chore: import upstream snapshot with attribution

tools/scripts/seed-exams/create-exams.js

@@ -0,0 +1,80 @@
+import { readFileSync } from 'fs';
+import path, { join } from 'path';
+import { fileURLToPath } from 'url';
+import debug from 'debug';
+import dotenv from 'dotenv';
+import yaml from 'js-yaml';
+import { MongoClient, ObjectId } from 'mongodb';
+
+import { validateExamSchema } from './exam-schema.js';
+
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = path.dirname(__filename);
+
+const log = debug('fcc:tools:seedExams');
+
+dotenv.config({ path: path.resolve(__dirname, '../../../.env') });
+const { MONGOHQ_URL } = process.env;
+
+// Only these will be added to or updated in the database
+const examFilenames = [
+  'foundational-c-sharp-with-microsoft-certification-exam.yml',
+  'example-certification-exam.yml'
+];
+
+const client = new MongoClient(MONGOHQ_URL);
+
+function handleError(err, client) {
+  if (err) {
+    console.error('Oh noes!! Error seeding exams.');
+    console.error(err);
+    try {
+      client.close();
+    } catch {
+      // no-op
+    } finally {
+      process.exit(1);
+    }
+  }
+}
+
+const seed = async () => {
+  await client.db('admin').command({ ping: 1 });
+  log('Connected successfully to mongo');
+
+  const db = client.db('freecodecamp');
+  const exams = db.collection('Exam');
+  for (const filename of examFilenames) {
+    try {
+      const examPath = join(__dirname, 'exams', filename);
+      const examFile = readFileSync(examPath, { encoding: 'utf-8' });
+      const examJson = yaml.load(examFile);
+      const validExam = validateExamSchema(examJson);
+
+      if (validExam.error) {
+        throw new Error(
+          `Invalid exam schema for '${filename}': ${validExam.error.message}`
+        );
+      }
+
+      examJson._id = new ObjectId(examJson._id);
+
+      // Update existing database object, or create new if it doesn't exist
+      await exams.updateOne(
+        { _id: examJson._id },
+        { $set: examJson },
+        { upsert: true }
+      );
+
+      log(`'${examJson.title}' added to exams database.`);
+    } catch (err) {
+      handleError(err, client);
+    }
+  }
+
+  log('Finished seeding exams.');
+};
+
+seed()
+  .then(() => client.close())
+  .catch(err => handleError(err, client));