robosats/api/views.py

from datetime import datetime, timedelta
from pathlib import Path

from decouple import config
from django.conf import settings
from django.contrib.auth.models import User
from django.db.models import Q, Sum
from django.utils import timezone
from drf_spectacular.utils import extend_schema
from rest_framework import status, viewsets
from rest_framework.authentication import TokenAuthentication
from rest_framework.generics import CreateAPIView, ListAPIView
from rest_framework.permissions import IsAuthenticated
from rest_framework.response import Response
from rest_framework.views import APIView

from api.logics import Logics
from api.models import Currency, LNPayment, MarketTick, OnchainPayment, Order
from api.notifications import Telegram
from api.oas_schemas import (
    BookViewSchema,
    HistoricalViewSchema,
    InfoViewSchema,
    LimitViewSchema,
    MakerViewSchema,
    OrderViewSchema,
    PriceViewSchema,
    RewardViewSchema,
    RobotViewSchema,
    StealthViewSchema,
    TickViewSchema,
)
from api.serializers import (
    ClaimRewardSerializer,
    InfoSerializer,
    ListOrderSerializer,
    MakeOrderSerializer,
    OrderPublicSerializer,
    PriceSerializer,
    StealthSerializer,
    TickSerializer,
    UpdateOrderSerializer,
)
from api.utils import (
    compute_avg_premium,
    compute_premium_percentile,
    get_cln_version,
    get_lnd_version,
    get_robosats_commit,
    verify_signed_message,
)
from chat.models import Message
from control.models import AccountingDay, BalanceLog

EXP_MAKER_BOND_INVOICE = int(config("EXP_MAKER_BOND_INVOICE"))
RETRY_TIME = int(config("RETRY_TIME"))

avatar_path = Path(settings.AVATAR_ROOT)
avatar_path.mkdir(parents=True, exist_ok=True)


class MakerView(CreateAPIView):
    serializer_class = MakeOrderSerializer
    authentication_classes = [TokenAuthentication]
    permission_classes = [IsAuthenticated]

    @extend_schema(**MakerViewSchema.post)
    def post(self, request):
        serializer = self.serializer_class(data=request.data)

        if not request.user.is_authenticated:
            return Response(
                {"bad_request": "Woops! It seems you do not have a robot avatar"},
                status.HTTP_400_BAD_REQUEST,
            )

        if not serializer.is_valid():
            return Response(status=status.HTTP_400_BAD_REQUEST)

        # In case it gets overwhelming. Limit the number of public orders.
        if Order.objects.filter(status=Order.Status.PUB).count() >= int(
            config("MAX_PUBLIC_ORDERS")
        ):
            return Response(
                {
                    "bad_request": f"The RoboSats {config('COORDINATOR_ALIAS', cast=str, default='NoAlias')} coordinator book is at full capacity! Current limit is {config('MAX_PUBLIC_ORDERS', cast=str)} orders"
                },
                status.HTTP_400_BAD_REQUEST,
            )
        # Only allow users who are not already engaged in an order
        valid, context, _ = Logics.validate_already_maker_or_taker(request.user)
        if not valid:
            return Response(context, status.HTTP_409_CONFLICT)

        type = serializer.data.get("type")
        currency = serializer.data.get("currency")
        amount = serializer.data.get("amount")
        has_range = serializer.data.get("has_range")
        min_amount = serializer.data.get("min_amount")
        max_amount = serializer.data.get("max_amount")
        payment_method = serializer.data.get("payment_method")
        premium = serializer.data.get("premium")
        satoshis = serializer.data.get("satoshis")
        is_explicit = serializer.data.get("is_explicit")
        public_duration = serializer.data.get("public_duration")
        escrow_duration = serializer.data.get("escrow_duration")
        bond_size = serializer.data.get("bond_size")
        latitude = serializer.data.get("latitude")
        longitude = serializer.data.get("longitude")

        # Optional params
        if public_duration is None:
            public_duration = 60 * 60 * settings.DEFAULT_PUBLIC_ORDER_DURATION
        if escrow_duration is None:
            escrow_duration = 60 * settings.INVOICE_AND_ESCROW_DURATION
        if bond_size is None:
            bond_size = settings.DEFAULT_BOND_SIZE
        if has_range is None:
            has_range = False

        # An order can either have an amount or a range (min_amount and max_amount)
        if has_range:
            amount = None
        else:
            min_amount = None
            max_amount = None

