Import/Export functions

app/Controllers/ExportController.js

@@ -0,0 +1,42 @@
+const { getAllGroupVocabulary, getAllLanguagePackageVocabulary } = require('../Services/ExportServiceProvider.js');
+const catchAsync = require('../utils/catchAsync');
+const { getVersion } = require('../Services/InfoServiceProvider');
+
+const exportGroup = catchAsync(async (req, res) => {
+  // get userId from request
+  const userId = req.user.id;
+
+  // get language package id from params
+  const { groupId } = req.params;
+
+  const group = await getAllGroupVocabulary(userId, groupId);
+  const formatted = {
+    version: getVersion(),
+    type: 'vocascan/group',
+    ...group.toJSON(),
+  };
+  res.send(formatted);
+});
+
+const exportLanguagePackage = catchAsync(async (req, res) => {
+  // get userId from request
+  const userId = req.user.id;
+
+  // get language package id from params
+  const { languagePackageId } = req.params;
+  const queryStatus = (req.query.queryStatus || 'false') === 'true';
+
+  const languagePackage = await getAllLanguagePackageVocabulary({ userId, languagePackageId, queryStatus });
+  const formatted = {
+    version: getVersion(),
+    type: 'vocascan/package',
+    ...languagePackage.toJSON(),
+  };
+
+  res.send(formatted);
+});
+
+module.exports = {
+  exportGroup,
+  exportLanguagePackage,
+};

app/Controllers/ImportController.js

@@ -0,0 +1,32 @@
+const { storeGroupVocabulary, storeLanguagePackageVocabulary } = require('../Services/ImportServiceProvider.js');
+const catchAsync = require('../utils/catchAsync');
+const ApiError = require('../utils/ApiError.js');
+const httpStatus = require('http-status');
+
+const importVocabs = catchAsync(async (req, res) => {
+  // get userId from request
+  const userId = req.user.id;
+
+  const active = (req.query.active || 'true') === 'true';
+  const activate = (req.query.activate || 'false') === 'true';
+
+  const { type } = req.body;
+  // use different types of import to separate the functions
+  if (!type) {
+    throw new ApiError(httpStatus.BAD_REQUEST, 'imported data has no Vocascan structure');
+  } else if (type === 'vocascan/package') {
+    const queryStatus = (req.query.queryStatus || 'false') === 'true';
+    await storeLanguagePackageVocabulary(req.body, userId, active, activate, queryStatus);
+  } else if (type === 'vocascan/group') {
+    const { languagePackageId } = req.query;
+    await storeGroupVocabulary(req.body, userId, languagePackageId, active, activate);
+  } else {
+    throw new ApiError(httpStatus.BAD_REQUEST, 'imported data type not recognized');
+  }
+
+  res.status(204).end();
+});
+
+module.exports = {
+  importVocabs,
+};

app/Controllers/VocabularyController.js

@@ -11,13 +11,21 @@ const addVocabularyCard = catchAsync(async (req, res) => {
   // get userId from request
   const userId = req.user.id;
   const { name, description, active, translations } = req.body;
-  const { languagePackageId } = req.params;
+  const { languagePackageId, groupId } = req.params;
 
   // check if user wants to train vocabulary card directly
   const activate = req.query.activate === 'true';
 
   // create vocabulary card
-  const vocabularyCard = await createVocabularyCard(req.params, name, description, userId, active, activate);
+  const vocabularyCard = await createVocabularyCard({
+    languagePackageId,
+    groupId,
+    name,
+    description,
+    userId,
+    active,
+    activate,
+  });
 
   // parse vocabulary card id from response and create translations
   await createTranslations(translations, userId, languagePackageId, vocabularyCard.id);

app/Services/DrawerServiceProvider.js

@@ -12,12 +12,18 @@ async function createDrawer(languagePackageId, stage, queryInterval, userId) {
   return drawer;
 }
 
