from typing import Dict, Any
from django.http import HttpRequest
from .signals import get_current_branch
from .models import VersionBranch, ChangeSet

def version_control(request: HttpRequest) -> Dict[str, Any]:
    """
    Add version control information to the template context
    """
    current_branch = get_current_branch()
    context = {
        'vcs_enabled': True,
        'current_branch': current_branch,
        'recent_changes': []
    }
    
    if current_branch:
        # Get recent changes for the current branch
        recent_changes = ChangeSet.objects.filter(
            branch=current_branch,
            status='applied'
        ).order_by('-created_at')[:5]
        
        context.update({
            'recent_changes': recent_changes,
            'branch_name': current_branch.name,
            'branch_metadata': current_branch.metadata
        })
    
    # Get available branches for switching
    context['available_branches'] = VersionBranch.objects.filter(
        is_active=True
    ).order_by('-created_at')
    
    # Check if current page is versioned
    if hasattr(request, 'resolver_match') and request.resolver_match:
        view_func = request.resolver_match.func
        if hasattr(view_func, 'view_class'):
            view_class = view_func.view_class
            context['page_is_versioned'] = hasattr(view_class, 'model') and \
                hasattr(view_class.model, 'history')
    
    return {'version_control': context}