        # Either amount or min_max has to be specified.
        if has_range and (min_amount is None or max_amount is None):
            return Response(
                {
                    "bad_request": "You must specify min_amount and max_amount for a range order"
                },
                status.HTTP_400_BAD_REQUEST,
            )
        elif not has_range and amount is None:
            return Response(
                {"bad_request": "You must specify an order amount"},
                status.HTTP_400_BAD_REQUEST,
            )

        # Creates a new order
        order = Order(
            type=type,
            currency=Currency.objects.get(id=currency),
            amount=amount,
            has_range=has_range,
            min_amount=min_amount,
            max_amount=max_amount,
            payment_method=payment_method,
            premium=premium,
            satoshis=satoshis,
            is_explicit=is_explicit,
            expires_at=timezone.now() + timedelta(seconds=EXP_MAKER_BOND_INVOICE),
            maker=request.user,
            public_duration=public_duration,
            escrow_duration=escrow_duration,
            bond_size=bond_size,
            latitude=latitude,
            longitude=longitude,
        )

        order.last_satoshis = order.t0_satoshis = Logics.satoshis_now(order)

        valid, context = Logics.validate_order_size(order)
        if not valid:
            return Response(context, status.HTTP_400_BAD_REQUEST)

        order.save()
        order.log(
            f"Order({order.id},{order}) created by Robot({request.user.robot.id},{request.user})"
        )
        return Response(ListOrderSerializer(order).data, status=status.HTTP_201_CREATED)


class OrderView(viewsets.ViewSet):
    authentication_classes = [TokenAuthentication]
    permission_classes = [IsAuthenticated]
    serializer_class = UpdateOrderSerializer
    lookup_url_kwarg = "order_id"

    @extend_schema(**OrderViewSchema.get)
    def get(self, request, format=None):
        """
        Full trade pipeline takes place while looking/refreshing the order page.
        """
        order_id = request.GET.get(self.lookup_url_kwarg)

        if not request.user.is_authenticated:
            return Response(
                {
                    "bad_request": "You must have a robot avatar to see the order details"
                },
                status=status.HTTP_400_BAD_REQUEST,
            )

        if order_id is None:
            return Response(
                {"bad_request": "Order ID parameter not found in request"},
                status=status.HTTP_400_BAD_REQUEST,
            )

        order = Order.objects.filter(id=order_id)

        # check if exactly one order is found in the db
        if len(order) != 1:
            return Response(
                {"bad_request": "Invalid Order Id"}, status.HTTP_404_NOT_FOUND
            )

        # This is our order.
        order = order[0]

        # 2) If order has been cancelled
        if order.status == Order.Status.UCA:
            return Response(
                {"bad_request": "This order has been cancelled by the maker"},
                status.HTTP_400_BAD_REQUEST,
            )
        if order.status == Order.Status.CCA:
            return Response(
                {"bad_request": "This order has been cancelled collaborativelly"},
                status.HTTP_400_BAD_REQUEST,
            )

        data = ListOrderSerializer(order).data
        data["total_secs_exp"] = order.t_to_expire(order.status)

        # if user is under a limit (penalty), inform him.
        is_penalized, time_out = Logics.is_penalized(request.user)
        if is_penalized:
            data["penalty"] = request.user.robot.penalty_expiration

        # Add booleans if user is maker, taker, partipant, buyer or seller
        data["is_maker"] = order.maker == request.user
        data["is_taker"] = order.taker == request.user
        data["is_participant"] = data["is_maker"] or data["is_taker"]

        # 3.a) If not a participant and order is not public, forbid.
        if not data["is_participant"] and order.status != Order.Status.PUB:
            return Response(
                {"bad_request": "This order is not available"},
                status.HTTP_403_FORBIDDEN,
            )

        data["maker_nick"] = str(order.maker)
        data["maker_hash_id"] = str(order.maker.robot.hash_id)

        # Add activity status of participants based on last_seen
        data["maker_status"] = Logics.user_activity_status(order.maker.last_login)
        if order.taker is not None:
            data["taker_status"] = Logics.user_activity_status(order.taker.last_login)

        # 3.b) Non participants can view details (but only if PUB)
        if not data["is_participant"] and order.status == Order.Status.PUB:
            data["price_now"], data["premium_now"] = Logics.price_and_premium_now(order)
            data["satoshis_now"] = Logics.satoshis_now(order)
            return Response(data, status=status.HTTP_200_OK)

