worker.py

import os
import sys
import subprocess

def _ensure_dependencies():
    try:
        import redis
        import playwright
    except ImportError:
        print("[-] Missing dependencies. Auto-installing 'redis' and 'playwright'...")
        subprocess.check_call([sys.executable, "-m", "pip", "install", "redis", "playwright"])
        print("[-] Installing Playwright chromium browser...")
        subprocess.check_call([sys.executable, "-m", "playwright", "install", "chromium"])
        print("[+] Installation complete. Restarting worker...")
        os.execv(sys.executable, [sys.executable] + sys.argv)

_ensure_dependencies()

import json
import logging
import signal
import asyncio
import uuid
import time
import socket
from typing import Any, Dict, List, Optional
import redis.asyncio as redis

# Playwright imports
from playwright.async_api import async_playwright, Page, Browser, BrowserContext

# -----------------------------------------------------------------------------
# Configuration
# -----------------------------------------------------------------------------
REDIS_HOST = os.getenv("REDIS_HOST", "54.244.160.21")
REDIS_PORT = int(os.getenv("REDIS_PORT", "6379"))
REDIS_PASSWORD = os.getenv("REDIS_PASSWORD", None)

LEAD_QUEUE        = "lead_queue"
PROCESSING_QUEUE  = "processing_queue"
RESULT_QUEUE      = "result_queue"
ACCOUNT_POOL_READY    = "account_pool:ready"
ACCOUNT_POOL_ASSIGNED = "account_pool:assigned"
ACCOUNT_POOL_PROCESSING = "account_pool:processing"
ACCOUNT_POOL_COOLDOWN = "account_pool:cooldown"
RETRY_COUNT_KEY   = "retry_count"

# Key that stores a SET of lead emails that are currently in-flight or already done.
# This is the deduplication guard: a lead email is added here before processing
# and removed only if it fails (so it can be retried). If it succeeds it stays
# forever (within the day) so it cannot be sent again.
SENT_LEADS_SET    = "leads:sent_today"

WORKER_TASKS    = int(os.getenv("WORKER_THREADS", "10"))
BATCH_SIZE      = 10          # leads per account session
DEFAULT_COOLDOWN_SECONDS = int(os.getenv("DEFAULT_COOLDOWN_SECONDS", "600"))  # 10 minutes between batches
RESET_SENT_DEDUP_DAILY = os.getenv("RESET_SENT_DEDUP_DAILY", "0").lower() in {"1", "true", "yes", "on"}
ADMIN_SETTINGS_FILE = os.getenv(
    "ADMIN_SETTINGS_FILE",
    r"C:\Users\PRADIP MUDI\Downloads\Telegram Desktop\lead_processor\admin_state.json"
)
MAX_RETRIES     = 3
POLL_TIMEOUT    = 5           # seconds to block on BRPOPLPUSH

logging.basicConfig(level=logging.INFO, format="%(asctime)s [%(levelname)s] %(message)s")
logger = logging.getLogger("worker")

_shutdown_requested = False

# Machine identity (1 machine = 1 worker in dashboard)
MACHINE_ID = socket.gethostname()

# Shared stats across all coroutines on this machine
_machine_stats = {
    "total_done": 0,
    "total_failed": 0,
    "threads": {},   # task_id -> current_action
}
_stats_lock = asyncio.Lock()

def _signal_handler(signum, frame):
    global _shutdown_requested
    logger.info("Shutdown signal received. Draining worker pool...")
    _shutdown_requested = True

signal.signal(signal.SIGINT,  _signal_handler)
signal.signal(signal.SIGTERM, _signal_handler)

_redis_pool = None

def get_redis_pool():
    global _redis_pool
    if _redis_pool is None:
        _redis_pool = redis.ConnectionPool(
            host=REDIS_HOST, port=REDIS_PORT, password=REDIS_PASSWORD,
            decode_responses=True, max_connections=50
        )
    return _redis_pool

async def get_cooldown_seconds(client: redis.Redis) -> int:
    try:
        raw = await client.get("config:account_cooldown_seconds")
        if raw is None:
            if os.path.exists(ADMIN_SETTINGS_FILE):
                with open(ADMIN_SETTINGS_FILE, "r", encoding="utf-8") as f:
                    settings = json.load(f).get("settings", {})
                raw = settings.get("cooldown_seconds")
            if raw is None:
                return DEFAULT_COOLDOWN_SECONDS
        value = int(raw)
        return max(60, min(value, 24 * 3600))
    except Exception as e:
        logger.warning(f"Could not read cooldown setting, using default: {e}")
        return DEFAULT_COOLDOWN_SECONDS

