Add Netlify serverless functions for adding/retrieving lists (#10)

* Add Netlify serverless functions for adding and retrieving a list from MongoDB

* Added randomstring node module as a dependency

* Added MongoDB as a dependency

.gitignore

@@ -17,6 +17,7 @@
 .env.development.local
 .env.test.local
 .env.production.local
+.env
 
 npm-debug.log*
 yarn-debug.log*

netlify/functions/add_list/add_list.js

@@ -0,0 +1,34 @@
+const { MongoClient } = require("mongodb");
+const randomstring = require("randomstring");
+
+const mongoClient = new MongoClient(process.env.MONGODB_URI);
+
+const clientPromise = mongoClient.connect();
+
+const handler = async (event) => {
+  const input = JSON.parse(event.body);
+
+  const database = (await clientPromise).db(process.env.MONGODB_DATABASE);
+  const collection = database.collection(process.env.MONGODB_COLLECTION);
+  let newURI = randomstring.generate(8);
+  try {
+    await collection.insertOne({
+      [newURI]: input.items,
+      views: 0,
+      rating: 0,
+      title: input.title,
+      type: input.type,
+      unlisted: input.unlisted,
+      tags: input.tags,
+    });
+
+    return {
+      statusCode: 200,
+      body: JSON.stringify(newURI),
+    };
+  } catch (error) {
+    return { statusCode: 500, body: error.toString() };
+  }
+};
+
+module.exports = { handler };

netlify/functions/get_list/get_list.js

@@ -0,0 +1,41 @@
+const { MongoClient } = require("mongodb");
+
+const mongoClient = new MongoClient(process.env.MONGODB_URI);
+
+const clientPromise = mongoClient.connect();
+
+const handler = async (event) => {
+  const input = event.queryStringParameters.uri;
+  try {
+    const database = (await clientPromise).db(process.env.MONGODB_DATABASE);
+    const collection = database.collection(process.env.MONGODB_COLLECTION);
+    const results = await collection
+      .find({ [input]: { $exists: true } })
+      .toArray();
+    if (results.length > 0) {
+      let viewCount = results[0].views;
+      collection.updateOne(
+        { [input]: { $exists: true } },
+        {
+          $set: {
+            views: viewCount + 1,
+          },
+        }
+      );
+
+      return {
+        statusCode: 200,
+        body: JSON.stringify(results[0]),
+      };
+    } else {
+      return {
+        statusCode: 200,
+        body: JSON.stringify("not_found"),
+      };
+    }
+  } catch (error) {
+    return { statusCode: 500, body: error.toString() };
+  }
+};
+
+module.exports = { handler };