symbol": symbol, "dir": dir, "size": size})

    def send_cancel_message(self, order_id: int):
        self._write_message({"type": "cancel", "order_id": order_id})

    def _connect(self, add_socket_timeout):
        s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
        if add_socket_timeout:
            s.settimeout(5)
        s.connect((self.exchange_hostname, self.port))
        return s

    def _write_message(self, message):
        what_to_write = json.dumps(message)
        if not what_to_write.endswith("\n"):
            what_to_write = what_to_write + "\n"
        length_to_send = len(what_to_write)
        total_sent = 0
        while total_sent < length_to_send:
            sent_this_time = self.writer.send(what_to_write[total_sent:].encode("utf-8"))
            if sent_this_time == 0:
                raise Exception("Unable to send data to exchange")
            total_sent += sent_this_time
        now = time.time()
        self.message_timestamps.append(now)
        if len(self.message_timestamps) == self.message_timestamps.maxlen and self.message_timestamps[0] > (now - 1):
            print("WARNING: You are sending messages too frequently. The exchange will start ignoring your messages. Make sure you are not sending a message in response to every exchange message.")


def parse_arguments():
    test_exchange_port_offsets = {"prod-like": 0, "slower": 1, "empty": 2}
    parser = argparse.ArgumentParser(description="Trade on an ETC exchange!")
    exchange_address_group = parser.add_mutually_exclusive_group(required=True)
    exchange_address_group.add_argument("--production", action="store_true")
    exchange_address_group.add_argument("--test", type=str, choices=test_exchange_port_offsets.keys())
    exchange_address_group.add_argument("--specific-address", type=str, metavar="HOST:PORT", help=argparse.SUPPRESS)
    args = parser.parse_args()
    args.add_socket_timeout = True
    if args.production:
        args.exchange_hostname = "production"; args.port = 25000
    elif args.test:
        args.exchange_hostname = "test-exch-" + team_name
        args.port = 22000 + test_exchange_port_offsets[args.test]
        if args.test == "empty":
            args.add_socket_timeout = False
    elif args.specific_address:
        args.exchange_hostname, port = args.specific_address.split(":")
        args.port = int(port)
    return args


if __name__ == "__main__":
    assert team_name != "REPLAC" + "EME"
    main()