Coding Exercise: Write a Flask / FastAPI / Django Web API that simulates the behavior of an audio file server while using a MongoDB / SQL database.

ParticipantField(models.Field)

Created Custom Model Field satisfying Podcast Participants requirement.
As recommended for podcasts there needs a list field which accepts 10 elements where each element has max size 100.

participents = ParticipantField()

Other Model field achievements:

Datetime, cannot be in the past
string, cannot be larger than 100 characters
Duration in number of seconds – (mandatory, integer, positive)
Participants field set to optional and others to mandatory fields

Following requirements are satisfied.

Create only four endpoints (make them generic and usable for all audio file types, do not create four endpoints for each of them) Use SOLID principles. The classes should be written in such a way that they are easy to test. Use design patterns where you find it suitable

I had performed many tests with Postman also i have written few tests in python program available at https://github.com/ultimus11/Filed-Test/blob/main/filedTest/test.py

I had used some URL manipulations Hence I had tested some URL injection payloads with the help of Burp Suit for purposes like Redirections and othe cyber attacks. Endpoints in urls.py looks like

urlpatterns = [
    url('GET/', GETAPIView.as_view()),
    url('CREATE/', CREATEAPIView.as_view()),
    url('UPDATE/', UPDATEAPIView.as_view()),
    url('DELETE/', DELETEAPIView.as_view()),
]

The list view and the detailed list view are both handled by GET/ endpoint. All endpoints strictly follow given design and routs recommendations for API. The response of these methods should be one of the following:

• Action is successful: 200 OK
• The request is invalid: 400 bad request
• Any error: 500 internal server error

• Django Web API
• MongoDB

• Python 3.6.5 (Others versions will also work I tested it on 3.6.5)
• Django: pip install Django
• djongo: pip install djongo
• django rest framework: pip install djangorestframework
• MongoDB (Compass optional)
• Will power & dedication to solve the erors (optional: because its easy)

• clone this repo
• open cmd/terminal in filedTest directory
• open mongoDB compass and connect
• create database named filedDb
• run in terminal py manage.py makemigrations
• run in terminal py manage.py migrate
• run in terminal py manage.py createsuperuser
• give required credentials & set strong password for superuser
• run in terminal py manage.py runserver
• Access browsable api via localhost
• Test api via python requests or Postman

Check on http://127.0.0.1:8000/admin/ for admin privileges

Objects:

-song

{
    "id": 2,
    "audioFileType": "song",
    "NameOfTheSong": "Uptown Funk",
    "DurationInNoOfSeconds": 65,
    "UploadedTime": "2021-05-16T15:32:01.772000Z"
}

audiobook

{
    "id": 2,
    "audioFileType": "audiobook",
    "TitleOfTheAudiobook": "Hacking planet needs to know11",
    "AutherOfTheTitle": "Sahil Panindre",
    "Narrator": "sahil",
    "DurationInNoOfSeconds": 10,
    "UploadedTime": "2021-05-16T00:00:00.431000Z"
}

podcast

{
    "id": 2,
    "audioFileType": "podcast",
    "NameOfThePodcast": "life talk",
    "DurationInNoOfSeconds": 200,
    "UploadedTime": "2021-05-15T23:02:54.069000Z",
    "Host": "sandeep maheshwari",
    "participents": "sahil1,sahi2,sahil3,sahil4,sahil5,sahil6,sahil7,sahil8,sahil9,sahil10"
}

BASE_URL='http://127.0.0.1:8000/testapp/' ENDPOINT='GET/'

• The route <audioFileType>/<audioFileID> will return the specific audio file
• The route <audioFileType> will return all the audio files of that type Example: Audio file type can be one of the following:

1. song

2. podcast

3. audiobook

   To get list of all podcasts use URL : http://127.0.0.1:8000/testapp/GET/podcast/

   To get detailed view of podcast use URL : http://127.0.0.1:8000/testapp/GET/podcast/2

   Note: No need to pass json data, integer is supported.

   Same goes for other filetypes.

   Output: http://127.0.0.1:8000/testapp/GET/podcast/

    [
    {
        "id": 1,
        "audioFileType": "podcast",
        "NameOfThePodcast": "Mann ki baat",
        "DurationInNoOfSeconds": 650,
        "UploadedTime": "2021-05-15T23:00:31.751000Z",
        "Host": "PM Modi",
        "participents": "sahil,viren,aditya"
    },
    {
        "id": 2,
        "audioFileType": "podcast",
        "NameOfThePodcast": "life talk",
        "DurationInNoOfSeconds": 200,
        "UploadedTime": "2021-05-15T23:02:54.069000Z",
        "Host": "sandeep maheshwari",
        "participents": "sahil1,sahi2,sahil3,sahil4,sahil5,sahil6,sahil7,sahil8,sahil9,sahil10"
    },
    {
        "id": 4,
        "audioFileType": "podcast",
        "NameOfThePodcast": "to the moon",
        "DurationInNoOfSeconds": 630,
        "UploadedTime": "2021-05-16T00:06:00.125000Z",
        "Host": "elon musk",
        "participents": ""
    }
]

with http://127.0.0.1:8000/testapp/GET/podcast/2

    HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept
{
    "id": 2,
    "audioFileType": "podcast",
    "NameOfThePodcast": "life talk",
    "DurationInNoOfSeconds": 200,
    "UploadedTime": "2021-05-15T23:02:54.069000Z",
    "Host": "sandeep maheshwari",
    "participents": "sahil1,sahi2,sahil3,sahil4,sahil5,sahil6,sahil7,sahil8,sahil9,sahil10"
}

BASE_URL='http://127.0.0.1:8000/testapp/'

ENDPOINT='CREATE/'

The request will have objects releted to filetypes (Already mentioned)

BASE_URL='http://127.0.0.1:8000/testapp/'

ENDPOINT='UPDATE/'

The request will have objects releted to filetypes (Already mentioned)

• The route be in the format: <audioFileType>/<audioFileID>

BASE_URL='http://127.0.0.1:8000/testapp/'

ENDPOINT='DELETE/'

• The route will be in the format: <audioFileType>/<audioFileID>