Typescript Bootcamp

Author: jhades

rest-api/src/models/populate-db.ts

@@ -7,14 +7,50 @@ import "reflect-metadata";
 
 import {COURSES} from "./db-data";
 import {AppDataSource} from "../data-source";
+import { Course } from "./course";
+import {DeepPartial} from "typeorm";
+import {Lesson} from "./lesson";
 
 async function populateDb() {
 
     await AppDataSource.initialize();
 
     console.log(`Database connection ready.`);
 
+    const courses = Object.values(COURSES) as DeepPartial<Course>[];
 
+    const courseRepository = AppDataSource.getRepository(Course);
+
+    const lessonsRepository = AppDataSource.getRepository(Lesson);
+
+    for (let courseData of courses) {
+
+        console.log(`Inserting course ${courseData.title}`);
+
+        const course = courseRepository.create(courseData);
+
+        await courseRepository.save(course);
+
+        for (let lessonData of courseData.lessons) {
+
+            console.log(`Inserting lesson ${lessonData.title}`);
+
+            const lesson = lessonsRepository.create(lessonData);
+
+            await lessonsRepository.save(lesson);
+        }
+
+    }
+
+    const totalCourses = await courseRepository
+        .createQueryBuilder()
+        .getCount();
+
+    const totalLessons = await lessonsRepository
+        .createQueryBuilder()
+        .getCount();
+
+    console.log(` Data Inserted - courses ${totalCourses}, lessons ${totalLessons}`);
 
 }