#!/usr/bin/env python3
"""
Test Asset Tracking Functionality

This script tests the asset tracking system to ensure new assets are detected
and only new/modified assets are downloaded.
"""

import asyncio
import json
import logging
import sys
import tempfile
from pathlib import Path
from datetime import datetime
import os

# Add the current directory to the path so we can import modules
sys.path.insert(0, os.path.dirname(os.path.abspath(__file__)))

from asset_tracker import AssetTracker
from auth_manager import AuthManager
from image_downloader import ImageDownloader


class AssetTrackingTester:
    """Test class for asset tracking functionality."""

    def __init__(self):
        """Initialize the tester."""
        self.logger = logging.getLogger(__name__)

        # Mock API data for testing
        self.mock_assets_v1 = [
            {
                "id": "asset_001",
                "name": "family_photo_1.jpg",
                "updated": "2024-01-01T10:00:00Z",
                "size": 1024000,
                "mimeType": "image/jpeg"
            },
            {
                "id": "asset_002",
                "name": "birthday_party.jpg",
                "updated": "2024-01-02T15:30:00Z",
                "size": 2048000,
                "mimeType": "image/jpeg"
            },
            {
                "id": "asset_003",
                "name": "school_event.png",
                "updated": "2024-01-03T09:15:00Z",
                "size": 1536000,
                "mimeType": "image/png"
            }
        ]

        self.mock_assets_v2 = [
            # Existing asset - unchanged
            {
                "id": "asset_001",
                "name": "family_photo_1.jpg",
                "updated": "2024-01-01T10:00:00Z",
                "size": 1024000,
                "mimeType": "image/jpeg"
            },
            # Existing asset - modified
            {
                "id": "asset_002",
                "name": "birthday_party.jpg",
                "updated": "2024-01-05T16:45:00Z",  # Updated timestamp
                "size": 2100000,  # Different size
                "mimeType": "image/jpeg"
            },
            # Existing asset - unchanged
            {
                "id": "asset_003",
                "name": "school_event.png",
                "updated": "2024-01-03T09:15:00Z",
                "size": 1536000,
                "mimeType": "image/png"
            },
            # New asset
            {
                "id": "asset_004",
                "name": "new_vacation_photo.jpg",
                "updated": "2024-01-06T14:20:00Z",
                "size": 3072000,
                "mimeType": "image/jpeg"
            }
        ]

    def test_basic_tracking(self):
        """Test basic asset tracking functionality."""
        print("=" * 60)
        print("TEST 1: Basic Asset Tracking")
        print("=" * 60)

        with tempfile.TemporaryDirectory() as temp_dir:
            tracker = AssetTracker(storage_dir=temp_dir)

            print(f"Testing with temporary directory: {temp_dir}")

            # Test with empty tracker
            print("\n1. Testing new asset detection (empty tracker)...")
            new_assets = tracker.get_new_assets(self.mock_assets_v1)
            print(f"   Found {len(new_assets)} new assets (expected: 3)")
            assert len(new_assets) == 3, f"Expected 3 new assets, got {len(new_assets)}"
            print("   ✅ All assets correctly identified as new")

            # Simulate downloading first batch
            print("\n2. Simulating download of first batch...")
            for asset in self.mock_assets_v1:
                filename = asset['name']
                filepath = Path(temp_dir) / filename

                # Create dummy file
                filepath.write_text(f"Mock content for {asset['id']}")

                # Mark as downloaded
                tracker.mark_asset_downloaded(asset, filepath, True)
                print(f"   Marked as downloaded: {filename}")

            # Test tracker stats
            stats = tracker.get_stats()
            print(f"\n3. Tracker statistics after first batch:")
            print(f"   Total tracked assets: {stats['total_tracked_assets']}")
            print(f"   Successful downloads: {stats['successful_downloads']}")
            print(f"   Existing files: {stats['existing_files']}")

