This is the backend application which enables users to perform CRUD operations on the notes. A note is a simple data structure which consists of a title, body and a few other fields. The app is built in the style of a RESTful API that enables devs to plug in multiple clients in their favorite language/framework/stack (browser, mobile, desktop etc..)

The app has no integration tests because I have a full time job.. LOL (might add them later though)

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Below you will see the typical flow of the app usage:

1. User registration
   • User registers with email and password
   • User email must be unique
2. User login
   • User must log in to get back a JSON Web Token (JWT)
   • JWT will be used for accessing protected routes
3. Display User notes
   • User can fetch all notes which he/she has ever created/updated
4. Create new User note
   • User can create a new note with specified title and body
5. Modify/Delete existing User notes
   • User can change the fields of the specific note, or delete it at all
6. Search/Sort User notes
   • User can apply exact/non-exact searching and ascending/desending sorting to his/her notes

Let's discuss step by step what each step does and how the HTTP Request/Response, API Endpoint and related things look like:

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1. User registration

   Endpoint	HTTP Method	Content Type	HTTP Success (Statuscode)	HTTP Failure (Statuscode)
   http://localhost:8080/api/user/signup	POST	application/json	User has been created (200)	User already exists (409)

   Request Body:

   {
     "name": "Nika",
     "email": "nika@gmail.com",
     "password": "my-strong-pass"
   }

---

2. User login

   Endpoint	HTTP Method	Content Type	HTTP Success (Statuscode)	HTTP Failure (Statuscode)
   http://localhost:8080/api/user/login	POST	application/json	{"token": "JWT"} (200)	Auth failed (401)

   Request Body:

   {
     "email": "nika@gmail.com",
     "password": "my-strong-pass"
   }

---

3. Display User notes

   Endpoint	HTTP Method	Content Type	HTTP Success (Statuscode)	HTTP Failure (Statuscode)
   http://localhost:8080/api/notes	GET	application/json	Notes in JSON format (200)	Auth failed (401)

   hint: use the real JWT returend upon the successful login

   Headers:

   Authorization: Bearer JWT
   

   Typical response:

    [
      {
          "id": 7159997665991673534,
          "title": "I love Scala",
          "body": "Scala rocks (most definitely)",
          "createdAt": "09-16-2022"
      },
      {
          "id": 5746959445480553359,
          "title": "I kinda like Java",
          "body": "Java rocks (kinda)",
          "createdAt": "09-16-2022"
      },
      {
          "id": 3672367746746389626,
          "title": "I completely hate Python",
          "body": "Python sucks (yep yep)",
          "createdAt": "09-16-2022"
      }
   ]

---

4. Create new Note

   Endpoint	HTTP Method	Content Type	HTTP Success (Statuscode)	HTTP Failure (Statuscode)
   http://localhost:8080/api/notes	POST	application/json	Note has been created (200)	Auth failed (401)

   hint: use the real JWT returend upon the successful login

   Headers:

   Authorization: Bearer JWT
   

   Request Body:

   {
       "title": "why should I learn ZIO?",
       "body": "cuz [insert 5 million intelligent words here]",
       "createdAt": "17-09-2022"
   }

---

5. Get Note by ID

   Endpoint	HTTP Method	Content Type	HTTP Success (Statuscode)	HTTP Failure (Statuscode)
   http://localhost:8080/api/notes/:id	GET	application/json	Note in JSON format (200)	Auth failed (401) / Note does not exist

   hint: use the real JWT returend upon the successful login

   Headers:

   Authorization: Bearer JWT
   

   Typical Response:

   {
       "id": 5321604607032827422,
       "title": "why should I learn ZIO?",
       "body": "cuz [insert 5 million intelligent words here]",
       "createdAt": "17-09-2022"
   }

---

6. Delete Note by ID

   Endpoint	HTTP Method	Content Type	HTTP Success (Statuscode)	HTTP Failure (Statuscode)
   http://localhost:8080/api/notes/:id	DELETE	application/json	Note has been deleted (200)	Auth failed (401) / Note does not exist

   hint: use the real JWT returend upon the successful login

   Headers:

   Authorization: Bearer JWT
   

---

7. Update Note fully

   Endpoint	HTTP Method	Content Type	HTTP Success (Statuscode)	HTTP Failure (Statuscode)
   http://localhost:8080/api/notes/:id	PUT	application/json	Note has been updated (200)	Auth failed (401) / Note does not exist

   hint: use the real JWT returend upon the successful login

   Headers:

   Authorization: Bearer JWT
   

   Request Body:

   {
      "id": 7043231874327471104,
      "title": "why should I learn ZIO?!?!?!?!?!",
      "body": "cuz [insert 5 million intelligent words here]",
      "createdAt": "17-09-2022"
   }

---

8. Search for a specific Note

   Endpoint	HTTP Method	Content Type	HTTP Success (Statuscode)	HTTP Failure (Statuscode)
   http://localhost:8080/api/notes/search?title={title}	GET	application/json	Note array in JSON format (200)	Auth failed (401)

   hint: use the real JWT returend upon the successful login

   Headers:

   Authorization: Bearer JWT
   

   Typical response:

    [
      {
          "id": 7159997665991673534,
          "title": "I love Scala",
          "body": "Scala rocks (most definitely)",
          "createdAt": "09-16-2022"
      },
      {
          "id": 5746959445480553359,
          "title": "I kinda like Java",
          "body": "Java rocks (kinda)",
          "createdAt": "09-16-2022"
      },
      {
          "id": 3672367746746389626,
          "title": "I completely hate Python",
          "body": "Python sucks (yep yep)",
          "createdAt": "09-16-2022"
      }
   ]

---

9. Sort notes by title

   Endpoint	HTTP Method	Content Type	HTTP Success (Statuscode)	HTTP Failure (Statuscode)
   http://localhost:8080/api/notes/sort?order=asc	GET	application/json	Note array in JSON format (200)	Auth failed (401)

   hint: use the real JWT returend upon the successful login

   Headers:

   Authorization: Bearer JWT
   

   Typical response:

   [
     {
       "id" : 3672367746746389626,
       "title" : "I completely hate Python",
       "body" : "Python sucks (yep yep)",
       "createdAt" : "09-16-2022"
     },
     {
       "id" : 5746959445480553359,
       "title" : "I kinda like Java",
       "body" : "Java rocks (kinda)",
       "createdAt" : "09-16-2022"
     },
     {
       "id" : 7159997665991673534,
       "title" : "I love Scala",
       "body" : "Scala rocks",
       "createdAt" : "09-16-2022"
     },
     {
       "id" : 7043231874327471104,
       "title" : "why should I learn ZIO?",
       "body" : "cuz [insert 5 million intelligent words here]",
       "createdAt" : "17-09-2022"
     }
   ]

---