import typer
from pathlib import Path
from jeAddons.copier import fetch_path
from jeAddons.registry import load_registry, get_registry_entry

app = typer.Typer(no_args_is_help=True)


@app.callback()
def main():
    """Copy files or folders from a git repository into your current project."""
    return


@app.command()
def add(
    name: str = typer.Argument(..., help="Registry name from jeAddons/registry.py."),
    ref: str | None = typer.Option(None, "--ref", "-r", help="Override registry git ref."),
    dest: Path | None = typer.Option(None, "--dest", "-d", help="Override registry destination directory."),
    force: bool = typer.Option(False, "--force", "-f", help="Overwrite existing file/folder with same name."),
):
    try:
        entry = get_registry_entry(name)
    except KeyError:
        typer.echo(f"Unknown registry entry: '{name}'.")
        typer.echo("Run `jeaddons list` to show available entries.")
        raise typer.Exit(1)

    repo = entry.get("repo")
    repo_path = entry.get("path")
    if not repo or not repo_path:
        typer.echo(f"Registry entry '{name}' is missing required keys: 'repo' and/or 'path'.")
        raise typer.Exit(1)

    effective_ref = ref or entry.get("ref", "HEAD")
    effective_dest = dest or Path.cwd() / entry.get("dest", ".")

    try:
        target = fetch_path(repo, repo_path, effective_dest, ref=effective_ref, force=force)
    except FileNotFoundError:
        typer.echo(f"Path '{repo_path}' was not found in repository '{repo}'.")
        raise typer.Exit(1)
    except FileExistsError as exc:
        typer.echo(f"Target already exists: {exc}. Use --force to overwrite.")
        raise typer.Exit(1)
    except Exception as exc:
        typer.echo(f"Failed to copy from repository: {exc}")
        raise typer.Exit(1)

    typer.echo(f"Added: {target}")


@app.command("list")
def list_entries():
    """List available registry entries."""
    registry = load_registry()
    if not registry:
        typer.echo("Registry is empty. Add entries in jeAddons/registry.py")
        return

    for name, entry in registry.items():
        repo = entry.get("repo", "<missing repo>")
        repo_path = entry.get("path", "<missing path>")
        ref = entry.get("ref", "HEAD")
        dest = entry.get("dest", ".")
        typer.echo(f"{name}: repo={repo} path={repo_path} ref={ref} dest={dest}")


if __name__ == "__main__":
    app()