website-script.js

exports.script = function websiteScript(s3, route53, path, fs, domainName) {
	const publicPolicy = (
		`{
		"Version": "2012-10-17",
		"Statement": [
			{
				"Sid": "PublicReadGetObject",
				"Effect": "Allow",
				"Principal": "*",
				"Action": "s3:GetObject",
				"Resource": "arn:aws:s3:::${domainName}/*"
			}
		]
	}`

	);
	const wname = 'www.' + domainName;
	// CREATE THE ROOT S3 BUCKET
	var bucketParams = {
	Bucket : domainName,
	ACL : 'public-read'
	};
	var staticHostParams = {
	Bucket: domainName,
	WebsiteConfiguration: {
			ErrorDocument: {
				Key: 'error.html'
			},
			IndexDocument: {
				Suffix: 'index.html'
			},
	}
	};
	s3.createBucket(bucketParams, function(err, data) {
	if (err) {
		console.log("Error", err);
	} else {
		console.log("Root Bucket URL is ", data.Location);
		s3.putBucketWebsite(staticHostParams, function(err, data) {
		if (err) {
			console.log("Error", err);
		} else {
					//ATTACH THE PUBLIC BUCKET POLICY
					var params = {
						Bucket: domainName, 
						Policy: publicPolicy
					};
					s3.putBucketPolicy(params, function(err, data) {
						if (err){
							console.log(err, err.stack);
						} 
						else{
							console.log("public bucket policy attached")
						}     
					});
					
					//UPLOAD THE WEBSITE TEMPLATE TO THE S3 BUCKET
					const uploadDir = function(s3Path, bucketName) {		
						function walkSync(currentDirPath, callback) {
							fs.readdirSync(currentDirPath).forEach(function (name) {
									var filePath = path.join(currentDirPath, name);
									var stat = fs.statSync(filePath);
									if (stat.isFile()) {
											callback(filePath, stat);
									} 
									else if (stat.isDirectory()) {
											walkSync(filePath, callback);
									}
							});
						}			
						walkSync(s3Path, function(filePath, stat) {
							let bucketPath = filePath.substring(s3Path.length+1);
							let fext = bucketPath.substring(bucketPath.lastIndexOf('.') + 1);
							let content_type = '';
							if(fext =='svg'){
									content_type = 'image/svg+xml'
							}
							else if(fext =='jpg' || fext =='jpeg'){
									content_type = 'image/jpeg'
							}
							else if(fext =='png'){
									content_type = 'image/png'
							}
							else if(fext =='html'){
									content_type = 'text/html'
							}
							else if(fext =='css'){
									content_type = 'text/css'
							}
							else if(fext =='js'){
									content_type = 'application/javascript'
							}
							else if(fext =='txt'){
									content_type = 'text/plain'
							}
							else if(fext =='xml'){
									content_type = 'text/xml'
							}
							else if(fext =='mp4'){
									content_type = 'video/mp4'
							}        
							let fileParams = {Bucket: bucketName, Key: bucketPath, Body: fs.readFileSync(filePath), ContentType: content_type};
							s3.putObject(fileParams, function(err, data) {
								if (err) {
									console.log(err)
								} 
								else {
									console.log(`Successfully uploaded ${bucketPath} to ${bucketName}`);
								}
							});
						});
					};			
					uploadDir("website_template", domainName);

					// CREATE THE WWW REROUTE BUCKET
					var wbucketParams = {
						Bucket : wname,
					};
					var wstaticHostParams = {
						Bucket: wname,
						WebsiteConfiguration: {
							RedirectAllRequestsTo: {
								HostName: domainName, /* required */
								Protocol: 'http'
							},
						}
					};
					s3.createBucket(wbucketParams, function(err, data) {
						if (err) {
							console.log("Error", err);
						} else {
							console.log("WWW Bucket URL is ", data.Location);
							s3.putBucketWebsite(wstaticHostParams, function(err, data) {
								if (err) {
									console.log("Error", err);
								} 
								else {
									// Create Route53 Hosted Zone
									var call_ref = new Date().toString();

									var hostZoneParams = {
										CallerReference: call_ref, /* required */
										Name: domainName, /* required */
										HostedZoneConfig: {
											Comment: 'almost hosted zone',
											PrivateZone: false
										}
									};
									route53.createHostedZone(hostZoneParams, function(err, data) {
										if (err) {
											console.log(err, err.stack);
										} 
										else {
											console.log('In your Domain name registrar, please change your DNS settings to custom DNS and add the following Nameservers:')
											console.log(data.DelegationSet.NameServers);
											const hosted_id = data.HostedZone.Id.slice(data.HostedZone.Id.lastIndexOf('/') + 1);


											// Create the Alias A record for the root bucket
											var aliasParams = {
												ChangeBatch: {
													Changes: [{
														Action: "CREATE", 
														ResourceRecordSet: {
															AliasTarget: {
																DNSName: `s3-website-${process.env.AWS_REGION}.amazonaws.com`, 
																EvaluateTargetHealth: false, 
																HostedZoneId: 'Z3AQBSTGFYJSTF' // a code depending on your region and resource for more info refer to https://docs.aws.amazon.com/general/latest/gr/rande.html#s3_website_region_endpoints
															}, 
															Name: domainName, 
															Type: "A"
														}
													}], 
													Comment: "Alias Record for S3 Bucket"
												}, 
												HostedZoneId: hosted_id // the Id of your recently created hosted zone
											};
											route53.changeResourceRecordSets(aliasParams, function(err, data) {
												if (err) {
													console.log(err, err.stack);
												} 
												else {
													console.log('Succesfully created the alias A record for the root bucket');
													//Create the Alias A record for the www bucket
													var waliasParams = {
														ChangeBatch: {
															Changes: [{
																Action: "CREATE", 
																ResourceRecordSet: {
																	AliasTarget: {
																		DNSName: `s3-website-${process.env.AWS_REGION}.amazonaws.com`, 
																		EvaluateTargetHealth: false, 
																		HostedZoneId: 'Z3AQBSTGFYJSTF' // a code depending on your region and resource for more info refer to https://docs.aws.amazon.com/general/latest/gr/rande.html#s3_website_region_endpoints
																	}, 
																	Name: wname, 
																	Type: "A"
																}
															}], 
															Comment: "Alias Record for S3 Bucket"
														}, 
														HostedZoneId: hosted_id // the Id of your recently created hosted zone
													};
													route53.changeResourceRecordSets(waliasParams, function(err, data) {
														if (err) {
															console.log(err, err.stack);
														} 
														else {
															console.log('Succesfully created the alias A record for the www bucket');
															console.log('Please wait a couple of seconds ...')
														}
													});
												}
											});
											
										}
									});
								}
							});
						}

					});
				}
			});
		}
	});
}