Recreating Java Example in Golang:

Goal:

Implement an API service for managing user data, including creation, getting data and validation of user records in Golang.

Technical Description

POST /save

• Requirements:

This endpoint stores the user data into the database, or updates when the "id" is given.  -Accepts JSON payloads for user data in these formats:

json

{   
    "first_name": "John",
    "last_name": "Payne",
    "email": "[email protected]",
    "age": 22
}  

or

json

{   
    "id": "user-20"
    "first_name": "John",
    "last_name": "Payne",
    "email": "[email protected]",
    "age": 22
} 

Fail request if it's missing any required fields; Ensure that email addresses are properly formatted; Validates that the user's age meets a minimum requirement; Fail request if a user with the same first and last name already exists.

GET /find/{id}

Returns user data by ID;

• Requirements:

http://localhost:8080/find/1234

Returns user data by ID; Returns a error if the user is not found.

Acceptance Criteria

AC#1 - Successfully Save a User:
GIVEN I am a user AND I am recording my register WHEN I make a POST request to /save AND all the user fields in the payload are valid THEN the user record is registered in the database AND a 200 Ok response is returned

AC#1 - Successfully Update a User:
GIVEN I am a user AND I am updating my register WHEN I make a POST request to /save AND all the user fields in the payload are valid, and I insert the ID that I want to update THEN the user record is updated in the database AND a 200 Ok response is returned

AC#2 - Fail to Save User with missing data:
GIVEN I am a User
AND I am recording my register WHEN I make a POST request to /save missing required fields THEN I receive a 400 bad request response code
AND an error message

AC#3 - Fail to Save User with invalid Data:
GIVEN I am a User
AND I am recording my register WHEN I make a POST request to /save with invalid user data THEN I receive a 400 bad request response code
AND an error message

AC#4 - Successfully Get a User:
GIVEN I am a user
AND I am finding a user by ID WHEN I make a GET request to /find/{id} AND the ID value is valid THEN the corresponding user data is returned
AND a 200 Ok response is returned

AC#5 - Fail to Get a User:
GIVEN I am a user
AND I am looking for a User by its ID WHEN I make a GET request to /find/{id} AND the ID value is invalid or doesn't exist in the database THEN I receive a 404 Not Found response code