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import { StudentAssignmentAPI } from "@/api/student/StudentAssignmentAPI.js";
export const _studentFetchAssignmentQuestions = createAsyncThunk(
"student/fetchAssignmentQuestions",
async (assignmentId, { rejectWithValue }) => {
try {
const response = await StudentAssignmentAPI.prototype.fetchSpecificAssignmentQuestions(assignmentId);
return response;
} catch (error) {
return rejectWithValue(error.response.data);
}
}
);
const StudentQuestionPage = createSlice({
name: "StudentQuestionPage",
initialState: {
assignmentQuestions: [],
myAnswers: {
isShow: true,
data: [],
version: 0,
},
remainingTime: null,
settings: {
layout: "2",
showTotalAnswers: true,
showTimer: true,
questionTextSize: 20,
choiceTextSize: 15,
voice: {
speed: 1,
volume: 1,
},
},
hasErrors: null,
isLoading: false,
// Set once by LockdownGuard's onThresholdExceeded when the backend reports the
// browser-lockdown violation threshold exceeded (see
// docs/implementation/browser_lockdown_violation_tracking.md). AnswerTracker.jsx
// watches this the same way it watches the close-time countdown, to auto-submit
// and lock the student out.
violationLockout: { triggered: false, violationCount: 0, maxViolations: 3 },
},
reducers: {
_updateQuestionsData: (state, action) => {
state.assignmentQuestions = [...action.payload];
},
_updateMyAnswersData: (state, action) => {
state.myAnswers.data = [...action.payload];
},
_addMyAnswer: (state, action) => {
const index = state.myAnswers.data.findIndex((item) => item.questionId === action.payload.questionId);
if (index !== -1) {
// Direct mutation works with Immer
state.myAnswers.data[index].answer = action.payload.answer;
} else {
state.myAnswers.data.push(action.payload);
}
// Increment version to trigger re-render
state.myAnswers.version += 1;
},
_updateQuestionFlag: (state, action) => {
state.myAnswers.data[action.payload].isFlagged = !state.myAnswers.data[action.payload].isFlagged;
},
_updateShowMyAnswers: (state) => {
state.myAnswers.isShow = !state.myAnswers.isShow;
},
_updateLayout: (state, action) => {
state.settings.layout = action.payload;
},
_updateShowTimer: (state) => {
state.settings.showTimer = !state.settings.showTimer;
},
_increaseTextSize: (state, action) => {
// 30 is the maximum size
if (state.settings.questionTextSize !== 30)
state.settings.questionTextSize = state.settings.questionTextSize + 2;
if (state.settings.choiceTextSize !== 25) state.settings.choiceTextSize = state.settings.choiceTextSize + 2;
},
_decreaseTextSize: (state, action) => {
// 20 is the minimum size
if (state.settings.questionTextSize !== 20)
state.settings.questionTextSize = state.settings.questionTextSize - 2;
if (state.settings.choiceTextSize !== 15) state.settings.choiceTextSize = state.settings.choiceTextSize - 2;
},
_updateVoiceSpeed: (state, action) => {
state.settings.voice.speed = action.payload;
},
_updateVoiceVolume: (state, action) => {
state.settings.voice.volume = action.payload;
},
_setRemainingTime: (state, action) => {
state.remainingTime = action.payload;
},
_restoreQuestionPageSession: (state, action) => {
state.assignmentQuestions = action.payload.assignmentQuestions;
state.myAnswers.data = action.payload.myAnswersData;
if (action.payload.settings) {
state.settings = { ...state.settings, ...action.payload.settings };
}
},
_triggerViolationLockout: (state, action) => {
state.violationLockout = {
triggered: true,
violationCount: action.payload?.violationCount ?? state.violationLockout.violationCount,
maxViolations: action.payload?.maxViolations ?? state.violationLockout.maxViolations,
};
},
_generateAnswersModel: (state, action) => {
// for teacher student-preview
if (action.payload) {
state.myAnswers.data = action.payload.map((question) => ({
questionId: question._id,
questionType: question.questionType.toLowerCase(),
isFlagged: false,
answer: "",
}));
// for student preview
} else {
state.myAnswers.data = state.assignmentQuestions.map((question) => ({
questionId: question._id,
questionType: question.questionType,
isFlagged: false,
studentAnswer: "",
}));
}
},
},
extraReducers: (builder) => {
builder
//fetch assignment questions
.addCase(_studentFetchAssignmentQuestions.pending, (state) => {
state.assignmentQuestions = null;
state.hasErrors = null;
state.isLoading = true;
// A fresh attempt is starting to load — whatever violationLockout was
// left over from a PREVIOUS assignment (or a previous attempt of this
// same one) must not carry into it. Redux state persists across
// client-side navigation between assignments (unlike a real page
// refresh, which recreates the store from its default state), so
// without this reset, a student who ever tripped the lockout once in
// this browser tab would have every assignment they open afterward
// auto-submitted on mount, with zero actual violations against it.
state.violationLockout = { triggered: false, violationCount: 0, maxViolations: 3 };
})
.addCase(_studentFetchAssignmentQuestions.fulfilled, (state, action) => {
state.assignmentDetails = { ...action.payload.data.assignment.details };
state.assignmentQuestions = [...action.payload.data.assignment.questions];
state.myAnswers.data = [...(action.payload.data.assignment.student_answers ?? [])];
state.remainingTime = action.payload.data.assignment.remaining_time;
state.hasErrors = null;
state.isLoading = false;
})
.addCase(_studentFetchAssignmentQuestions.rejected, (state, action) => {
state.assignmentQuestions = null;
state.hasErrors = action.error.message;
state.isLoading = false;
});
},
});
export const {
_updateQuestionsData,
_updateMyAnswersData,
_addMyAnswer,
_updateQuestionFlag,
_updateShowMyAnswers,
_updateLayout,
_updateShowTimer,
_increaseTextSize,
_decreaseTextSize,
_updateVoiceSpeed,
_updateVoiceVolume,
_generateAnswersModel,
_setRemainingTime,
_restoreQuestionPageSession,
_triggerViolationLockout,
} = StudentQuestionPage.actions;
export default StudentQuestionPage;
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