def get_reactions(
    post: str | None, id_: int | None = None, oconn: sqlite3.Connection | None = None
) -> list[Reaction]:
    if not oconn:
        check_db()
        conn, c = row_conn()
    else:
        conn = oconn
        c = conn.cursor()

    if id_:
        c.execute("select * from reactions where id = ?", (id_,))
        rows = [c.fetchone()]
    else:
        c.execute("select * from reactions where post = ?", (post,))
        rows = c.fetchall()

    reactions = []
    rows = [row for row in rows if row]

    for row in rows:
        reaction = make_reaction(dict(row))
        c.execute("select * from users where username = ?", (row["user"],))
        user = c.fetchone()

        if user:
            reaction.uname = user["name"]

        reactions.append(reaction)

    if not oconn:
        conn.close()

    return reactions