#!/usr/bin/env python3
"""
Test script per verificare la migrazione FTP con aiomysql.

Questo script crea file CSV di test e verifica che il server FTP
li riceva e processi correttamente usando le nuove funzioni async.

NOTA: Questo script richiede che il server FTP sia in esecuzione.

Usage:
    # Terminal 1: Avvia il server FTP
    python src/ftp_csv_receiver.py

    # Terminal 2: Esegui i test
    python test_ftp_migration.py
"""

import logging
import os
import sys
import tempfile
from datetime import datetime
from ftplib import FTP
from pathlib import Path

# Add src directory to Python path
src_path = Path(__file__).parent / "src"
sys.path.insert(0, str(src_path))

# Setup logging
logging.basicConfig(level=logging.INFO, format="%(asctime)s - %(name)s - %(levelname)s - %(message)s")
logger = logging.getLogger(__name__)

# FTP Configuration (adjust as needed)
FTP_CONFIG = {
    "host": "localhost",
    "port": 2121,
    "user": "asega",  # Adjust with your FTP admin user
    "password": "batt1l0",  # Adjust with your FTP admin password
}

# Test data configurations
TEST_CSV_TEMPLATES = {
    "simple": """Unit: TEST_UNIT
Tool: TEST_TOOL
Timestamp: {timestamp}
Data line 1
Data line 2
Data line 3
""",
    "with_separator": """Unit: TEST_UNIT
Tool: TEST_TOOL
Timestamp: {timestamp}
Header
;|;10;|;20;|;30
;|;11;|;21;|;31
;|;12;|;22;|;32
""",
}


def create_test_csv(template_name="simple"):
    """Create a temporary CSV file for testing."""
    timestamp = datetime.now().strftime("%Y%m%d_%H%M%S")
    content = TEST_CSV_TEMPLATES[template_name].format(timestamp=timestamp)

    # Create temp file
    fd, filepath = tempfile.mkstemp(suffix=".csv", prefix=f"test_ftp_{timestamp}_")
    with os.fdopen(fd, "w") as f:
        f.write(content)

    logger.info(f"Created test file: {filepath}")
    return filepath


def connect_ftp():
    """Connect to FTP server."""
    try:
        ftp = FTP()
        ftp.connect(FTP_CONFIG["host"], FTP_CONFIG["port"])
        ftp.login(FTP_CONFIG["user"], FTP_CONFIG["password"])
        logger.info(f"✅ Connected to FTP server {FTP_CONFIG['host']}:{FTP_CONFIG['port']}")
        return ftp
    except Exception as e:
        logger.error(f"❌ Failed to connect to FTP server: {e}")
        logger.error("Make sure the FTP server is running: python src/ftp_csv_receiver.py")
        return None


def test_ftp_connection():
    """Test 1: Basic FTP connection."""
    logger.info("\n" + "=" * 60)
    logger.info("TEST 1: FTP Connection Test")
    logger.info("=" * 60)

    ftp = connect_ftp()
    if ftp:
        try:
            # Test PWD command
            pwd = ftp.pwd()
            logger.info(f"✅ Current directory: {pwd}")

            # Test LIST command
            files = []
            ftp.retrlines("LIST", files.append)
            logger.info(f"✅ Directory listing retrieved ({len(files)} items)")

            ftp.quit()
            logger.info("✅ FTP connection test passed")
            return True
        except Exception as e:
            logger.error(f"❌ FTP connection test failed: {e}")
            return False
    return False


def test_file_upload():
    """Test 2: File upload to FTP server."""
    logger.info("\n" + "=" * 60)
    logger.info("TEST 2: File Upload Test")
    logger.info("=" * 60)

    ftp = connect_ftp()
    if not ftp:
        return False

    try:
        # Create test file
        test_file = create_test_csv("simple")
        filename = os.path.basename(test_file)

        # Upload file
        with open(test_file, "rb") as f:
            logger.info(f"Uploading {filename}...")
            response = ftp.storbinary(f"STOR {filename}", f)
            logger.info(f"Server response: {response}")

        # Verify file was uploaded (might not be visible if processed immediately)
        logger.info("✅ File uploaded successfully")

        # Cleanup
        os.remove(test_file)
        ftp.quit()

        logger.info("✅ File upload test passed")
        logger.info("   Check server logs to verify file was processed")
        return True

    except Exception as e:
        logger.error(f"❌ File upload test failed: {e}")
        try:
            ftp.quit()
        except:
            pass
        return False


def test_multiple_uploads():
    """Test 3: Multiple concurrent file uploads."""
    logger.info("\n" + "=" * 60)
    logger.info("TEST 3: Multiple File Upload Test")
    logger.info("=" * 60)

    success_count = 0
    total_files = 5

    try:
        for i in range(total_files):
            ftp = connect_ftp()
            if not ftp:
                continue

            try:
                # Create test file
                test_file = create_test_csv("simple")
                filename = f"test_{i + 1}_{os.path.basename(test_file)}"

