"""
setup_google.py - One-time Google API setup for Job Automation Agent.
Run: python setup_google.py
"""
import os, sys, json, webbrowser
from pathlib import Path


def main():
    print()
    print("=" * 58)
    print("  Google Sheets + Drive Setup - Job Automation Agent")
    print("=" * 58)
    print()
    print("This connects the agent to your Google Sheet:")
    print("  https://docs.google.com/spreadsheets/d/1Ehxt3eortehbtySdtgcSrMhCqmxIMUAmvRqSkII0HJk")
    print()
    print("TWO OPTIONS:")
    print("  A  [RECOMMENDED] Service Account - no browser needed, best for automation")
    print("  B  OAuth2 - browser login once, simpler setup")
    print()

    choice = input("Choose (A/B): ").strip().upper()
    if choice == "A":
        setup_service_account()
    elif choice == "B":
        setup_oauth()
    else:
        print("Invalid. Run again and choose A or B.")


def setup_service_account():
    print()
    print("-" * 56)
    print("  OPTION A: Service Account Setup")
    print("-" * 56)
    print()
    print("Steps:")
    print("  1. Go to: https://console.cloud.google.com")
    print("  2. Create or select a project")
    print("  3. Enable 'Google Sheets API' and 'Google Drive API'")
    print("  4. Go to IAM & Admin -> Service Accounts")
    print("  5. Create a new Service Account (any name)")
    print("  6. Click the account -> Keys tab -> Add Key -> JSON")
    print("  7. Download the JSON file")
    print("  8. Rename it to: google_credentials.json")
    print(f"  9. Place it here: {os.path.abspath('.')}")
    print(" 10. Share your Google Sheet with the service account email")
    print("     (the client_email field in the JSON)")
    print()
    webbrowser.open("https://console.cloud.google.com/iam-admin/serviceaccounts")
    input("Press Enter after placing google_credentials.json here...")

    if Path("google_credentials.json").exists():
        with open("google_credentials.json") as f:
            data = json.load(f)
        email = data.get("client_email", "")
        print()
        print("  Credentials file found!")
        print(f"  Service account email: {email}")
        print()
        print("  IMPORTANT - Share your Google Sheet with this email as Editor:")
        sheet_id = os.getenv("GOOGLE_SHEET_ID", "1Ehxt3eortehbtySdtgcSrMhCqmxIMUAmvRqSkII0HJk")
        print(f"  Sheet: https://docs.google.com/spreadsheets/d/{sheet_id}/edit")
        print(f"  -> Click Share -> Add '{email}' as Editor")
        print()
        input("Press Enter after sharing the sheet...")
        test_connection()
    else:
        print("ERROR: google_credentials.json not found. Please try again.")


def setup_oauth():
    print()
    print("-" * 56)
    print("  OPTION B: OAuth2 Setup")
    print("-" * 56)
    print()
    print("Steps:")
    print("  1. Go to: https://console.cloud.google.com")
    print("  2. Create or select a project")
    print("  3. Enable 'Google Sheets API' and 'Google Drive API'")
    print("  4. Go to APIs & Services -> Credentials")
    print("  5. Create OAuth 2.0 Client ID -> Desktop App")
    print("  6. Download JSON -> rename to: google_oauth_client.json")
    print(f"  7. Place it here: {os.path.abspath('.')}")
    print()
    webbrowser.open("https://console.cloud.google.com/apis/credentials")
    input("Press Enter after placing google_oauth_client.json here...")

    if Path("google_oauth_client.json").exists():
        print("  OAuth client file found! Starting browser login...")
        test_connection()
    else:
        print("ERROR: google_oauth_client.json not found. Please try again.")


def test_connection():
    print()
    print("Testing Google connection...")
    try:
        from src.gsheets import _get_client, get_sheet_url
        from dotenv import load_dotenv
        load_dotenv()
        sheet_id = os.getenv("GOOGLE_SHEET_ID", "1Ehxt3eortehbtySdtgcSrMhCqmxIMUAmvRqSkII0HJk")

        client = _get_client()
        sh = client.open_by_key(sheet_id)
        print(f"  Connected to Google Sheets!")
        print(f"  Sheet name: {sh.title}")
        print(f"  Sheet URL:  {get_sheet_url(sheet_id)}")
        print()
        print("Setup complete! Run python main.py to start the agent.")
    except Exception as e:
        print(f"  Connection failed: {e}")
        print()
        print("Troubleshooting:")
        print("  - Ensure credentials file is correct")
        print("  - Ensure Google Sheets API + Drive API are enabled")
        print("  - For service accounts: share the sheet with the service account email")


if __name__ == "__main__":
    from dotenv import load_dotenv
    load_dotenv()
    main()