Create a new conversation

import { randomUUID } from 'node:crypto';
import {BatchWriteItemCommand, DynamoDBClient} from '@aws-sdk/client-dynamodb';

const dynamo = new DynamoDBClient({});

export const handler = async function (event) {
    const id = randomUUID();
    const users = event.users;
    users.push(event.cognitoUsername);
    const records = users.map((user) => {
        return {
            PutRequest: {
                Item: {
                    ConversationId: {
                        S: id
                    },
                    Username: {
                        S: user
                    }
                }
            }
        };
    });

    await dynamo.send(new BatchWriteItemCommand({
        RequestItems: {
            'Chat-Conversations': records
        }
    }));

    return id;
};

{"type": "string"}

{
  "type": "array",
  "items": {
    "type": "string"
  }
}

#set($inputRoot = $input.path('$'))
{
"cognitoUsername": "Student",
"users":
[
#foreach($elem in $inputRoot)
 "$elem"
#if($foreach.hasNext),#end
#end
]
}