#!/usr/bin/env python3
"""
Test script to verify episode matching logic with mock data.
"""
import sys
import os
from pathlib import Path

# Add src to path
sys.path.insert(0, os.path.join(os.path.dirname(__file__), 'src'))

from Matcher.episode_renamer import EpisodeRenamer

def create_mock_episodes():
    """Create mock episode data to test the matching logic."""
    return [
        {
            'path': Path('Disc 1_t01.mkv'),
            'name': 'Disc 1_t01.mkv',
            'size_bytes': 2 * 1024**3,  # 2GB
            'size_gb': 2.0,
            'duration_minutes': 61.0,
        },
        {
            'path': Path('Disc 1_t02.mkv'), 
            'name': 'Disc 1_t02.mkv',
            'size_bytes': 2.1 * 1024**3,  # 2.1GB
            'size_gb': 2.1,
            'duration_minutes': 55.0,
        },
        {
            'path': Path('Disc 1_t03.mkv'),
            'name': 'Disc 1_t03.mkv', 
            'size_bytes': 2.2 * 1024**3,  # 2.2GB
            'size_gb': 2.2,
            'duration_minutes': 57.0,
        },
        {
            'path': Path('Disc 2_t01.mkv'),
            'name': 'Disc 2_t01.mkv',
            'size_bytes': 2.0 * 1024**3,  # 2GB
            'size_gb': 2.0,
            'duration_minutes': 55.0,
        },
        {
            'path': Path('Disc 2_t02.mkv'),
            'name': 'Disc 2_t02.mkv',
            'size_bytes': 2.1 * 1024**3,  # 2.1GB  
            'size_gb': 2.1,
            'duration_minutes': 54.0,
        },
        {
            'path': Path('Disc 2_t03.mkv'),
            'name': 'Disc 2_t03.mkv',
            'size_bytes': 1.9 * 1024**3,  # 1.9GB
            'size_gb': 1.9,
            'duration_minutes': 52.0,
        },
        {
            'path': Path('Disc 3_t01.mkv'),
            'name': 'Disc 3_t01.mkv',
            'size_bytes': 2.2 * 1024**3,  # 2.2GB
            'size_gb': 2.2,
            'duration_minutes': 57.0,
        },
        {
            'path': Path('Disc 3_t02.mkv'),
            'name': 'Disc 3_t02.mkv', 
            'size_bytes': 2.1 * 1024**3,  # 2.1GB
            'size_gb': 2.1,
            'duration_minutes': 58.0,
        }
    ]

def create_mock_tvdb_episodes():
    """Create mock TVDB episode data."""
    return [
        {'episode_number': 1, 'name': 'Winter Is Coming', 'runtime': 61},
        {'episode_number': 2, 'name': 'The Kingsroad', 'runtime': 55},
        {'episode_number': 3, 'name': 'Lord Snow', 'runtime': 57},
        {'episode_number': 4, 'name': 'Cripples, Bastards, and Broken Things', 'runtime': 55},
        {'episode_number': 5, 'name': 'The Wolf and the Lion', 'runtime': 54},
        {'episode_number': 6, 'name': 'A Golden Crown', 'runtime': 52},
        {'episode_number': 7, 'name': 'You Win or You Die', 'runtime': 57},
        {'episode_number': 8, 'name': 'The Pointy End', 'runtime': 58},
        {'episode_number': 9, 'name': 'Baelor', 'runtime': 56},
        {'episode_number': 10, 'name': 'Fire and Blood', 'runtime': 52},
    ]

def test_episode_matching():
    """Test the episode matching logic."""
    print("=== Testing Episode Matching Logic ===\n")
    
    # Create mock data
    episodes = create_mock_episodes()
    tvdb_episodes = create_mock_tvdb_episodes()
    
    print(f"Mock episode files ({len(episodes)}):")
    for ep in episodes:
        print(f"  - {ep['name']} ({ep['duration_minutes']} min)")
    
    print(f"\nTVDB episodes ({len(tvdb_episodes)}):")
    for ep in tvdb_episodes:
        print(f"  - Episode {ep['episode_number']}: {ep['name']} ({ep['runtime']} min)")
    
    # Initialize renamer
    renamer = EpisodeRenamer("/tmp/test", "Game of Thrones", 1)
    
    # Test the matching logic
    print("\n" + "="*80)
    print("TESTING EPISODE MATCHING")
    print("="*80)
    
    try:
        matched_episodes = renamer._match_episodes_by_duration(episodes, tvdb_episodes)
        
        print(f"\n=== MATCHING RESULTS ===")
        print(f"Successfully matched {len(matched_episodes)} episodes:")
        
        for match in matched_episodes:
            file_name = match['file_info']['path'].name
            episode_num = match['episode_number']
            tvdb_name = match['tvdb_info']['name'] if match['tvdb_info'] else 'Unknown'
            duration_diff = match.get('duration_diff', 'N/A')
            
            print(f"  {file_name} → Episode {episode_num}: {tvdb_name}")
            if duration_diff != 'N/A' and duration_diff is not None:
                print(f"    Duration difference: {duration_diff:.1f} minutes")
        
        # Test validity of assignments
        print(f"\n=== ASSIGNMENT VALIDATION ===")
        episode_numbers = [m['episode_number'] for m in matched_episodes]
        if len(set(episode_numbers)) == len(episode_numbers):
            print("✓ All episodes assigned unique episode numbers")
        else:
            print("✗ Duplicate episode number assignments detected!")
            duplicates = [x for x in episode_numbers if episode_numbers.count(x) > 1]
            print(f"  Duplicates: {set(duplicates)}")
        
        # Check disc order constraint 
        disc_assignments = {}
        for match in matched_episodes:
            file_name = match['file_info']['path'].name
            episode_num = match['episode_number']
            
            # Extract disc number
            if 'Disc 1' in file_name:
                disc = 1
            elif 'Disc 2' in file_name:
                disc = 2
            elif 'Disc 3' in file_name:
                disc = 3
            else:
                disc = None
                
            if disc:
                if disc not in disc_assignments:
                    disc_assignments[disc] = []
                disc_assignments[disc].append(episode_num)
        
        print(f"\nDisc assignment validation:")
        for disc in sorted(disc_assignments.keys()):
            episodes = sorted(disc_assignments[disc])
            print(f"  Disc {disc}: Episodes {episodes}")
            
            # Check if episodes are in reasonable order (earlier discs should have earlier episodes)
            if disc == 1:
                expected_range = list(range(1, 4))  # Episodes 1-3
            elif disc == 2: 
                expected_range = list(range(4, 7))  # Episodes 4-6
            elif disc == 3:
                expected_range = list(range(7, 9))  # Episodes 7-8
            
            if set(episodes).issubset(set(expected_range)):
                print(f"    ✓ Episodes {episodes} are within expected range {expected_range}")
            else:
                print(f"    ⚠ Episodes {episodes} outside expected range {expected_range}")
    
    except Exception as e:
        print(f"Error during matching: {e}")
        import traceback
        traceback.print_exc()

if __name__ == "__main__":
    test_episode_matching()