            # Test with same assets (should find no new ones)
            print("\n4. Testing with same assets (should find none)...")
            new_assets = tracker.get_new_assets(self.mock_assets_v1)
            print(f"   Found {len(new_assets)} new assets (expected: 0)")
            assert len(new_assets) == 0, f"Expected 0 new assets, got {len(new_assets)}"
            print("   ✅ Correctly identified all assets as already downloaded")

            print("\n✅ Basic tracking test passed!")

    def test_modified_asset_detection(self):
        """Test detection of modified assets."""
        print("\n" + "=" * 60)
        print("TEST 2: Modified Asset Detection")
        print("=" * 60)

        with tempfile.TemporaryDirectory() as temp_dir:
            tracker = AssetTracker(storage_dir=temp_dir)

            # Simulate first batch download
            print("1. Simulating initial download...")
            for asset in self.mock_assets_v1:
                filename = asset['name']
                filepath = Path(temp_dir) / filename
                filepath.write_text(f"Mock content for {asset['id']}")
                tracker.mark_asset_downloaded(asset, filepath, True)

            print(f"   Downloaded {len(self.mock_assets_v1)} assets")

            # Test with modified assets
            print("\n2. Testing with modified asset list...")
            new_assets = tracker.get_new_assets(self.mock_assets_v2)
            print(f"   Found {len(new_assets)} new/modified assets")

            # Should detect 1 modified + 1 new = 2 assets
            expected = 2  # asset_002 (modified) + asset_004 (new)
            assert len(new_assets) == expected, f"Expected {expected} assets, got {len(new_assets)}"

            # Check which assets were detected
            detected_ids = [asset['id'] for asset in new_assets]
            print(f"   Detected asset IDs: {detected_ids}")

            assert 'asset_002' in detected_ids, "Modified asset_002 should be detected"
            assert 'asset_004' in detected_ids, "New asset_004 should be detected"
            assert 'asset_001' not in detected_ids, "Unchanged asset_001 should not be detected"
            assert 'asset_003' not in detected_ids, "Unchanged asset_003 should not be detected"

            print("   ✅ Correctly identified 1 modified + 1 new asset")
            print("✅ Modified asset detection test passed!")

    def test_cleanup_functionality(self):
        """Test cleanup of missing files."""
        print("\n" + "=" * 60)
        print("TEST 3: Cleanup Functionality")
        print("=" * 60)

        with tempfile.TemporaryDirectory() as temp_dir:
            tracker = AssetTracker(storage_dir=temp_dir)

            # Create some files and track them
            print("1. Creating and tracking assets...")
            filepaths = []
            for asset in self.mock_assets_v1:
                filename = asset['name']
                filepath = Path(temp_dir) / filename
                filepath.write_text(f"Mock content for {asset['id']}")
                tracker.mark_asset_downloaded(asset, filepath, True)
                filepaths.append(filepath)
                print(f"   Created and tracked: {filename}")

            # Remove one file manually
            print("\n2. Removing one file manually...")
            removed_file = filepaths[1]
            removed_file.unlink()
            print(f"   Removed: {removed_file.name}")

            # Check stats before cleanup
            stats_before = tracker.get_stats()
            print(f"\n3. Stats before cleanup:")
            print(f"   Total tracked: {stats_before['total_tracked_assets']}")
            print(f"   Existing files: {stats_before['existing_files']}")
            print(f"   Missing files: {stats_before['missing_files']}")

            # Run cleanup
            print("\n4. Running cleanup...")
            tracker.cleanup_missing_files()

            # Check stats after cleanup
            stats_after = tracker.get_stats()
            print(f"\n5. Stats after cleanup:")
            print(f"   Total tracked: {stats_after['total_tracked_assets']}")
            print(f"   Existing files: {stats_after['existing_files']}")
            print(f"   Missing files: {stats_after['missing_files']}")

            # Verify cleanup worked
            assert stats_after['missing_files'] == 0, "Should have no missing files after cleanup"
            assert stats_after['total_tracked_assets'] == len(self.mock_assets_v1) - 1, "Should have one less tracked asset"

            print("   ✅ Cleanup successfully removed missing file metadata")
            print("✅ Cleanup functionality test passed!")

    async def test_integration_with_downloader(self):
        """Test integration with ImageDownloader."""
        print("\n" + "=" * 60)
        print("TEST 4: Integration with ImageDownloader")
        print("=" * 60)

