Evaluate correct solutions

frontend/common/options.ts

@@ -231,8 +231,8 @@ export default function(bundle: Bundle) {
             if (false !== reloadTask) {
                 yield* put({type: StepperActionTypes.StepperExit});
 
-                if (!state.options.tabsEnabled) {
-                    const activeBufferName = state.buffers.activeBufferName;
+                const activeBufferName = state.buffers.activeBufferName;
+                if (!state.options.tabsEnabled && null !== activeBufferName) {
                     yield* put(bufferChangePlatform(activeBufferName, newPlatform));
                 }
             }

frontend/stepper/js/index.ts

@@ -20,10 +20,9 @@ let originalFireNow;
 let originalSetBackgroundPathVertical_;
 
 export function* loadBlocklyHelperSaga(context: QuickAlgoLibrary) {
-    let blocklyHelper;
-
-    if (!context) { return; }
-
+    if (!context) {
+        return;
+    }
     if (context && context.blocklyHelper && !context.blocklyHelper.fake) {
         context.blocklyHelper.unloadLevel();
     }
@@ -73,7 +72,32 @@ export function* loadBlocklyHelperSaga(context: QuickAlgoLibrary) {
         };
     }
 
-    blocklyHelper = window.getBlocklyHelper(context.infos.maxInstructions, context);
+    context.blocklyHelper = createBlocklyHelper(context);
+    context.onChange = () => {};
+
+    // There is a setTimeout delay in Blockly lib between blockly program loading and Blockly firing events.
+    // We overload this function to catch the Blockly firing event instant so that we know when the program
+    // is successfully reloaded and that the events won't trigger an editor content update which would trigger
+    // a stepper.exit
+    if ('main' === state.environment) {
+        window.Blockly.Events.fireNow_ = () => {
+            originalFireNow();
+            context.blocklyHelper.reloading = false;
+        };
+    }
+
+    const groupsCategory = !!(context && context.infos && context.infos.includeBlocks && context.infos.includeBlocks.groupByCategory);
+    if (groupsCategory && 'tralalere' === options.app) {
+        overrideBlocklyFlyoutForCategories(isMobile);
+    } else if (originalSetBackgroundPathVertical_) {
+        window.Blockly.Flyout.prototype.setBackgroundPathVertical_ = originalSetBackgroundPathVertical_;
+    }
+
+    yield* put(taskIncreaseContextId());
+}
+
+export function createBlocklyHelper(context: QuickAlgoLibrary) {
+    const blocklyHelper = window.getBlocklyHelper(context.infos.maxInstructions, context);
     log.getLogger('blockly_runner').debug('[blockly.editor] load blockly helper', context, blocklyHelper);
     // Override this function to keep handling the display, and avoiding a call to un-highlight the current block
     // during loadPrograms at the start of the program execution
@@ -101,36 +125,15 @@ export function* loadBlocklyHelperSaga(context: QuickAlgoLibrary) {
         blocklyHelper.startingBlock = false;
     }
 
-    context.blocklyHelper = blocklyHelper;
-    context.onChange = () => {};
-
     if (!originalFireNow) {
         originalFireNow = window.Blockly.Events.fireNow_;
     }
 
-    // There is a setTimeout delay in Blockly lib between blockly program loading and Blockly firing events.
-    // We overload this function to catch the Blockly firing event instant so that we know when the program
-    // is successfully reloaded and that the events won't trigger an editor content update which would trigger
-    // a stepper.exit
-    if ('main' === state.environment) {
-        window.Blockly.Events.fireNow_ = () => {
-            originalFireNow();
-            blocklyHelper.reloading = false;
-        };
-    }
-
     log.getLogger('blockly_runner').debug('[blockly.editor] load context into blockly editor');
     blocklyHelper.loadContext(context);
     blocklyHelper.setIncludeBlocks(context.infos.includeBlocks);
 
