Lottery Demo dApp Server

The server side consists of two applications:

Event listener that listens to the smart contract events and indexes them in a MySQL database
REST API that provides access to the data stored in the database, and also acts as a proxy to the CSPR.cloud APIs to make it possible for the Web Client to access CSPR.cloud without exposing the access key

Setup

Before building and running the server application, please update the configuration. Start with copying the config template:

cp .env.example .env

Next, update the following configuration values:

Change LOTTERY_CONTRACT_PACKAGE_HASH if you deployed your own contract. If you want to use the demo application contract, keep the default value.
Change CSPR_CLOUD_ACCESS_KEY to your CSPR.cloud access key from CSPR.build Console

The rest of the values should remain the same for the local development, unless you made corresponding changes in other places.

To install the dependencies, run:

npm install

To build the project for production, run:

npm run build

This command will create a build folder with optimized production-ready files.

To run and set up the database, execute:

docker compose -f ../infra/local/docker-compose.yaml --project-name lottery up -d mysql
npm run typeorm migration:run

To run the Event Listener, use:

npm run event-handler:dev

To run the API, use:

npm run api:dev