mirror of
https://github.com/believethehype/nostrdvm.git
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470 lines
24 KiB
Python
470 lines
24 KiB
Python
import asyncio
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import json
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import math
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import os
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import signal
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from datetime import timedelta
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from nostr_sdk import (Keys, Client, Timestamp, Filter, nip04_decrypt, nip44_decrypt, HandleNotification, EventBuilder, PublicKey,
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Options, Tag, Event, nip44_encrypt, NostrSigner, EventId, uniffi_set_event_loop, make_private_msg, Nip44Version)
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from nostr_dvm.utils.database_utils import fetch_user_metadata
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from nostr_dvm.utils.definitions import EventDefinitions, relay_timeout
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from nostr_dvm.utils.dvmconfig import DVMConfig
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from nostr_dvm.utils.nip88_utils import nip88_has_active_subscription
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from nostr_dvm.utils.nip89_utils import NIP89Config
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from nostr_dvm.utils.nostr_utils import send_event
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from nostr_dvm.utils.nwc_tools import nwc_zap
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from nostr_dvm.utils.print_utils import bcolors
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from nostr_dvm.utils.subscription_utils import create_subscription_sql_table, add_to_subscription_sql_table, \
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get_from_subscription_sql_table, update_subscription_sql_table, get_all_subscriptions_from_sql_table, \
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delete_from_subscription_sql_table
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from nostr_dvm.utils.zap_utils import zaprequest
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class Subscription:
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job_list: list
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# This is a simple list just to keep track which events we created and manage, so we don't pay for other requests
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def __init__(self, dvm_config, admin_config=None):
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asyncio.run(self.run_subscription(dvm_config, admin_config))
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uniffi_set_event_loop(asyncio.get_running_loop())
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async def run_subscription(self, dvm_config, admin_config):
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self.NAME = "Subscription Handler"
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dvm_config.DB = "db/" + "subscriptions" + ".db"
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self.dvm_config = dvm_config
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nip89config = NIP89Config()
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nip89config.NAME = self.NAME
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self.dvm_config.NIP89 = nip89config
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self.admin_config = admin_config
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self.keys = Keys.parse(dvm_config.PRIVATE_KEY)
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self.client = Client(NostrSigner.keys(self.keys))
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pk = self.keys.public_key()
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self.job_list = []
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print(bcolors.BLUE + "[Subscription] " + "Nostr Subscription Handler public key: " + str(
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pk.to_bech32()) + " Hex: " + str(pk.to_hex()) + bcolors.ENDC)
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for relay in self.dvm_config.RELAY_LIST:
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await self.client.add_relay(relay)
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await self.client.connect()
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zap_filter = Filter().pubkey(pk).kinds([EventDefinitions.KIND_ZAP]).since(Timestamp.now())
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cancel_subscription_filter = Filter().kinds([EventDefinitions.KIND_NIP88_STOP_SUBSCRIPTION_EVENT]).since(
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Timestamp.now())
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authors = []
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if admin_config is not None and len(admin_config.USERNPUBS) > 0:
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# we might want to limit which services can connect to the subscription handler
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for key in admin_config.USERNPUBS:
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authors.append(PublicKey.parse(key))
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dvm_filter = Filter().authors(authors).pubkey(pk).kinds(
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[EventDefinitions.KIND_NIP90_DVM_SUBSCRIPTION]).since(
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Timestamp.now())
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else:
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# or we don't
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dvm_filter = Filter().pubkey(pk).kinds(
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[EventDefinitions.KIND_NIP90_DVM_SUBSCRIPTION]).since(
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Timestamp.now())
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await self.client.subscribe(zap_filter, None)
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await self.client.subscribe(dvm_filter, None)
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await self.client.subscribe(cancel_subscription_filter, None)
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create_subscription_sql_table(dvm_config.DB)
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class NotificationHandler(HandleNotification):
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client = self.client
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dvm_config = self.dvm_config
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keys = self.keys
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async def handle(self, relay_url, subscription_id, nostr_event: Event):
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if nostr_event.kind() == EventDefinitions.KIND_NIP90_DVM_SUBSCRIPTION:
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await handle_nwc_request(nostr_event)