# -----------------------------------------------------------------------------
# Automation Engine
# -----------------------------------------------------------------------------
class AutomationEngine:
    """Robust Playwright automation engine"""

    def __init__(self):
        self.playwright = None
        self.browser: Optional[Browser] = None
        self.context: Optional[BrowserContext] = None
        self.page: Optional[Page] = None

    async def start(self, headless: bool = True):
        self.playwright = await async_playwright().start()
        browser_options = {
            "headless": headless,
            "args": [
                "--no-sandbox",
                "--disable-setuid-sandbox",
                "--disable-dev-shm-usage",
                "--disable-accelerated-2d-canvas",
                "--no-first-run",
                "--no-zygote",
                "--single-process",
                "--disable-gpu"
            ]
        }
        self.browser = await self.playwright.chromium.launch(**browser_options)
        
        # Use a realistic User-Agent to avoid "Headless" detection
        user_agent = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36"
        
        self.context = await self.browser.new_context(
            user_agent=user_agent,
            locale="en-US",
            timezone_id="UTC",
            viewport={"width": 1280, "height": 800}
        )
        self.page = await self.context.new_page()
        # Aggressive network blocking for super low bandwidth
        excluded_resource_types = {"image", "font", "media"}

        async def route_interceptor(route):
            if route.request.resource_type in excluded_resource_types:
                return await route.abort()
            return await route.continue_()

        await self.page.route("**/*", route_interceptor)

    async def stop(self):
        if self.context:
            await self.context.close()
        if self.browser:
            await self.browser.close()
        if self.playwright:
            await self.playwright.stop()

    async def login_microsoft(self, email: str, temp_pass: str) -> bool:
        """Robust Login using TAP (Temporary Access Pass) flow with branching logic"""
        try:
            logger.info(f"Logging in as {email} using TAP flow...")
            login_url = (
                "https://login.microsoftonline.com/common/oauth2/v2.0/authorize?"
                "client_id=4765445b-32c6-49b0-83e6-1d93765276ca&"
                "redirect_uri=https%3A%2F%2Fwww.office.com%2Flandingv2&"
                "response_type=code%20id_token&"
                "scope=openid%20profile%20https%3A%2F%2Fwww.office.com%2Fv2%2FOfficeHome.All&"
                "response_mode=form_post"
            )
            await self.page.goto(login_url, timeout=60000)

            # 1. Email Step
            email_field = self.page.locator('input[type="email"], input[name="loginfmt"]')
            await email_field.wait_for(timeout=30000)
            await email_field.fill(email)
            await asyncio.sleep(1)
            
            # Click and also press Enter to be sure
            await self.page.locator('input[type="submit"], #idSIButton9').click()
            await self.page.keyboard.press("Enter")
            
            logger.info("Email submitted, waiting for redirect...")
            await asyncio.sleep(5)

            # 2. Detect next state (TAP vs Password vs Security)
            # Increase attempts to 10 for slower environments
            for attempt in range(10):
                curr_url = self.page.url
                logger.info(f"Login Progress (Attempt {attempt+1}): {curr_url}")

                # Case A: Temporary Access Pass field
                tap_field = self.page.locator('input[name="otc"], input[placeholder="Temporary Access Pass"]')
                if await tap_field.is_visible(timeout=3000):
                    logger.info("TAP field detected.")
                    await tap_field.fill(temp_pass)
                    await self.page.locator('input[type="submit"], #idSIButton9').click()
                    await self.page.keyboard.press("Enter")
                    break

                # Case B: Password field
                pwd_field = self.page.locator('input[type="password"]')
                if await pwd_field.is_visible(timeout=1000):
                    logger.warning("Microsoft asked for Password instead of TAP. Attempting to switch...")
                    
