app.py

import time
import os
from selenium.webdriver.common.by import By
from selenium.webdriver.common.keys import Keys
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC

# Assuming you have SmolAgent defined or imported somewhere like this:
# from your_smol_agent_module import SmolAgent
# And assuming 'tool' is from langchain:
from langchain.tools import tool

# --- Configuration (Consider environment variables for production) ---
USERNAME = os.getenv("SUBSTACK_USERNAME", "pradeepp@rocketmail.com") # Replace default or set env var
PASSWORD = os.getenv("SUBSTACK_PASSWORD", "Y2ktest1")       # Replace default or set env var

if USERNAME == "your_email@example.com" or PASSWORD == "your_password":
    print("WARNING: Using default USERNAME/PASSWORD. Please set SUBSTACK_USERNAME and SUBSTACK_PASSWORD environment variables for production.")

@tool
def my_custom_tool(arg1:str, arg2:str)-> str:
    """A tool that automates logging into Substack and creating a post.

    Args:
        arg1: A placeholder argument.
        arg2: Another placeholder argument.
    """
    # Define the agent
    agent = SmolAgent(
        browser="chrome",  # Uses Chrome WebDriver
        headless=False,    # Set to True to run in background (required for server environments)
        maximize=True,
    )
    # Get the underlying Selenium WebDriver instance for explicit waits if SmolAgent doesn't provide them
    driver = agent.driver if hasattr(agent, 'driver') else None
    if not driver:
        print("WARNING: SmolAgent instance does not expose a 'driver' attribute for explicit waits.")

    try:
        print("🌐 Opening Substack login page...")
        agent.goto("https://tensorhealth.substack.com/")

        # Wait for "Sign in" link and click it
        print("🔗 Clicking 'Sign in'...")
        if driver:
            WebDriverWait(driver, 20).until(EC.element_to_be_clickable((By.LINK_TEXT, "Sign in"))).click()
        else:
            agent.click_text("Sign in")
            time.sleep(3) # Fallback if no explicit wait available

        # Enter Email/Username
        print("📧 Entering email...")
        email_field = None
        if driver:
            email_field = WebDriverWait(driver, 20).until(EC.presence_of_element_located((By.NAME, "email")))
        if email_field:
            email_field.send_keys(USERNAME)
            email_field.send_keys(Keys.RETURN)
        else:
            agent.type(USERNAME, By.NAME, "email")
            agent.press(Keys.RETURN)
            time.sleep(3) # Fallback

        # Enter Password
        print("🔑 Entering password...")
        password_field = None
        if driver:
            password_field = WebDriverWait(driver, 20).until(EC.presence_of_element_located((By.NAME, "password")))
        if password_field:
            password_field.send_keys(PASSWORD)
            password_field.send_keys(Keys.RETURN)
        else:
            agent.type(PASSWORD, By.NAME, "password")
            agent.press(Keys.RETURN)
            time.sleep(5) # Fallback

        # Open 'Dashboard' dropdown (assuming it appears after login)
        print("📊 Opening 'Dashboard'...")
        if driver:
            WebDriverWait(driver, 20).until(EC.element_to_be_clickable((By.LINK_TEXT, "Dashboard"))).click()
        else:
            agent.click_text("Dashboard")
            time.sleep(5) # Fallback

        # Select 'TensorHealth'
        print("📈 Selecting 'TensorHealth'...")
        if driver:
            WebDriverWait(driver, 10).until(EC.element_to_be_clickable((By.LINK_TEXT, "TensorHealth"))).click()
        else:
            agent.click_text("TensorHealth")
            time.sleep(2) # Fallback

        # Click 'New Post' dropdown
        print("📝 Clicking 'New Post'...")
        if driver:
            WebDriverWait(driver, 20).until(EC.element_to_be_clickable((By.LINK_TEXT, "New Post"))).click()
        else:
            agent.click_text("New Post")
            time.sleep(5) # Fallback

        # Select 'Text Post'
        print("📄 Selecting 'Text Post'...")
        if driver:
            WebDriverWait(driver, 10).until(EC.element_to_be_clickable((By.LINK_TEXT, "Text Post"))).click()
        else:
            agent.click_text("Text Post")
            time.sleep(2) # Fallback

        # Paste "Opinion AI" into contenteditable div
        print("✍️ Pasting 'Opinion AI'...")
        text_area = None
        if driver:
            text_area = WebDriverWait(driver, 20).until(EC.presence_of_element_located((By.XPATH, "//div[@contenteditable='true']")))
        if text_area:
            text_area.send_keys("Opinion AI")
        else:
            agent.type("Opinion AI", By.XPATH, "//div[@contenteditable='true']")
        print("✅ Text successfully entered!")

        return "Text successfully entered into Substack post!"

    except Exception as e:
        print(f"❌ Error occurred: {e}")
        return f"Failed to perform Substack automation: {e}"
    finally:
        # Keep browser open for review (only if headless=False)
        if not agent.headless:
            print("Browser will close in 10 seconds...")
            time.sleep(10)
        print("🧹 Quitting browser agent.")
        agent.quit()

# Example of how you might call this tool (if not directly invoked by an agent framework)
    if __name__ == "__main__":
#     # This part would typically be handled by your LangChain agent's invocation
#     # For standalone testing:
#     # Make sure you have the environment variables set for USERNAME and PASSWORD
#     # or temporarily define them in this script for testing.
     result = my_custom_tool("dummy_arg1", "dummy_arg2")
     print(f"Tool execution result: {result}")