{% macro setup_script(values) -%}
import os
import hmac
import secrets

print('Updating bitcoin.conf...')

username = '{{ values.bitcoin.rpc_user }}'
password = '{{ values.bitcoin.rpc_password }}'
salt = secrets.token_hex(16)
password_hmac = hmac.new(salt.encode('utf-8'), password.encode('utf-8'), 'SHA256').hexdigest()
rpc_auth_line = f'rpcauth={username}:{salt}${password_hmac}'
conf_path = '{{ values.consts.bitcoin_dir }}/bitcoin.conf'

os.makedirs(os.path.dirname(conf_path), exist_ok=True)

try:
    with open(conf_path, 'r') as f:
        content = f.read()
except FileNotFoundError:
    content = ''


with open(conf_path, 'w') as f:
    if 'rpcauth=' not in content:
        print('Adding rpcauth to config...')
        f.write(rpc_auth_line + '\n' + content)
    else:
        lines = content.split('\n')
        for line in lines:
            if line.startswith('rpcauth='):
                line = rpc_auth_line
            f.write(line + '\n')
    print('Config updated!')

exit(0)
{%- endmacro -%}