#!/usr/bin/env python3
"""
Version Control Helper for PetBot
Automatically manages commits, tags, and changelog updates
"""

import subprocess
import sys
from datetime import datetime

def run_command(cmd):
    """Run a shell command and return output"""
    try:
        result = subprocess.run(cmd, shell=True, capture_output=True, text=True)
        return result.returncode == 0, result.stdout.strip(), result.stderr.strip()
    except Exception as e:
        return False, "", str(e)

def get_current_version():
    """Get the latest version tag"""
    success, output, _ = run_command("git describe --tags --abbrev=0")
    if success and output:
        return output
    return "v0.1.0"  # Default if no tags

def increment_version(version, increment_type="minor"):
    """Increment version number"""
    if version.startswith('v'):
        version = version[1:]
    
    parts = version.split('.')
    major, minor, patch = int(parts[0]), int(parts[1]), int(parts[2])
    
    if increment_type == "major":
        major += 1
        minor = 0
        patch = 0
    elif increment_type == "minor":
        minor += 1
        patch = 0
    else:  # patch
        patch += 1
    
    return f"v{major}.{minor}.{patch}"

def update_changelog(version, changes):
    """Update CHANGELOG.md with new version"""
    date = datetime.now().strftime("%Y-%m-%d")
    
    new_entry = f"""
## [{version}] - {date}

{changes}

---

"""
    
    # Read current changelog
    try:
        with open("CHANGELOG.md", "r") as f:
            content = f.read()
    except FileNotFoundError:
        content = "# Changelog\n\n"
    
    # Insert new entry after the header
    lines = content.split('\n')
    header_end = 0
    for i, line in enumerate(lines):
        if line.startswith('## [v') or line.startswith('## Version History'):
            header_end = i
            break
    
    if header_end == 0:
        # Add after initial header
        for i, line in enumerate(lines):
            if line.strip() == "" and i > 5:  # Find first empty line after headers
                header_end = i
                break
    
    # Insert new content
    lines.insert(header_end, new_entry.strip())
    
    # Write back
    with open("CHANGELOG.md", "w") as f:
        f.write('\n'.join(lines))

def commit_and_tag(message, version, push=True):
    """Create commit and tag"""
    # Add all changes
    run_command("git add .")
    
    # Create commit
    commit_msg = f"{message}\n\n🔧 Generated with Claude Code\n🤖 Co-Authored-By: Claude <noreply@anthropic.com>"
    success, _, error = run_command(f'git commit -m "{commit_msg}"')
    
    if not success and "nothing to commit" not in error:
        print(f"Commit failed: {error}")
        return False
    
    # Create tag
    tag_msg = f"Release {version}: {message}"
    run_command(f'git tag -a {version} -m "{tag_msg}"')
    
    # Push if requested
    if push:
        run_command("git push")
        run_command("git push --tags")
    
    return True

if __name__ == "__main__":
    print("PetBot Version Control Helper")
    print("This script is used internally by Claude Code")