import json
import os

def load_metadata():
    """Load metadata from metadata.jsonl"""
    metadata_path = "metadata.jsonl"
    metadata = {}
    
    if not os.path.exists(metadata_path):
        print(f"Error: '{metadata_path}' file not found!")
        return metadata
    
    # Parse JSONL file and map descriptions by sprite ID
    try:
        with open(metadata_path, 'r') as f:
            for line in f:
                if line.strip():
                    entry = json.loads(line)
                    # Extract sprite ID from file_name (e.g., "23.png" -> "23")
                    sprite_id = entry["file_name"].split(".")[0]
                    metadata[sprite_id] = entry["text"]
    except Exception as e:
        print(f"Error reading metadata file: {str(e)}")
    
    print(f"Loaded {len(metadata)} entries from metadata file")
    return metadata

def extract_info_safely(description):
    """Extract information from description with error handling"""
    info = {
        "frames": "unknown",
        "action": "unknown",
        "direction": "unknown",
        "character": "unknown"
    }
    
    try:
        # Standard format: "X-frame sprite animation of: CHARACTER, that: ACTION, facing: DIRECTION"
        if "-frame sprite animation of:" in description:
            # Extract frame count
            info["frames"] = description.split("-frame")[0].strip()
            
            # Extract character
            if "of:" in description and ", that:" in description:
                character_part = description.split("of:")[1].split(", that:")[0].strip()
                info["character"] = character_part
            
            # Extract action
            if ", that:" in description and ", facing:" in description:
                action_part = description.split(", that:")[1].split(", facing:")[0].strip()
                info["action"] = action_part
            elif ", that:" in description:
                # Handle case where facing might not be present
                action_part = description.split(", that:")[1].strip()
                info["action"] = action_part
            
            # Extract direction
            if ", facing:" in description:
                direction_part = description.split(", facing:")[1].strip()
                info["direction"] = direction_part
                
        print(f"Processed: '{description[:30]}...' -> frames: {info['frames']}")
    except Exception as e:
        print(f"Warning: Error parsing description: '{description}'")
        print(f"Error details: {str(e)}")
    
    return info

def create_sprite_dataset():
    """Create sprite dataset with metadata"""
    # Load metadata
    metadata = load_metadata()
    if not metadata:
        print("No metadata entries found. Check if metadata.jsonl exists and has content.")
        return {}
    
    # Create output directory structure
    base_dir = "sprite_dataset"
    if not os.path.exists(base_dir):
        os.makedirs(base_dir)
        
    # Create metadata mapping
    sprite_info = {}
    
    # Check if train directory exists
    train_dir = "train"
    if not os.path.exists(train_dir):
        print(f"Error: '{train_dir}' directory not found!")
        return sprite_info
    
    # Process each folder in the train directory - looking for spritesheet_X folders
    frame_folders = [f for f in os.listdir(train_dir) if f.startswith("spritesheet_") and os.path.isdir(os.path.join(train_dir, f))]
    if not frame_folders:
        print(f"Warning: No folders starting with 'spritesheet_' found in '{train_dir}'")
    else:
        print(f"Found {len(frame_folders)} spritesheet folders to process")
    
    for folder_name in frame_folders:
        # Extract sprite ID from folder name (e.g., "spritesheet_23" -> "23")
        sprite_id = folder_name.split("_")[1]
        
        # Get description from metadata
        description = metadata.get(sprite_id, "No description available")
        
        # Extract information safely
        info = extract_info_safely(description)
        
        # Create organized structure with folder name
        sprite_info[sprite_id] = {
            "frames": info["frames"],
            "action": info["action"],
            "direction": info["direction"],
            "character": info["character"],
            "folder_name": folder_name,
            "full_description": description
        }
    
    if not sprite_info:
        print("Warning: No sprite information was extracted!")
        return {}
    
    # Save metadata to JSON file
    metadata_path = "sprite_metadata.json"  # Save in current directory for easier debugging
    with open(metadata_path, "w") as f:
        json.dump(sprite_info, f, indent=4)
            
    print(f"Created sprite dataset with metadata for {len(sprite_info)} sprites")
    return sprite_info

if __name__ == "__main__":
    sprite_info = create_sprite_dataset()