Function _update_existing_config

openviking_cli/setup_wizard.py:1839–1905

Update a single section (vlm / embedding / server) of an existing ov.conf.

(config_path: Path, section: str)

def _update_existing_config(config_path: Path, section: str) -> int:
    """Update a single section (vlm / embedding / server) of an existing ov.conf."""
    try:
        data = json.loads(config_path.read_text(encoding="utf-8-sig"))
    except (OSError, json.JSONDecodeError, UnicodeDecodeError) as exc:
        print(f"  {_red(f'Cannot read existing config: {exc}')}")
        print(f"  {_dim('Fix or remove the file, then re-run `openviking-server init`.')}")
        return 1
    if not isinstance(data, dict):
        print(f"  {_red('Existing config is not a JSON object; cannot update in place.')}")
        return 1

    if section == "vlm":
        current_vlm = _config_section(data, "vlm")
        print(f"\n  Current VLM: {_summarize_model(current_vlm)}")
        vlm_config, _ = _prompt_cloud_vlm(current=current_vlm)
        if vlm_config is None:
            print("\n  Setup cancelled.\n")
            return 0
        old_summary, new_summary = _summarize_model(current_vlm), _summarize_model(vlm_config)
        data["vlm"] = vlm_config
    elif section == "embedding":
        old_dense = _config_section(data, "embedding", "dense")
        old_dim = old_dense.get("dimension")
        print(f"\n  Current embedding: {_summarize_model(old_dense)}")
        dense, _ = _prompt_embedding_flow(current=old_dense)
        if dense is _CUSTOM_SETUP:
            return 0
        if dense is None:
            print("\n  Setup cancelled.\n")
            return 0
        if old_dim and dense.get("dimension") != old_dim:
            print(
                f"\n  {_yellow('Embedding dimension changes from ' + str(old_dim) + ' to ' + str(dense.get('dimension')) + '.')}"
            )
            print(
                f"  {_yellow('Existing vector indexes become unusable — data must be re-ingested.')}"
            )
            if not _prompt_confirm("Continue?", default=False):
                print("\n  Setup cancelled.\n")
                return 0
        old_summary, new_summary = _summarize_model(old_dense), _summarize_model(dense)
        data.setdefault("embedding", {})["dense"] = dense
    else:  # server
        current_server = _config_section(data, "server")
        server_dict = _wizard_server(current=current_server)
        if server_dict is None:
            print("\n  Setup cancelled.\n")
            return 0
        old_summary, new_summary = (
            _summarize_server(current_server),
            _summarize_server(server_dict),
        )
        data["server"] = server_dict

    print(f"\n  {_bold('Change:')} {old_summary}")
    print(f"      {_cyan('→')}    {new_summary}")