Update discord_lnbits_bot.py
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@ -22,7 +22,7 @@ from sqlalchemy.ext.declarative import declarative_base
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from sqlalchemy.orm import sessionmaker
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# ─── Environment & Logging ────────────────────────────────────────────────────
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load_dotenv() # loads variables from .env into os.environ
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load_dotenv() # loads .env into os.environ
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logging.basicConfig(
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level=logging.INFO,
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@ -40,19 +40,19 @@ PRICE = int(os.getenv("PRICE", 0))
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CHANNEL_ID = int(os.getenv("CHANNEL_ID", 0))
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INVOICE_MESSAGE_TEMPLATE = os.getenv("INVOICE_MESSAGE", "Invoice for your purchase.")
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COMMAND_NAME = os.getenv("COMMAND_NAME", "support")
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DATABASE_URL = os.getenv("DATABASE_URL") # e.g. postgres://user:pass@db:5432/bot
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DATABASE_URL = os.getenv("DATABASE_URL")
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# Sanity checks
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for var_name in (
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# Ensure all required env vars are present
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for var in (
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"DISCORD_TOKEN", "GUILD_ID", "ROLE_ID",
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"LNBITS_URL", "LNBITS_API_KEY", "PRICE",
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"CHANNEL_ID", "DATABASE_URL"
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):
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if not globals()[var_name]:
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logger.critical(f"Environment variable {var_name} is missing.")
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if not globals()[var]:
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logger.critical(f"Environment variable {var} is missing.")
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exit(1)
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# Construct WS URL
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# Build WS URL from LNBITS_URL
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if LNBITS_URL.startswith("https://"):
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base_ws = LNBITS_URL.replace("https://", "wss://", 1)
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elif LNBITS_URL.startswith("http://"):
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@ -60,10 +60,8 @@ elif LNBITS_URL.startswith("http://"):
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else:
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logger.critical("LNBITS_URL must start with http:// or https://")
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exit(1)
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LNBITS_WS_URL = f"{base_ws}/api/v1/ws/{LNBITS_API_KEY}"
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# ─── Database Setup ───────────────────────────────────────────────────────────
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Base = declarative_base()
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@ -80,7 +78,6 @@ SessionLocal = sessionmaker(bind=engine, expire_on_commit=False)
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Base.metadata.create_all(engine)
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logger.info("✅ Database tables ensured.")
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# ─── Discord Bot Setup ────────────────────────────────────────────────────────
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intents = discord.Intents.default()
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intents.members = True
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@ -91,31 +88,34 @@ pending_invoices = {} # payment_hash -> (user_id, interaction)
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# ─── Role Assignment Handler ──────────────────────────────────────────────────
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async def assign_role_after_payment(payment_hash: str, payment_obj: dict):
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logger.debug(f"ENTER assign_role_after_payment for hash={payment_hash}")
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user_id, interaction = pending_invoices.pop(payment_hash, (None, None))
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if user_id is None:
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data = pending_invoices.pop(payment_hash, None)
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if data is None:
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logger.info(f"No pending invoice for hash={payment_hash}")
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return
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user_id, interaction = data
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# Record to database
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amt = payment_obj.get("amount", 0)
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# Convert from millisatoshis to sats
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raw_msat = payment_obj.get("amount", 0)
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sat_amount = raw_msat // 1000
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# Record payment in DB
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session = SessionLocal()
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try:
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payment = Payment(
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payment_hash=payment_hash,
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user_id=str(user_id),
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amount=amt,
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amount=sat_amount,
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paid_at=datetime.utcnow()
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)
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session.add(payment)
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session.commit()
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logger.info(f"💾 Logged payment {payment_hash} for user {user_id} ({amt} sats).")
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logger.info(f"💾 Logged payment {payment_hash} for user {user_id} ({sat_amount} sats).")
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except Exception:
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session.rollback()
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logger.exception("DB error saving payment")
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finally:
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session.close()
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# Fetch guild, member, role
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guild = bot.get_guild(GUILD_ID)
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if not guild:
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logger.error(f"Guild {GUILD_ID} not found")
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@ -123,11 +123,12 @@ async def assign_role_after_payment(payment_hash: str, payment_obj: dict):
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member = guild.get_member(user_id) or await guild.fetch_member(user_id)
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role = guild.get_role(ROLE_ID)
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if not role:
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logger.error(f"Role {ROLE_ID} not found in guild {guild.id}")
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channel = bot.get_channel(CHANNEL_ID)
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if not all([member, role, channel]):
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logger.error("Member, role, or channel not found")
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return
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# Assign role if needed
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if role not in member.roles:
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logger.debug(f"Adding role '{role.name}' to {member.display_name}")
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try:
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@ -135,22 +136,20 @@ async def assign_role_after_payment(payment_hash: str, payment_obj: dict):
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member.add_roles(role, reason="Paid via Lightning"),
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timeout=10
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)
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channel = bot.get_channel(CHANNEL_ID)
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await channel.send(
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f"🎉 {member.mention} has paid **{amt} sats** and received the **{role.name}** role!"
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f"🎉 {member.mention} has paid **{sat_amount} sats** "
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f"and received the **{role.name}** role!"
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)
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logger.info(f"✅ Role '{role.name}' assigned to {member.display_name}")
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except Exception:
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logger.exception("Error assigning role or sending confirmation")
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else:
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# Already has role
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channel = bot.get_channel(CHANNEL_ID)
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await channel.send(
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f"ℹ️ {member.mention} paid again (hash={payment_hash}), role **{role.name}** already assigned."