-    const groupsCategory = !!(context && context.infos && context.infos.includeBlocks && context.infos.includeBlocks.groupByCategory);
-    if (groupsCategory && 'tralalere' === options.app) {
-        overrideBlocklyFlyoutForCategories(isMobile);
-    } else if (originalSetBackgroundPathVertical_) {
-        window.Blockly.Flyout.prototype.setBackgroundPathVertical_ = originalSetBackgroundPathVertical_;
-    }
-
-    yield* put(taskIncreaseContextId());
+    return blocklyHelper;
 }
 
 export const overrideBlocklyFlyoutForCategories = (isMobile: boolean) => {
@@ -192,7 +195,7 @@ export const checkBlocklyCode = function (answer: Document, context: QuickAlgoLi
     let blocks;
     try {
         // This method can fail if Blockly is not loaded in the DOM. In this case it's ok we don't make the check
-        blocks = getBlocksFromXml(blockly);
+        blocks = getBlocksFromXml(state, context, blockly);
     } catch (e) {
         console.error(e);
         return;
@@ -268,7 +271,7 @@ const getBlockCount = function (block, context: QuickAlgoLibrary) {
     return 1;
 }
 
-export const getBlocklyBlocksUsage = function (answer: Document, context: QuickAlgoLibrary) {
+export const getBlocklyBlocksUsage = function (answer: Document, context: QuickAlgoLibrary, state: AppStore) {
     // We cannot evaluate blocks as long as the answer has not been loaded into Blockly
     // Thus we wait that context.blocklyHelper.programs is filled (by BlocklyEditor)
     const blockly = (answer as unknown as BlockDocument)?.content?.blockly;
@@ -284,7 +287,7 @@ export const getBlocklyBlocksUsage = function (answer: Document, context: QuickA
     let blocks;
     try {
         // This method can fail if Blockly is not loaded in the DOM. In this case it's ok we don't make the check
-        blocks = getBlocksFromXml(blockly);
+        blocks = getBlocksFromXml(state, context, blockly);
     } catch (e) {
         console.error(e);
         return {
@@ -320,13 +323,20 @@ export function blocklyCount(blocks: any[], context: QuickAlgoLibrary): number {
     return blocksUsed;
 }
 
-const getBlocksFromXml = function (xmlText) {
-    const xml = window.Blockly.Xml.textToDom(xmlText)
-    const tmpOptions = new window.Blockly.Options({});
-    const tmpWorkspace = new window.Blockly.Workspace(tmpOptions);
-    window.Blockly.Xml.domToWorkspace(xml, tmpWorkspace);
+const getBlocksFromXml = function (state: AppStore, context: QuickAlgoLibrary, xmlText: string) {
+    const xml = window.Blockly.Xml.textToDom(xmlText);
+
+    const blocklyHelper = createBlocklyHelper(context);
+    const language = state.options.language.split('-')[0];
+    blocklyHelper.load(language, false, 1, {});
+
+    if (!window.Blockly.mainWorkspace) {
+        window.Blockly.mainWorkspace = blocklyHelper.workspace;
+    }
+
+    window.Blockly.Xml.domToWorkspace(xml, blocklyHelper.workspace);
 
-    return tmpWorkspace.getAllBlocks();
+    return blocklyHelper.workspace.getAllBlocks();
 };
 
 export const blocklyFindLimited = (blocks, limitedUses, context) => {

frontend/stepper/platforms.ts

@@ -24,7 +24,7 @@ export interface PlatformData {
     getSpecificBlocks?: (notionsBag: NotionsBag, includeBlocks?: QuickalgoTaskIncludeBlocks) => Block[],
     runner?: typeof AbstractRunner,
     checkCode?: (document: Document, context: QuickAlgoLibrary, state: AppStore, disabledValidations: string[]) => void,
-    getBlocksUsage?: (document: Document, context: QuickAlgoLibrary) => BlocksUsage,
+    getBlocksUsage?: (document: Document, context: QuickAlgoLibrary, state?: AppStore) => BlocksUsage,
 }
 
 const platformBundles = {

frontend/submission/submission.ts

@@ -241,7 +241,9 @@ export default function (bundle: Bundle) {
 
             // Refresh test visualization
             const currentTestId = yield* appSelect(state => state.task.currentTestId);
-            yield* put(updateCurrentTestId({testId: currentTestId, record: false}));
+            if (null !== currentTestId) {
+                yield* put(updateCurrentTestId({testId: currentTestId, record: false}));
+            }
         });
 
         yield* takeEvery(submissionChangeDisplayedError, function* ({payload}) {

frontend/task/blocks/blocks.ts

@@ -238,7 +238,7 @@ function* checkSourceSaga() {
         blocksUsage.error = e.toString();
     }
 
