show_scenario Views

@ensure_csrf_cookie
def show_scenario(request, scenario_id, view_name='student_view', template='workbench/block.html'):
    """
    Render the given `scenario_id` for the given `view_name`, on the provided `template`.

    `view_name` defaults to 'student_view'.
    `template` defaults to 'block.html'.

    """
    if scenario_id == 'drivepy.0':
        scen_id = 'drivepy.0'
    elif scenario_id == 'drivepy.1':
        scen_id = 'drivepy.1'
    else:
        scen_id = ''

    if scenario_id == scen_id:
        if 'credentials' not in request.session:
            return redirect('http://drivepython.10.0.2.186.xip.io:8020/oauth2callback')
        credentials = client.OAuth2Credentials.from_json(request.session['credentials'])
        if credentials.access_token_expired:
            return redirect('http://drivepython.10.0.2.186.xip.io:8020/oauth2callback')
        else:
            http_auth = credentials.authorize(httplib2.Http())
            drive_service = discovery.build('drive', 'v3', http_auth)
            files = drive_service.files().list(q="'root' in parents",fields="nextPageToken, files(id, name, mimeType, trashed, webViewLink, fileExtension)").execute()
            items = files.get('files', [])

            student_id = get_student_id(request)
            log.info("Start show_scenario %r for student %s", scenario_id, student_id)

            try:
                scenario = get_scenarios()[scenario_id]
            except KeyError:
                raise Http404

            usage_id = scenario.usage_id
            runtime = WorkbenchRuntime(student_id)
            block = runtime.get_block(usage_id)
            render_context = {
                'activate_block_id': request.GET.get('activate_block_id', None),
                'files': items
            }
            frag = block.render(view_name, render_context)
            log.info("End show_scenario %s", scenario_id)
            return render_to_response('drivepy/drivepy.html', {
                'scenario': scenario,
                'block': block,
                'body': frag.body_html(),
                'head_html': frag.head_html(),
                'foot_html': frag.foot_html(),
                'student_id': student_id,
                'files': items
            })
    else:
        student_id = get_student_id(request)
        log.info("Start show_scenario %r for student %s", scenario_id, student_id)

        try:
            scenario = get_scenarios()[scenario_id]
        except KeyError:
            raise Http404

        usage_id = scenario.usage_id
        runtime = WorkbenchRuntime(student_id)
        block = runtime.get_block(usage_id)
        render_context = {
            'activate_block_id': request.GET.get('activate_block_id', None)
        }

        frag = block.render(view_name, render_context)
        log.info("End show_scenario %s", scenario_id)
        return render_to_response(template, {
            'scenario': scenario,
            'block': block,
            'body': frag.body_html(),
            'head_html': frag.head_html(),
            'foot_html': frag.foot_html(),
            'student_id': student_id
        })