        # 4) If order is between public and WF2
        if order.status >= Order.Status.PUB and order.status < Order.Status.WF2:
            data["price_now"], data["premium_now"] = Logics.price_and_premium_now(order)
            data["satoshis_now"] = Logics.satoshis_now(order)

            # 4. a) If maker and Public/Paused, add premium percentile
            # num similar orders, and maker information to enable telegram notifications.
            if data["is_maker"] and order.status in [
                Order.Status.PUB,
                Order.Status.PAU,
            ]:
                data["premium_percentile"] = compute_premium_percentile(order)
                data["num_similar_orders"] = len(
                    Order.objects.filter(
                        currency=order.currency, status=Order.Status.PUB
                    )
                )

        # For participants add positions, nicks and status as a message and hold invoices status
        data["is_buyer"] = Logics.is_buyer(order, request.user)
        data["is_seller"] = Logics.is_seller(order, request.user)
        data["taker_nick"] = str(order.taker)
        if order.taker:
            data["taker_hash_id"] = str(order.taker.robot.hash_id)
        data["status_message"] = Order.Status(order.status).label
        data["is_fiat_sent"] = order.is_fiat_sent
        data["latitude"] = order.latitude
        data["longitude"] = order.longitude
        data["is_disputed"] = order.is_disputed
        data["ur_nick"] = request.user.username
        data["satoshis_now"] = order.last_satoshis

        # Add whether hold invoices are LOCKED (ACCEPTED)
        # Is there a maker bond? If so, True if locked, False otherwise
        if order.maker_bond:
            data["maker_locked"] = order.maker_bond.status == LNPayment.Status.LOCKED
        else:
            data["maker_locked"] = False

        # Is there a taker bond? If so, True if locked, False otherwise
        if order.taker_bond:
            data["taker_locked"] = order.taker_bond.status == LNPayment.Status.LOCKED
        else:
            data["taker_locked"] = False

        # Is there an escrow? If so, True if locked, False otherwise
        if order.trade_escrow:
            data["escrow_locked"] = order.trade_escrow.status == LNPayment.Status.LOCKED
        else:
            data["escrow_locked"] = False

        # If both bonds are locked, participants can see the final trade amount in sats.
        if order.status in [
            Order.Status.WF2,
            Order.Status.WFI,
            Order.Status.WFE,
            Order.Status.CCA,
            Order.Status.FSE,
            Order.Status.DIS,
            Order.Status.PAY,
            Order.Status.SUC,
            Order.Status.FAI,
        ]:
            if (
                order.maker_bond.status
                == order.taker_bond.status
                == LNPayment.Status.LOCKED
            ):
                # Seller sees the amount he sends
                if data["is_seller"]:
                    data["trade_satoshis"] = Logics.escrow_amount(order, request.user)[
                        1
                    ]["escrow_amount"]
                # Buyer sees the amount he receives
                elif data["is_buyer"]:
                    data["trade_satoshis"] = Logics.payout_amount(order, request.user)[
                        1
                    ]["invoice_amount"]

        # 5) If status is 'waiting for maker bond' and user is MAKER, reply with a MAKER hold invoice.
        if order.status == Order.Status.WFB and data["is_maker"]:
            valid, context = Logics.gen_maker_hold_invoice(order, request.user)
            if valid:
                data = {**data, **context}
            else:
                return Response(context, status.HTTP_400_BAD_REQUEST)

        # 6)  If status is 'waiting for taker bond' and user is TAKER, reply with a TAKER hold invoice.
        elif order.status == Order.Status.TAK and data["is_taker"]:
            valid, context = Logics.gen_taker_hold_invoice(order, request.user)
            if valid:
                data = {**data, **context}
            else:
                return Response(context, status.HTTP_400_BAD_REQUEST)

        # 7 a. ) If seller and status is 'WF2' or 'WFE'
        elif data["is_seller"] and (
            order.status == Order.Status.WF2 or order.status == Order.Status.WFE
        ):
            # If the two bonds are locked, reply with an ESCROW hold invoice.
            if (
                order.maker_bond.status
                == order.taker_bond.status
                == LNPayment.Status.LOCKED
            ):
                valid, context = Logics.gen_escrow_hold_invoice(order, request.user)
                if valid:
                    data = {**data, **context}
                else:
                    return Response(context, status.HTTP_400_BAD_REQUEST)