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elif nostr_event.kind() == EventDefinitions.KIND_NIP88_STOP_SUBSCRIPTION_EVENT:
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await handle_cancel(nostr_event)
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async def handle_msg(self, relay_url, msg):
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return
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async def handle_cancel(nostr_event):
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print(nostr_event.as_json())
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sender = nostr_event.author().to_hex()
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kind7001eventid = ""
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recipient = ""
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if sender == self.keys.public_key().to_hex():
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return
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for tag in nostr_event.tags().to_vec():
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if tag.as_vec()[0] == "p":
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recipient = tag.as_vec()[1]
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elif tag.as_vec()[0] == "e":
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kind7001eventid = tag.as_vec()[1]
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if kind7001eventid != "":
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subscription = get_from_subscription_sql_table(dvm_config.DB, kind7001eventid)
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if subscription is not None:
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update_subscription_sql_table(dvm_config.DB, kind7001eventid, recipient,
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subscription.subscriber, subscription.nwc, subscription.cadence,
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subscription.amount, subscription.unit, subscription.begin,
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subscription.end,
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subscription.tier_dtag, subscription.zaps, subscription.recipe,
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False, Timestamp.now().as_secs(), subscription.tier)
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# send_status_canceled(kind7001eventid, nostr_event) # TODO, waiting for spec
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def infer_subscription_end_time(start, cadence):
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end = start
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if cadence == "daily":
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end = start + 60 * 60 * 24
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elif cadence == "weekly":
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end = start + 60 * 60 * 24 * 7
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elif cadence == "monthly":
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# TODO check days of month -.-
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end = start + 60 * 60 * 24 * 31
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elif cadence == "yearly":
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# TODO check extra day every 4 years
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end = start + 60 * 60 * 24 * 356
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return end
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async def send_status_success(original_event, domain):
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e_tag = Tag.parse(["e", original_event.id().to_hex()])
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p_tag = Tag.parse(["p", original_event.author().to_hex()])
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status_tag = Tag.parse(["status", "success", "Job has been scheduled, you can manage it on " + domain])
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reply_tags = [status_tag]
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encryption_tags = []
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encrypted_tag = Tag.parse(["encrypted"])
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encryption_tags.append(encrypted_tag)
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encryption_tags.append(p_tag)
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encryption_tags.append(e_tag)
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str_tags = []
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for element in reply_tags:
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str_tags.append(element.as_vec())
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content = json.dumps(str_tags)
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content = nip44_encrypt(self.keys.secret_key(), PublicKey.parse(original_event.author().to_hex()),
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content, Nip44Version.V2)
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reply_tags = encryption_tags
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keys = Keys.parse(dvm_config.PRIVATE_KEY)
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reaction_event = EventBuilder(EventDefinitions.KIND_FEEDBACK, str(content)).tags(reply_tags).sign_with_keys(keys)
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await send_event(reaction_event, client=self.client, dvm_config=self.dvm_config)
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print("[" + self.dvm_config.NIP89.NAME + "]" + ": Sent Kind " + str(
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EventDefinitions.KIND_FEEDBACK.as_u16()) + " Reaction: " + "success" + " " + reaction_event.as_json())
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async def pay_zap_split(nwc, overall_amount, zaps, tier, unit="msats"):
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overallsplit = 0
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for zap in zaps:
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print(zap)
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overallsplit += int(zap[3])
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print(overallsplit)
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zapped_amount = 0
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for zap in zaps:
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if zap[1] == "":
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# If the client did decide to not add itself to the zap split, or if a slot is left we add the subscription service in the empty space
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zap[1] = Keys.parse(self.dvm_config.PRIVATE_KEY).public_key().to_hex()
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name, nip05, lud16 = await fetch_user_metadata(zap[1], self.client)
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splitted_amount = math.floor(
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(int(zap[3]) / overallsplit) * int(overall_amount) / 1000)
