moving v2 to top level

src/services/fileStorage/lectureFileStorageService.ts

@@ -0,0 +1,121 @@
+
+import path from "path";
+import { basePath } from "./utils/fileSystemUtils";
+import fs from "fs/promises";
+import {
+  getLectureWeekName,
+  lectureFolderName,
+  lectureToString,
+  parseLecture,
+} from "./utils/lectureUtils";
+import { Lecture } from "@/models/local/lecture";
+import {
+  getDayOfWeek,
+  LocalCourseSettings,
+} from "@/models/local/localCourseSettings";
+import { getDateFromStringOrThrow } from "@/models/local/utils/timeUtils";
+
+export async function getLectures(courseName: string) {
+  const courseLectureRoot = path.join(basePath, courseName, lectureFolderName);
+  if (!(await directoryExists(courseLectureRoot))) {
+    return [];
+  }
+
+  const entries = await fs.readdir(courseLectureRoot, { withFileTypes: true });
+  const lectureWeekFolders = entries
+    .filter((entry) => entry.isDirectory())
+    .map((entry) => entry.name);
+
+  const lecturesByWeek = await Promise.all(
+    lectureWeekFolders.map(async (weekName) => {
+      const weekBasePath = path.join(courseLectureRoot, weekName);
+      const fileNames = await fs.readdir(weekBasePath);
+      const lectures = await Promise.all(
+        fileNames.map(async (fileName) => {
+          const filePath = path.join(weekBasePath, fileName);
+          const fileContent = await fs.readFile(filePath, "utf-8");
+          const lecture = parseLecture(fileContent);
+          return lecture;
+        })
+      );
+
+      return {
+        weekName,
+        lectures,
+      };
+    })
+  );
+  return lecturesByWeek;
+}
+
+export async function updateLecture(
+  courseName: string,
+  courseSettings: LocalCourseSettings,
+  lecture: Lecture
+) {
+  const courseLectureRoot = path.join(basePath, courseName, lectureFolderName);
+  const lectureDate = getDateFromStringOrThrow(
+    lecture.date,
+    "lecture start date in update lecture"
+  );
+
+  const weekFolderName = getLectureWeekName(
+    courseSettings.startDate,
+    lecture.date
+  );
+  const weekPath = path.join(courseLectureRoot, weekFolderName);
+  if (!(await directoryExists(weekPath))) {
+    await fs.mkdir(weekPath, { recursive: true });
+  }
+
+  const lecturePath = path.join(
+    weekPath,
+    `${lectureDate.getDay()}-${getDayOfWeek(lectureDate)}.md`
+  );
+  const lectureContents = lectureToString(lecture);
+  await fs.writeFile(lecturePath, lectureContents);
+}
+
+export async function deleteLecture(
+  courseName: string,
+  courseSettings: LocalCourseSettings,
+  dayAsString: string
+) {
+  console.log("deleting lecture", courseName, dayAsString);
+  const lectureDate = getDateFromStringOrThrow(
+    dayAsString,
+    "lecture start date in update lecture"
+  );
+
+  const weekFolderName = getLectureWeekName(
+    courseSettings.startDate,
+    dayAsString
+  );
+
+  const courseLectureRoot = path.join(basePath, courseName, lectureFolderName);
+  const weekPath = path.join(courseLectureRoot, weekFolderName);
+  const lecturePath = path.join(
+    weekPath,
+    `${lectureDate.getDay()}-${getDayOfWeek(lectureDate)}.md`
+  );
+  try {
+    await fs.access(lecturePath); // throws error if no file
+    await fs.unlink(lecturePath);
+    console.log(`File deleted: ${lecturePath}`);
+  } catch (error: any) {
+    if (error?.code === "ENOENT") {
+      console.log(`Cannot delete lecture, file does not exist: ${lecturePath}`);
+    } else {
+      throw error;
+    }
+  }
+}
+
+const directoryExists = async (path: string): Promise<boolean> => {
+  try {
+    const stat = await fs.stat(path);
+    return stat.isDirectory();
+  } catch {
+    return false;
+  }
+};