import { DynamoDBClient, UpdateItemCommand } from '@aws-sdk/client-dynamodb'
import { DynamoDBDocumentClient } from '@aws-sdk/lib-dynamodb'

const dbClient = new DynamoDBClient()
const docClient = DynamoDBDocumentClient.from(dbClient)

const command = new UpdateItemCommand({
    TableName: 'my-table',
    Key: { id: { S: 'my-id' } },
    UpdateExpression: 'SET myList = list_append(myList, :myValue)',
    ExpressionAttributeNames: { 
        'myList': { L: [{ S: 'value1' }] }
    },
})

await docClient.send(command)

import NextAuth from 'next-auth'
import CognitoProvider from 'next-auth/providers/cognito'

const handler = NextAuth({
    providers: [
        CognitoProvider({
            clientId: process.env.COGNITO_CLIENT_ID,    // Get from aws
            clientSecret: process.env.COGNITO_CLIENT_SECRET,    // Get from aws
            issuer: process.env.COGNITO_ISSUER,    // Get from aws
        }),
    ]
})

import { signIn } from 'next-auth/client'

export default function SignIn() {
    return (
        <button onClick={() => signIn()}>Sign in</button>
    )
}

import { getServerSession } from 'next-auth/server'

export async function Page() {
    const session = await getServerSession()
    if (!session) {
        return {
            redirect: {
                destination: '/',
                permanent: false,
            },
        }
    }
    return {
        <div>
            <h1>Admin page</h1>
        </div>
    }
}

const command = new GetCommand({
    TableName: 'my-table',
    Key: { id: { S: 'my-id' } },
})

const handleImageChange = (e) => {
    const file = e.target.files[0]
    const url = URL.createObjectURL(file)
}

import { S3Client, PutObjectCommand } from '@aws-sdk/client-s3'
import { fromIni } from '@aws-sdk/credential-provider-ini'
import { getSignedUrl } from '@aws-sdk/s3-request-presigner'

export const getPresignedUrl = async (key: string) => {
    const client = new S3Client({
        credentials: fromIni(),
        region: 'us-west-2',
    })
    const command = new PutObjectCommand({
        Bucket: 'my-bucket',
        Key: key,
    })
    return getSignedUrl(client, command, { expiresIn: 3600 })
}

import { getPresignedUrl } from 'whateverfile'
const url = await getPresignedUrl('my-key')

const response = await fetch(url, {
    method: 'POST',
    headers: {
        'Content-Length': file.size,
    },
    body: JSON.stringify
})

const query = new UpdateItemCommand({
    TableName: "Table",
    Key: {
        "id": { S: "my-id" }
    },
    UpdateExpression: "ADD myMap.#key :value",
    ExpressionAttributeNames: {
        "#key": "new-key"
    },
    ExpressionAttributeValues: {
        ":value": { S: "new-value" }
    }
})