"""
ForexBot2 — Data-provider package
==================================
One class per provider, all subclassing `BaseDataProvider` (which owns
caching, validation, boundary guarantees, and range pagination — the
behavior the signal pipeline depends on).

Adding a provider = one module implementing `_fetch_raw` + one registry
entry + one config.json `data_providers` block. The live feed is selected
by config.json `data_providers.active`; registration alone changes
nothing.
"""

from typing import Dict

from app_config import AppConfigError, get_app_config
from config import PlatformConfig

from providers.base import BaseDataProvider, DataIntegrityError, _is_forex_weekend
from providers.twelve_data import TwelveDataProvider
from providers.oanda import OandaDataError, OandaDataProvider
from providers.tiingo import TiingoDataError, TiingoDataProvider

#: config.json data_providers.active selects from here.
PROVIDER_REGISTRY: Dict[str, type] = {
    "twelve_data": TwelveDataProvider,
    "oanda": OandaDataProvider,
    "tiingo": TiingoDataProvider,
}


def make_data_provider(config: PlatformConfig) -> BaseDataProvider:
    """Build the ACTIVE data provider (config.json: data_providers.active)."""
    name = get_app_config().active_provider
    cls = PROVIDER_REGISTRY.get(name)
    if cls is None:
        raise AppConfigError(
            f'Unknown data provider "{name}"; '
            f"registered: {sorted(PROVIDER_REGISTRY)}")
    return cls(config)


__all__ = [
    "BaseDataProvider",
    "DataIntegrityError",
    "OandaDataError",
    "OandaDataProvider",
    "TiingoDataError",
    "TiingoDataProvider",
    "TwelveDataProvider",
    "PROVIDER_REGISTRY",
    "make_data_provider",
    "_is_forex_weekend",
]