from dataclasses import dataclass, field
import secrets

from .http import get_json


@dataclass
class SignalItem:
    signal_key: str = ""; code: str = ""; name: str = ""; desc: str = ""; last_close: float = 0
    tech_indicator: dict[str, float] = field(default_factory=dict)

@dataclass
class SignalResult:
    code: str = ""; total: int = 0; updated: str = ""; data: dict[str, SignalItem] = field(default_factory=dict); message: str = ""


def fetch_signal(api_host: str, sub_url: str, timeout: float = 5.0) -> SignalResult:
    url = f"{api_host}{sub_url}?t={secrets.token_urlsafe(12)}"
    raw = get_json(url, timeout)
    items = {code: SignalItem(**item) for code, item in (raw.get("data") or {}).items()}
    return SignalResult(raw.get("code", ""), raw.get("total", 0), raw.get("updated", ""), items, raw.get("message", ""))


def init_signals(global_config, allow: list[str]) -> list[SignalItem]:
    result = []
    for key, cfg in global_config.signals.items():
        if key in allow:
            for item in fetch_signal(global_config.api_host, cfg.url).data.values(): item.signal_key = key; result.append(item)
    return result