import logging
import requests

import config
from db.db import mark_signal_alerted

logger = logging.getLogger(__name__)


def format_signal(signal: dict) -> str:
    filing = signal.get("filing", {})
    ticker = signal["ticker"]
    insider = filing.get("insider_name", "Unknown")
    role = filing.get("role", "Unknown")
    tx_date = filing.get("transaction_date", "")
    shares = filing.get("shares")
    price = filing.get("price")
    total_value = filing.get("total_value") or signal.get("total_cluster_value", 0)
    cluster_size = signal["cluster_size"]
    score = signal["score"]
    is_10b51 = "Yes" if filing.get("is_10b51") else "No"
    accession = filing.get("accession_number", "")

    shares_str = f"{shares:,.0f}" if shares else "N/A"
    price_str = f"${price:,.2f}" if price else "N/A"
    value_str = f"${total_value:,.0f}" if total_value else "N/A"
    edgar_url = f"https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&type=4&dateb=&owner=include&count=10&search_text=&ticker={ticker}"

    return (
        f"*INSIDER BUY SIGNAL*\n"
        f"Ticker:   ${ticker}\n"
        f"Insider:  {insider} ({role})\n"
        f"Date:     {tx_date}\n"
        f"Shares:   {shares_str} @ {price_str} = {value_str}\n"
        f"Cluster:  {cluster_size} insider(s) in last {config.CLUSTER_WINDOW_DAYS} days\n"
        f"Score:    {score}\n"
        f"10b5-1:   {is_10b51}\n"
        f"EDGAR:    {edgar_url}"
    )


def send_slack_alert(signal: dict) -> bool:
    if not config.SLACK_WEBHOOK_URL:
        logger.warning("SLACK_WEBHOOK_URL not configured")
        return False

    if signal.get("score", 0) < config.SCORE_ALERT_THRESHOLD:
        logger.debug(f"Signal score {signal['score']} below threshold {config.SCORE_ALERT_THRESHOLD}")
        return False

    text = format_signal(signal)
    try:
        resp = requests.post(
            config.SLACK_WEBHOOK_URL,
            json={"text": text},
            timeout=10,
        )
        resp.raise_for_status()
        mark_signal_alerted(signal["id"])
        logger.info(f"Slack alert sent for {signal['ticker']}")
        return True
    except Exception as e:
        logger.error(f"Failed to send Slack alert: {e}")
        return False