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f"ℹ️ {member.mention} paid again (hash={payment_hash}), "
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f"role **{role.name}** already assigned."
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)
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logger.info(f"User {member.display_name} already had role; notified channel.")
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# ─── LNbits WebSocket Listener ────────────────────────────────────────────────
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async def lnbits_ws_listener():
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await bot.wait_until_ready()
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@ -166,15 +165,9 @@ async def lnbits_ws_listener():
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pay = data.get("payment", {})
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hsh = pay.get("checking_id") or pay.get("payment_hash")
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amt = pay.get("amount", 0)
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# LNbits uses status="success" on paid
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if hsh and pay.get("status") == "success" and amt > 0:
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logger.info(
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f"💡 Payment received hash={hsh}, amt={amt}"
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)
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# schedule role assignment
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bot.loop.create_task(
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assign_role_after_payment(hsh, pay)
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)
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logger.info(f"💡 Payment received hash={hsh}, amt={amt}")
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bot.loop.create_task(assign_role_after_payment(hsh, pay))
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else:
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logger.debug("Ignored WS update (not a paid invoice)")
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except json.JSONDecodeError:
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@ -183,22 +176,17 @@ async def lnbits_ws_listener():
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logger.exception("WS listener error; reconnecting in 10s")
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await asyncio.sleep(10)
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# ─── Slash Command Registration ───────────────────────────────────────────────
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@bot.event
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async def on_ready():
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logger.info(f"Logged in as {bot.user} (ID: {bot.user.id})")
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# sync commands
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try:
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synced = await bot.tree.sync()
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logger.info(f"✅ Synced {len(synced)} command(s).")
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except Exception:
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logger.exception("Failed to sync commands")
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# start WS listener
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bot.loop.create_task(lnbits_ws_listener())
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@bot.tree.command(name=COMMAND_NAME, description="Pay to get your role via Lightning")
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async def dynamic_command(interaction: discord.Interaction):
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invoice_ch = bot.get_channel(CHANNEL_ID)
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@ -209,11 +197,18 @@ async def dynamic_command(interaction: discord.Interaction):
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)
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return
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# offload blocking REST call + QR gen
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loop = asyncio.get_running_loop()
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invoice_data = {"out": False, "amount": PRICE, "memo": f"Role for {interaction.user.display_name}"}
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headers = {"X-Api-Key": LNBITS_API_KEY, "Content-Type": "application/json"}
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invoice_data = {
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"out": False,
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"amount": PRICE,
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"memo": f"Role for {interaction.user.display_name}"
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}
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headers = {
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"X-Api-Key": LNBITS_API_KEY,
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"Content-Type": "application/json"
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}
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# Create invoice
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def create_invoice():
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resp = requests.post(
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f"{LNBITS_URL}/api/v1/payments",
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@ -224,10 +219,9 @@ async def dynamic_command(interaction: discord.Interaction):
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resp.raise_for_status()
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return resp.json()
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# Create invoice
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try:
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invoice_json = await loop.run_in_executor(None, create_invoice)
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except Exception as e:
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except Exception:
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logger.exception("Error creating LNbits invoice")
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await interaction.response.send_message(
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"❌ Failed to generate invoice. Try again later.",
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@ -235,32 +229,41 @@ async def dynamic_command(interaction: discord.Interaction):
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)
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return
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pay_req = invoice_json["bolt11"]
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pay_hash = invoice_json["payment_hash"]
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pending_invoices[pay_hash] = (interaction.user.id, interaction)
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logger.info(f"Stored pending invoice {pay_hash} for user {interaction.user.id}")
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payment_request = invoice_json["bolt11"]
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payment_hash = invoice_json["payment_hash"]
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pending_invoices[payment_hash] = (interaction.user.id, interaction)
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logger.info(f"Stored pending invoice {payment_hash} for user {interaction.user.id}")
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# Generate QR
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qr_bytes = await loop.run_in_executor(None, lambda: qrcode.make(pay_req).get_image().tobytes())
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qr_file = File(io.BytesIO(qr_bytes), filename="invoice.png")
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# Generate QR code
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def make_qr_buffer():
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img = qrcode.make(payment_request)
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buf = io.BytesIO()
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img.save(buf, format="PNG")
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buf.seek(0)
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return buf
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qr_buffer = await loop.run_in_executor(None, make_qr_buffer)
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qr_file = File(qr_buffer, filename="invoice.png")
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embed = Embed(
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title="⚡ Please Pay ⚡",
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description=INVOICE_MESSAGE_TEMPLATE,
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color=discord.Color.gold()
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)
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embed.add_field(name="Invoice", value=f"```{pay_req}```", inline=False)
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embed.add_field(name="Invoice", value=f"```{payment_request}```", inline=False)
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embed.add_field(name="Amount", value=f"{PRICE} sats", inline=True)
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embed.set_image(url="attachment://invoice.png")
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embed.set_footer(text=f"Hash: {pay_hash}")
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embed.set_footer(text=f"Hash: {payment_hash}")
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# Send invoice & ack
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await invoice_ch.send(content=interaction.user.mention, embed=embed, file=qr_file)
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await invoice_ch.send(
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content=interaction.user.mention,
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embed=embed,
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file=qr_file
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)
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await interaction.response.send_message(
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f"✅ Invoice posted in {invoice_ch.mention}", ephemeral=True
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)
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# ─── Run Bot ──────────────────────────────────────────────────────────────────
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if __name__ == "__main__":
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bot.run(DISCORD_TOKEN)
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