Added endpoint to allow deletes for note

takeNotes-src/deleteNote/app.js

@@ -0,0 +1,75 @@
+// default imports
+const AWS = require("aws-sdk");
+const DDB = new AWS.DynamoDB({ apiVersion: "2012-10-08" });
+const { v4: uuidv4 } = require("uuid");
+
+// environment variables
+const { TABLE_NAME, ENDPOINT_OVERRIDE, REGION } = process.env;
+const options = { region: REGION };
+AWS.config.update({ region: REGION });
+
+if (ENDPOINT_OVERRIDE !== "") {
+  options.endpoint = ENDPOINT_OVERRIDE;
+}
+
+const docClient = new AWS.DynamoDB.DocumentClient(options);
+
+// response helper
+const response = (statusCode, body, additionalHeaders) => ({
+  statusCode,
+  body: JSON.stringify(body),
+  headers: {
+    "Content-Type": "application/json",
+    "Access-Control-Allow-Origin": "*",
+    ...additionalHeaders,
+  },
+});
+
+function isValidRequest(context, event) {
+  let isIdValid =
+    event !== null &&
+    event.pathParameters !== null &&
+    event.pathParameters.id !== null &&
+    event.pathParameters.noteIdx !== null;
+
+  return isIdValid;
+}
+
+function updateRecord(recordId, noteIdx) {
+  let d = new Date();
+  console.log("record id: " + recordId + " noteIdx: " + noteIdx);
+  const params = {
+    TableName: TABLE_NAME,
+    Key: {
+      id: recordId,
+    },
+    UpdateExpression: `SET updated = :u REMOVE docBody.notes.#noteId`,
+    ExpressionAttributeNames: { "#noteId": noteIdx },
+    ExpressionAttributeValues: {
+      ":u": d.toISOString(),
+    },
+    ConditionExpression: "attribute_exists(docBody.notes.#noteId)",
+    ReturnValues: "ALL_NEW",
+  };
+  console.log("params: " + params);
+  return docClient.update(params);
+}
+
+// Lambda Handler
+exports.deleteNote = async (event, context, callback) => {
+  console.log("event: " + event);
+  console.log("body: " + event.body);
+  if (!isValidRequest(context, event)) {
+    return response(400, { message: "Error: Invalid request" });
+  }
+
+  try {
+    let data = await updateRecord(
+      event.pathParameters.id,
+      event.pathParameters.noteIdx
+    ).promise();
+    return response(200, data);
+  } catch (err) {
+    return response(400, { message: err.message });
+  }
+};

takeNotes-src/deleteNote/package.json

@@ -0,0 +1,16 @@
+{
+  "name": "post",
+  "version": "1.0.0",
+  "description": "POST handler for TakeNotes users API",
+  "main": "src/app.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1",
+    "style": "npx prettier --write ."
+  },
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "aws-sdk": "^2.834.0",
+    "uuid": "^8.3.2"
+  }
+}

template.yaml

@@ -276,6 +276,31 @@ Resources:
             RestApiId: !Ref TakeNotesApi
             Auth:
               Authorizer: CognitoAuthorizer
+  DeleteTakeNotesUserNotes:
+    Type: AWS::Serverless::Function
+    Properties:
+      CodeUri: takeNotes-src/deleteNote/
+      Handler: app.deleteNote
+      Tracing: Active
+      Policies:
+        - DynamoDBCrudPolicy:
+            TableName: !Ref TakeNotesTable
+        - CloudWatchPutMetricPolicy: {}
+      Environment:
+        Variables:
+          TABLE_NAME: !Ref TakeNotesTable
+          AWS_NODEJS_CONNECTION_REUSE_ENABLED: "1"
+          ENDPOINT_OVERRIDE: ""
+          REGION: !Ref AWS::Region
+      Events:
+        DeleteNote:
+          Type: Api
+          Properties:
+            Path: /users/{id}/notes/{noteIdx}
+            Method: DELETE
+            RestApiId: !Ref TakeNotesApi
+            Auth:
+              Authorizer: CognitoAuthorizer
   DeleteTakeNotesUserEntry:
     Type: AWS::Serverless::Function
     Properties: