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AlertaDoTesouro is a project elaborated with the intent of automatically monitoring Brazilian government bond and alerting users about them according to their preferences of rates. Tools such as Node.js, Express, PostgreSQL, Docker, Redis, linting and debugging tools, mail delivery systems, among others, were employed to build this system. Furthermore, this project was also presented as required academic work for the Integrated Project classes during the 2022/1 semester.

The application allows users to set one value per treasury bond, so they can get notified by email whenever its rate goes above or below that value.

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This project was developed using the following tools:

• Node.js
• Express
• React.js
• PostgreSQL
• Docker with Compose V2

Clone the repository and enter it with your terminal.

Rename or copy the .env.test.example file to .env.test in /server and change values whenever needed. To run the development servers, run the following command:

docker compose --profile dev up

All files exclusively related to the back-end server are located in the folder /server.

The back-end REST API is fully functional and was made with Express. Multiple endpoints have been defined and they can be explored extensively by referring to the .insomnia.json file, which can be imported into Insomnia itself or possibly other HTTP clients.

Deploy the test database with the following command:

docker compose --profile dev --profile test up

When you need to wipe the volumes, just docker compose --profile dev --profile test down --volumes

Once running, you can unit test and integration test the back-end server by running the following command:

docker exec -t alertadotesouro-server-dev-1 yarn test

A typical request would be a simple GET request to the /treasurybond endpoint. Response example:

[
  {
    "id": "233b7ab7-63dd-4a06-ab21-8fd2562069e5",
    "code": 162,
    "name": "Tesouro Prefixado com Juros Semestrais 2029",
    "expirationDate": "2029-01-01T03:00:00.000Z",
    "minimumInvestmentAmount": 0,
    "investmentUnitaryValue": 0,
    "semianualInterestIndex": true,
    "annualInvestmentRate": 0,
    "annualRedRate": 7.13,
    "minimumRedValue": 11.92,
    "ISIN": "BRSTNCNTF1Q6",
    "indexedTo": {
      "code": 19,
      "name": 19
    },
    "lastDateOfNegotiation": "2020-02-10T03:00:00.000Z",
    "texts": {
      "investmentSubtitle": "É mais interessante para quem precisa dos seus rendimentos para complementar sua renda, pois paga juros a cada semestre (cupons de juros). Em caso de resgate antecipado, o Tesouro Nacional garante sua recompra pelo seu valor de mercado.",
      "features": 162,
      "recommendedTo": "Indicado para aqueles que querem realizar investimentos de longo prazo."
    },
    "created_at": "2020-08-23T22:46:56.763Z",
    "updated_at": "2020-08-23T22:46:56.763Z"
  },
  [...]
]

You can build the documentation with typedoc. It is recommended that you install typedoc with tools like npx.

From the /server directory, run typedoc --out docs. The documentation will then be available at docs/.

Running it with dev profile (see below) will automatically start the front-end server and you will have access to debugging logs on the browser console.

Clone the repository and enter the folder with your terminal. To start the services with Compose v2, run the following command while on the project root directory:

docker compose up # TODO, only development is currently supported

You can append -d or --detach to run the services in detached mode.

Rename or copy the .env.example file to .env in both the /server and /web directories and change values whenever needed.

• The default server port is 3333. You might want to change this if this port is already in use wherever you are running the server on.
• You can and should change JWT_SECRET to another string. It is used by the hashing algorithm to generate hashed passwords.
• The project uses Mailtrap for development purposes. You can of course use your preferred mail service by replacing the appropriate values in the .env file.

• The default port is 3000. You might want to change this if this port is already in use wherever you are running the server on.