Amplify CDK with Next.js SSR - next.js

Question

I am trying to deploy a next.js (ssr) application in AWS' Amplify using the CDK but Amplify fails to identify the app as next.js ssr. When I do it manually though, using AWS UI, app is identified as SSR and works as expected.
This is generated by aws-cdk/aws-amplify v118 as:
import * as cdk from '#aws-cdk/core';
import * as amplify from '#aws-cdk/aws-amplify';
import codebuild = require('#aws-cdk/aws-codebuild');
export class AmplifyStack extends cdk.Stack {
constructor(scope: cdk.Construct, id: string, props: cdk.StackProps) {
super(scope, id, props);
const sourceCodeProvider = new amplify.GitHubSourceCodeProvider({
owner: '.....',
repository: '....',
oauthToken: cdk.SecretValue.secretsManager('github-token'),
});
const buildSpec = codebuild.BuildSpec.fromObjectToYaml(
{
version: 1,
applications: [
{
frontend: {
phases: {
preBuild: {
commands: [
"npm install"
]
},
build: {
commands: [
"npm run build"
]
}
},
artifacts: {
baseDirectory: ".next",
files: [
"**/*"
]
},
cache: {
paths: [
"node_modules/**/*"
]
}
}
}
]
}
);
const amplifyApp = new amplify.App(this, "cdk-nf-web-app", {
sourceCodeProvider: sourceCodeProvider,
buildSpec: buildSpec
});
amplifyApp.addBranch('develop', {
basicAuth: amplify.BasicAuth.fromGeneratedPassword('dev')
});
amplifyApp.addCustomRule({
source: "</^[^.]+$|\\.(?!(css|gif|ico|jpg|js|png|txt|svg|woff|ttf|map|json)$)([^.]+$)/>",
target: "/index.html",
status: amplify.RedirectStatus.REWRITE
});
}
}
Which is identical to what AWS has generated when I do it manually from UI. The difference here is the lack of Framework identification as shown in picture. Any ideas?

Answer 1

To answer my own question, I was missing the role as without it aws won't create the necessary resources. (role: https://docs.aws.amazon.com/cdk/api/latest/docs/aws-iam-readme.html)
Edit to elaborate on how i fixed it:
Added a new role that can be used by amplify
const role = new iam.Role(this, 'amplify-role-webapp-'+props.environment, {
assumedBy: new iam.ServicePrincipal('amplify.amazonaws.com'),
description: 'Custom role permitting resources creation from Amplify',
});
and assigned a policy (AdministratorAccess) that role
let iManagedPolicy = iam.ManagedPolicy.fromAwsManagedPolicyName(
'AdministratorAccess',
);
role.addManagedPolicy(iManagedPolicy)
Then upon creating the app, i assigned the role to the app:
const amplifyApp = new amplify.App(this, "cdk-nf-web-app", {
sourceCodeProvider: sourceCodeProvider,
buildSpec: buildSpec,
role: role <--- this line here
});

Answer 2

The amplify app requires authorisation to create the relevant resources:
// This is for demonstrations purposes only; Do not give full access for production usage!
amplifyApp.grantPrincipal.addToPrincipalPolicy(new iam.PolicyStatement({
resources: ["*"],
actions: ['*'],
}))
Source Code Showcase