config-overrides.js

/*
  * Copyright Amazon.com, Inc. and its affiliates. All Rights Reserved.
  * SPDX-License-Identifier: MIT
  *
  * Licensed under the MIT License. See the LICENSE accompanying this file
  * for the specific language governing permissions and limitations under
  * the License.
  */

var amplifyMeta = {};
var amplifyTeams = {};
const fs = require("fs");
const path = require('path');
if ((!fs.existsSync("./amplify/backend/amplify-meta.json")) ||
	(!fs.existsSync("./amplify/team-provider-info.json")) ||
	(!fs.existsSync("./src/aws-exports.js"))
) {
	console.error("Amplify is not configured !!");
	console.log(" please run:");
	console.log(" > amplify init");
	console.log(" Select an existing environment (choose dev to start)");
	process.exit();
} else {
	amplifyMeta = require("./amplify/backend/amplify-meta.json");
	amplifyTeams = require("./amplify/team-provider-info.json");
}
const REGEX = /.*-(\w+)/;
const AMPLIFY_ENV = amplifyMeta.storage.amplifyIdentityBrokerCodesTable.output.Name.match(REGEX)[1];

console.log("Injecting config");
console.log("AMPLIFY_ENV is " + AMPLIFY_ENV);

var appHostingDomain = undefined;
if (amplifyTeams[AMPLIFY_ENV].categories.function.amplifyIdentityBrokerPostDeployment.hostingDomain) {
	appHostingDomain = amplifyTeams[AMPLIFY_ENV].categories.function.amplifyIdentityBrokerPostDeployment.hostingDomain;
} else if (amplifyMeta.hosting.S3AndCloudFront.output.CloudFrontDomainName) {
	appHostingDomain = "https://" + amplifyMeta.hosting.S3AndCloudFront.output.CloudFrontDomainName;
} else {
	console.log("WARNING : No hosting domain defined!!");
	process.exit();
}

if (appHostingDomain) {
	const redirectSignIn = appHostingDomain;
	const redirectSignOut = appHostingDomain + "/logout";

	var rawdata = fs.readFileSync('./src/aws-exports.js', 'utf-8');

	// Inject broker domain in aws-exports.js
	var withLogout = rawdata.replace(/(redirectSignOut\"+\:[ \t]+\")(.*\")/, "$1" + redirectSignOut + "\"");
	var withBoth = withLogout.replace(/(redirectSignIn\"+\:[ \t]+\")(.*\")/, "$1" + redirectSignIn + "\"");

	fs.writeFileSync('./src/aws-exports.js', withBoth, 'utf-8');
}

module.exports = function override(config, env) {
	console.log("Build env is " + env);
	let localConfig = {};
	switch (AMPLIFY_ENV) {
		case "devxrndev": localConfig = {
			"providers": []
		};
			break;
		case "prod": localConfig = {
			"providers": ["AWSSSO", "OIDCIdentityProvider", "LoginWithAmazon", "Facebook", "Google"]
		};
			break;
		case "preprod": localConfig = {
			"providers": ["AWSSSO", "OIDCIdentityProvider", "LoginWithAmazon", "Facebook", "Google"]
		};
			break;
		default:
			localConfig = {
				"providers": [],
			};
	}

	if (!config.externals) {
		config.externals = {};
	}
	config.externals.Config = JSON.stringify(localConfig);

	return config;
}