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Update main.py
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main.py
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from fastapi import FastAPI
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from pydantic import BaseModel
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import yfinance as yf
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import ta
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import pandas as pd
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import numpy as np
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from tensorflow.keras.models import load_model
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import joblib
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import warnings
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#
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precio_actual =
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#
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df
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}
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from fastapi import FastAPI
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from pydantic import BaseModel
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import yfinance as yf
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import ta
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import pandas as pd
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import numpy as np
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from tensorflow.keras.models import load_model
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import joblib
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import warnings
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import os
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warnings.filterwarnings('ignore')
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app = FastAPI()
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print("🚀 Servidor FastAPI encendido. Esperando peticiones de n8n...")
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# =========================================================
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# 🚨 TRUCO ANTI-CRASH: Arrancamos con la RAM vacía
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# =========================================================
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MODELOS = {}
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# IMPORTANTE: Revisa que estos nombres coincidan EXACTAMENTE con los que subiste
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CONFIG = {
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"ORO": {"ticker": "GC=F", "modelo": "cerebro_oro_v1.keras", "scaler": "scaler_oro_v1.pkl"},
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"NVDA": {"ticker": "NVDA", "modelo": "cerebro_nvidia_v1.keras", "scaler": "scaler_nvda.pkl"},
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"WTI": {"ticker": "CL=F", "modelo": "cerebro_wti.keras", "scaler": "scaler_wti.pkl"},
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"NASDAQ": {"ticker": "^NDX", "modelo": "cerebro_nasdaq.keras", "scaler": "scaler_nasdaq.pkl"}
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}
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# 🚨 NUEVO: El servidor ahora espera recibir el símbolo y el sentimiento
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class PredictionRequest(BaseModel):
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symbol: str
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sentimiento: float = 0.0 # Si n8n no manda nada, asume Neutral (0.0)
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@app.post("/predecir")
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def predecir_mercado(req: PredictionRequest):
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activo_solicitado = req.symbol.upper()
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traductor = {
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"GC=F": "ORO", "XAUUSD=X": "ORO", "ORO": "ORO",
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"NVDA": "NVDA",
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"CL=F": "WTI", "WTI": "WTI", "USOIL": "WTI",
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"^IXIC": "NASDAQ", "^NDX": "NASDAQ", "NQ=F": "NASDAQ", "NASDAQ": "NASDAQ"
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}
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if activo_solicitado not in traductor:
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return {"error": f"Activo no soportado. Usa uno de estos: {list(CONFIG.keys())}"}
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id_activo = traductor[activo_solicitado]
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# =========================================================
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# 🚨 LAZY LOADING: Solo carga la IA a la RAM si n8n la pide
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# =========================================================
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if id_activo not in MODELOS:
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print(f"🧠 Despertando IA de {id_activo} por primera vez...")
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archivo_mod = CONFIG[id_activo]["modelo"]
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archivo_scl = CONFIG[id_activo]["scaler"]
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if not os.path.exists(archivo_mod) or not os.path.exists(archivo_scl):
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return {"error": f"¡Falta el archivo {archivo_mod} o {archivo_scl} en Hugging Face!"}
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try:
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MODELOS[id_activo] = {
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"ticker": CONFIG[id_activo]["ticker"],
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"modelo": load_model(archivo_mod),
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"escalador": joblib.load(archivo_scl)
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}
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except Exception as e:
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return {"error": f"Error al cargar la IA de {id_activo}: {str(e)}"}
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ticker = MODELOS[id_activo]["ticker"]
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modelo = MODELOS[id_activo]["modelo"]
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escalador = MODELOS[id_activo]["escalador"]
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# 🎯 Obtener Precio Vivo
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try:
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df_minuto = yf.download(ticker, period="1d", interval="1m", progress=False)
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if isinstance(df_minuto.columns, pd.MultiIndex):
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df_minuto.columns = df_minuto.columns.droplevel(1)
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precio_actual = float(df_minuto['Close'].dropna().iloc[-1])
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except:
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precio_actual = 0.0
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# 🧠 Obtener Datos para IA
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df = yf.download(ticker, period="150d", interval="1d", progress=False, auto_adjust=True)
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if isinstance(df.columns, pd.MultiIndex):
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df.columns = df.columns.droplevel(1)
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for col in ['Open', 'High', 'Low', 'Close', 'Volume']:
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df[col] = df[col].astype(float)
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if precio_actual == 0.0:
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precio_actual = float(df['Close'].dropna().iloc[-1])
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# Calcular Indicadores Técnicos
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df['SMA_20'] = ta.trend.sma_indicator(df['Close'], window=20)
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df['SMA_50'] = ta.trend.sma_indicator(df['Close'], window=50)
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df['RSI_14'] = ta.momentum.rsi(df['Close'], window=14)
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df['MACD'] = ta.trend.macd(df['Close'])
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df['MACD_Signal'] = ta.trend.macd_signal(df['Close'])
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df['ATR_14'] = ta.volatility.average_true_range(df['High'], df['Low'], df['Close'], window=14)
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# =========================================================
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# 🚨 INYECTAMOS EL SENTIMIENTO RECIBIDO DESDE N8N
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# =========================================================
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df['Sentimiento'] = req.sentimiento
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df.dropna(inplace=True)
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# 🚨 Matriz final con las 12 VARIABLES 🚨
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features = ['Open', 'High', 'Low', 'Close', 'Volume', 'SMA_20', 'SMA_50', 'RSI_14', 'MACD', 'MACD_Signal', 'ATR_14', 'Sentimiento']
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X_live = df.tail(60)[features].values.astype(np.float32)
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X_scaled = escalador.transform(X_live)
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X_reshaped = np.reshape(X_scaled, (1, 60, len(features)))
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# Predicción
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prediccion = float(modelo.predict(X_reshaped, verbose=0)[0][0])
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decision = "LONG (COMPRAR)" if prediccion > 0.5 else "SHORT (VENDER/ESPERAR)"
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confianza = round(prediccion * 100, 2) if prediccion > 0.5 else round((1 - prediccion) * 100, 2)
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return {
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"symbol": req.symbol,
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"ticker_ia": ticker,
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"precio_actual": precio_actual,
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"decision_ia": decision,
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"confianza": f"{confianza}%",
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"probabilidad_matematica": prediccion,
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"sentimiento_aplicado": req.sentimiento # Te lo devuelvo para que confirmes que llegó bien
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}
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