-    const currentUsage = getBlocksUsage(answer);
+    const currentUsage = getBlocksUsage(answer, state);
     if (currentUsage) {
         const maxInstructions = context.infos.maxInstructions ? context.infos.maxInstructions : Infinity;
 

frontend/task/index.ts

@@ -109,7 +109,7 @@ import {
     bufferDissociateFromSubmission,
     bufferEdit,
     bufferEditPlain,
-    bufferResetDocument
+    bufferResetDocument, buffersInitialState
 } from '../buffers/buffers_slice';
 import {getTaskHintsSelector} from './instructions/instructions';
 import {selectActiveBufferPlatform, selectSourceBuffers} from '../buffers/buffer_selectors';
@@ -274,7 +274,7 @@ function* taskLoadSaga(app: App, action) {
 
     const currentTask = yield* appSelect(state => state.task.currentTask);
     if (!isServerTask(currentTask)) {
-        yield* call(subscribePlatformHelper);
+        yield* fork(subscribePlatformHelper);
     }
 
     if (currentTask) {
@@ -796,6 +796,11 @@ export default function (bundle: Bundle) {
 
     bundle.addSaga(watchRecordingProgressSaga);
 
+    bundle.defineAction(TaskActionTypes.TaskRunExecution);
+    bundle.addReducer(TaskActionTypes.TaskRunExecution, (state: AppStore) => {
+        state.buffers = buffersInitialState;
+    });
+
     bundle.addSaga(function* (app: App) {
         log.getLogger('task').debug('INIT TASK SAGAS');
 
@@ -982,10 +987,10 @@ export default function (bundle: Bundle) {
         yield* takeEvery(platformAnswerLoaded, function*({payload: {answer}}) {
             log.getLogger('task').debug('Platform answer loaded', answer);
             const state = yield* appSelect();
+            const currentBuffer = state.buffers.activeBufferName;
             if (state.options.tabsEnabled || !state.buffers.activeBufferName) {
                 yield* call(createSourceBufferFromDocument, answer.document, answer.platform);
-            } else {
-                const currentBuffer = state.buffers.activeBufferName;
+            } else if (null !== currentBuffer) {
                 if (state.buffers.buffers[currentBuffer].platform !== answer.platform) {
                     yield* put(bufferChangePlatform(currentBuffer, answer.platform, answer.document));
                 } else {

frontend/task/libs/quickalgo_library_factory.ts

@@ -31,7 +31,7 @@ import {selectActiveBufferPlatform} from '../../buffers/buffer_selectors';
 import {selectAvailableExecutionModes} from '../../submission/submission_selectors';
 import {submissionChangeExecutionMode} from '../../submission/submission_slice';
 
-export function* createQuickalgoLibrary() {
+export function* createQuickalgoLibrary(platformAlreadyChanged: boolean = false) {
     let state = yield* appSelect();
     let oldContext = quickAlgoLibraries.getContext(null, state.environment);
     log.getLogger('libraries').debug('Create a context', state.environment);
@@ -124,9 +124,13 @@ export function* createQuickalgoLibrary() {
         availablePlatforms = availablePlatforms.filter(platform => -1 !== taskAvailablePlatforms.indexOf(platform));
     }
     if (-1 === availablePlatforms.indexOf(state.options.platform) && availablePlatforms.length) {
+        if (platformAlreadyChanged) {
+            throw new Error("Platform has already changed once, cannot converge to a valid platform");
+        }
+
         yield* put({type: CommonActionTypes.PlatformChanged, payload: {platform: availablePlatforms[0], reloadTask: true}});
 
-        return false;
+        return yield* call(createQuickalgoLibrary, true);
     }
 
     yield* put(taskSetAvailablePlatforms(availablePlatforms));

frontend/task/platform/platform.ts

@@ -49,14 +49,15 @@ import {Codecast} from '../../app_types';
 import {Document} from '../../buffers/buffer_types';
 import {quickAlgoLibraries} from '../libs/quick_algo_libraries_model';
 import {ActionTypes} from '../../common/actionTypes';
-import {TaskAnswer} from '../task_types';
+import {isServerTask, TaskAnswer} from '../task_types';
 import {RECORDING_FORMAT_VERSION} from '../../version';
 import {BlockBufferHandler, uncompressIntoDocument} from '../../buffers/document';
 import {CodecastPlatform} from '../../stepper/codecast_platform';
 import {hasBlockPlatform} from '../../stepper/platforms';
 import {callPlatformValidate} from '../../submission/submission_actions';
 import {loadOptionsFromQuery} from '../../common/options';
 import {CodecastOptions} from '../../store';
+import {asyncGetFile} from '../../utils/api';
 
 let getTaskAnswer: () => Generator<unknown, TaskAnswer>;
 let getTaskState: () => Generator;
@@ -365,6 +366,31 @@ function* taskGetStateEventSaga ({payload: {success}}: ReturnType<typeof taskGet
     yield* call(success, strDump);
 }
 
