From 95ae8d6cf6339744bcc48bc3ac42ffbf949ea604 Mon Sep 17 00:00:00 2001
From: Alex Velez <velezllaquealex@gmail.com>
Date: Tue, 18 Feb 2025 12:06:16 -0500
Subject: [PATCH] Fix questions shopping cart and add empty questions notice

---
 .../src/views/common/QuestionsAccordion.vue   | 18 +++-
 .../subPages/SelectFromSearchResults.vue      | 14 +--
 .../QuizResourceSelection/index.vue           |  2 +-
 .../subPages/ManageSelectedQuestions.vue      | 85 ++++++++++---------
 .../strings/searchAndFilterStrings.js         |  4 +
 5 files changed, 70 insertions(+), 53 deletions(-)

diff --git a/kolibri/plugins/coach/assets/src/views/common/QuestionsAccordion.vue b/kolibri/plugins/coach/assets/src/views/common/QuestionsAccordion.vue
index 458ca40b88..8093a2cf7d 100644
--- a/kolibri/plugins/coach/assets/src/views/common/QuestionsAccordion.vue
+++ b/kolibri/plugins/coach/assets/src/views/common/QuestionsAccordion.vue
@@ -57,7 +57,7 @@
         >
           <AccordionItem
             :title="displayQuestionTitle(question, getQuestionContent(question).title)"
-            :aria-selected="selectedQuestions.includes(question.item)"
+            :aria-selected="questionIsChecked(question)"
             :headerAppearanceOverrides="{
               userSelect: dragActive ? 'none !important' : 'text',
             }"
@@ -79,7 +79,7 @@
               <KCheckbox
                 v-if="isSelectable"
                 class="accordion-item-checkbox"
-                :checked="selectedQuestions.includes(question.item)"
+                :checked="questionIsChecked(question)"
                 :disabled="questionCheckboxDisabled(question)"
                 @change="
                   (value, $event) => handleQuestionCheckboxChange(question.item, value, $event)
@@ -169,11 +169,20 @@
         return props.selectedQuestions.length >= props.maxSelectableQuestions;
       }
 
+      function questionIsChecked(question) {
+        if (props.unselectableQuestionItems?.includes(question.item)) {
+          return true;
+        }
+        return props.selectedQuestions.includes(question.item);
+      }
+
       const selectableQuestions = computed(() => {
         if (!props.isSelectable) {
           return [];
         }
-        return props.questions.filter(question => !questionCheckboxDisabled(question));
+        return props.questions.filter(
+          question => !props.unselectableQuestionItems?.includes(question.item),
+        );
       });
 
       const selectAllIsChecked = computed(
@@ -197,7 +206,7 @@
         if (props.disabled) {
           return true;
         }
-        if (props.maxSelectableQuestions === null) {
+        if (props.maxSelectableQuestions === null || selectAllIsChecked.value) {
           return false;
         }
         if (props.selectedQuestions.length >= props.maxSelectableQuestions) {
@@ -220,6 +229,7 @@
 
         moveUpOne,
         moveDownOne,
+        questionIsChecked,
         displayQuestionTitle,
         questionCheckboxDisabled,
 
