void DeterminePageId()

in Tools/msi/bundle/bootstrap/PythonBootstrapperApplication.cpp [2492:2594]
90 lines of code
41 McCabe index (conditional complexity)

    void DeterminePageId(__in PYBA_STATE state, __out DWORD* pdwPageId) {
        LONGLONG simple;

        if (BOOTSTRAPPER_DISPLAY_PASSIVE == _command.display) {
            switch (state) {
            case PYBA_STATE_INITIALIZED:
                *pdwPageId = BOOTSTRAPPER_ACTION_HELP == _command.action
                    ? _pageIds[PAGE_HELP]
                    : _pageIds[PAGE_LOADING];
                break;

            case PYBA_STATE_HELP:
                *pdwPageId = _pageIds[PAGE_HELP];
                break;

            case PYBA_STATE_DETECTING:
                *pdwPageId = _pageIds[PAGE_LOADING]
                    ? _pageIds[PAGE_LOADING]
                    : _pageIds[PAGE_PROGRESS_PASSIVE]
                        ? _pageIds[PAGE_PROGRESS_PASSIVE]
                        : _pageIds[PAGE_PROGRESS];
                break;

            case PYBA_STATE_DETECTED: __fallthrough;
            case PYBA_STATE_PLANNING: __fallthrough;
            case PYBA_STATE_PLANNED: __fallthrough;
            case PYBA_STATE_APPLYING: __fallthrough;
            case PYBA_STATE_CACHING: __fallthrough;
            case PYBA_STATE_CACHED: __fallthrough;
            case PYBA_STATE_EXECUTING: __fallthrough;
            case PYBA_STATE_EXECUTED:
                *pdwPageId = _pageIds[PAGE_PROGRESS_PASSIVE]
                    ? _pageIds[PAGE_PROGRESS_PASSIVE]
                    : _pageIds[PAGE_PROGRESS];
                break;

            default:
                *pdwPageId = 0;
                break;
            }
        } else if (BOOTSTRAPPER_DISPLAY_FULL == _command.display) {
            switch (state) {
            case PYBA_STATE_INITIALIZING:
                *pdwPageId = 0;
                break;

            case PYBA_STATE_INITIALIZED:
                *pdwPageId = BOOTSTRAPPER_ACTION_HELP == _command.action
                    ? _pageIds[PAGE_HELP]
                    : _pageIds[PAGE_LOADING];
                break;

            case PYBA_STATE_HELP:
                *pdwPageId = _pageIds[PAGE_HELP];
                break;

            case PYBA_STATE_DETECTING:
                *pdwPageId = _pageIds[PAGE_LOADING];
                break;

            case PYBA_STATE_DETECTED:
                if (_installPage == PAGE_LOADING) {
                    switch (_command.action) {
                    case BOOTSTRAPPER_ACTION_INSTALL:
                        if (_upgrading) {
                            _installPage = PAGE_UPGRADE;
                        } else if (SUCCEEDED(BalGetNumericVariable(L"SimpleInstall", &simple)) && simple) {
                            _installPage = PAGE_SIMPLE_INSTALL;
                        } else {
                            _installPage = PAGE_INSTALL;
                        }
                        break;

                    case BOOTSTRAPPER_ACTION_MODIFY: __fallthrough;
                    case BOOTSTRAPPER_ACTION_REPAIR: __fallthrough;
                    case BOOTSTRAPPER_ACTION_UNINSTALL:
                        _installPage = PAGE_MODIFY;
                        break;
                    }
                }
                *pdwPageId = _pageIds[_installPage];
                break;

            case PYBA_STATE_PLANNING: __fallthrough;
            case PYBA_STATE_PLANNED: __fallthrough;
            case PYBA_STATE_APPLYING: __fallthrough;
            case PYBA_STATE_CACHING: __fallthrough;
            case PYBA_STATE_CACHED: __fallthrough;
            case PYBA_STATE_EXECUTING: __fallthrough;
            case PYBA_STATE_EXECUTED:
                *pdwPageId = _pageIds[PAGE_PROGRESS];
                break;

            case PYBA_STATE_APPLIED:
                *pdwPageId = _pageIds[PAGE_SUCCESS];
                break;

            case PYBA_STATE_FAILED:
                *pdwPageId = _pageIds[PAGE_FAILURE];
                break;
            }
        }
    }