"""
Clean pip freeze output for HuggingFace Spaces deployment
Usage: python clean_requirements.py < raw_freeze.txt > requirements.txt
"""

import sys
import re

def clean_requirements(lines):
    """Clean pip freeze output for deployment."""
    cleaned = []
    
    for line in lines:
        line = line.strip()
        
        # Skip empty lines and comments
        if not line or line.startswith('#'):
            continue
        
        # Skip editable installs (local packages)
        if line.startswith('-e') or line.startswith('file://'):
            print(f"# Skipped local package: {line}", file=sys.stderr)
            continue
        
        # Skip packages installed from git
        if 'git+' in line or '@' in line and 'git' in line:
            print(f"# Skipped git package: {line}", file=sys.stderr)
            continue
        
        # Remove local version identifiers (+cpu, +cu118, etc)
        # torch==2.0.1+cpu -> torch==2.0.1
        line = re.sub(r'\+[a-z0-9]+', '', line)
        
        # Remove platform-specific wheel info
        # some-package @ file:///... -> some-package==version
        if ' @ ' in line:
            # Extract just package name and try to find version
            pkg_name = line.split(' @ ')[0].strip()
            print(f"# Simplified: {line} -> {pkg_name}", file=sys.stderr)
            # Try to keep just the package name without version
            # HF Spaces will resolve the version
            cleaned.append(pkg_name)
            continue
        
        cleaned.append(line)
    
    return cleaned

if __name__ == '__main__':
    lines = sys.stdin.readlines()
    cleaned = clean_requirements(lines)
    
    print("# Requirements generated from pip freeze")
    print("# Cleaned for HuggingFace Spaces deployment\n")
    
    for line in sorted(set(cleaned)):  # Remove duplicates and sort
        print(line)