Phone-2-country application

The backend is a Spring Boot application which exposes the following API for fetching country codes based on the given phone number:

• GET /country-codes?phoneNumber=<phoneNumber> - determines the country/region codes for the given phone number based on calling codes fetched from the calling code Wiki page.

An insomnia import script is provided in Insomnia_2023-02-19.json, which can be used to test the API.

The graphical user interface is a React application located under the ui directory.

Building from the command line

Building the GUI

First, the GUI React application must be compiled by following these steps:

• install npm
• under the ui directory run:
  • npm i to install the required npm dependencies;
  • npm run build to compile the React code and copy the required static files under the Spring Boot backend application;
  • alternatively, can run npm run start to deploy the GUI on a Node server for development purposes with auto-reload enabled (works with a running Spring Boot backend).

Building the backend

After building the GUI, the backend must be packaged using Maven by following these steps:

• install maven
• under the root directory run:
  • mvn clean package to package the application as an executable jar file under the target directory. Will additionally run unit tests, which can be skipped by passing the -Dmaven.test.skip=true flag.

Running the application

After the application has been built, the packaged jar file can be run using the command java -jar phone-to-country-<version>.jar. Upon startup, by default, the APIs will be hosted on port 8080 and the GUI can be accessed at the root URL.

Testing the application

Unit tests can be manually executed using the command mvn test, which will also log a report on all successful and failed tests.