-async function createDrawers(drawers, languagePackageId, userId) {
-  await Promise.all(
-    drawers.map(async (drawer) => {
-      await createDrawer(languagePackageId, drawer.stage, drawer.queryInterval, userId);
-    })
+async function createDrawers(drawers, languagePackageId, userId, transaction) {
+  const createdDrawers = await Drawer.bulkCreate(
+    drawers.map((drawer) => ({
+      userId,
+      languagePackageId,
+      stage: drawer.stage,
+      queryInterval: drawer.queryInterval,
+    })),
+    { transaction }
   );
+
+  return createdDrawers;
 }
 
 module.exports = {

app/Services/ExportServiceProvider.js

@@ -0,0 +1,85 @@
+const { VocabularyCard, Translation, Group, LanguagePackage, Drawer } = require('../../database');
+
+// get every vocabulary of a group
+async function getAllGroupVocabulary(userId, groupId) {
+  const group = await Group.findOne({
+    attributes: ['name', 'description'],
+    include: [
+      {
+        model: VocabularyCard,
+        attributes: ['name', 'description'],
+        include: [
+          {
+            model: Translation,
+            attributes: ['name'],
+          },
+        ],
+      },
+    ],
+    where: {
+      id: groupId,
+      userId,
+    },
+  });
+  return group;
+}
+
+async function getAllLanguagePackageVocabulary({ userId, languagePackageId, queryStatus }) {
+  // Get user with email from database
+  const languagePackage = await LanguagePackage.findOne({
+    // if groups is true, return groups to every language package
+    include: queryStatus
+      ? [
+          {
+            model: Group,
+            attributes: ['name', 'description'],
+            include: [
+              {
+                model: VocabularyCard,
+                attributes: queryStatus ? ['name', 'description', 'drawerId'] : ['name', 'description'],
+                include: [
+                  {
+                    model: Translation,
+                    attributes: ['name'],
+                  },
+                ],
+              },
+            ],
+          },
+          {
+            model: Drawer,
+            attributes: ['id', 'stage', 'queryInterval'],
+          },
+        ]
+      : [
+          {
+            model: Group,
+            attributes: ['name', 'description'],
+            include: [
+              {
+                model: VocabularyCard,
+                attributes: queryStatus ? ['name', 'description', 'drawerId'] : ['name', 'description'],
+                include: [
+                  {
+                    model: Translation,
+                    attributes: ['name'],
+                  },
+                ],
+              },
+            ],
+          },
+        ],
+    attributes: ['name', 'foreignWordLanguage', 'translatedWordLanguage', 'vocabsPerDay', 'rightWords'],
+    where: {
+      userId,
+      id: languagePackageId,
+    },
+  });
+
+  return languagePackage;
+}
+
+module.exports = {
+  getAllGroupVocabulary,
+  getAllLanguagePackageVocabulary,
+};