        # 7.b) If user is Buyer and status is 'WF2' or 'WFI'
        elif data["is_buyer"] and (
            order.status == Order.Status.WF2 or order.status == Order.Status.WFI
        ):
            # If the two bonds are locked, reply with an AMOUNT and onchain swap cost so he can send the buyer invoice/address.
            if (
                order.maker_bond.status
                == order.taker_bond.status
                == LNPayment.Status.LOCKED
            ):
                valid, context = Logics.payout_amount(order, request.user)
                if valid:
                    data = {**data, **context}
                else:
                    return Response(context, status.HTTP_400_BAD_REQUEST)

        # 8) If status is 'CHA' or 'FSE' and all HTLCS are in LOCKED
        elif order.status in [Order.Status.WFI, Order.Status.CHA, Order.Status.FSE]:
            # If all bonds are locked.
            if (
                order.maker_bond.status
                == order.taker_bond.status
                == order.trade_escrow.status
                == LNPayment.Status.LOCKED
            ):
                # add whether a collaborative cancel is pending or has been asked
                if (data["is_maker"] and order.taker_asked_cancel) or (
                    data["is_taker"] and order.maker_asked_cancel
                ):
                    data["pending_cancel"] = True
                elif (data["is_maker"] and order.maker_asked_cancel) or (
                    data["is_taker"] and order.taker_asked_cancel
                ):
                    data["asked_for_cancel"] = True
                else:
                    data["asked_for_cancel"] = False

            # Add index of last chat message. To be used by client on Chat endpoint to fetch latest messages
            messages = Message.objects.filter(order=order)
            if len(messages) == 0:
                data["chat_last_index"] = 0
            else:
                data["chat_last_index"] = messages.latest().index

        # 9) If status is 'DIS' and all HTLCS are in LOCKED
        elif order.status == Order.Status.DIS:
            # add whether the dispute statement has been received
            if data["is_maker"]:
                data["statement_submitted"] = (
                    order.maker_statement is not None and order.maker_statement != ""
                )
            elif data["is_taker"]:
                data["statement_submitted"] = (
                    order.taker_statement is not None and order.taker_statement != ""
                )

        # 9) If status is 'Failed routing', reply with retry amounts, time of next retry and ask for invoice at third.
        elif (
            order.status == Order.Status.FAI and order.payout.receiver == request.user
        ):  # might not be the buyer if after a dispute where winner wins
            data["retries"] = order.payout.routing_attempts
            data["next_retry_time"] = order.payout.last_routing_time + timedelta(
                minutes=RETRY_TIME
            )
            if order.payout.failure_reason:
                data["failure_reason"] = LNPayment.FailureReason(
                    order.payout.failure_reason
                ).label

            if order.payout.status == LNPayment.Status.EXPIRE:
                data["invoice_expired"] = True
                # Add invoice amount once again if invoice was expired.
                data["trade_satoshis"] = Logics.payout_amount(order, request.user)[1][
                    "invoice_amount"
                ]

        # 10) If status is 'Expired', "Sending", "Finished" or "failed routing", add info for renewal:
        elif order.status in [
            Order.Status.EXP,
            Order.Status.SUC,
            Order.Status.PAY,
            Order.Status.FAI,
        ]:
            data["public_duration"] = order.public_duration
            data["bond_size"] = str(order.bond_size)

            # Adds trade summary
            if order.status in [Order.Status.SUC, Order.Status.PAY, Order.Status.FAI]:
                valid, context = Logics.summarize_trade(order, request.user)
                if valid:
                    data = {**data, **context}

            # If status is 'Expired' add expiry reason
            if order.status == Order.Status.EXP:
                data["expiry_reason"] = order.expiry_reason
                data["expiry_message"] = Order.ExpiryReasons(order.expiry_reason).label

            # If status is 'Succes' add final stats and txid if it is a swap
            if order.status == Order.Status.SUC:
                # If buyer and is a swap, add TXID
                if Logics.is_buyer(order, request.user):
                    if order.is_swap:
                        data["num_satoshis"] = order.payout_tx.num_satoshis
                        data["sent_satoshis"] = order.payout_tx.sent_satoshis
                        data["network"] = str(config("NETWORK"))
                        if order.payout_tx.status in [
                            OnchainPayment.Status.MEMPO,
                            OnchainPayment.Status.CONFI,
                        ]:
                            data["txid"] = order.payout_tx.txid
                        elif order.payout_tx.status == OnchainPayment.Status.QUEUE:
                            data["tx_queued"] = True
                            data["address"] = order.payout_tx.address

        return Response(data, status.HTTP_200_OK)