diff --git a/kolibri/plugins/coach/assets/src/views/lessons/LessonSummaryPage/sidePanels/LessonResourceSelection/subPages/SelectFromSearchResults.vue b/kolibri/plugins/coach/assets/src/views/lessons/LessonSummaryPage/sidePanels/LessonResourceSelection/subPages/SelectFromSearchResults.vue
index 827a576301..7d806c0db4 100644
--- a/kolibri/plugins/coach/assets/src/views/lessons/LessonSummaryPage/sidePanels/LessonResourceSelection/subPages/SelectFromSearchResults.vue
+++ b/kolibri/plugins/coach/assets/src/views/lessons/LessonSummaryPage/sidePanels/LessonResourceSelection/subPages/SelectFromSearchResults.vue
@@ -150,13 +150,6 @@
         required: false,
         default: null,
       },
-      /**
-       * Function that receives a resourceId and returns a link to the resource.
-       */
-      getResourceLink: {
-        type: Function,
-        required: true,
-      },
       /**
        * The target entity for the selection.
        * It can be either 'quiz' or 'lesson'.
@@ -173,6 +166,13 @@
         required: false,
         default: null,
       },
+      /**
+       * Function that receives a resourceId and returns a link to the resource.
+       */
+      getResourceLink: {
+        type: Function,
+        required: true,
+      },
     },
     computed: {
       resultsCountMessage() {
diff --git a/kolibri/plugins/coach/assets/src/views/quizzes/CreateExamPage/sidePanels/QuizResourceSelection/index.vue b/kolibri/plugins/coach/assets/src/views/quizzes/CreateExamPage/sidePanels/QuizResourceSelection/index.vue
index 69b2593eec..d8301ed7ef 100644
--- a/kolibri/plugins/coach/assets/src/views/quizzes/CreateExamPage/sidePanels/QuizResourceSelection/index.vue
+++ b/kolibri/plugins/coach/assets/src/views/quizzes/CreateExamPage/sidePanels/QuizResourceSelection/index.vue
@@ -189,7 +189,7 @@
       const settings = ref({
         maxQuestions: null,
         questionCount: null,
-        isChoosingManually: true,
+        isChoosingManually: false,
         selectPracticeQuiz,
       });
       watch(
diff --git a/kolibri/plugins/coach/assets/src/views/quizzes/CreateExamPage/sidePanels/QuizResourceSelection/subPages/ManageSelectedQuestions.vue b/kolibri/plugins/coach/assets/src/views/quizzes/CreateExamPage/sidePanels/QuizResourceSelection/subPages/ManageSelectedQuestions.vue
index 1bee7df45b..1ed371d2c4 100644
--- a/kolibri/plugins/coach/assets/src/views/quizzes/CreateExamPage/sidePanels/QuizResourceSelection/subPages/ManageSelectedQuestions.vue
+++ b/kolibri/plugins/coach/assets/src/views/quizzes/CreateExamPage/sidePanels/QuizResourceSelection/subPages/ManageSelectedQuestions.vue
@@ -1,20 +1,22 @@
 <template>
 
+  <p v-if="workingQuestions.length === 0">
+    {{ emptyQuestionsList$() }}
+  </p>
   <QuestionsAccordion
+    v-else
     :questions="workingQuestions"
     :getQuestionContent="getQuestionContent"
-    :selectedQuestions="selectedQuestionsInPreview"
-    :selectAllIsChecked="selectAllIsChecked"
-    :selectAllIsIndeterminate="selectAllIsIndeterminate"
-    @select="handleSelect"
-    @selectAll="handleSelectAll"
+    :selectedQuestions="cartSelectedQuestions"
+    @selectQuestions="handleSelectQuestions"
+    @deselectQuestions="handleDeselectQuestions"
   >
     <template #header-trailing-actions>
       <KIconButton
         icon="trash"
         :tooltip="coreString('deleteAction')"
         :aria-label="coreString('deleteAction')"
-        :disabled="selectedQuestionsInPreview.length === 0"
+        :disabled="cartSelectedQuestions.length === 0"
         @click="deleteQuestions"
       />
     </template>
@@ -39,6 +41,8 @@
 
 <script>
 
+  import uniq from 'lodash/uniq';
+  import { getCurrentInstance, watch } from 'vue';
   import commonCoreStrings from 'kolibri/uiText/commonCoreStrings';
   import { searchAndFilterStrings } from 'kolibri-common/strings/searchAndFilterStrings';
   import QuestionsAccordion from '../../../../../common/QuestionsAccordion.vue';
@@ -50,14 +54,37 @@
       QuestionsAccordion,
     },
     mixins: [commonCoreStrings],
-    setup() {
-      const { openExerciseLabel$ } = searchAndFilterStrings;
+    setup(props) {
+      const router = getCurrentInstance().proxy.$router;
+      const { openExerciseLabel$, numberOfSelectedQuestions$, emptyQuestionsList$ } =
+        searchAndFilterStrings;
+
+      props.setTitle(numberOfSelectedQuestions$({ count: props.selectedQuestions.length }));
+      props.setGoBack(() => {
+        router.back();
+      });
+
+      watch(
+        () => props.selectedQuestions,
+        () => {
+          props.setTitle(numberOfSelectedQuestions$({ count: props.selectedQuestions.length }));
+        },
+      );
 