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# invoice = create_bolt11_lud16(lud16, splitted_amount)
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# TODO add details about DVM in message
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invoice = zaprequest(lud16, splitted_amount, tier, None,
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PublicKey.parse(zap[1]), self.keys, self.dvm_config.RELAY_LIST)
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print(invoice)
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if invoice is not None:
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nwc_event_id = await nwc_zap(nwc, invoice, self.keys, zap[2])
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if nwc_event_id is None:
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print("error zapping " + lud16)
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else:
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zapped_amount = zapped_amount + (splitted_amount * 1000)
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print(str(zapped_amount) + "/" + str(overall_amount))
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if zapped_amount < overall_amount * 0.8: # TODO how do we handle failed zaps for some addresses? we are ok with 80% for now
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# if zapped_amount < int(zaps[0][3]):
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success = False
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else:
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success = True
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# if no active subscription exists OR the subscription ended, pay
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return success
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async def make_subscription_zap_recipe(event7001, recipient, subscriber, start, end, tier_dtag):
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message = "payed by subscription service"
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pTag = Tag.parse(["p", recipient])
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PTag = Tag.parse(["P", subscriber])
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eTag = Tag.parse(["e", event7001])
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validTag = Tag.parse(["valid", str(start), str(end)])
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tierTag = Tag.parse(["tier", tier_dtag])
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alttag = Tag.parse(["alt", "This is a NIP90 DVM Subscription Payment Recipe"])
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tags = [pTag, PTag, eTag, validTag, tierTag, alttag]
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event = EventBuilder(EventDefinitions.KIND_NIP88_PAYMENT_RECIPE,
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message).tags(tags).sign_with_keys(self.keys)
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dvmconfig = DVMConfig()
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client = Client(self.keys)
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for relay in dvmconfig.RELAY_LIST:
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await client.add_relay(relay)
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await client.connect()
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recipe = await client.send_event(event)
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recipe_id = recipe.id
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await client.shutdown()
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recipe = recipe_id.to_hex()
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return recipe
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async def handle_nwc_request(nostr_event):
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print(nostr_event.as_json())
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sender = nostr_event.author().to_hex()
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if sender == self.keys.public_key().to_hex():
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return
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try:
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try:
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decrypted_text = nip44_decrypt(self.keys.secret_key(), nostr_event.author(), nostr_event.content())
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except:
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decrypted_text = nip04_decrypt(self.keys.secret_key(), nostr_event.author(), nostr_event.content())
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subscriber = ""
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nwc = ""
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try:
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jsonevent = json.loads(decrypted_text)
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for entry in jsonevent:
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if entry[1] == "nwc":
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nwc = entry[2]
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elif entry[1] == "p":
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subscriber = entry[2]
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subscriptionfilter = Filter().kind(EventDefinitions.KIND_NIP88_SUBSCRIBE_EVENT).author(
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PublicKey.parse(subscriber)).limit(1)
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evts = await self.client.fetch_events(subscriptionfilter, relay_timeout)
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if len(evts.to_vec()) > 0:
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event7001id = evts.to_vec()[0].id().to_hex()
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print(evts.to_vec()[0].as_json())
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tier_dtag = ""
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recipient = ""
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cadence = ""
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unit = "msats"
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zaps = []
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tier = "DVM"
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overall_amount = 0
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subscription_event_id = ""
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for tag in evts.to_vec()[0].tags().to_vec():
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if tag.as_vec()[0] == "amount":
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overall_amount = int(tag.as_vec()[1])
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unit = tag.as_vec()[2]
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cadence = tag.as_vec()[3]
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print(str(overall_amount) + " " + unit + " " + cadence)
