PassIt! backend

PassIt! is a platform for helping tutors to post ads and for students to search a tutor.

Infrastructure architecture

Configuration

In order to build and deploy the backend on your AWS account you have to:

1. Configure on your machine your aws credentials. You can check out on the Getting Started with CDK page how to do it. When it instructs you to set the environment variables, add them to a (.gitignored) .env file in the root folder of the project instead.

2. Setup a new Google Project on Google developer console.

3. Select the project created on previous step.

4. Configure on Google developer console the OAuth consent screen:

   1. On the left navigation bar, choose OAuth Consent Screen.
   2. For Authorized Domains enter amazoncognito.com.

5. Setup on Google developer console an android client:

   1. On the left navigation bar, choose Credentials.
   2. Create your OAuth2.0 credentials by choosing OAuth client ID from the Create credentials drop-down list.
   3. Choose Android application.
   4. On package name insert the android frontend application package.
   5. On the SHA-1 digital certificate fingerprint insert your keystore SHA-1 (info).

6. Setup on Google developer console a web client:

   1. On the left navigation bar, choose Credentials.
   2. Create your OAuth2.0 credentials by choosing OAuth client ID from the Create credentials drop-down list.
   3. Choose Web application.
   4. On Authorized JavaScript origins put your user pool domain, i.e. https://<user-pool-domain-prefix>.auth.<aws-region>.amazoncognito.com (any choosen value for user-pool-domain-prefix must be globally unique).
   5. On Authorized Redirect URIs put your user pool domain with the /oauth2/idpresponse endpoint, i.e. https://<user-pool-domain-prefix>.auth.<aws-region>.amazoncognito.com/oauth2/idpresponse.

7. Set the following environment variables (or put them inside an .env file on this project root folder) with values taken from previous steps:

• USER_POOL_DOMAIN_PREFIX=<your-user-pool-domain-prefix>
• GOOGLE_ANDROID_CLIENT_ID=<your-google-android-client-id>
• GOOGLE_WEB_CLIENT_ID=<your-google-web-client-id>
• GOOGLE_WEB_CLIENT_SECRET=<your-google-web-client-secret>

Build

Install dependencies with:

yarn install
yarn run lerna bootstrap

Build the project with:

yarn run build

Test

yarn run test

Deploy

yarn run cdk bootstrap
yarn run cdk synth
yarn run deploy

Note: if you get an

Unable to resolve AWS account to use. It must be either configured when you define your CDK or through the environment

error when running yarn run cdk bootstrap, try to remove the [profile default] or [default] line from the beginning of your ~/.aws/config file and run it again.

Services

Back-end services are the following:

Service	Description
Auth	Authentication service.
API	API service.
Users	Provides User search.
Insertions	Provides CRUD operations on Insertions.
Search	Search service.
Conversations	Provides communication services between users.
Storage	Storage service.