starting quiz tests

nextjs/src/models/local/quiz/utils/quizMarkdownUtils.ts

@@ -0,0 +1,154 @@
+import { LocalQuiz } from "../localQuiz";
+import { quizQuestionMarkdownUtils } from "./quizQuestionMarkdownUtils";
+
+const extractLabelValue = (input: string, label: string): string => {
+  const pattern = new RegExp(`${label}: (.*?)\n`);
+  const match = pattern.exec(input);
+  return match ? match[1].trim() : "";
+};
+
+const extractDescription = (input: string): string => {
+  const pattern = new RegExp("Description: (.*?)$", "s");
+  const match = pattern.exec(input);
+  return match ? match[1].trim() : "";
+};
+
+const parseBooleanOrThrow = (value: string, label: string): boolean => {
+  if (value.toLowerCase() === "true") return true;
+  if (value.toLowerCase() === "false") return false;
+  throw new Error(`Error with ${label}: ${value}`);
+};
+
+const parseBooleanOrDefault = (
+  value: string,
+  label: string,
+  defaultValue: boolean
+): boolean => {
+  if (value.toLowerCase() === "true") return true;
+  if (value.toLowerCase() === "false") return false;
+  return defaultValue;
+};
+
+const parseNumberOrThrow = (value: string, label: string): number => {
+  const parsed = parseInt(value, 10);
+  if (isNaN(parsed)) {
+    throw new Error(`Error with ${label}: ${value}`);
+  }
+  return parsed;
+};
+
+const parseDateOrThrow = (value: string, label: string): string => {
+  const date = new Date(value);
+  if (isNaN(date.getTime())) {
+    throw new Error(`Error with ${label}: ${value}`);
+  }
+  return date.toISOString();
+};
+
+const parseDateOrNull = (value: string): string | undefined => {
+  const date = new Date(value);
+  return isNaN(date.getTime()) ? undefined : date.toISOString();
+};
+
+const getQuizWithOnlySettings = (settings: string): LocalQuiz => {
+  const name = extractLabelValue(settings, "Name");
+
+  const rawShuffleAnswers = extractLabelValue(settings, "ShuffleAnswers");
+  const shuffleAnswers = parseBooleanOrThrow(
+    rawShuffleAnswers,
+    "ShuffleAnswers"
+  );
+
+  const password = extractLabelValue(settings, "Password") || undefined;
+
+  const rawShowCorrectAnswers = extractLabelValue(
+    settings,
+    "ShowCorrectAnswers"
+  );
+  const showCorrectAnswers = parseBooleanOrDefault(
+    rawShowCorrectAnswers,
+    "ShowCorrectAnswers",
+    true
+  );
+
+  const rawOneQuestionAtATime = extractLabelValue(
+    settings,
+    "OneQuestionAtATime"
+  );
+  const oneQuestionAtATime = parseBooleanOrThrow(
+    rawOneQuestionAtATime,
+    "OneQuestionAtATime"
+  );
+
+  const rawAllowedAttempts = extractLabelValue(settings, "AllowedAttempts");
+  const allowedAttempts = parseNumberOrThrow(
+    rawAllowedAttempts,
+    "AllowedAttempts"
+  );
+
+  const rawDueAt = extractLabelValue(settings, "DueAt");
+  const dueAt = parseDateOrThrow(rawDueAt, "DueAt");
+
+  const rawLockAt = extractLabelValue(settings, "LockAt");
+  const lockAt = parseDateOrNull(rawLockAt);
+
+  const description = extractDescription(settings);
+  const localAssignmentGroupName = extractLabelValue(
+    settings,
+    "AssignmentGroup"
+  );
+
+  const quiz: LocalQuiz = {
+    name,
+    description,
+    password,
+    lockAt,
+    dueAt,
+    shuffleAnswers,
+    showCorrectAnswers,
+    oneQuestionAtATime,
+    localAssignmentGroupName,
+    allowedAttempts,
+    questions: [],
+  };
+  return quiz;
+};
+
+export const quizMarkdownUtils = {
+  toMarkdown(quiz: LocalQuiz): string {
+    const questionMarkdownArray = quiz.questions.map((q) =>
+      quizQuestionMarkdownUtils.toMarkdown(q)
+    );
+    const questionDelimiter = "\n\n---\n\n";
+    const questionMarkdown = questionMarkdownArray.join(questionDelimiter);
+
+    return `Name: ${quiz.name}
+LockAt: ${quiz.lockAt ?? ""}
+DueAt: ${quiz.dueAt}
+Password: ${quiz.password ?? ""}
+ShuffleAnswers: ${quiz.shuffleAnswers.toString().toLowerCase()}
+ShowCorrectAnswers: ${quiz.showCorrectAnswers.toString().toLowerCase()}
+OneQuestionAtATime: ${quiz.oneQuestionAtATime.toString().toLowerCase()}
+AssignmentGroup: ${quiz.localAssignmentGroupName}
+AllowedAttempts: ${quiz.allowedAttempts}
+Description: ${quiz.description}
+---
+${questionMarkdown}`;
+  },
+
+  parseMarkdown(input: string): LocalQuiz {
+    const splitInput = input.split("---\n");
+    const settings = splitInput[0];
+    const quizWithoutQuestions = getQuizWithOnlySettings(settings);
+
+    const rawQuestions = splitInput.slice(1);
+    const questions = rawQuestions
+      .filter((str) => str.trim().length > 0)
+      .map((q, i) => quizQuestionMarkdownUtils.parseMarkdown(q, i));
+
+    return {
+      ...quizWithoutQuestions,
+      questions,
+    };
+  },
+};