from decimal import Decimal
from typing import Optional

from pydantic import BaseModel, Field, ConfigDict


class HTTPHeaders(BaseModel):
    request_id: str = Field(alias="x-amzn-requestid", min_length=36, max_length=36)
    content_type: str = Field(alias="content-type", min_length=26, max_length=26)
    # 'content-length': '1255',
    content_length: str = Field(alias="content-length", min_length=2)
    # 'Mon, 15 Jan 2024 23:40:32 GMT'
    date: str = Field()

    connection: Optional[str] = Field(default=None)  # 'close'


class ResponseMetadata(BaseModel):
    model_config = ConfigDict(extra="forbid", validate_assignment=True)

    request_id: str = Field(alias="RequestId", min_length=36, max_length=36)
    status_code: int = Field(alias="HTTPStatusCode", ge=200, le=599)
    headers: HTTPHeaders = Field(alias="HTTPHeaders")
    retry_attempts: int = Field(alias="RetryAttempts", ge=0)


class AMTAccount(BaseModel):
    model_config = ConfigDict(extra="ignore", validate_assignment=True)

    # Remaining available AWS Billing usage if you have enabled AWS Billing.
    available_balance: Decimal = Field()
    onhold_balance: Decimal = Field(default=Decimal(0))

    # --- Properties ---

    @property
    def is_healthy(self) -> bool:
        # A healthy account is one with at least $2,500 worth of
        # credit available to it
        return self.available_balance >= 2_500