    @extend_schema(**OrderViewSchema.take_update_confirm_dispute_cancel)
    def take_update_confirm_dispute_cancel(self, request, format=None):
        """
        Here takes place all of the updates to the order object.
        That is: take, confim, cancel, dispute, update_invoice or rate.
        """
        order_id = request.GET.get(self.lookup_url_kwarg)

        serializer = UpdateOrderSerializer(data=request.data)
        if not serializer.is_valid():
            return Response(status=status.HTTP_400_BAD_REQUEST)

        order = Order.objects.get(id=order_id)

        # action is either 1)'take', 2)'confirm', 2.b)'undo_confirm', 3)'cancel', 4)'dispute' , 5)'update_invoice'
        # 5.b)'update_address' 6)'submit_statement' (in dispute), 7)'rate_user' , 8)'rate_platform'
        action = serializer.data.get("action")
        pgp_invoice = serializer.data.get("invoice")
        routing_budget_ppm = serializer.data.get("routing_budget_ppm", 0)
        pgp_address = serializer.data.get("address")
        mining_fee_rate = serializer.data.get("mining_fee_rate")
        statement = serializer.data.get("statement")
        rating = serializer.data.get("rating")

        # 1) If action is take, it is a taker request!
        if action == "take":
            if order.status == Order.Status.PUB:
                valid, context, _ = Logics.validate_already_maker_or_taker(request.user)
                if not valid:
                    return Response(context, status=status.HTTP_409_CONFLICT)

                # For order with amount range, set the amount now.
                if order.has_range:
                    amount = float(serializer.data.get("amount"))
                    valid, context = Logics.validate_amount_within_range(order, amount)
                    if not valid:
                        return Response(context, status=status.HTTP_400_BAD_REQUEST)

                    valid, context = Logics.take(order, request.user, amount)
                else:
                    valid, context = Logics.take(order, request.user)
                if not valid:
                    return Response(context, status=status.HTTP_403_FORBIDDEN)

                return self.get(request)

            else:
                Response(
                    {"bad_request": "This order is not public anymore."},
                    status.HTTP_400_BAD_REQUEST,
                )

        # Any other action is only allowed if the user is a participant
        if not (order.maker == request.user or order.taker == request.user):
            return Response(
                {"bad_request": "You are not a participant in this order"},
                status.HTTP_403_FORBIDDEN,
            )

        # 2) If action is 'update invoice'
        elif action == "update_invoice":
            # DEPRECATE post v0.5.1.
            valid_signature, invoice = verify_signed_message(
                request.user.robot.public_key, pgp_invoice
            )

            if not valid_signature:
                return Response(
                    {"bad_request": "The PGP signed cleartext message is not valid."},
                    status.HTTP_400_BAD_REQUEST,
                )

            valid, context = Logics.update_invoice(
                order, request.user, invoice, routing_budget_ppm
            )
            if not valid:
                return Response(context, status.HTTP_400_BAD_REQUEST)

        # 2.b) If action is 'update address'
        elif action == "update_address":
            valid_signature, address = verify_signed_message(
                request.user.robot.public_key, pgp_address
            )

            if not valid_signature:
                return Response(
                    {"bad_request": "The PGP signed cleartext message is not valid."},
                    status.HTTP_400_BAD_REQUEST,
                )

            valid, context = Logics.update_address(
                order, request.user, address, mining_fee_rate
            )
            if not valid:
                return Response(context, status.HTTP_400_BAD_REQUEST)

        # 3) If action is cancel
        elif action == "cancel":
            valid, context = Logics.cancel_order(order, request.user)
            if not valid:
                return Response(context, status.HTTP_400_BAD_REQUEST)

        # 4) If action is confirm
        elif action == "confirm":
            valid, context = Logics.confirm_fiat(order, request.user)
            if not valid:
                return Response(context, status.HTTP_400_BAD_REQUEST)

        # 4.b) If action is confirm
        elif action == "undo_confirm":
            valid, context = Logics.undo_confirm_fiat_sent(order, request.user)
            if not valid:
                return Response(context, status.HTTP_400_BAD_REQUEST)

