from __future__ import annotations
import os, json, threading
from flask import Flask, jsonify, render_template, abort
from trading_bot import main as trading_bot_main  # dostosuj jeśli moduł nazywa się inaczej

# Katalog projektu (tam gdzie leży ten plik)
BASE_DIR = os.path.dirname(os.path.abspath(__file__))

# Domyślnie dane są w głównym katalogu projektu; można nadpisać przez env DATA_DIR
DATA_DIR = os.environ.get("DATA_DIR", BASE_DIR)

def _load_json(name: str):
    path = os.path.join(DATA_DIR, name)
    if not os.path.isfile(path):
        return None
    try:
        with open(path, "r", encoding="utf-8") as f:
            return json.load(f)
    except Exception:
        return None

app = Flask(
    __name__,
    static_folder="static",
    static_url_path="/static",   # <-- ważne: z wiodącym slashem
    template_folder="templates",
)

@app.route("/")
def index():
    return render_template("index.html")

@app.route("/api/snapshot")
def api_snapshot():
    data = _load_json("snapshot.json")
    if data is None:
        abort(404, description="snapshot.json not found")
    return jsonify(data)

@app.route("/api/history")
def api_history():
    data = _load_json("portfolio_history.json")
    if data is None:
        abort(404, description="portfolio_history.json not found")
    return jsonify(data)

@app.route("/api/positions")
def api_positions():
    data = _load_json("positions.json")
    if data is None:
        data = []
    return jsonify(data)

@app.route("/api/trades")
def api_trades():
    data = _load_json("trade_log.json")
    if data is None:
        data = []
    return jsonify(data)

def start_trading_bot():
    """Uruchamia bota w osobnym wątku."""
    trading_thread = threading.Thread(target=trading_bot_main, daemon=True)
    trading_thread.start()
    print("[Flask] Trading bot uruchomiony w wątku.")

if __name__ == "__main__":
    print(f"[Flask] DATA_DIR: {DATA_DIR}")
    start_trading_bot()
    app.run(host="0.0.0.0", port=int(os.environ.get("PORT", 5000)), debug=True)