        # Note: This test requires actual API credentials to work fully
        # For now, we'll test the initialization and basic functionality

        with tempfile.TemporaryDirectory() as temp_dir:
            print(f"1. Testing ImageDownloader with asset tracking...")

            try:
                downloader = ImageDownloader(
                    api_url="https://api.parentzone.me",
                    list_endpoint="/v1/media/list",
                    download_endpoint="/v1/media",
                    output_dir=temp_dir,
                    track_assets=True
                )

                # Check if asset tracker was initialized
                if downloader.asset_tracker:
                    print("   ✅ Asset tracker successfully initialized in downloader")

                    # Test tracker stats
                    stats = downloader.asset_tracker.get_stats()
                    print(f"   Initial stats: {stats['total_tracked_assets']} tracked assets")
                else:
                    print("   ❌ Asset tracker was not initialized")

            except Exception as e:
                print(f"   Error during downloader initialization: {e}")

            print("✅ Integration test completed!")

    def run_all_tests(self):
        """Run all tests."""
        print("🚀 Starting Asset Tracking Tests")
        print("=" * 80)

        try:
            self.test_basic_tracking()
            self.test_modified_asset_detection()
            self.test_cleanup_functionality()
            asyncio.run(self.test_integration_with_downloader())

            print("\n" + "=" * 80)
            print("🎉 ALL TESTS PASSED!")
            print("=" * 80)
            return True

        except Exception as e:
            print(f"\n❌ TEST FAILED: {e}")
            import traceback
            traceback.print_exc()
            return False


async def test_with_real_api():
    """Test with real API (requires authentication)."""
    print("\n" + "=" * 60)
    print("REAL API TEST: Asset Tracking with ParentZone API")
    print("=" * 60)

    # Test credentials
    email = "tudor.sitaru@gmail.com"
    password = "mTVq8uNUvY7R39EPGVAm@"

    with tempfile.TemporaryDirectory() as temp_dir:
        print(f"Using temporary directory: {temp_dir}")

        try:
            # Create downloader with asset tracking
            downloader = ImageDownloader(
                api_url="https://api.parentzone.me",
                list_endpoint="/v1/media/list",
                download_endpoint="/v1/media",
                output_dir=temp_dir,
                email=email,
                password=password,
                track_assets=True,
                max_concurrent=2  # Limit for testing
            )

            print("\n1. First run - downloading all assets...")
            await downloader.download_all_assets()

            if downloader.asset_tracker:
                stats1 = downloader.asset_tracker.get_stats()
                print(f"\nFirst run statistics:")
                print(f"   Downloaded assets: {stats1['successful_downloads']}")
                print(f"   Failed downloads: {stats1['failed_downloads']}")
                print(f"   Total size: {stats1['total_size_mb']} MB")

            print("\n2. Second run - should find no new assets...")
            downloader.stats = {'total': 0, 'successful': 0, 'failed': 0, 'skipped': 0}
            await downloader.download_all_assets()

            if downloader.asset_tracker:
                stats2 = downloader.asset_tracker.get_stats()
                print(f"\nSecond run statistics:")
                print(f"   New downloads: {downloader.stats['successful']}")
                print(f"   Skipped (unchanged): {len(stats2.get('total_tracked_assets', 0))}")

            print("\n✅ Real API test completed!")

        except Exception as e:
            print(f"❌ Real API test failed: {e}")
            import traceback
            traceback.print_exc()


def main():
    """Main test function."""
    # Setup logging
    logging.basicConfig(
        level=logging.INFO,
        format='%(asctime)s - %(name)s - %(levelname)s - %(message)s'
    )

    tester = AssetTrackingTester()

    # Run unit tests
    success = tester.run_all_tests()

    # Ask user if they want to run real API test
    if success and len(sys.argv) > 1 and sys.argv[1] == '--real-api':
        print("\n" + "🌐 Running real API test...")
        asyncio.run(test_with_real_api())

    return 0 if success else 1


if __name__ == "__main__":
    exit(main())