                    # 1. Try direct TAP link
                    tap_switch_selectors = [
                        'text="Use a Temporary Access Pass instead"',
                        '#idA_PWD_SwitchToOTC',
                        'a:has-text("Temporary Access Pass")'
                    ]
                    for sel in tap_switch_selectors:
                        link = self.page.locator(sel)
                        if await link.is_visible(timeout=2000):
                            logger.info(f"Switching to TAP via {sel}")
                            await link.click()
                            await asyncio.sleep(3)
                            continue
                    
                    # 2. Try "Other ways to sign in" or "Sign in another way"
                    other_ways_selectors = [
                        'text="Other ways to sign in"',
                        'text="Sign in another way"',
                        '#idA_PWD_SwitchToOther'
                    ]
                    for sel in other_ways_selectors:
                        link = self.page.locator(sel)
                        if await link.is_visible(timeout=2000):
                            logger.info(f"Opening '{sel}' to find TAP option.")
                            await link.click()
                            await asyncio.sleep(2)
                            
                            # Now look for TAP again
                            tap_link = self.page.locator('text="Temporary Access Pass"')
                            if await tap_link.is_visible(timeout=3000):
                                await tap_link.click()
                                await asyncio.sleep(3)
                                break
                    
                    # Re-check if we are now on TAP page
                    if await self.page.locator('input[placeholder="Temporary Access Pass"]').is_visible(timeout=2000):
                        continue
                        
                    logger.error("Could not find TAP option on password page.")
                    return False

                # Case C: "Stay signed in?"
                if "kmsi" in curr_url.lower() or await self.page.locator('text="Stay signed in?"').is_visible(timeout=1000):
                    logger.info("Handling 'Stay signed in?' prompt.")
                    await self.page.locator('input[type="submit"], #idSIButton9').click()
                    await self.page.keyboard.press("Enter")
                    break

                # Case D: Security / More info required
                if "proofup" in curr_url.lower() or await self.page.locator('text="More information required"').is_visible(timeout=1000):
                    logger.info("Handling 'More information required' prompt.")
                    await self.page.locator('input[type="submit"], #idSIButton9').click()
                    await self.page.keyboard.press("Enter")
                    await asyncio.sleep(5)
                    continue
                
                # Case E: Account Disambiguation (Work/School vs Personal)
                work_btn = self.page.locator('text="Work or school account"')
                if await work_btn.is_visible(timeout=1000):
                    logger.info("Selecting 'Work or school account'.")
                    await work_btn.click()
                    await asyncio.sleep(3)
                    continue

                # Fallback: Take screenshot if still on login page and stuck
                if attempt == 5 and "login.microsoftonline.com" in curr_url:
                    try:
                        os.makedirs("screenshots", exist_ok=True)
                        ss_path = f"screenshots/stuck_login_{email.split('@')[0]}.png"
                        await self.page.screenshot(path=ss_path)
                        logger.warning(f"Login stuck. Diagnostic screenshot saved to {ss_path}")
                    except: pass

                await asyncio.sleep(3)

            # 3. Final verification and MFA Method Selection
            await asyncio.sleep(5)
            
            # Check for incorrect TAP
            if await self.page.locator('text="Your Temporary Access Pass is incorrect."').is_visible(timeout=2000):
                logger.error(f"Incorrect Temporary Access Pass for {email}")
                return False

            # Case: "Keep your account secure" / "More information required"
            if "proofup" in self.page.url.lower() or await self.page.get_by_role("heading", name="Let's keep your account secure").is_visible(timeout=5000):
                logger.info("On security setup page. Clicking Next...")
                await self.page.get_by_role("button", name="Next").click()
                await asyncio.sleep(5)

            # 4. Force "Email" method for lead processing
            logger.info(f"Attempting to select 'Email' as MFA method... (URL: {self.page.url})")
            try:
                # If we are on mysignins, we might need to click "Add method" or select from list
                if "mysignins" in self.page.url.lower():
                    logger.info(f"Detected MySignins environment. URL: {self.page.url}")
                    
                    # Wait for page to load more than just "Skip to main content"
                    for load_attempt in range(10):
                        elements = await self.page.locator("button, a").all_inner_texts()
                        if len(elements) > 1:
                            logger.info(f"MySignins elements loaded: {elements}")
                            break
                        logger.info("Waiting for MySignins buttons to appear...")
                        await asyncio.sleep(3)
                    
                    # Log final state for diagnostics
                    try:
                        os.makedirs("screenshots", exist_ok=True)
                        ss_path = f"screenshots/mysignins_{email.split('@')[0]}.png"
                        await self.page.screenshot(path=ss_path)
                    except: pass

