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77 lines
2.4 KiB
Python
77 lines
2.4 KiB
Python
import pygeohash
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import hashlib
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import uuid
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from nostr_sdk import Keys, Client, EventBuilder, NostrSigner
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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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event = EventBuilder(38383, "", self.generate_tags(order)).to_event(keys)
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event.custom_created_at(order.created_at.timestamp())
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output = await client.send_event(event)
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print(f"Nostr event sent: {output}")
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def generate_tags(self, order):
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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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["d", uuid.UUID(hashed_id)],
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["name", order.maker.robot_name],
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["k", order.type.lower()],
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["f", order.currency],
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["s", self.get_status_tag(order)],
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["amt", "0"],
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["fa", order.amount],
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["pm", order.payment_method.split(" ")],
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["premium", order.premium_percentile * 100],
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[
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"source",
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f"{config("HOST_NAME")}/{config("COORDINATOR_ALIAS")}/order/{order.id}",
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],
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["expiration", order.expires_at.timestamp()],
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["y", "robosats", config("COORDINATOR_ALIAS", cast=str)],
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["n", order.network],
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["layer", self.get_layer_tag(order)],
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["bond", order.bond],
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["z", "order"],
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]
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if order.latitude and order.longitude:
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tags.extend([["g", pygeohash.encode(order.latitude, order.longitude)]])
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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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