"""
BrainSteel Fin — USD Décio Agent
Estrategista para câmbio USD/BRL
"""
import os, json, requests
from datetime import datetime

class USDDecioAgent:
    def __init__(self, brief_data):
        self.name = "USDDecio"
        self.brief_data = brief_data
        self.openrouter_key = os.getenv("DECIO_API_KEY", os.getenv("OPENROUTER_API_KEY", ""))
        self.openrouter_url = "https://openrouter.ai/api/v1/chat/completions"
        self.model = "deepseek/deepseek-v4-flash:free"

    def _calc_levels(self, price, action):
        """Stop Loss 1%, Take Profit 2% para câmbio."""
        if action == "BUY":
            return round(price * 0.99, 4), round(price * 1.02, 4)
        elif action == "SELL":
            return round(price * 1.01, 4), round(price * 0.98, 4)
        return 0, 0

    def run(self):
        signal = self.brief_data.get("signal", "NEUTRO")
        confidence = self.brief_data.get("confidence", 50)
        price = self.brief_data.get("price", 0)
        ptax = self.brief_data.get("ptax", 0)
        selic = self.brief_data.get("selic", 0)
        dxy = self.brief_data.get("dxy", 0)
        change_24h = self.brief_data.get("change_24h", 0)

        # Regra: confiança < 70% = HOLD
        if confidence < 70 or signal == "NEUTRO":
            return {
                "decision": "HOLD",
                "confidence": confidence,
                "stop_loss": 0,
                "take_profit": 0,
                "justification": "Confiança abaixo de 70% ou sinal neutro",
            }

        # Decisão
        action = "HOLD"
        sl, tp = 0, 0
        if signal == "ALTA":
            action = "BUY"
            sl, tp = self._calc_levels(price, action)
        elif signal == "BAIXA":
            action = "SELL"
            sl, tp = self._calc_levels(price, action)

        justification = f"""Dólar {signal}. PTAX R$ {ptax:.4f}. Selic {selic:.2f}%. DXY {dxy:.2f}. Variação 24h {change_24h:+.2f}%. Confiança {confidence}%."""

        return {
            "decision": action,
            "confidence": confidence,
            "stop_loss": sl,
            "take_profit": tp,
            "justification": justification,
        }