                    # Try to find Email method button directly on page
                    email_btns = [
                        'button:has-text("Email")',
                        '[data-testid="email-method-button"]',
                        'text="Email Receive a code to reset"',
                        'button:has-text("Receive a code to reset")',
                        'div[role="button"]:has-text("Email")'
                    ]
                    for sel in email_btns:
                        btn = self.page.locator(sel)
                        if await btn.is_visible(timeout=2000):
                            logger.info(f"Clicking Email method via {sel}")
                            await btn.click()
                            await asyncio.sleep(5)
                            break
                    
                    # If it says "I want to set up a different method" or "Set up a different way to sign in"
                    diff_method_selectors = [
                        'text="I want to set up a different method"',
                        'text="Set up a different way to sign in"',
                        'button:has-text("different way")',
                        'button:has-text("different method")'
                    ]
                    for sel in diff_method_selectors:
                        btn = self.page.locator(sel)
                        if await btn.is_visible(timeout=2000):
                            logger.info(f"Clicking transition link: {sel}")
                            await btn.click()
                            await asyncio.sleep(3)
                            break

                # Look for "Choose different method" link if not already on the right page
                mfa_selectors = [
                    'button[data-testid="choose-different-method-link"]',
                    'text="I want to set up a different method"',
                    'text="Set up a different way to sign in"',
                    'a:has-text("different method")',
                    '#otherWaysLink',
                    'text="I want to use a different method"'
                ]
                
                found_method_link = False
                for sel in mfa_selectors:
                    btn = self.page.locator(sel)
                    if await btn.is_visible(timeout=3000):
                        logger.info(f"Found MFA method link: {sel}")
                        await btn.click()
                        found_method_link = True
                        await asyncio.sleep(3)
                        break
                
                if found_method_link:
                    # Look for Email option in the resulting list
                    email_opt_selectors = [
                        'button:has-text("Email")',
                        '[data-testid="email-method-button"]',
                        'text="Email Receive a code to reset"',
                        'div[role="button"]:has-text("Email")'
                    ]
                    for sel in email_opt_selectors:
                        opt = self.page.locator(sel)
                        if await opt.is_visible(timeout=5000):
                            logger.info(f"Selecting Email method from list via {sel}")
                            await opt.click()
                            await asyncio.sleep(5)
                            break
                else:
                    logger.warning("Could not find 'Choose different method' link.")
                    # Final attempt to find any 'Email' button on current page
                    email_btn = self.page.locator('button:has-text("Email"), [data-testid="email-method-button"]')
                    if await email_btn.is_visible(timeout=2000):
                        logger.info("Found Email button as fallback. Clicking.")
                        await email_btn.click()
                        await asyncio.sleep(5)

            except Exception as e:
                logger.warning(f"Error during MFA method selection: {e}")

            logger.info(f"Login flow completed for {email}. Final URL: {self.page.url}")
            return True
        except Exception as e:
            logger.error(f"Login failed for {email}: {e}")
            try:
                os.makedirs("screenshots", exist_ok=True)
                await self.page.screenshot(path=f"screenshots/login_fail_{email.split('@')[0]}.png")
            except: pass
            return False

    async def process_lead(self, email: str) -> tuple[bool, Optional[str]]:
        """Process a single lead OTP flow"""
        try:
            # Click Email method if visible
            email_btn = self.page.locator('button:has-text("Email")')
            if await email_btn.is_visible(timeout=10000):
                await email_btn.click()

            # Fill lead email
            email_input = self.page.locator('[data-testid="email-input"]')
            await email_input.wait_for(timeout=60000)
            await email_input.fill(email)
            await self.page.locator('[data-testid="reskin-step-next-button"]').click(timeout=60000)

            # Wait for OTP or Error
            await self.page.wait_for_selector(
                '[data-testid="email-verify-challenge-otp-input"], [data-testid="message-bar-error"]',
                timeout=60000
            )

            if await self.page.locator('[data-testid="message-bar-error"]').is_visible():
                text = await self.page.locator('[data-testid="message-bar-error"]').inner_text()
                if "too many" in text.lower():
                    return False, "rate_limit"
                return False, text

            if await self.page.locator('[data-testid="email-verify-challenge-otp-input"]').is_visible():
                await self.page.locator('[data-testid="backButton"]').click()
                logger.info(f"OTP Flow Success: {email}")
                return True, None

            return False, "otp_not_found"
        except Exception as e:
            try:
                os.makedirs("screenshots", exist_ok=True)
                await self.page.screenshot(path=f"screenshots/lead_fail_{email.split('@')[0]}.png")
            except: pass
            return False, str(e)


