"""
Integration test for discrete_material_plan.extractor module

Tests the complete extraction workflow using real ERP data.
Requires valid ERP credentials in .env file.

This test:
1. Reads order IDs from tests/id-demo.txt
2. Downloads data from Yonyou BIP ERP system
3. Saves raw Excel files to data/downloads/
4. Converts and merges to data/output/merged_result.xlsx
"""

import sys
from pathlib import Path
from datetime import datetime

# Add project root to Python path
PROJECT_ROOT = Path(__file__).resolve().parent.parent
sys.path.insert(0, str(PROJECT_ROOT))

# Load environment variables
from dotenv import load_dotenv
load_dotenv(PROJECT_ROOT / ".env")

# Configure browser path
import os
os.environ["PLAYWRIGHT_BROWSERS_PATH"] = os.getenv("PLAYWRIGHT_BROWSERS_PATH", "")

# Generate timestamp for unique output files
TIMESTAMP = datetime.now().strftime("%Y%m%d_%H%M%S")

# Output paths
DOWNLOAD_DIR = PROJECT_ROOT / "data" / "downloads"
OUTPUT_DIR = PROJECT_ROOT / "data" / "output"
OUTPUT_FILE = OUTPUT_DIR / f"merged_result_{TIMESTAMP}.xlsx"

# Ensure directories exist
DOWNLOAD_DIR.mkdir(parents=True, exist_ok=True)
OUTPUT_DIR.mkdir(parents=True, exist_ok=True)

print("=" * 60)
print("Discrete Material Plan Extractor - Integration Test")
print("=" * 60)
print(f"\nConfiguration:")
print(f"  ID File: {PROJECT_ROOT / 'tests' / 'id-demo.txt'}")
print(f"  Download Dir: {DOWNLOAD_DIR}")
print(f"  Output File: {OUTPUT_FILE}")
print(f"  ERP URL: {os.getenv('ERP_URL', 'Not set')}")
print(f"  Headless: {os.getenv('ERP_HEADLESS', 'true')}")
print("=" * 60)

# Verify environment variables
required_vars = ["ERP_USERNAME", "ERP_PASSWORD", "ERP_URL"]
missing_vars = [var for var in required_vars if not os.getenv(var)]

if missing_vars:
    print(f"\n[ERROR] Missing required environment variables: {missing_vars}")
    print("Please ensure .env file contains:")
    print("  ERP_USERNAME=your_username")
    print("  ERP_PASSWORD=your_password")
    print("  ERP_URL=https://your-erp-url.com")
    sys.exit(1)

try:
    # Import required modules
    print("\n[1/6] Importing modules...")
    from playwright.sync_api import sync_playwright
    from utils.auth import login
    from utils.discrete_material_plan import (
        navigate_to_discrete_material_page,
        extract_and_post_process,
        read_order_ids_from_file,
        get_login_url,
    )
    print("[OK] Modules imported successfully")

    # Read order IDs from demo file
    print("\n[2/6] Reading order IDs from data/demo/id-demo.txt...")
    id_file = PROJECT_ROOT / "data" / "demo" / "id-demo.txt"
    order_ids = read_order_ids_from_file(str(id_file))
    print(f"[OK] Loaded {len(order_ids)} order IDs")
    
    test_order_ids = order_ids

    # Setup browser and extract data
    print("\n[3/6] Launching browser and logging in...")
    with sync_playwright() as playwright:
        # Login
        browser, context, page, main_frame = login(
            playwright=playwright,
            username=os.getenv("ERP_USERNAME"),
            password=os.getenv("ERP_PASSWORD"),
            url=get_login_url(os.getenv("ERP_URL")),
            headless=os.getenv("ERP_HEADLESS", "true").lower() == "true",
            ignore_https_errors=os.getenv("ERP_IGNORE_HTTPS_ERRORS", "true").lower() == "true",
            verbose=True,
        )
        
        try:
            # Navigate to discrete material page
            print("\n[4/6] Navigating to discrete material plan page...")
            work_frame, page1 = navigate_to_discrete_material_page(main_frame, page)
            print("[OK] Navigation successful")
            
            # Extract and post-process
            print("\n[5/6] Extracting data and post-processing...")
            print(f"     Orders: {len(test_order_ids)}")
            print(f"     Batch size: 100")
            print(f"     Download dir: {DOWNLOAD_DIR}")
            print(f"     Output file: {OUTPUT_FILE}")
            print(f"     Cleanup temp files: True (default)")
            
            output_path, df = extract_and_post_process(
                work_frame=work_frame,
                page=page1,
                order_ids=test_order_ids,
                download_dir=str(DOWNLOAD_DIR),
                output_file=str(OUTPUT_FILE),
                batch_size=100,
                verbose=True,
                cleanup_temp_files=True,  # Default: True, set to False to keep temp files
            )
            
            print("\n[6/6] Verifying results...")
            print(f"[OK] Extraction completed successfully")
            print(f"     Output file: {output_path}")
            print(f"     Total records: {len(df)}")
            print(f"     Columns: {list(df.columns)}")
            
            # Verify output file exists
            if not Path(output_path).exists():
                raise FileNotFoundError(f"Output file not found: {output_path}")
            print(f"[OK] Output file verified: {output_path}")
            
            # Show sample data
            print("\n" + "=" * 60)
            print("Sample Data (first 3 rows, first 5 columns):")
            print("=" * 60)
            # Use unicode encoding for display
            sample = df.head(3).iloc[:, :5]
            print(sample.to_string())
            print("\n[OK] Data extraction verified - Chinese characters displayed correctly in console encoding")
            
        finally:
            # Cleanup browser
            print("\n\n[Cleanup] Closing browser...")
            context.close()
            browser.close()
            print("[OK] Browser closed")

    print("\n" + "=" * 60)
    print("[SUCCESS] Integration test completed successfully!")
    print("=" * 60)
    print(f"\nOutputs:")
    print(f"  Raw Excel files: {DOWNLOAD_DIR}/*.xlsx")
    print(f"  Merged result: {OUTPUT_FILE}")
    print(f"  Total records: {len(df)}")
    print("=" * 60)

except Exception as e:
    print(f"\n[ERROR] Integration test failed!")
    print(f"Error: {e}")
    import traceback
    traceback.print_exc()
    sys.exit(1)