import MetaTrader5 as mt5
import smtplib
from email.mime.text import MIMEText
from email.mime.multipart import MIMEMultipart
from datetime import datetime
import json
import os

# -------------------------------------------
# Load project settings (config.json)
# -------------------------------------------
def load_config(filepath="config.json"):
    """Load configuration settings from JSON."""
    if not os.path.exists(filepath):
        raise FileNotFoundError(f"Config file not found: {filepath}")
    with open(filepath, "r") as f:
        return json.load(f)

# -------------------------------------------
# Initialize MT5 connection
# -------------------------------------------
def initialize_mt5(config):
    """Connect to a specific MT5 terminal using credentials."""
    mt5_path = config["mt5Pathway"]
    login = int(config["username"])
    password = config["password"]
    server = config["server"]

    if not mt5.initialize(path=mt5_path, login=login, password=password, server=server):
        raise ConnectionError(f"MT5 initialization failed: {mt5.last_error()}")

    account_info = mt5.account_info()
    if account_info:
        print(f"[MT5] Connected to account {account_info.login} on server {account_info.server}")
    else:
        raise ConnectionError(f"MT5 connected, but account info unavailable: {mt5.last_error()}")

# -------------------------------------------
# Fetch latest tick data
# -------------------------------------------
def get_latest_tick(symbol):
    """Fetch the latest market tick for a given symbol."""
    tick = mt5.symbol_info_tick(symbol)
    if tick is None:
        raise ValueError(f"Failed to get tick for {symbol}: {mt5.last_error()}")
    return tick

# -------------------------------------------
# Send email alert
# -------------------------------------------
def send_email_alert(symbol, tick, smtp_config):
    """Send an email with tick data for a given symbol."""
    # Email message body
    message_body = (
        f"MT5 Market Alert\n\n"
        f"Symbol: {symbol}\n"
        f"Time: {datetime.fromtimestamp(tick.time)}\n"
        f"Bid: {tick.bid}\n"
        f"Ask: {tick.ask}\n"
    )

    msg = MIMEMultipart()
    msg['From'] = smtp_config["sender_email"]
    msg['To'] = smtp_config["recipient_email"]
    msg['Subject'] = f"MT5 Alert - {symbol} Tick Update"
    msg.attach(MIMEText(message_body, "plain"))

    try:
        with smtplib.SMTP(smtp_config["smtp_server"], smtp_config["smtp_port"]) as server:
            server.starttls()  # Secure the connection
            server.login(smtp_config["sender_email"], smtp_config["sender_password"])
            server.send_message(msg)
        print(f"[EMAIL] Alert sent successfully to {smtp_config['recipient_email']}")
    except Exception as e:
        raise RuntimeError(f"Failed to send email: {e}")

# -------------------------------------------
# Main test function
# -------------------------------------------
def main():
    """Test email alert by fetching tick data and sending it."""
    try:
        # Load config
        config = load_config("config.json")

        # SMTP configuration (edit these)
        smtp_config = {
            "smtp_server": "smtp.gmail.com",
            "smtp_port": 587,
            "sender_email": "your_email@gmail.com",          # replace
            "sender_password": "your_app_password",          # Gmail App Password
            "recipient_email": "recipient_email@example.com" # replace
        }

        # Initialize MT5
        initialize_mt5(config)

        # Fetch latest tick
        symbol = "EURUSD"
        tick = get_latest_tick(symbol)

        # Send alert
        send_email_alert(symbol, tick, smtp_config)

    except Exception as e:
        print(f"[ERROR] {e}")
    finally:
        mt5.shutdown()
        print("[MT5] Connection closed.")

# -------------------------------------------
# Run directly
# -------------------------------------------
if __name__ == "__main__":
    main()