# -----------------------------------------------------------------------------
# Worker Async Task Logic
# -----------------------------------------------------------------------------
class WorkerTask:
    def __init__(self, task_id: str):
        self.task_id   = task_id
        self.client    = redis.Redis(connection_pool=get_redis_pool())
        self.leads_done   = 0
        self.leads_failed = 0
        self.current_action = "Starting"

    # ------------------------------------------------------------------
    # Fetch exactly BATCH_SIZE UNIQUE leads from the queue.
    # Uses a Redis SET (SENT_LEADS_SET) to skip leads already processed
    # today.  Each lead that passes the dedup check is atomically claimed
    # via SETNX so no two threads can process the same email at once.
    # ------------------------------------------------------------------
    async def _fetch_unique_batch(self, account_email: str) -> List[Dict[str, Any]]:
        """
        Pops leads from the isolated account_queue provided by the Assigner.
        Global and Account-level dedup are already handled by Assigner, 
        but we still check locally as a secondary guard.
        """
        unique_leads = []
        account_queue = f"account_queue:{account_email}"
        used_key = f"used:{account_email}"
        skipped = 0
        
        try:
            # We pop up to BATCH_SIZE items from the account queue
            raw_leads = await self.client.lrange(account_queue, 0, BATCH_SIZE - 1)
            if not raw_leads:
                return []
                
            # Remove them from the list
            await self.client.ltrim(account_queue, len(raw_leads), -1)

            for raw_lead in raw_leads:
                try:
                    data = json.loads(raw_lead)
                except Exception:
                    continue

                lead_email = data.get("email", "").strip().lower()
                if not lead_email:
                    continue

                # Secondary dedup guard
                already_sent = await self.client.sismember(used_key, lead_email)
                if already_sent:
                    skipped += 1
                    logger.debug(f"Skipping lead {lead_email} - already used by {account_email}")
                    continue

                # Claim this lead for this account
                claimed = await self.client.sadd(used_key, lead_email)
                if not claimed:
                    skipped += 1
                    continue

                data["email"] = lead_email
                unique_leads.append({"_raw": raw_lead, "data": data})

        except Exception as e:
            logger.error(f"Error fetching unique batch: {e}")

        if skipped:
            logger.info(f"[Dedup] Skipped {skipped} duplicate leads in this batch fetch.")

        return unique_leads

    async def _cleanup_and_push_results(self, leads: List[Dict[str, Any]], results: List[Dict[str, Any]], account_email: str):
        if not leads:
            return
        try:
            pipe = self.client.pipeline()
            for lead, result in zip(leads, results):
                pipe.lpush(RESULT_QUEUE, json.dumps(result))

                lead_id = lead["data"].get("id", str(uuid.uuid4()))
                if result["success"]:
                    pipe.hdel(RETRY_COUNT_KEY, lead_id)
                else:
                    # On failure, un-claim from SENT_LEADS_SET so it can be
                    # retried next time (unless max retries exceeded).
                    retries = int(result.get("_retries", 0))
                    if retries < MAX_RETRIES:
                        lead_email = lead["data"].get("email", "")
                        pipe.srem(f"used:{account_email}", lead_email)

            await pipe.execute()
        except Exception as e:
            logger.error(f"Error in cleanup and push: {e}")

    async def run(self):
        logger.info(f"Task {self.task_id} started. Batch Size: {BATCH_SIZE}")

        while not _shutdown_requested:
            # Update shared machine stats
            async with _stats_lock:
                _machine_stats["threads"][self.task_id] = self.current_action
                _machine_stats["total_done"]   = sum(t.leads_done   for t in _all_worker_tasks)
                _machine_stats["total_failed"] = sum(t.leads_failed for t in _all_worker_tasks)

            # ----------------------------------------------------------
            # 1. Lease ONE account from Assigned pool (atomic BRPOPLPUSH)
            # ----------------------------------------------------------
            email = await self.client.brpoplpush(ACCOUNT_POOL_ASSIGNED, ACCOUNT_POOL_PROCESSING, timeout=5)
            if not email:
                self.current_action = "Idle"
                continue

            acc_key  = f"account:{email}"
            acc_pass = await self.client.hget(acc_key, "temp_pass")

            if not acc_pass:
                logger.warning(f"Account {email} has no temp_pass. Moving to pending_refresh.")
                await self.client.sadd("account_pool:pending_refresh", email)
                continue