app/Services/ImportServiceProvider.js

@@ -0,0 +1,173 @@
+const { Group, VocabularyCard, Translation, Drawer, sequelize } = require('../../database');
+const ApiError = require('../utils/ApiError.js');
+const httpStatus = require('http-status');
+const { createDrawers } = require('./DrawerServiceProvider.js');
+const { createLanguagePackage } = require('./LanguagePackageServiceProvider.js');
+const { drawers } = require('../utils/constants.js');
+
+async function storeGroupVocabulary(
+  { name, description, VocabularyCards },
+  userId,
+  languagePackageId,
+  active,
+  activate
+) {
+  const transaction = await sequelize.transaction();
+
+  try {
+    const group = await Group.create(
+      {
+        userId,
+        languagePackageId,
+        name,
+        description,
+        active,
+      },
+      { transaction }
+    );
+
+    const drawer = await Drawer.findOne({
+      where: {
+        userId,
+        languagePackageId,
+        stage: activate ? 1 : 0,
+      },
+      transaction,
+    });
+
+    const yesterday = new Date().setDate(new Date().getDate() - 1);
+
+    await Promise.all(
+      VocabularyCards.map(async (vocabularyCard) => {
+        await VocabularyCard.create(
+          {
+            userId,
+            languagePackageId,
+            groupId: group.id,
+            drawerId: drawer.id,
+            name: vocabularyCard.name,
+            description: vocabularyCard.description,
+            lastQuery: yesterday,
+            lastQueryCorrect: yesterday,
+            active,
+            Translations: vocabularyCard.Translations.map((translation) => ({
+              name: translation.name,
+              userId,
+              languagePackageId,
+            })),
+          },
+          {
+            transaction,
+            include: [
+              {
+                model: Translation,
+              },
+            ],
+          }
+        );
+      })
+    );
+
+    await transaction.commit();
+  } catch (error) {
+    await transaction.rollback();
+    throw new ApiError(httpStatus.BAD_REQUEST, 'Error importing vocabs');
+  }
+}
+
+async function storeLanguagePackageVocabulary(
+  { name, foreignWordLanguage, translatedWordLanguage, vocabsPerDay, rightWords, Groups, Drawers },
+  userId,
+  active,
+  activate,
+  queryStatus
+) {
+  if (!Drawers && queryStatus) {
+    throw new ApiError(httpStatus.BAD_REQUEST, 'No exported drawers found');
+  }
+
+  const transaction = await sequelize.transaction();
+
+  try {
+    // create language Package
+    const createdLanguagePackage = await createLanguagePackage(
+      { name, foreignWordLanguage, translatedWordLanguage, vocabsPerDay, rightWords },
+      userId,
+      transaction
+    );
+
+    let getDrawer = () => null;
+    const yesterday = new Date().setDate(new Date().getDate() - 1);
+
+    // store drawers for language package in database
+    if (queryStatus) {
+      const createdDrawers = await createDrawers(Drawers, createdLanguagePackage.id, userId, transaction);
+      const drawerMap = Drawers.reduce(
+        (_drawerMap, oldDrawer, index) => ({
+          ..._drawerMap,
+          [oldDrawer.id]: createdDrawers[index],
+        }),
+        {}
+      );
+
+      getDrawer = (oldId) => drawerMap[oldId];
+    } else {
+      const createdDrawers = await createDrawers(drawers, createdLanguagePackage.id, userId, transaction);
+      const drawer = createdDrawers.find((_drawer) => +_drawer.stage === (activate ? 1 : 0));
+
+      getDrawer = () => drawer;
+    }
+
+    await Promise.all(
+      Groups.map(async (group) => {
+        await Group.create(
+          {
+            userId,
+            languagePackageId: createdLanguagePackage.id,
+            name: group.name,
+            description: group.description,
+            active,
+            VocabularyCards: group.VocabularyCards.map((vocabularyCard) => ({
+              userId,
+              languagePackageId: createdLanguagePackage.id,
+              drawerId: queryStatus ? getDrawer(vocabularyCard.drawerId).id : getDrawer().id,
+              name: vocabularyCard.name,
+              description: vocabularyCard.description,
+              lastQuery: yesterday,
+              lastQueryCorrect: yesterday,
+              active,
+              Translations: vocabularyCard.Translations.map((translation) => ({
+                name: translation.name,
+                userId,
+                languagePackageId: createdLanguagePackage.id,
+              })),
+            })),
+          },
+          {
+            transaction,
+            include: [
+              {
+                model: VocabularyCard,
+                include: [
+                  {
+                    model: Translation,
+                  },
+                ],
+              },
+            ],
+          }
+        );
+      })
+    );
+
+    await transaction.commit();
+  } catch (error) {
+    await transaction.rollback();
+    throw new ApiError(httpStatus.BAD_REQUEST, 'Error importing vocabs');
+  }
+}
+
+module.exports = {
+  storeGroupVocabulary,
+  storeLanguagePackageVocabulary,
+};