                # Upload file
                with open(test_file, "rb") as f:
                    logger.info(f"Uploading file {i + 1}/{total_files}: {filename}")
                    response = ftp.storbinary(f"STOR {filename}", f)

                success_count += 1

                # Cleanup
                os.remove(test_file)
                ftp.quit()

            except Exception as e:
                logger.error(f"❌ Failed to upload file {i + 1}: {e}")
                try:
                    ftp.quit()
                except:
                    pass

        logger.info(f"\n✅ Successfully uploaded {success_count}/{total_files} files")
        logger.info("   Check server logs to verify all files were processed")
        return success_count == total_files

    except Exception as e:
        logger.error(f"❌ Multiple upload test failed: {e}")
        return False


def test_site_commands():
    """Test 4: FTP SITE commands (user management)."""
    logger.info("\n" + "=" * 60)
    logger.info("TEST 4: SITE Commands Test")
    logger.info("=" * 60)

    ftp = connect_ftp()
    if not ftp:
        return False

    try:
        test_user = f"testuser_{datetime.now().strftime('%Y%m%d%H%M%S')}"
        test_pass = "testpass123"

        # Test SITE LSTU (list users)
        logger.info("Testing SITE LSTU (list users)...")
        try:
            response = ftp.sendcmd("SITE LSTU")
            logger.info(f"✅ SITE LSTU response: {response[:100]}...")
        except Exception as e:
            logger.warning(f"⚠️  SITE LSTU failed: {e}")

        # Test SITE ADDU (add user)
        logger.info(f"Testing SITE ADDU (add user {test_user})...")
        try:
            response = ftp.sendcmd(f"SITE ADDU {test_user} {test_pass}")
            logger.info(f"✅ SITE ADDU response: {response}")
        except Exception as e:
            logger.warning(f"⚠️  SITE ADDU failed: {e}")

        # Test SITE DISU (disable user)
        logger.info(f"Testing SITE DISU (disable user {test_user})...")
        try:
            response = ftp.sendcmd(f"SITE DISU {test_user}")
            logger.info(f"✅ SITE DISU response: {response}")
        except Exception as e:
            logger.warning(f"⚠️  SITE DISU failed: {e}")

        ftp.quit()
        logger.info("✅ SITE commands test passed")
        logger.info("   Check database to verify user management operations")
        return True

    except Exception as e:
        logger.error(f"❌ SITE commands test failed: {e}")
        try:
            ftp.quit()
        except:
            pass
        return False


def main():
    """Run all FTP tests."""
    logger.info("\n" + "=" * 60)
    logger.info("FTP MIGRATION TEST SUITE")
    logger.info("=" * 60)
    logger.info(f"Start time: {datetime.now().strftime('%Y-%m-%d %H:%M:%S')}")
    logger.info(f"FTP Server: {FTP_CONFIG['host']}:{FTP_CONFIG['port']}")
    logger.info("=" * 60)

    tests = [
        ("FTP Connection", test_ftp_connection),
        ("File Upload", test_file_upload),
        ("Multiple Uploads", test_multiple_uploads),
        ("SITE Commands", test_site_commands),
    ]

    results = []
    for test_name, test_func in tests:
        try:
            result = test_func()
            results.append((test_name, result))
        except Exception as e:
            logger.error(f"❌ {test_name} crashed: {e}")
            results.append((test_name, False))

    # Summary
    logger.info("\n" + "=" * 60)
    logger.info("TEST SUMMARY")
    logger.info("=" * 60)

    passed = sum(1 for _, result in results if result)
    total = len(results)

    for test_name, result in results:
        status = "✅ PASS" if result else "❌ FAIL"
        logger.info(f"{status:10} | {test_name}")

    logger.info("=" * 60)
    logger.info(f"Results: {passed}/{total} tests passed")
    logger.info(f"End time: {datetime.now().strftime('%Y-%m-%d %H:%M:%S')}")
    logger.info("=" * 60)

    if passed == total:
        logger.info("\n🎉 All FTP tests PASSED!")
        logger.info("   Remember to check:")
        logger.info("   - Server logs for file processing")
        logger.info("   - Database for inserted records")
        logger.info("   - Database for user management changes")
        return 0
    else:
        logger.error(f"\n⚠️  {total - passed} FTP test(s) FAILED.")
        logger.error("   Make sure:")
        logger.error("   - FTP server is running: python src/ftp_csv_receiver.py")
        logger.error("   - Database is accessible")
        logger.error("   - FTP credentials are correct")
        return 1


if __name__ == "__main__":
    exit_code = main()
    sys.exit(exit_code)