            # ----------------------------------------------------------
            # 2. Fetch up to 10 UNIQUE leads
            # ----------------------------------------------------------
            self.current_action = "Fetching Leads"
            batch = await self._fetch_unique_batch(email)

            if not batch:
                # No leads — return account to ready pool and clean up assignment
                await self.client.lrem(ACCOUNT_POOL_PROCESSING, -1, email)
                await self.client.sadd(ACCOUNT_POOL_READY, email)
                self.current_action = "Idle"
                await asyncio.sleep(1)
                continue

            logger.info(f"Task {self.task_id}: Account={email}, Leads in account_queue={len(batch)}")

            results = []
            engine  = AutomationEngine()

            try:
                await engine.start(headless=True)

                # ----------------------------------------------------------
                # 3. Login once per account session
                # ----------------------------------------------------------
                self.current_action = f"Logging in: {email}"
                login_success = await engine.login_microsoft(email, acc_pass)

                for item_idx, item in enumerate(batch):
                    lead_data  = item["data"]
                    lead_id    = lead_data.get("id", str(uuid.uuid4()))
                    raw_data   = item["_raw"]
                    lead_email = lead_data.get("email")

                    self.current_action = f"Processing: {lead_email}"

                    if not login_success:
                        # Login failed — requeue lead to lead_queue, unclaim, and abort account
                        pipe = self.client.pipeline()
                        pipe.lpush(LEAD_QUEUE, raw_data)
                        pipe.srem(f"used:{email}", lead_email)   # ← un-claim so it can be retried
                        await pipe.execute()

                        results.append({
                            "lead_id": lead_id,
                            "success": False,
                            "error": "login_failed",
                            "worker_id": self.task_id,
                            "row_number": lead_data.get("row_number"),
                            "_skip": True,
                        })
                        item["_skip"] = True
                        continue

                    # --------------------------------------------------
                    # 4. Process each lead
                    # --------------------------------------------------
                    try:
                        retries    = int(await self.client.hget(RETRY_COUNT_KEY, lead_id) or 0)
                        start_time = time.time()

                        success, err = await engine.process_lead(lead_email)
                        elapsed = (time.time() - start_time) * 1000

                        results.append({
                            "lead_id": lead_id,
                            "success": success,
                            "output": {"error": err} if not success else {},
                            "error": err if not success else None,
                            "processing_time_ms": elapsed,
                            "worker_id": self.task_id,
                            "row_number": lead_data.get("row_number"),
                            "_retries": retries,
                        })

                        if success:
                            self.leads_done += 1
                            logger.info(f"[+] Sent lead: {lead_email} via {email}")
                        else:
                            self.leads_failed += 1
                            logger.warning(f"[-] Failed lead: {lead_email}. Reason: {err}")

                        abort_batch = False
                        if err == "rate_limit":
                            logger.warning("Rate limit hit — stopping batch early.")
                            abort_batch = True
                        elif err and "Timeout" in str(err):
                            logger.warning("Page timeout detected (broken page) — stopping batch early.")
                            abort_batch = True

                        if abort_batch:
                            # Requeue remaining leads in the batch so they aren't wasted/lost
                            if item_idx + 1 < len(batch):
                                pipe = self.client.pipeline()
                                for future_item in batch[item_idx + 1:]:
                                    pipe.lpush(LEAD_QUEUE, future_item["_raw"])
                                    pipe.srem(f"used:{email}", future_item["data"].get("email", ""))
                                    future_item["_skip"] = True
                                await pipe.execute()
                            break

                    except Exception as e:
                        logger.error(f"Error processing lead {lead_id}: {e}")
                        retries += 1
                        await self.client.hset(RETRY_COUNT_KEY, lead_id, retries)

                        if retries >= MAX_RETRIES:
                            results.append({
                                "lead_id": lead_id,
                                "success": False,
                                "error": str(e),
                                "worker_id": self.task_id,
                                "row_number": lead_data.get("row_number"),
                                "_retries": retries,
                            })
                        else:
                            # Requeue and un-claim
                            pipe = self.client.pipeline()
                            pipe.lpush(LEAD_QUEUE, raw_data)
                            pipe.srem(f"used:{email}", lead_email)
                            await pipe.execute()
                            item["_skip"] = True

            except Exception as e:
                logger.error(f"Engine exception: {e}")
            finally:
                await engine.stop()