+function* taskGetResourcesImportCorrectSolutions(resources) {
+    let taskSettingsParsed = getTaskMetadata();
+    const task = yield* appSelect(state => state.task.currentTask);
+    if (isServerTask(task)) {
+        const taskSettings = yield* call(asyncGetFile, 'taskSettings.json');
+        if (!taskSettings) {
+            return;
+        }
+        taskSettingsParsed = JSON.parse(taskSettings);
+    }
+
+    if (!taskSettingsParsed?.correctSolutions) {
+        return;
+    }
+
+    const {correctSolutions} = taskSettingsParsed;
+    resources.correct_solutions = [];
+    for (let correctSolution of correctSolutions) {
+        const {path} = correctSolution;
+        const correctedPath = path.replace(/\$TASK_PATH\/?/, '');
+        const solution = yield* call(asyncGetFile, correctedPath);
+        resources.correct_solutions.push({type: 'solution', solution, id: path, ...correctSolution});
+    }
+}
+
 function* taskGetResourcesPostSaga ({payload: {resources, callback}}: ReturnType<typeof taskGetResourcesPost>) {
     const options = yield* appSelect(state => state.options);
     let optionsToPreload = {};
@@ -388,6 +414,13 @@ function* taskGetResourcesPostSaga ({payload: {resources, callback}}: ReturnType
         }
     });
 
+    try {
+        yield* call(taskGetResourcesImportCorrectSolutions, resources);
+    } catch (e) {
+        // Avoid blocking errors here
+        console.error(e);
+    }
+
     // For Castor platform, we need to add custom scripts that will be added to the assets during the generation of the task
     const castorScriptInject = `window.codecastPreload = JSON.parse('${JSON.stringify(optionsToPreload)}');
 document.body.setAttribute('id', 'app');

frontend/task/task_types.ts

@@ -223,7 +223,7 @@ export interface TaskServer extends TaskNormalized {
 export type Task = QuickalgoTask & Partial<TaskServer>;
 
 export function isServerTask(object: Task|null): boolean {
-    return (object && null !== object.id && undefined !== object.id) || window.PEMTaskMetaData;
+    return !!((object && null !== object.id && undefined !== object.id) || window.PEMTaskMetaData);
 }
 
 export function isServerTest(object: TaskTest): boolean {

frontend/task/utils.ts

@@ -152,16 +152,16 @@ export function checkCompilingCode(answer: TaskAnswer|null, state: AppStore, dis
     }
 }
 
-export function getBlocksUsage(answer: TaskAnswer|null) {
+export function getBlocksUsage(answer: TaskAnswer|null, state: AppStore) {
     const context = quickAlgoLibraries.getContext(null, 'main');
-    if (!context) {
+    if (!context || !answer) {
         return null;
     }
 
     const {document, platform} = answer;
 
     if (platformsList[platform].getBlocksUsage) {
-        return platformsList[platform].getBlocksUsage(document, context);
+        return platformsList[platform].getBlocksUsage(document, context, state);
     }
 
     return null;

frontend/utils/api.ts

@@ -51,3 +51,24 @@ export const asyncGetJson = function (path, withToken: boolean = false) {
 
     return promise;
 };
+
+export const asyncGetFile = function(path) {
+    let req;
+    const promise = new Promise<string>(function(resolve, reject) {
+        req = request.get(path);
+
+        req.end(function(err, res) {
+            if (err || !res.ok) {
+                return reject({err, res});
+            }
+
+            resolve(res.text);
+        });
+    });
+
+    promise[CANCEL] = () => {
+        req.abort();
+    };
+
+    return promise;
+};

package.json

@@ -159,5 +159,6 @@
     "webpack-dev-middleware": "^6.1.1",
     "webpack-hot-middleware": "^2.25.4",
     "worker-loader": "^3.0.8"
-  }
+  },
+  "packageManager": "[email protected]+sha1.ac34549e6aa8e7ead463a7407e1c7390f61a6610"
 }