otp_generator

An API for registering user and generating otp for them . The database used is postgres

Prerequisites

A postgres instance running on localhost on port 5432 with the users table.

You can use postgres docker image from Docker Hub with following steps:

docker pull postgres
docker run --name mypg -e POSTGRES_PASSWORD=postgres -p 5432:5432 -d postgres

And Create the following table before running the otp_generator service.

CREATE TABLE users (
    id SERIAL PRIMARY KEY,
    name VARCHAR(255),
    phone_number VARCHAR(20) UNIQUE,
    otp VARCHAR(6),
    otp_expiration_time TIMESTAMP
);

Note: If you have postgres running with different configuration, change the connection string "postgres://username:password@localhost/database_name?sslmode=disable" with necessary changes in InitDB() in db/db.go and sqlc.json. After changing sqlc.json, please run sqlc generate to generating the queries package automatically.

How to run

cd otp_generator
go run main.go

Requests

1. Add user details to DB
   Url : http://localhost:8080/api/users Method : POST
   body:

{
	"name": "Anu",
	"phone_number": "9539909563"
}

2. Generate OTP Url : http://localhost:8080/api/users/generateotp Method : POST
   body:

{
	"phone_number": "9539909563"
}

3. Verify OTP Url : http://localhost:8080/api/users/verifyotp Method : POST
   body:

{
	"otp": "1234",
	"phone_number": "9539909563"
}