            # ----------------------------------------------------------
            # 5. Account routing after batch
            # ----------------------------------------------------------
            if not login_success:
                await self.client.sadd("account_pool:pending_refresh", email)
                logger.info(f"Account {email} login failed → pending_refresh.")
            else:
                # Count only leads that were actually attempted (not skipped/requeued)
                actually_sent = sum(
                    1 for r in results
                    if not r.get("_skip") and r["success"]
                )
                leads_sent = await self.client.hincrby(acc_key, "leads_sent_today", actually_sent)

                now = time.time()
                cooldown_seconds = await get_cooldown_seconds(self.client)
                pipe = self.client.pipeline()
                pipe.hset(acc_key, "cooldown_until", now + cooldown_seconds)
                pipe.sadd(ACCOUNT_POOL_COOLDOWN, email)
                pipe.srem("account_pool:done_for_today", email)
                await pipe.execute()
                logger.info(
                    f"Account {email} batch done ({leads_sent} leads total) "
                    f"-> Cooldown {round(cooldown_seconds / 60, 1)}m."
                )

            # ----------------------------------------------------------
            # 6. Push results to result_queue and clean processing_queue
            # ----------------------------------------------------------
            final_batch   = [b for b in batch  if not b.get("_skip")]
            valid_ids     = {b["data"].get("id") for b in final_batch}
            final_results = [r for r in results if r.get("lead_id") in valid_ids and not r.get("_skip")]

            await self._cleanup_and_push_results(final_batch, final_results, email)


# Global list of all WorkerTask instances on this machine
_all_worker_tasks: list["WorkerTask"] = []


async def machine_heartbeat_loop():
    """Sends ONE heartbeat key for the whole machine every 5s."""
    client = redis.Redis(connection_pool=get_redis_pool())
    key    = f"worker:machine:{MACHINE_ID}"

    while not _shutdown_requested:
        async with _stats_lock:
            done    = _machine_stats["total_done"]
            failed  = _machine_stats["total_failed"]
            threads = dict(_machine_stats["threads"])

        total        = done + failed
        success_rate = round((done / total * 100), 1) if total > 0 else 0
        busy_count   = sum(1 for a in threads.values() if a not in ("Idle", "Starting"))

        payload = {
            "id":             MACHINE_ID,
            "status":         "busy" if busy_count > 0 else "online",
            "active_threads": busy_count,
            "max_threads":    WORKER_TASKS,
            "leads_done":     done,
            "leads_failed":   failed,
            "success_rate":   success_rate,
            "current_action": next(
                (a for a in threads.values() if a not in ("Idle", "Starting")),
                "Idle"
            ),
            "version":   "3.0.0",
            "last_seen": time.time(),
        }
        blob = json.dumps(payload)
        await client.setex(key, 30, blob)
        await client.set(f"{key}:snapshot", blob)
        await asyncio.sleep(5)


async def main():
    logger.info("=" * 50)
    logger.info(f"Starting Async Playwright Worker [{MACHINE_ID}]. Tasks: {WORKER_TASKS}")
    logger.info("=" * 50)

    client = redis.Redis(connection_pool=get_redis_pool())
    if RESET_SENT_DEDUP_DAILY:
        import datetime
        now = datetime.datetime.now(datetime.timezone.utc)
        tomorrow = now.replace(hour=0, minute=0, second=0, microsecond=0) + datetime.timedelta(days=1)
        ttl = int((tomorrow - now).total_seconds())
        await client.expire(SENT_LEADS_SET, ttl)
        logger.info(f"SENT_LEADS_SET TTL set to {ttl}s (expires at UTC midnight).")
    else:
        logger.info("SENT_LEADS_SET daily auto-reset disabled. Worker state stays stable across resets.")

    for i in range(WORKER_TASKS):
        t = WorkerTask(f"worker-{uuid.uuid4().hex[:6]}")
        _all_worker_tasks.append(t)

    task_coroutines = [t.run() for t in _all_worker_tasks]
    await asyncio.gather(machine_heartbeat_loop(), *task_coroutines)


if __name__ == "__main__":
    try:
        asyncio.run(main())
    except KeyboardInterrupt:
        logger.info("Worker node shutting down.")