dijkstra-backend

Dijkstra is an app thas uses Dijkstra algorithm to display the shortest path between different cities in Belgium.

Deployed backend: https://dijkstra-backend.herokuapp.com/

API Documentation

---

Values required in bold.

COUNTRIES countries

field	data type	metadata
id	unsigned integer	primary key, auto-increments, generated by database
name	string

Get countries list

GET /api/countries/:country_id

Response

A json object with a list of cities in the selected country name and id and country_id.

[
  {
    "id": 1,
    "name": "bruges",
    "country_id": 1
  },
  {
    "id": 2,
    "name": "antwerp",
    "country_id": 1
  },
  {
    "id": 3,
    "name": "ghent",
    "country_id": 1
  },
]

CITIES cities

field	data type	metadata
id	unsigned integer	primary key, auto-increments, generated by database
name	string
country_id	unsigned integer	foreign key referencing countries.id

Get cities list

GET /api/cities

Response

A json object with id, name and country_id.

{
  "id": 1,
  "name": 'bruges',
  "country_id": 1
}

ROADS roads

field	data type	metadata
id	unsigned integer	primary key, auto-increments, generated by database
start_city_id	string	required
end_city_id	string	required
distance	unsigned integer

Get roads list

GET /api/roads

Response

A json object with id, start_city_id, 'end_city_idanddistance`.

{
  "id": 1,
  "start_city_id": 1,
  "end_city_id": 3,
  "distance": 50
}

Shortest Path cities

Get the shortest path between two cities and the total distance

GET /api/path

Request

Add the start_city_id and end_city_id as query strings to the url.

/api/path?start_city_id=2?end_city_id=9

Response

A json object composed of the path correctly ordered and the total distance.

{
  "path": [
    {
      "id": 2,
      "name": "antwerp"
    },
    {
      "id": 4,
      "name": "mechelen"
    },
    {
      "id": 5,
      "name": "brussels"
    },
    {
      "id": 8,
      "name": "liege"
    },
    {
      "id": 7,
      "name": "namur"
    },
    {
      "id": 9,
      "name": "arlon"
    }
  ],
  "distance": 337
}