Test api fetch

Author: Trymely

class.search.php

@@ -0,0 +1,157 @@
+<?php
+class Search{
+	public $hotelsByDistance = [];
+	public $hotelsByPrice = [];
+
+	const FETCH_HOTELS_URL = "https://s3.amazonaws.com/koisys-interviews/hotels.json";
+
+	public function fetchHotels(){
+		//Fetch array of hotels from API
+		$hotelsInJson = file_get_contents(Search::FETCH_HOTELS_URL);
+		$hotels = json_decode($hotelsInJson);
+		return $hotels->message;
+	}
+
+	public function getHotelsByDistance($latitude, $longitude){
+		//Fetch the array of hotels from API
+		$hotelList = $this->fetchHotels();
+
+		//Calculate the distance of the user from each hotel fetched
+		foreach ($hotelList as $key => $hotelData) {
+			
+			$hotelLatitude = null;
+			$hotelLongitude = null;
+
+			/*
+			Here we assume, that the fisrt coordinate is the latitude and the second longitude
+			some hotel data have varying length of arrays hence index of latitude and longitude changes with length*/
+			$latKey = count($hotelData)-3;
+			$longKey = count($hotelData)-2;
+
+			$hotelLatitude = (is_numeric($hotelData[$latKey])) ? $hotelData[$latKey] : null;
+			$hotelLongitude = (is_numeric($hotelData[$longKey])) ? $hotelData[$longKey] : null;
+			
+			
+		
+			if($hotelLatitude != null || $hotelLongitude != null){
+
+			   //convert to radians from degrees
+			   $firstLong = deg2rad($longitude); 
+	           $secondLong = deg2rad($hotelLongitude); 
+	           $firstLat = deg2rad($latitude); 
+	           $secondLat = deg2rad($hotelLatitude); 
+	              
+	           //Haversine Formula for calculating distance between coordinates
+	           $changeInLong = $secondLong - $firstLong; 
+	           $changeInLat = $secondLat - $firstLat; 
+	              
+	           $val = pow(sin($changeInLat/2),2)+cos($firstLat)*cos($secondLat)*pow(sin($changeInLong/2),2); 
+	              
+	           $res = 2 * asin(sqrt($val)); 
+	              
+	           $radius = 6372.795477598; 
+	           $distInKm = $res*$radius;
+	              
+	           
+	           $hotelsByDistance[$key] = $distInKm;
+       		}
+       		
+
+        }
+        //returns unsorted one-dimensional array with each distance from the user
+        return $hotelsByDistance;
+
+	}
+
+	public static function getHotelsByPrice(){
+		//fetch hotels from API
+		$search = new Search();
+		$hotelList = $search->fetchHotels();
+
+		//create an array to hold all the prices of the hotels only with their corresponding keys
+		foreach ($hotelList as $key => $hotelData) {
+			
+			$hotelsByPrice[$key] = $hotelData[count($hotelData)-1];
+		}
+		//returns unsorted one-dimensional array that contains the price for each hotel per night
+		return $hotelsByPrice;
+
+	}
+
+	public static function getNearbyHotels($latitude, $longitude, $orderBy, $limit){
+		//fetch hotels from API
+		$search = new Search();
+		$hotelList = $search->fetchHotels();
+		//get unsorted array of price
+		$listHotelsByPrice = $search->getHotelsByPrice();
+		//get unsorted array of distances
+		$listHotelsByDistance = $search->getHotelsByDistance($latitude, $longitude);
+
+		//$nearByHotels array holds final result
+		$nearByHotels = [];
+
+		if(isset($orderBy) && $orderBy == "pricepernight"){
+			//sort in ascending order
+			asort($listHotelsByPrice);
+
+			if(is_int($limit) && $limit > 0){
+
+				//$i is our counter for the limit passed to this function
+				$i = 0;
+				foreach ($listHotelsByPrice as $key => $value) {
+					//create new array to hold name, distance and price for each hotel sorted by price
+					$nearByHotels[$i]["name"] = $hotelList[$key][0]."'";
+					$nearByHotels[$i]["distance"] = $listHotelsByDistance[$key]." KM,";
+					$nearByHotels[$i]["price"] = $value." EUR";
+					$i++;
+					
+					if($i==$limit) {
+						break;
+					}
+					
+				}
+				return $nearByHotels;
+			}
+			return "Invalid limit";
+			
+		}
+		else{	
+				//sort distance in ascending order
+				asort($listHotelsByDistance);
+				if(is_int($limit) && $limit > 0){
+				$i = 0;
+				foreach ($listHotelsByDistance as $key => $value) {
+					//nearByHotels holds name, distance and price for each hotel sorted by price
+					$nearByHotels[$i]["name"] = $hotelList[$key][0].",";
+					$nearByHotels[$i]["distance"] = $value." KM,";
+					$nearByHotels[$i]["price"] = $listHotelsByPrice[$key]." EUR" ;
+					
+					$i++;
+					
+					if($i==$limit) {
+						break;
+					}
+					
+				}
+				return $nearByHotels;
+			}
+			return "Invalid limit";
+			
+			
+			return ($nearByHotels);
+		}
+        
+       
+	}
+
+
+
+	
+}
+
+
+
+
+
+
+?>

index.php

@@ -0,0 +1,11 @@
+<?php
+include_once "class.search.php";
+
+///Test Here
+$latitude = "23.3838" ;
+$longitude = "10.22" ;
+$orderBy = "";
+$limit = 3;
+
+var_dump(Search::getNearbyHotels($latitude, $longitude, $orderBy, $limit));
+?>