lnbits-legend/lnbits/core/migrations.py

from sqlalchemy.exc import OperationalError # type: ignore


async def m000_create_migrations_table(db):
    await db.execute(
        """
    CREATE TABLE dbversions (
        db TEXT PRIMARY KEY,
        version INT NOT NULL
    )
    """
    )


async def m001_initial(db):
    """
    Initial LNbits tables.
    """
    await db.execute(
        """
        CREATE TABLE IF NOT EXISTS accounts (
            id TEXT PRIMARY KEY,
            email TEXT,
            pass TEXT
        );
    """
    )
    await db.execute(
        """
        CREATE TABLE IF NOT EXISTS extensions (
            user TEXT NOT NULL,
            extension TEXT NOT NULL,
            active BOOLEAN DEFAULT 0,

            UNIQUE (user, extension)
        );
    """
    )
    await db.execute(
        """
        CREATE TABLE IF NOT EXISTS wallets (
            id TEXT PRIMARY KEY,
            name TEXT NOT NULL,
            user TEXT NOT NULL,
            adminkey TEXT NOT NULL,
            inkey TEXT
        );
    """
    )
    await db.execute(
        """
        CREATE TABLE IF NOT EXISTS apipayments (
            payhash TEXT NOT NULL,
            amount INTEGER NOT NULL,
            fee INTEGER NOT NULL DEFAULT 0,
            wallet TEXT NOT NULL,
            pending BOOLEAN NOT NULL,
            memo TEXT,
            time TIMESTAMP NOT NULL DEFAULT (strftime('%s', 'now')),

            UNIQUE (wallet, payhash)
        );
    """
    )

    await db.execute(
        """
        CREATE VIEW IF NOT EXISTS balances AS
        SELECT wallet, COALESCE(SUM(s), 0) AS balance FROM (
            SELECT wallet, SUM(amount) AS s  -- incoming
            FROM apipayments
            WHERE amount > 0 AND pending = 0  -- don't sum pending
            GROUP BY wallet
            UNION ALL
            SELECT wallet, SUM(amount + fee) AS s  -- outgoing, sum fees
            FROM apipayments
            WHERE amount < 0  -- do sum pending
            GROUP BY wallet
        )
        GROUP BY wallet;
    """
    )


async def m002_add_fields_to_apipayments(db):
    """
    Adding fields to apipayments for better accounting,
    and renaming payhash to checking_id since that is what it really is.
    """
    try:
        await db.execute("ALTER TABLE apipayments RENAME COLUMN payhash TO checking_id")
        await db.execute("ALTER TABLE apipayments ADD COLUMN hash TEXT")
        await db.execute("CREATE INDEX by_hash ON apipayments (hash)")
        await db.execute("ALTER TABLE apipayments ADD COLUMN preimage TEXT")
        await db.execute("ALTER TABLE apipayments ADD COLUMN bolt11 TEXT")
        await db.execute("ALTER TABLE apipayments ADD COLUMN extra TEXT")

        import json

        rows = await (await db.execute("SELECT * FROM apipayments")).fetchall()
        for row in rows:
            if not row["memo"] or not row["memo"].startswith("#"):
                continue

            for ext in ["withdraw", "events", "lnticket", "paywall", "tpos"]:
                prefix = "#" + ext + " "
                if row["memo"].startswith(prefix):
                    new = row["memo"][len(prefix) :]
                    await db.execute(
                        """
                        UPDATE apipayments SET extra = ?, memo = ?
                        WHERE checking_id = ? AND memo = ?
                        """,
                        (json.dumps({"tag": ext}), new, row["checking_id"], row["memo"]),
                    )
                    break
    except OperationalError:
        # this is necessary now because it may be the case that this migration will
        # run twice in some environments.
        # catching errors like this won't be necessary in anymore now that we
        # keep track of db versions so no migration ever runs twice.
        pass