REST API: Products in Range
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A REST API contains information about items in an inventory. Given the product category, minimum price, and maximum price parameters, the goal is to use the API to get the total number of products that belong to this category and have a price in the given range, inclusive. The API returns paginated data.
To access the inventory information, perform an HTTP GET request to:
https://jsonmock.hackerrank.com/api/inventory?category=<category>&page=<pageNumber>
where <category> is the category to get products for and <pageNumber> is an integer that denotes the page of the results to return.
For example, a GET request to
https://jsonmock.hackerrank.com/api/inventory?category=Accessories&page=2
returns data associated with category ‘Accessories’, and on the second page of the results.
Similarly, a GET request to
https://jsonmock.hackerrank.com/api/inventory?category=Tops&page=1
returns data associated with category ‘Tops’, and on the first page of the results.
The response to such a request is a JSON with the following 5 fields:
page: The current page of the results.per_page: The maximum number of items returned per page.total: The total number of items in the inventory.total_pages: The total number of pages with results.data: Either an empty array or an array of item records (Array of objects). Each item record has the following schema:barcode: a string that denotes the barcode of the itemitem: a string that denotes the name of the itemcategory: a string that denotes the category of the item queriedprice: a float that denotes the price of the itemdiscount: a float that denotes the discount on the itemavailable: an integer that denotes the number of units of the item available in the inventory (0 denotes unavailable, 1 denotes available)
Below is an example of an item record:
{
"barcode":"74000848",
"item":"Chemise",
"category":"Accessories",
"price":898.0,
"discount":13.1,
"available":1
}Given a string category, numerical minimum price minPrice, numerical maximum price maxPrice, return the total number of items that belong to the category with a price greater than or equal to minPrice and price less than or equal to maxPrice.
Function Description
Complete the function getProductsInRange in the editor below.
getProductsInRange has the following parameter(s):
string category: string denoting the category we want to query for
int minPrice: the lower price limit
int maxPrice: the higher price limit
Returns
int: the total number of items matching the given criteria
Constraints
The given category will always have data returned from the API.
NOTE: Please perform pagination in order to get all the results.
Input Format For Custom Testing
In the first line, there is a string, category.
In the second line, there is an integer, minPrice.
In the third line, there is an integer, maxPrice.
Sample Case 0
Sample Input For Custom Testing
STDIN Function ----- -------- Accessories → category = 'Accessories' 3000 → minPrice = 3000 4000 → maxPrice = 4000
Sample Output
131
Explanation
The function makes paginated calls and counts the Accessories with a price greater than or equal to 3000 and less than or equal to 4000. It then returns the total count which is printed by the stub code.
Sample Case 1
Sample Input For Custom Testing
Tops 0 1000
Sample Output
100
Explanation
The function make paginated calls and counts ‘Tops’ with a price greater than or equal to 0 and less than or equal to 1000. It then returns the total count which is printed by the stub code.
Solution (Python3):
#!/bin/python3
import math
import os
import random
import re
import sys
import requests
def getProductsInRange(category, minPrice, maxPrice):
totalCount = 0
currentPage = 1
while True:
url = f"https://jsonmock.hackerrank.com/api/inventory?category={category}&page={currentPage}"
response = requests.get(url).json()
total_pages = response['total_pages']
data = response['data']
for item in data:
item_category = item['category']
item_price = item['price']
if item_category == category and minPrice <= item_price <= maxPrice:
totalCount += 1
if currentPage == total_pages:
break
currentPage += 1
return totalCount
if __name__ == '__main__':
fptr = open(os.environ['OUTPUT_PATH'], 'w')
category = input()
minPrice = int(input().strip())
maxPrice = int(input().strip())
result = getProductsInRange(category, minPrice, maxPrice)
fptr.write(str(result) + '\n')
fptr.close()