Typescript Bootcamp

Author: jhades

rest-api/src/routes/create-course.ts

@@ -0,0 +1,58 @@
+import {NextFunction, Request, Response} from "express";
+import {logger} from "../logger";
+import {AppDataSource} from "../data-source";
+import {Course} from "../models/course";
+
+/*
+*
+* curl -X POST http://localhost:9000/api/courses -H "Content-Type:application/json" -d '{"url": "firebase-bootcamp", "title": "Firebase Bootcamp", "iconUrl": "https://angular-university.s3-us-west-1.amazonaws.com/course-images/firebase-course-1.jpg","longDescription": "Complete guided tour to the Firebase ecosystem.", "category": "BEGINNER"}'
+*
+* {"url": "firebase-bootcamp", "title": "Firebase Bootcamp", "iconUrl": "https://angular-university.s3-us-west-1.amazonaws.com/course-images/firebase-course-1.jpg","longDescription": "Complete guided tour to the Firebase ecosystem.", "category": "BEGINNER"}
+*
+* */
+
+export async function createCourse(
+    request: Request, response: Response, next:NextFunction) {
+
+    try {
+
+        logger.debug(`Called createCourse()`);
+
+        const data = request.body;
+
+        if (!data) {
+            throw `No data available, cannot save course.`;
+        }
+
+        const course = await AppDataSource.manager.transaction(
+          "REPEATABLE READ",
+            async (transactionalEntityManager) => {
+
+              const repository = transactionalEntityManager.getRepository(Course);
+
+              const result = await repository
+                  .createQueryBuilder("courses")
+                  .select("MAX(courses.seqNo)", "max")
+                  .getRawOne();
+
+              const course = repository
+                  .create({
+                      ...data,
+                      seqNo: ( result?.max ?? 0 ) + 1
+                  });
+
+              await repository.save(course);
+
+              return course;
+            }
+        );
+
+        response.status(200).json({course});
+
+    }
+    catch(error) {
+        logger.error(`Error calling createCourse()`);
+        return next(error);
+    }
+
+}

rest-api/src/server.ts

@@ -18,6 +18,7 @@ import {defaultErrorHandler} from "./middlewares/default-error-handler";
 import {findCourseByUrl} from "./routes/find-course-by-url";
 import {findLessonsForCourse} from "./routes/find-lessons-for-course";
 import {updateCourse} from "./routes/update-course";
+import {createCourse} from "./routes/create-course";
 
 const cors = require("cors");
 
@@ -42,6 +43,8 @@ function setupExpress() {
 
     app.route("/api/courses/:courseId").patch(updateCourse);
 
+    app.route("/api/courses").post(createCourse);
+
     app.use(defaultErrorHandler);
 
 }