import os
from fastapi import FastAPI
from fastapi.responses import JSONResponse
from fastapi.middleware.cors import CORSMiddleware
import requests
from apscheduler.schedulers.background import BackgroundScheduler
from pydantic import BaseModel

from .db import init_db, save_articles, get_latest_articles
from .scraper import fetch_market_news, fetch_major_indices, fetch_overseas_news

app = FastAPI()

# CORS 설정 (프론트엔드 접근 허용)
app.add_middleware(
    CORSMiddleware,
    allow_origins=["*"],  # 운영 시에는 구체적인 도메인으로 제한하는 것이 좋음
    allow_credentials=True,
    allow_methods=["*"],
    allow_headers=["*"],
)

scheduler = BackgroundScheduler(timezone=os.getenv("TZ", "Asia/Seoul"))

# Windows AI Server URL (NAS .env에서 설정)
WINDOWS_AI_SERVER_URL = os.getenv("WINDOWS_AI_SERVER_URL", "http://192.168.0.5:8000")

@app.on_event("startup")
def on_startup():
    print(f"[StockLab] Startup. Windows AI Server URL: {WINDOWS_AI_SERVER_URL}")
    init_db()
    
    # 매일 아침 8시 뉴스 스크랩 (NAS 자체 수행)
    scheduler.add_job(run_scraping_job, "cron", hour="8", minute="0")
    
    # 앱 시작 시에도 한 번 실행 (데이터 없으면)
    if not get_latest_articles(1):
        run_scraping_job()
        
    scheduler.start()

def run_scraping_job():
    print("[StockLab] Starting news scraping...")
    
    # 1. 국내
    articles_kr = fetch_market_news()
    count_kr = save_articles(articles_kr)
    
    # 2. 해외
    articles_world = fetch_overseas_news()
    count_world = save_articles(articles_world)
    
    print(f"[StockLab] Saved {count_kr} domestic, {count_world} overseas articles.")

@app.get("/health")
def health():
    return {"ok": True}

@app.get("/api/stock/news")
def get_news(limit: int = 20, category: str = None):
    """최신 주식 뉴스 조회 (category: 'domestic' | 'overseas')"""
    return get_latest_articles(limit, category)

@app.get("/api/stock/indices")
def get_indices():
    """주요 지표(KOSPI 등) 실시간 크롤링 조회"""
    return fetch_major_indices()

@app.post("/api/stock/scrap")
def trigger_scrap():
    """수동 스크랩 트리거"""
    run_scraping_job()
    return {"ok": True}

# --- Trading API (Windows Proxy) ---

@app.get("/api/trade/balance")
def get_balance():
    """계좌 잔고 조회 (Windows AI Server Proxy)"""
    print(f"[Proxy] Requesting Balance from {WINDOWS_AI_SERVER_URL}...")
    try:
        resp = requests.get(f"{WINDOWS_AI_SERVER_URL}/trade/balance", timeout=5)
        
        if resp.status_code != 200:
            print(f"[ProxyError] Balance Error: {resp.status_code} {resp.text}")
            return JSONResponse(status_code=resp.status_code, content=resp.json())
            
        print("[Proxy] Balance Success")
        return resp.json()
    except Exception as e:
        print(f"[ProxyError] Connection Failed: {e}")
        return JSONResponse(
            status_code=500, 
            content={"error": "Connection Failed", "detail": str(e), "target": WINDOWS_AI_SERVER_URL}
        )

class OrderRequest(BaseModel):
    code: str
    qty: int
    price: int = 0  # 0이면 시장가
    type: str # 'buy' or 'sell'

@app.post("/api/trade/order")
def order_stock(req: OrderRequest):
    """주식 매수/매도 주문 (Windows AI Server Proxy)"""
    print(f"[Proxy] Order Request: {req.dict()} to {WINDOWS_AI_SERVER_URL}...")
    try:
        resp = requests.post(f"{WINDOWS_AI_SERVER_URL}/trade/order", json=req.dict(), timeout=10)
        
        if resp.status_code != 200:
            print(f"[ProxyError] Order Error: {resp.status_code} {resp.text}")
            return JSONResponse(status_code=resp.status_code, content=resp.json())
            
        return resp.json()
    except Exception as e:
        print(f"[ProxyError] Order Connection Failed: {e}")
        return JSONResponse(
            status_code=500,
            content={"error": "Connection Failed", "detail": str(e), "target": WINDOWS_AI_SERVER_URL}
        )

@app.post("/api/trade/auto")
def auto_trade():
    """AI 자동 매매 트리거 (Windows AI Server Proxy)"""
    print(f"[Proxy] Triggering Auto Trade at {WINDOWS_AI_SERVER_URL}...")
    try:
        resp = requests.post(f"{WINDOWS_AI_SERVER_URL}/trade/auto", timeout=120)
        
        if resp.status_code != 200:
            print(f"[ProxyError] Auto Trade Error: {resp.status_code} {resp.text}")
            return JSONResponse(status_code=resp.status_code, content=resp.json())

        print("[Proxy] Auto Trade Success")
        return resp.json()
    except Exception as e:
        print(f"[ProxyError] Auto Trade Connection Failed: {e}")
        return JSONResponse(
            status_code=500,
            content={"error": "Connection Failed", "detail": str(e), "target": WINDOWS_AI_SERVER_URL}
        )

@app.get("/api/stock/analyze")
def analyze_market():
    """Windows PC를 통한 AI 시장 분석"""
    print(f"[Proxy] Analyzing Market at {WINDOWS_AI_SERVER_URL}...")
    try:
        resp = requests.post(f"{WINDOWS_AI_SERVER_URL}/analyze/portfolio", timeout=120)
        
        if resp.status_code != 200:
             print(f"[ProxyError] Analyze Error: {resp.status_code} {resp.text}")
             return JSONResponse(status_code=resp.status_code, content=resp.json())
        
        return resp.json()
    except Exception as e:
        print(f"[ProxyError] Analyze Connection Failed: {e}")
        return JSONResponse(
            status_code=500,
            content={"error": "Connection Failed", "detail": str(e), "target": WINDOWS_AI_SERVER_URL}
        )

@app.get("/api/version")
def version():
    return {"version": os.getenv("APP_VERSION", "dev")}