import ujson
import asyncio
import aiohttp
import sqlite3
from datetime import datetime
from ml_models.prophet_model import PricePredictor
import yfinance as yf
import pandas as pd
from tqdm import tqdm
import concurrent.futures


def convert_symbols(symbol_list):
    """
    Converts the symbols in the given list from 'BTCUSD' and 'USDTUSD' format to 'BTC-USD' and 'USDT-USD' format.
    
    Args:
        symbol_list (list): A list of strings representing the symbols to be converted.
    
    Returns:
        list: A new list with the symbols converted to the desired format.
    """
    converted_symbols = []
    for symbol in symbol_list:
        # Determine the base and quote currencies
        base_currency = symbol[:-3]
        quote_currency = symbol[-3:]
        
        # Construct the new symbol in the desired format
        new_symbol = f"{base_currency}-{quote_currency}"
        converted_symbols.append(new_symbol)
    
    return converted_symbols

async def save_json(symbol, data):
    with open(f"json/price-analysis/{symbol}.json", 'w') as file:
        ujson.dump(data, file)

async def download_data(ticker, start_date, end_date):
    try:
        df = yf.download(ticker, start=start_date, end=end_date, interval="1d")
        df = df.reset_index()
        df = df[['Date', 'Adj Close']]
        df = df.rename(columns={"Date": "ds", "Adj Close": "y"})
        if len(df) > 252*2: #At least 2 years of history is necessary
            q_high= df["y"].quantile(0.99)
            q_low = df["y"].quantile(0.05)
            df = df[(df["y"] > q_low)]
            df = df[(df["y"] < q_high)]
            #df['y'] = df['y'].rolling(window=10).mean()
            #df = df.dropna()
            return df
    except Exception as e:
        print(e)

async def process_symbol(ticker, start_date, end_date, crypto_symbols):
    try:
        df = await download_data(ticker, start_date, end_date)
        data = PricePredictor().run(df)

        if ticker in crypto_symbols:
            ticker = ticker.replace('-','') #convert back from BTC-USD to BTCUSD
        await save_json(ticker, data)
    
    except Exception as e:
        print(e)


async def run():
    con = sqlite3.connect('stocks.db')
    etf_con = sqlite3.connect('etf.db')
    crypto_con = sqlite3.connect('crypto.db')

    cursor = con.cursor()
    cursor.execute("PRAGMA journal_mode = wal")
    #cursor.execute("SELECT DISTINCT symbol FROM stocks")
    #cursor.execute("SELECT DISTINCT symbol FROM stocks WHERE marketCap > 10E9 AND symbol NOT LIKE '%.%'")
    cursor.execute("SELECT DISTINCT symbol FROM stocks WHERE marketCap > 1E9")
    stock_symbols = [row[0] for row in cursor.fetchall()]

    etf_cursor = etf_con.cursor()
    etf_cursor.execute("PRAGMA journal_mode = wal")
    etf_cursor.execute("SELECT DISTINCT symbol FROM etfs WHERE totalAssets > 5E9")
    etf_symbols = [row[0] for row in etf_cursor.fetchall()]

    crypto_cursor = crypto_con.cursor()
    crypto_cursor.execute("PRAGMA journal_mode = wal")
    crypto_cursor.execute("SELECT DISTINCT symbol FROM cryptos")
    crypto_symbols = [row[0] for row in crypto_cursor.fetchall()]
    crypto_symbols = convert_symbols(crypto_symbols) #Convert BTCUSD to BTC-USD for yfinance

    con.close()
    etf_con.close()
    crypto_con.close()

    total_symbols = stock_symbols + etf_symbols + crypto_symbols
    print(f"Total tickers: {len(total_symbols)}")
    start_date = datetime(2000, 1, 1).strftime("%Y-%m-%d")
    end_date = datetime.today().strftime("%Y-%m-%d")

    chunk_size = len(total_symbols) // 70  # Divide the list into N chunks
    chunks = [total_symbols[i:i + chunk_size] for i in range(0, len(total_symbols), chunk_size)]
    for chunk in chunks:
        tasks = []
        for ticker in tqdm(chunk):
            tasks.append(process_symbol(ticker, start_date, end_date, crypto_symbols))

        await asyncio.gather(*tasks)

try:
    asyncio.run(run())
except Exception as e:
    print(e)