Dockerfile

Dockerfile

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+FROM python:3.9-slim
+RUN apt-get update
+RUN apt-get install -y curl python3-dev autoconf g++
+RUN curl -sSL https://install.python-poetry.org | python3 -
+ENV PATH="/root/.local/bin:$PATH"
+WORKDIR /app
+COPY . .
+RUN poetry config virtualenvs.create false
+RUN poetry install --no-dev --no-root
+EXPOSE 3338
+CMD ["poetry", "run", "mint", "--port", "3338", "--host", "0.0.0.0"]

wallet/cashu.py

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+#!/usr/bin/env python
+
+import asyncio
+import base64
+import json
+from functools import wraps
+
+import click
+from bech32 import bech32_decode, bech32_encode, convertbits
+
+from core.settings import MINT_URL
+from wallet.migrations import m001_initial
+from wallet.wallet import Wallet as Wallet
+
+
+async def init_wallet(wallet: Wallet):
+    """Performs migrations and loads proofs from db."""
+    await m001_initial(db=wallet.db)
+    await wallet.load_proofs()
+
+
+class NaturalOrderGroup(click.Group):
+    """For listing commands in help in order of definition"""
+
+    def list_commands(self, ctx):
+        return self.commands.keys()
+
+
+@click.group(cls=NaturalOrderGroup)
+@click.option("--host", "-h", default=MINT_URL, help="Mint address.")
+@click.option("--wallet", "-w", "walletname", default="wallet", help="Wallet to use.")
+@click.pass_context
+def cli(
+    ctx,
+    host: str,
+    walletname: str,
+):
+    ctx.ensure_object(dict)
+    ctx.obj["HOST"] = host
+    ctx.obj["WALLET_NAME"] = walletname
+    ctx.obj["WALLET"] = Wallet(ctx.obj["HOST"], f"data/{walletname}", walletname)
+    pass
+
+
+# https://github.com/pallets/click/issues/85#issuecomment-503464628
+def coro(f):
+    @wraps(f)
+    def wrapper(*args, **kwargs):
+        return asyncio.run(f(*args, **kwargs))
+
+    return wrapper
+
+
+@cli.command("mint", help="Mint tokens.")
+@click.argument("amount", type=int)
+@click.option("--hash", default="", help="Hash of the paid invoice.", type=str)
+@click.pass_context
+@coro
+async def mint(ctx, amount: int, hash: str):
+    wallet: Wallet = ctx.obj["WALLET"]
+    await m001_initial(db=wallet.db)
+    await wallet.load_proofs()
+    if amount and not hash:
+        print(f"Balance: {wallet.balance}")
+        r = await wallet.request_mint(amount)
+        print(r)
+
+    if amount and hash:
+        print(f"Balance: {wallet.balance}")
+        await wallet.mint(amount, hash)
+        print(f"Balance: {wallet.balance}")
+
+
+@cli.command("balance", help="See balance.")
+@click.pass_context
+@coro
+async def receive(ctx):
+    wallet: Wallet = ctx.obj["WALLET"]
+    await init_wallet(wallet)
+    wallet.status()
+
+
+@cli.command("send", help="Send tokens.")
+@click.argument("amount", type=int)
+@click.pass_context
+@coro
+async def send(ctx, amount: int):
+    wallet: Wallet = ctx.obj["WALLET"]
+    await init_wallet(wallet)
+    wallet.status()
+    _, send_proofs = await wallet.split(wallet.proofs, amount)
+    print(base64.urlsafe_b64encode(json.dumps(send_proofs).encode()).decode())
+
+
+@cli.command("receive", help="Receive tokens.")
+@click.argument("token", type=str)
+@click.pass_context
+@coro
+async def receive(ctx, token: str):
+    wallet: Wallet = ctx.obj["WALLET"]
+    await init_wallet(wallet)
+    wallet.status()
+    proofs = json.loads(base64.urlsafe_b64decode(token))
+    _, _ = await wallet.redeem(proofs)
+    wallet.status()
+
+
+@cli.command("burn", help="Burn spent tokens.")
+@click.argument("token", type=str)
+@click.pass_context
+@coro
+async def receive(ctx, token: str):
+    wallet: Wallet = ctx.obj["WALLET"]
+    await init_wallet(wallet)
+    wallet.status()
+    proofs = json.loads(base64.urlsafe_b64decode(token))
+    await wallet.invalidate(proofs)
+    wallet.status()