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"""LBMA Fixing Standard Model."""
from datetime import (
date as dateType,
datetime,
)
from typing import Literal, Optional
from pydantic import Field, field_validator
from openbb_core.provider.abstract.data import Data
from openbb_core.provider.abstract.query_params import QueryParams
from openbb_core.provider.utils.descriptions import (
DATA_DESCRIPTIONS,
QUERY_DESCRIPTIONS,
)
class LbmaFixingQueryParams(QueryParams):
"""
LBMA Fixing Query.
Source: https://www.lbma.org.uk/prices-and-data/precious-metal-prices#/table
"""
asset: Literal["gold", "silver"] = Field(
description="The metal to get price fixing rates for.",
default="gold",
)
start_date: Optional[dateType] = Field(
default=None,
description=QUERY_DESCRIPTIONS.get("start_date", ""),
)
end_date: Optional[dateType] = Field(
default=None,
description=QUERY_DESCRIPTIONS.get("end_date", ""),
)
@field_validator("asset", mode="before", check_fields=False)
@classmethod
def to_lower(cls, v: Optional[str]) -> Optional[str]:
"""Convert field to lowercase."""
return v.lower() if v else v
class LbmaFixingData(Data):
"""LBMA Fixing Data. Historical fixing prices in USD, GBP and EUR."""
date: dateType = Field(description=DATA_DESCRIPTIONS.get("date", ""))
usd_am: Optional[float] = Field(
default=None,
description="AM fixing price in USD.",
)
usd_pm: Optional[float] = Field(
default=None,
description="PM fixing price in USD.",
)
gbp_am: Optional[float] = Field(
default=None,
description="AM fixing price in GBP.",
)
gbp_pm: Optional[float] = Field(
default=None,
description="PM fixing price in GBP.",
)
euro_am: Optional[float] = Field(
default=None,
description="AM fixing price in EUR.",
)
euro_pm: Optional[float] = Field(
default=None,
description="PM fixing price in EUR.",
)
usd: Optional[float] = Field(
default=None,
description="Daily fixing price in USD.",
)
gbp: Optional[float] = Field(
default=None,
description="Daily fixing price in GBP.",
)
eur: Optional[float] = Field(
default=None,
description="Daily fixing price in EUR.",
)
@field_validator("date", mode="before", check_fields=False)
@classmethod
def validate_date(cls, v) -> dateType:
"""Validate date."""
if isinstance(v, datetime):
return v.date()
return datetime.strptime(v, "%Y-%m-%d").date()
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