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elif tag.as_vec()[0] == "p":
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recipient = tag.as_vec()[1]
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elif tag.as_vec()[0] == "e":
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subscription_event_id = tag.as_vec()[1]
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elif tag.as_vec()[0] == "event":
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jsonevent = json.loads(tag.as_vec()[1])
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subscription_event = Event.from_json(jsonevent)
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for tag in subscription_event.tags().to_vec():
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if tag.as_vec()[0] == "d":
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tier_dtag = tag.as_vec()[1]
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elif tag.as_vec()[0] == "zap":
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zaps.append(tag.as_vec())
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elif tag.as_vec()[0] == "title":
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tier = tag.as_vec()[1]
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if tier_dtag == "" or len(zaps) == 0:
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tierfilter = Filter().id(EventId.parse(subscription_event_id))
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evts = await self.client.fetch_events(tierfilter, relay_timeout)
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if len(evts.to_vec()) > 0:
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for tag in evts[0].tags().to_vec():
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if tag.as_vec()[0] == "d":
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tier_dtag = tag.as_vec()[0]
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isactivesubscription = False
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recipe = ""
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subscription = get_from_subscription_sql_table(dvm_config.DB, event7001id)
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zapsstr = json.dumps(zaps)
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print(zapsstr)
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success = True
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if subscription is None or subscription.end <= Timestamp.now().as_secs():
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# rather check nostr if our db is right
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subscription_status = await nip88_has_active_subscription(
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PublicKey.parse(subscriber),
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tier_dtag, self.client, recipient, checkCanceled=False)
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if not subscription_status["isActive"]:
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start = Timestamp.now().as_secs()
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end = infer_subscription_end_time(start, cadence)
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# we add or update the subscription in the db, with non-active subscription to avoid double payments
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if subscription is None:
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add_to_subscription_sql_table(dvm_config.DB, event7001id, recipient, subscriber,
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nwc,
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cadence, overall_amount, unit, start, end, tier_dtag,
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zapsstr, recipe, isactivesubscription,
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Timestamp.now().as_secs(), tier)
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print("new subscription entry before payment")
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else:
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update_subscription_sql_table(dvm_config.DB, event7001id, recipient, subscriber,
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nwc,
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cadence, overall_amount, unit, start, end,
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tier_dtag, zapsstr, recipe, isactivesubscription,
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Timestamp.now().as_secs(), tier)
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print("updated subscription entry before payment")
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# we attempt to pay the subscription
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success = await pay_zap_split(nwc, overall_amount, zaps, tier, unit)
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else:
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start = Timestamp.now().as_secs()
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end = subscription_status["validUntil"]
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else:
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start = subscription.begin
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end = subscription.end
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if success:
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# we create a payment recipe
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recipe = await make_subscription_zap_recipe(event7001id, recipient, subscriber, start, end,
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tier_dtag)
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print("RECIPE " + recipe)
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isactivesubscription = True
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# we then update the subscription based on payment success
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update_subscription_sql_table(dvm_config.DB, event7001id, recipient, subscriber, nwc,
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cadence, overall_amount, unit, start, end,
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tier_dtag, zapsstr, recipe, isactivesubscription,
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Timestamp.now().as_secs(), tier)
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print("updated subscription entry after payment")
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await send_status_success(nostr_event, "noogle.lol")
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message = ("Subscribed to DVM " + tier + ". Renewing on: " + str(
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Timestamp.from_secs(end).to_human_datetime().replace("Z", " ").replace("T",
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" ") + " GMT"))
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event = await make_private_msg(NostrSigner.keys(self.keys), PublicKey.parse(subscriber), message)
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await self.client.send_event(event)
