# # ⚠ Warning
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT
# LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
# NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
# WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
# SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#
# [🥭 Mango Markets](https://mango.markets/) support is available at:
#   [Docs](https://docs.mango.markets/)
#   [Discord](https://discord.gg/67jySBhxrg)
#   [Twitter](https://twitter.com/mangomarkets)
#   [Github](https://github.com/blockworks-foundation)
#   [Email](mailto:hello@blockworks.foundation)

import itertools
import typing

from decimal import Decimal
from pyserum.market import Market as PySerumMarket
from pyserum.market.orderbook import OrderBook as PySerumOrderBook
from solana.publickey import PublicKey

from .accountinfo import AccountInfo
from .context import Context
from .loadedmarket import LoadedMarket
from .lotsizeconverter import LotSizeConverter, RaisingLotSizeConverter
from .market import Market, InventorySource
from .openorders import OpenOrders
from .orders import Order
from .serumeventqueue import SerumEvent, SerumEventQueue
from .token import Token


# # 🥭 SerumMarket class
#
# This class encapsulates our knowledge of a Serum spot market.
#
class SerumMarket(LoadedMarket):
    def __init__(self, serum_program_address: PublicKey, address: PublicKey, base: Token, quote: Token, underlying_serum_market: PySerumMarket):
        super().__init__(serum_program_address, address, InventorySource.SPL_TOKENS, base, quote, RaisingLotSizeConverter())
        self.underlying_serum_market: PySerumMarket = underlying_serum_market
        base_lot_size: Decimal = Decimal(underlying_serum_market.state.base_lot_size())
        quote_lot_size: Decimal = Decimal(underlying_serum_market.state.quote_lot_size())
        self.lot_size_converter: LotSizeConverter = LotSizeConverter(base, base_lot_size, quote, quote_lot_size)

    def unprocessed_events(self, context: Context) -> typing.Sequence[SerumEvent]:
        event_queue: SerumEventQueue = SerumEventQueue.load(context, self.underlying_serum_market.state.event_queue())
        return event_queue.unprocessed_events

    def orders(self, context: Context) -> typing.Sequence[Order]:
        raw_market = self.underlying_serum_market
        [bids_info, asks_info] = AccountInfo.load_multiple(
            context, [raw_market.state.bids(), raw_market.state.asks()])
        bids_orderbook = PySerumOrderBook.from_bytes(raw_market.state, bids_info.data)
        asks_orderbook = PySerumOrderBook.from_bytes(raw_market.state, asks_info.data)

        return list(map(Order.from_serum_order, itertools.chain(bids_orderbook.orders(), asks_orderbook.orders())))

    def find_openorders_address_for_owner(self, context: Context, owner: PublicKey) -> typing.Optional[PublicKey]:
        all_open_orders = OpenOrders.load_for_market_and_owner(
            context, self.address, owner, context.serum_program_address, self.base.decimals, self.quote.decimals)
        if len(all_open_orders) == 0:
            return None
        return all_open_orders[0].address

    def __str__(self) -> str:
        return f"""« 𝚂𝚎𝚛𝚞𝚖𝙼𝚊𝚛𝚔𝚎𝚝 {self.symbol} {self.address} [{self.program_address}]
    Event Queue: {self.underlying_serum_market.state.event_queue()}
    Request Queue: {self.underlying_serum_market.state.request_queue()}
    Bids: {self.underlying_serum_market.state.bids()}
    Asks: {self.underlying_serum_market.state.asks()}
    Base: [lot size: {self.underlying_serum_market.state.base_lot_size()}] {self.underlying_serum_market.state.base_mint()}
    Quote: [lot size: {self.underlying_serum_market.state.quote_lot_size()}] {self.underlying_serum_market.state.quote_mint()}
»"""


# # 🥭 SerumMarketStub class
#
# This class holds information to load a `SerumMarket` object but doesn't automatically load it.
#
class SerumMarketStub(Market):
    def __init__(self, serum_program_address: PublicKey, address: PublicKey, base: Token, quote: Token):
        super().__init__(serum_program_address, address, InventorySource.SPL_TOKENS, base, quote, RaisingLotSizeConverter())

    def load(self, context: Context) -> SerumMarket:
        underlying_serum_market: PySerumMarket = PySerumMarket.load(
            context.client.compatible_client, self.address, context.serum_program_address)
        return SerumMarket(self.program_address, self.address, self.base, self.quote, underlying_serum_market)

    def __str__(self) -> str:
        return f"« 𝚂𝚎𝚛𝚞𝚖𝙼𝚊𝚛𝚔𝚎𝚝𝚂𝚝𝚞𝚋 {self.symbol} {self.address} [{self.program_address}] »"