        # 5) If action is dispute
        elif action == "dispute":
            valid, context = Logics.open_dispute(order, request.user)
            if not valid:
                return Response(context, status.HTTP_400_BAD_REQUEST)

        elif action == "submit_statement":
            valid, context = Logics.dispute_statement(order, request.user, statement)
            if not valid:
                return Response(context, status.HTTP_400_BAD_REQUEST)

        # 6) If action is rate
        elif action == "rate_user" and rating:
            """No user rating"""
            pass

        # 7) If action is rate_platform
        elif action == "rate_platform" and rating:
            valid, context = Logics.rate_platform(request.user, rating)
            if not valid:
                return Response(context, status.HTTP_400_BAD_REQUEST)

        # 8) If action is rate_platform
        elif action == "pause":
            valid, context = Logics.pause_unpause_public_order(order, request.user)
            if not valid:
                return Response(context, status.HTTP_400_BAD_REQUEST)

        # If nothing of the above... something else is going on. Probably not allowed!
        else:
            return Response(
                {
                    "bad_request": "The Robotic Satoshis working in the warehouse did not understand you. "
                    + "Please, fill a Bug Issue in Github https://github.com/RoboSats/robosats/issues"
                },
                status.HTTP_501_NOT_IMPLEMENTED,
            )

        return self.get(request)


class RobotView(APIView):
    authentication_classes = [TokenAuthentication]
    permission_classes = [IsAuthenticated]

    @extend_schema(**RobotViewSchema.get)
    def get(self, request, format=None):
        """
        Respond with Nickname, pubKey, privKey.
        """
        user = request.user
        context = {}
        context["nickname"] = user.username
        context["hash_id"] = user.robot.hash_id
        context["public_key"] = user.robot.public_key
        context["encrypted_private_key"] = user.robot.encrypted_private_key
        context["earned_rewards"] = user.robot.earned_rewards
        context["wants_stealth"] = user.robot.wants_stealth
        context["last_login"] = user.last_login

        # Adds/generate telegram token and whether it is enabled
        context = {**context, **Telegram.get_context(user)}

        # return active order or last made order if any
        has_no_active_order, _, order = Logics.validate_already_maker_or_taker(
            request.user
        )
        if not has_no_active_order:
            context["active_order_id"] = order.id
        else:
            last_order = Order.objects.filter(
                Q(maker=request.user) | Q(taker=request.user)
            ).last()
            if last_order:
                context["last_order_id"] = last_order.id

        # Robot was found, only if created +5 mins ago
        if user.date_joined < (timezone.now() - timedelta(minutes=5)):
            context["found"] = True

        return Response(context, status=status.HTTP_200_OK)


class BookView(ListAPIView):
    serializer_class = OrderPublicSerializer
    queryset = Order.objects.filter(status=Order.Status.PUB)

    @extend_schema(**BookViewSchema.get)
    def get(self, request, format=None):
        currency = request.GET.get("currency", 0)
        type = request.GET.get("type", 2)

        queryset = Order.objects.filter(status=Order.Status.PUB)

        # Currency 0 and type 2 are special cases treated as "ANY". (These are not really possible choices)
        if int(currency) == 0 and int(type) != 2:
            queryset = Order.objects.filter(type=type, status=Order.Status.PUB)
        elif int(type) == 2 and int(currency) != 0:
            queryset = Order.objects.filter(currency=currency, status=Order.Status.PUB)
        elif not (int(currency) == 0 and int(type) == 2):
            queryset = Order.objects.filter(
                currency=currency, type=type, status=Order.Status.PUB
            )

        if len(queryset) == 0:
            return Response(
                {"not_found": "No orders found, be the first to make one"},
                status=status.HTTP_404_NOT_FOUND,
            )

        book_data = []
        for order in queryset:
            data = ListOrderSerializer(order).data
            data["maker_nick"] = str(order.maker)
            data["maker_hash_id"] = str(order.maker.robot.hash_id)

            data["satoshis_now"] = Logics.satoshis_now(order)
            # Compute current premium for those orders that are explicitly priced.
            price, premium = Logics.price_and_premium_now(order)
            data["price"], data["premium"] = price, str(premium)
            data["maker_status"] = Logics.user_activity_status(order.maker.last_login)
            for key in (
                "status",
                "taker",
            ):  # Non participants should not see the status or who is the taker
                del data[key]

