Solution for task 5 on Spring Boot https://t.me/try2py/197

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Kotlin Projects IouRestService
Overview

IouRestService (Spring Boot Application)

Решение задачи 5 https://t.me/try2py/197

Условие задачи: Четверо соседей по комнате имеют привычку занимать деньги друг у друга, но им трудно вспомнить, кто кому должен и сколько. Ваша задача состоит в том, чтобы реализовать простой > API (желательно следовать принципу REST, если знакомы с ним), который создаёт долговые расписки в виде POST-запросов и может предоставлять информацию о долгах с помощью GET-запросов.

REST API

Список пользователей

request:

GET http://localhost:8080/api/v1/user
request body: empty

output:

{
    "users": [
        {
            "id": 1,
            "name": "Andrey"
        },
        {
            "id": 2,
            "name": "Timofei"
        },
        {
            "id": 3,
            "name": "Jimmy"
        }
    ]
}

Список долговых расписок

request:

GET http://localhost:8080/api/v1/iou
request body: empty

output:

{
    "notes": [
        {
            "id": 1,
            "lender": {
                "id": 1,
                "name": "Andrey"
            },
            "borrower": {
                "id": 2,
                "name": "Timofei"
            },
            "amount": 100.0
        },
        {
            "id": 2,
            "lender": {
                "id": 1,
                "name": "Andrey"
            },
            "borrower": {
                "id": 2,
                "name": "Timofei"
            },
            "amount": 120.5
        },
        {
            "id": 3,
            "lender": {
                "id": 1,
                "name": "Andrey"
            },
            "borrower": {
                "id": 2,
                "name": "Timofei"
            },
            "amount": 13.5
        }
    ]
}

Список просуммированных долговых расписок

request

GET http://localhost:8080/api/v1/iou/summed
request body: empty

output:

{
    "notes": [
        {
            "lender": {
                "id": 1,
                "name": "Andrey"
            },
            "borrower": {
                "id": 2,
                "name": "Timofei"
            },
            "amount": 234.0
        }
    ]
}

Добавить пользователя

request:

POST http://localhost:8080/api/v1/user
request body: { "name": "Jimmy" }

output:

{
    "id": 3,
    "name": "Jimmy"
}

Добавить долговую расписку

request:

POST http://localhost:8080/api/v1/iou
request body: {
    "lender": 1,
    "borrower": 2,
    "amount": 13.50
}

output:

{
    "id": 3,
    "lender": {
        "id": 1,
        "name": "Andrey"
    },
    "borrower": {
        "id": 2,
        "name": "Timofei"
    },
    "amount": 13.5
}

Удалить пользователя

request:

DELETE http://localhost:8080/api/v1/user
request body: { "id": 3 }

output:

{
    "message": "success"
}

Удалить долговую расписку

request:

DELETE http://localhost:8080/api/v1/iou
request body: { "id": 3 }

output:

{
    "message": "success"
}
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