       return {
         openExerciseLabel$,
+        emptyQuestionsList$,
       };
     },
     props: {
+      setTitle: {
+        type: Function,
+        default: () => {},
+      },
+      setGoBack: {
+        type: Function,
+        default: () => {},
+      },
       selectedQuestions: {
         type: Array,
         required: true,
@@ -69,55 +96,31 @@
     },
     data() {
       return {
-        // questions: stubQuestions,
-        selectedQuestionsInPreview: [],
+        cartSelectedQuestions: [],
       };
     },
     computed: {
       workingQuestions() {
         return this.selectedQuestions;
       },
-      selectAllIsChecked() {
-        return (
-          this.selectedQuestionsInPreview.length > 0 &&
-          this.selectedQuestionsInPreview.length === this.workingQuestions.length
-        );
-      },
-      selectAllIsIndeterminate() {
-        return (
-          this.selectedQuestionsInPreview.length > 0 &&
-          this.selectedQuestionsInPreview.length < this.workingQuestions.length
-        );
-      },
     },
     methods: {
-      handleSelect(questionItem, isSelected) {
-        if (isSelected) {
-          if (!this.selectedQuestionsInPreview.includes(questionItem)) {
-            this.selectedQuestionsInPreview.push(questionItem);
-          }
-        } else {
-          const index = this.selectedQuestionsInPreview.indexOf(questionItem);
-          if (index > -1) {
-            this.selectedQuestionsInPreview.splice(index, 1);
-          }
-        }
+      handleSelectQuestions(questionItems) {
+        this.cartSelectedQuestions = uniq([...this.cartSelectedQuestions, ...questionItems]);
       },
-      handleSelectAll(isSelected) {
-        if (isSelected) {
-          this.selectedQuestionsInPreview = this.workingQuestions.map(q => q.item);
-        } else {
-          this.selectedQuestionsInPreview = [];
-        }
+      handleDeselectQuestions(questionItems) {
+        this.cartSelectedQuestions = this.cartSelectedQuestions.filter(
+          q => !questionItems.includes(q),
+        );
       },
       getQuestionContent(question) {
         return this.selectedResources.find(resource => resource.id === question.exercise_id);
       },
       deleteQuestions() {
-        const questionsToDelete = this.selectedQuestionsInPreview.map(q =>
+        const questionsToDelete = this.cartSelectedQuestions.map(q =>
           this.workingQuestions.find(wq => wq.item === q),
         );
-        this.selectedQuestionsInPreview = [];
+        this.cartSelectedQuestions = [];
         this.$emit('deselectQuestions', questionsToDelete);
       },
       navigateToParent(question) {
diff --git a/packages/kolibri-common/strings/searchAndFilterStrings.js b/packages/kolibri-common/strings/searchAndFilterStrings.js
index 6c672fb77f..2dc9683c88 100644
--- a/packages/kolibri-common/strings/searchAndFilterStrings.js
+++ b/packages/kolibri-common/strings/searchAndFilterStrings.js
@@ -65,6 +65,10 @@ export const searchAndFilterStrings = createTranslator('SearchAndFilterStrings',
     message: 'No resources selected',
     context: 'Message displayed when no resources are selected',
   },
+  emptyQuestionsList: {
+    message: 'No questions selected',
+    context: 'Message displayed when no questions are selected',
+  },
   searchInFolder: {
     message: "Search in '{folder}'",
     context: 'Title for search resources in folder',