class BindAuthCodeTool:
    name = 'bind_auth_code'
    requires_session = False

    def __init__(self, auth_client=None):
        self.auth_client = auth_client

    def metadata(self):
        return {
            'name': self.name,
            'description': 'Bind a one-time Workbuddy auth code and create the local MCP session.',
            'input_schema': {
                'type': 'object',
                'properties': {
                    'auth_code': {
                        'type': 'string',
                        'description': 'One-time auth code copied from the FMS backend.',
                    },
                },
                'required': ['auth_code'],
            },
        }

    def call(self, auth_code, request_id=''):
        if self.auth_client is None:
            raise RuntimeError('auth client is required for bind_auth_code')
        auth_code = str(auth_code or '').strip()
        if not auth_code:
            raise ValueError('auth_code is required')
        response = self.auth_client.exchange(auth_code)
        if (response.get('code') or '') != 'MCP_0000':
            raise RuntimeError(response.get('msg') or 'auth_code bind failed')
        data = response.get('data') or {}
        return {
            'code': 'MCP_0000',
            'msg': 'success',
            'data': {
                'status': 'bound',
                'summary': '绑定成功，可以继续使用 query_order 查询订单。',
                'expire_time': data.get('expire_time'),
                'tips': [
                    '后续工具调用会自动使用本机已保存的 MCP 会话。',
                    '如果授权失效，请回后台重新获取 Workbuddy 授权码。',
                ],
            },
            'meta': {
                'request_id': request_id,
            },
        }