import os
from dataclasses import dataclass, field
from typing import ClassVar


@dataclass(slots=True)
class Config:
    project_id: ClassVar[str] = os.environ.get('GCP_PROJECT', 'delphi-stage')
    instance_id: ClassVar[str] = os.environ.get(
        'INSTANCE_ID', 'stg-delphi-consumer-analytics-ssd')
    cluster_id: ClassVar[str] = os.environ.get('CLUSTER_ID',
                                               'stg-delphi-ca-ssd-us-east4-b')
    cluster_baseline: ClassVar[int] = int(
        os.environ.get('CLUSTER_BASELINE', '5'))
    cluster_max_size: ClassVar[int] = int(
        os.environ.get('CLUSTER_MAX_SIZE', '30'))
    slack_token: ClassVar[str] = os.environ.get('SLACK_TOKEN', '')
    slack_channel_id: ClassVar[str] = os.environ.get('SLACK_CHANNEL_ID', '')

    @classmethod
    def get_config_str(cls) -> str:
        return f"""project_id: {cls.project_id}
instance_id: {cls.instance_id}
cluster_id: {cls.cluster_id}
cluster_baseline: {cls.cluster_baseline}
cluster_max_size: {cls.cluster_max_size}
"""