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except Exception as e:
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print(e)
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except Exception as e:
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print("Error in Subscriber " + str(e))
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def handle_expired_subscription(subscription):
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delete_threshold = 60 * 60 * 24 * 365
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if subscription.cadence == "daily":
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delete_threshold = 60 * 60 * 24 * 3 # After 3 days, delete the subscription, user can make a new one
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elif subscription.cadence == "weekly":
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delete_threshold = 60 * 60 * 24 * 21 # After 21 days, delete the subscription, user can make a new one
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elif subscription.cadence == "monthly":
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delete_threshold = 60 * 60 * 24 * 60 # After 60 days, delete the subscription, user can make a new one
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elif subscription.cadence == "yearly":
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delete_threshold = 60 * 60 * 24 * 500 # After 500 days, delete the subscription, user can make a new one
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if subscription.end < (Timestamp.now().as_secs() - delete_threshold):
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delete_from_subscription_sql_table(dvm_config.DB, subscription.id)
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print("Delete expired subscription")
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async def handle_subscription_renewal(subscription):
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zaps = json.loads(subscription.zaps)
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success = await pay_zap_split(subscription.nwc, subscription.amount, zaps, subscription.tier,
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subscription.unit)
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if success:
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end = infer_subscription_end_time(Timestamp.now().as_secs(), subscription.cadence)
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recipe = await make_subscription_zap_recipe(subscription.id, subscription.recipent,
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subscription.subscriber, subscription.begin,
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end, subscription.tier_dtag)
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else:
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end = Timestamp.now().as_secs()
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recipe = subscription.recipe
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delete_from_subscription_sql_table(dvm_config.DB, subscription.id)
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update_subscription_sql_table(dvm_config.DB, subscription.id,
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subscription.recipent,
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subscription.subscriber, subscription.nwc,
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subscription.cadence, subscription.amount,
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subscription.unit,
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subscription.begin, end,
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subscription.tier_dtag, subscription.zaps, recipe,
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success,
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Timestamp.now().as_secs(), subscription.tier)
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print("updated subscription entry")
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keys = Keys.parse(dvm_config.PRIVATE_KEY)
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message = (
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"Renewed Subscription to DVM " + subscription.tier + ". Next renewal: " + str(
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Timestamp.from_secs(end).to_human_datetime().replace("Z", " ").replace("T",
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" ")))
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# await self.client.send_direct_msg(PublicKey.parse(subscription.subscriber), message, None)
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event = await make_private_msg(NostrSigner.keys(self.keys), PublicKey.parse(subscription.subscriber), message)
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await self.client.send_event(event)
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async def check_subscriptions():
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try:
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subscriptions = get_all_subscriptions_from_sql_table(dvm_config.DB)
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for subscription in subscriptions:
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if subscription.nwc == "":
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delete_from_subscription_sql_table(dvm_config.DB, subscription.id)
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if subscription.active:
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if subscription.end < Timestamp.now().as_secs():
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# We could directly zap, but let's make another check if our subscription expired
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subscription_status = await nip88_has_active_subscription(
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PublicKey.parse(subscription.subscriber),
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subscription.tier_dtag, self.client, subscription.recipent)
|
|
|
|
if subscription_status["expires"]:
|
|
# if subscription expires, just note it as not active
|
|
update_subscription_sql_table(dvm_config.DB, subscription_status["subscriptionId"],
|
|
subscription.recipent,
|
|
subscription.subscriber, subscription.nwc,
|
|
subscription.cadence, subscription.amount,
|
|
subscription.unit,
|
|
subscription.begin, subscription.end,
|
|
subscription.tier_dtag, subscription.zaps,
|
|
subscription.recipe,
|
|
False,
|
|
Timestamp.now().as_secs(), subscription.tier)
|
|
else:
|
|
await handle_subscription_renewal(subscription)
|
|
|
|
else:
|
|
handle_expired_subscription(subscription)
|
|
|
|
print(str(Timestamp.now().as_secs()) + ": Checking " + str(
|
|
len(subscriptions)) + " Subscription entries..")
|
|
except Exception as e:
|
|
print(e)
|
|
|
|
asyncio.create_task(self.client.handle_notifications(NotificationHandler()))
|
|
|
|
try:
|
|
while True:
|
|
await asyncio.sleep(60.0)
|
|
await check_subscriptions()
|
|
except KeyboardInterrupt:
|
|
print('Stay weird!')
|
|
os.kill(os.getpid(), signal.SIGTERM)
|