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102 lines
3.3 KiB
Python
102 lines
3.3 KiB
Python
import pygeohash
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import hashlib
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import uuid
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from asgiref.sync import sync_to_async
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from nostr_sdk import Keys, Client, EventBuilder, NostrSigner, Kind, Tag
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from api.models import Order
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from decouple import config
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class Nostr:
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"""Simple nostr events manager to be used as a cache system for clients"""
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async def send_order_event(self, order):
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"""Creates the event and sends it to the coordinator relay"""
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if config("NOSTR_NSEC", cast=str, default="") == "":
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return
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print("Sending nostr event")
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# Initialize with coordinator Keys
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keys = Keys.parse(config("NOSTR_NSEC", cast=str))
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signer = NostrSigner.keys(keys)
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client = Client(signer)
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# Add relays and connect
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await client.add_relays(["ws://localhost:7777"])
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await client.connect()
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robot_name = await self.get_robot_name(order)
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currency = await self.get_robot_currency(order)
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event = EventBuilder(
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Kind(38383), "", self.generate_tags(order, robot_name, currency)
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).to_event(keys)
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await client.send_event(event)
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print(f"Nostr event sent: {event.as_json()}")
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@sync_to_async
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def get_robot_name(self, order):
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return order.maker.username
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@sync_to_async
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def get_robot_currency(self, order):
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return str(order.currency)
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def generate_tags(self, order, robot_name, currency):
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hashed_id = hashlib.md5(
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f"{config("COORDINATOR_ALIAS", cast=str)}{order.id}".encode("utf-8")
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).hexdigest()
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tags = [
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Tag.parse(["d", str(uuid.UUID(hashed_id))]),
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Tag.parse(["name", robot_name]),
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Tag.parse(["k", "sell" if order.type == Order.Types.SELL else "buy"]),
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Tag.parse(["f", currency]),
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Tag.parse(["s", self.get_status_tag(order)]),
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Tag.parse(["amt", "0"]),
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Tag.parse(
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["fa"]
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+ (
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[str(order.amount)]
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if not order.has_range
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else [str(order.min_amount), str(order.max_amount)]
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)
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),
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Tag.parse(["pm"] + order.payment_method.split(" ")),
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Tag.parse(["premium", str(order.premium)]),
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Tag.parse(
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[
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"source",
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f"http://{config("HOST_NAME")}/order/{config("COORDINATOR_ALIAS", cast=str).lower()}/{order.id}",
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]
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),
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Tag.parse(["expiration", str(int(order.expires_at.timestamp()))]),
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Tag.parse(["y", "robosats", config("COORDINATOR_ALIAS", cast=str).lower()]),
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Tag.parse(["n", str(config("NETWORK"))]),
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Tag.parse(["layer"] + self.get_layer_tag(order)),
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Tag.parse(["bond", str(order.bond_size)]),
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Tag.parse(["z", "order"]),
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]
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if order.latitude and order.longitude:
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tags.extend(
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[Tag.parse(["g", pygeohash.encode(order.latitude, order.longitude)])]
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)
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return tags
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def get_status_tag(self, order):
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if order.status == Order.Status.PUB:
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return "pending"
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else:
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return "success"
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def get_layer_tag(self, order):
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if order.type == Order.Types.SELL:
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return ["onchain", "lightning"]
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else:
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return ["lightning"]
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