            book_data.append(data)

        return Response(book_data, status=status.HTTP_200_OK)


class InfoView(viewsets.ViewSet):
    serializer_class = InfoSerializer

    @extend_schema(**InfoViewSchema.get)
    def get(self, request):
        context = {}

        context["num_public_buy_orders"] = len(
            Order.objects.filter(type=Order.Types.BUY, status=Order.Status.PUB)
        )
        context["num_public_sell_orders"] = len(
            Order.objects.filter(type=Order.Types.SELL, status=Order.Status.PUB)
        )
        context["book_liquidity"] = Order.objects.filter(
            status=Order.Status.PUB
        ).aggregate(Sum("last_satoshis"))["last_satoshis__sum"]
        context["book_liquidity"] = (
            0 if context["book_liquidity"] is None else context["book_liquidity"]
        )

        # Number of active users (logged in in last 30 minutes)
        today = datetime.today()
        context["active_robots_today"] = len(
            User.objects.filter(last_login__day=today.day)
        )

        # Compute average premium and volume of today
        last_day = timezone.now() - timedelta(days=1)
        queryset = MarketTick.objects.filter(timestamp__gt=last_day)
        if not len(queryset) == 0:
            avg_premium, total_volume = compute_avg_premium(queryset)
        # If no contracts, fallback to lifetime avg premium
        else:
            queryset = MarketTick.objects.all()
            avg_premium, _ = compute_avg_premium(queryset)
            total_volume = 0

        queryset = MarketTick.objects.all()
        if not len(queryset) == 0:
            volume_contracted = []
            for tick in queryset:
                volume_contracted.append(tick.volume if tick.volume else 0)
            lifetime_volume = sum(volume_contracted)
        else:
            lifetime_volume = 0

        context["last_day_nonkyc_btc_premium"] = round(avg_premium, 2)
        context["last_day_volume"] = round(total_volume, 8)
        context["lifetime_volume"] = round(lifetime_volume, 8)
        context["lnd_version"] = get_lnd_version()
        context["cln_version"] = get_cln_version()
        context["robosats_running_commit_hash"] = get_robosats_commit()
        context["version"] = settings.VERSION
        context["alternative_site"] = config("ALTERNATIVE_SITE")
        context["alternative_name"] = config("ALTERNATIVE_NAME")
        context["node_alias"] = config("NODE_ALIAS")
        context["node_id"] = config("NODE_ID")
        context["network"] = config("NETWORK", cast=str, default="mainnet")
        context["maker_fee"] = float(config("FEE")) * float(config("MAKER_FEE_SPLIT"))
        context["maker_fee"] = float(config("FEE")) * float(config("MAKER_FEE_SPLIT"))
        context["taker_fee"] = float(config("FEE")) * (
            1 - float(config("MAKER_FEE_SPLIT"))
        )
        context["bond_size"] = settings.DEFAULT_BOND_SIZE
        context["notice_severity"] = config("NOTICE_SEVERITY", cast=str, default="none")
        context["notice_message"] = config("NOTICE_MESSAGE", cast=str, default="")
        context["min_order_size"] = config("MIN_ORDER_SIZE", cast=int, default=20000)
        context["max_order_size"] = config("MAX_ORDER_SIZE", cast=int, default=250000)
        context["swap_enabled"] = not config("DISABLE_ONCHAIN", cast=bool, default=True)
        context["max_swap"] = config("MAX_SWAP_AMOUNT", cast=int, default=0)

        try:
            context["current_swap_fee_rate"] = Logics.compute_swap_fee_rate(
                BalanceLog.objects.latest("time")
            )
        except BalanceLog.DoesNotExist:
            context["current_swap_fee_rate"] = 0

        return Response(context, status.HTTP_200_OK)


class RewardView(CreateAPIView):
    authentication_classes = [TokenAuthentication]
    permission_classes = [IsAuthenticated]

    serializer_class = ClaimRewardSerializer

    @extend_schema(**RewardViewSchema.post)
    def post(self, request):
        serializer = self.serializer_class(data=request.data)

        if not serializer.is_valid():
            return Response(status=status.HTTP_400_BAD_REQUEST)

        pgp_invoice = serializer.data.get("invoice")

        valid_signature, invoice = verify_signed_message(
            request.user.robot.public_key, pgp_invoice
        )

