Function simulate_compare

src/codegraphcontext/cli/simulator.py:172–273

Compare current architecture metrics against the proposed architecture after applying simulated changes.

(
    config_path: str = typer.Argument(..., help="Path to the simulation JSON configuration file."),
    path: Optional[str] = typer.Argument(None, help="Path to the directory to simulate. Defaults to the current directory."),
    context: Optional[str] = typer.Option(None, "--context", "-c", help="Specific context to use"),
)

@simulate_app.command("compare")
def simulate_compare(
    config_path: str = typer.Argument(..., help="Path to the simulation JSON configuration file."),
    path: Optional[str] = typer.Argument(None, help="Path to the directory to simulate. Defaults to the current directory."),
    context: Optional[str] = typer.Option(None, "--context", "-c", help="Specific context to use"),
):
    """
    Compare current architecture metrics against the proposed architecture after applying simulated changes.
    """
    load_cgc_credentials(context)
    repo_path = get_repo_path(path)
    
    cfg_file = Path(config_path)
    if not cfg_file.exists():
        console.print(f"[bold red]Scenario configuration file not found:[/bold red] {config_path}")
        raise typer.Exit(code=1)

    try:
        with open(cfg_file, "r") as f:
            scenario = json.load(f)
    except Exception as e:
        console.print(f"[bold red]Failed to parse scenario JSON file:[/bold red] {e}")
        raise typer.Exit(code=1)

    services = _initialize_services(context)
    db_manager = services[0]

    try:
        baseline = CodeGraphTwin(repo_path).load_from_db(db_manager)
        simulated = CodeGraphTwin(repo_path).load_from_db(db_manager)
        
        # Apply simulated steps
        steps = scenario.get("steps", [])
        for step in steps:
            stype = step.get("type")
            if stype == "decompose":
                simulated.decompose_service(step.get("mapping", {}))
            elif stype == "remove_dependency":
                simulated.remove_dependency(step.get("source"), step.get("target"), step.get("rel_type"))
            elif stype == "add_dependency":
                simulated.add_dependency(step.get("source"), step.get("target"), step.get("rel_type"))
            elif stype == "remove_node":
                simulated.remove_node(step.get("node_id"))
                
        diff = baseline.compare_scenarios(simulated)
        
        # Render comparison table
        table = Table(title=f"Scenario Comparison: Baseline vs {scenario.get('name', 'Simulated')}", show_header=True, header_style="bold cyan")
        table.add_column("Metric", style="bold")
        table.add_column("Baseline Value", justify="right")
        table.add_column("Simulated Value", justify="right")
        table.add_column("Change (Delta)", justify="right")
        
        def format_delta(val):
            if val > 0:
                return f"[green]+{val}[/green]"
            elif val < 0:
                return f"[red]{val}[/red]"
            return "[dim]0[/dim]"