Navigation rework, added prompt edit to components that were missing

src/stores/exam/reducers/index.ts

@@ -0,0 +1,161 @@
+import { Module } from "@/interfaces";
+import { ExamState } from "../types";
+import { SESSION_ACTIONS, SessionActions, sessionReducer } from "./session";
+import { Exam, UserSolution } from "@/interfaces/exam";
+import { updateExamWithUserSolutions } from "../utils";
+import { defaultExamUserSolutions } from "@/utils/exams";
+import { Assignment } from "@/interfaces/results";
+import { Stat } from "@/interfaces/user";
+import { convertToUserSolutions } from "@/utils/stats";
+
+export type RootActions =
+    { type: 'INIT_EXAM'; payload: { exams: Exam[], modules: Module[], assignment?: Assignment } } |
+    { type: 'INIT_SOLUTIONS'; payload: { exams: Exam[], modules: Module[], stats: Stat[], timeSpent?: number, inactivity?: number } } |
+    { type: 'UPDATE_TIMERS'; payload: { timeSpent: number; inactivity: number; timeSpentCurrentModule: number;} } |
+    { type: 'FINALIZE_MODULE'; payload: { updateTimers: boolean } } |
+    { type: 'FINALIZE_MODULE_SOLUTIONS' }
+
+
+export type Action = RootActions | SessionActions;
+
+export const rootReducer = (
+    state: ExamState,
+    action: Action
+): Partial<ExamState> => {
+
+    if (SESSION_ACTIONS.includes(action.type as any)) {
+        return sessionReducer(action as SessionActions);
+    }
+
+    switch (action.type) {
+        case 'INIT_EXAM': {
+            const { exams, modules, assignment } = action.payload;
+
+            let examAndSolutions = {}
+
+            // A new exam is about to start,
+            // fill the first module with defaultUserSolutions
+            let defaultSolutions = exams.map(defaultExamUserSolutions).flat();
+            examAndSolutions = {
+                userSolutions: defaultSolutions,
+                exam: updateExamWithUserSolutions(exams[0], defaultSolutions)
+            }
+
+            if (assignment) {
+                examAndSolutions = { ...examAndSolutions, assignment }
+            }
+
+            // now all the modules start at 0 since navigation
+            // is now handled at the module page's and no re-renders
+            // reset the initial render caused by the timers
+            // no need to do all that weird chainning with -1 
+            // on some modules and triggering next() to update final solution
+            // with hasExamEnded flag
+            return {
+                moduleIndex: 0,
+                partIndex: 0,
+                exerciseIndex: 0,
+                questionIndex: 0,
+                exams: exams,
+                selectedModules: modules,
+                showSolutions: false,
+                ...examAndSolutions
+            }
+        };
+        case 'INIT_SOLUTIONS': {
+            const { exams, modules, stats, timeSpent, inactivity } = action.payload;
+
+            let time = {}
+            if (timeSpent) time = { timeSpent }
+            if (inactivity) time = { ...time, inactivity }
+
+            return {
+                moduleIndex: -1,
+                partIndex: 0,
+                exerciseIndex: 0,
+                questionIndex: 0,
+                exams: exams,
+                selectedModules: modules,
+                showSolutions: true,
+                userSolutions: convertToUserSolutions(stats),
+                ...time
+            }
+        }
+        case 'UPDATE_TIMERS': {
+            // Just assigning the timers at once instead of two different calls
+            const { timeSpent, inactivity, timeSpentCurrentModule } = action.payload;
+            return { 
+                timeSpentCurrentModule,
+                timeSpent, 
+                inactivity 
+            }
+        };
+        case 'FINALIZE_MODULE': {
+            const { updateTimers } = action.payload;
+
+            // To finalize a module first flag the timers to be updated
+            if (updateTimers) {
+                return {
+                    flags: { ...state.flags, finalizeModule: true }
+                }
+            } else {
+                // then check whether there are more modules in the exam, if there are
+                // setup the next module
+                if (state.moduleIndex + 1 < state.selectedModules.length) {
+                    return {
+                        moduleIndex: state.moduleIndex + 1,
+                        partIndex: 0,
+                        exerciseIndex: 0,
+                        questionIndex: 0,
+                        exam: updateExamWithUserSolutions(state.exams[state.moduleIndex + 1], state.userSolutions),
+                        flags: {
+                            ...state.flags,
+                            finalizeModule: false,
+                        }
+                    }
+                } else {
+                    // if there are no modules left, flag finalizeExam 
+                    // so that the stats are uploaded in ExamPage
+                    // and the Finish view is set there, no need to 
+                    // dispatch another init
+                    return {
+                        flags: {
+                            ...state.flags,
+                            finalizeModule: false,
+                            finalizeExam: true,
+                        }
+                    }
+                }
+            }
+        }
+        case 'FINALIZE_MODULE_SOLUTIONS': {
+            if (state.flags.reviewAll) {
+                const notLastModule = state.moduleIndex < state.selectedModules.length;
+                const moduleIndex = notLastModule ? state.moduleIndex + 1 : -1;
+                if (notLastModule) {
+                    return {
+                        questionIndex: 0,
+                        exerciseIndex: 0,
+                        partIndex: 0,
+                        exam: state.exams[moduleIndex + 1],
+                        moduleIndex: moduleIndex
+                    }
+                } else {
+                    return {
+                        questionIndex: 0,
+                        exerciseIndex: 0,
+                        partIndex: 0,
+                        moduleIndex: -1
+                    }
+                }
+
+            } else {
+                return {
+                    moduleIndex: -1
+                }
+            }
+        }
+        default:
+            return {};
+    }
+};