        if not valid_signature:
            return Response(
                {"bad_request": "The PGP signed cleartext message is not valid."},
                status.HTTP_400_BAD_REQUEST,
            )

        valid, context = Logics.withdraw_rewards(request.user, invoice)

        if not valid:
            context["successful_withdrawal"] = False
            return Response(context, status.HTTP_400_BAD_REQUEST)

        return Response({"successful_withdrawal": True}, status.HTTP_200_OK)


class PriceView(ListAPIView):
    serializer_class = PriceSerializer

    @extend_schema(**PriceViewSchema.get)
    def get(self, request):
        payload = {}
        queryset = Currency.objects.all().order_by("currency")

        for currency in queryset:
            code = Currency.currency_dict[str(currency.currency)]
            try:
                last_tick = MarketTick.objects.filter(currency=currency).latest(
                    "timestamp"
                )
                payload[code] = {
                    "price": last_tick.price,
                    "volume": last_tick.volume,
                    "premium": last_tick.premium,
                    "timestamp": last_tick.timestamp,
                }
            except Exception:
                payload[code] = None

        return Response(payload, status.HTTP_200_OK)


class TickView(ListAPIView):
    queryset = MarketTick.objects.all()
    serializer_class = TickSerializer

    @extend_schema(**TickViewSchema.get)
    def get(self, request):
        start_date_str = request.query_params.get("start")
        end_date_str = request.query_params.get("end")

        # Perform the query with date range filtering
        try:
            if start_date_str:
                naive_start_date = datetime.strptime(start_date_str, "%d-%m-%Y")
                aware_start_date = timezone.make_aware(
                    naive_start_date, timezone=timezone.get_current_timezone()
                )
                self.queryset = self.queryset.filter(timestamp__gte=aware_start_date)
            if end_date_str:
                naive_end_date = datetime.strptime(end_date_str, "%d-%m-%Y")
                aware_end_date = timezone.make_aware(
                    naive_end_date, timezone=timezone.get_current_timezone()
                )
                self.queryset = self.queryset.filter(timestamp__lte=aware_end_date)
        except ValueError:
            return Response(
                {"bad_request": "Invalid date format"},
                status=status.HTTP_400_BAD_REQUEST,
            )

        # Check if the number of ticks exceeds the limit
        if self.queryset.count() > 5000:
            return Response(
                {
                    "bad_request": "More than 5000 market ticks have been found. Please, narrow the date range"
                },
                status=status.HTTP_400_BAD_REQUEST,
            )

        data = self.serializer_class(self.queryset, many=True, read_only=True).data
        return Response(data, status=status.HTTP_200_OK)


class LimitView(ListAPIView):
    @extend_schema(**LimitViewSchema.get)
    def get(self, request):
        # Trade limits as BTC
        min_trade = config("MIN_ORDER_SIZE", cast=int, default=20_000) / 100_000_000
        max_trade = config("MAX_ORDER_SIZE", cast=int, default=500_000) / 100_000_000

        payload = {}
        queryset = Currency.objects.all().order_by("currency")

        for currency in queryset:
            code = Currency.currency_dict[str(currency.currency)]
            exchange_rate = float(currency.exchange_rate)
            payload[currency.currency] = {
                "code": code,
                "price": exchange_rate,
                "min_amount": min_trade * exchange_rate,
                "max_amount": max_trade * exchange_rate,
            }

        return Response(payload, status.HTTP_200_OK)


class HistoricalView(ListAPIView):
    @extend_schema(**HistoricalViewSchema.get)
    def get(self, request):
        payload = {}
        queryset = AccountingDay.objects.all().order_by("day")

        for accounting_day in queryset:
            payload[str(accounting_day.day)] = {
                "volume": accounting_day.contracted,
                "num_contracts": accounting_day.num_contracts,
            }

        return Response(payload, status.HTTP_200_OK)


class StealthView(APIView):
    authentication_classes = [TokenAuthentication]
    permission_classes = [IsAuthenticated]

    serializer_class = StealthSerializer

    @extend_schema(**StealthViewSchema.post)
    def post(self, request):
        serializer = self.serializer_class(data=request.data)

        if not serializer.is_valid():
            return Response(status=status.HTTP_400_BAD_REQUEST)

        stealth = serializer.data.get("wantsStealth")

        request.user.robot.wants_stealth = stealth
        request.user.robot.save(update_fields=["wants_stealth"])

        return Response({"wantsStealth": stealth})