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// EG/2020/4119 Praveenan J. #56

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// EG/2020/4119 Praveenan J. #56

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62 changes: 35 additions & 27 deletions TravelCostCalculator.java
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Original file line number Diff line number Diff line change
@@ -1,3 +1,6 @@
// EG/2020/4119
// Praveenan J.

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
Expand All @@ -6,50 +9,55 @@
import java.util.Map;

public class TravelCostCalculator {
static Map<String, Double> a = new HashMap<>();
static Map<String, Double> b = new HashMap<>();
static Map<String, Double> c = new HashMap<>();
static Map<String, Double> hotelRates = new HashMap<>();
static Map<String, Double> exchangeRates = new HashMap<>();
static Map<String, Double> flightCosts = new HashMap<>();

static void l1(String file) throws IOException {
// This is the function for Hotel Rates
static void loadHotelRates(String file) throws IOException {
BufferedReader reader = new BufferedReader(new FileReader(file));
String i;
while ((i = reader.readLine()) != null) {
String[] p = i.split(",");
a.put(p[0].toUpperCase(), Double.parseDouble(p[1]));
String line;
while ((line = reader.readLine()) != null) {
String[] parts = line.split(",");
hotelRates.put(parts[0].toUpperCase(), Double.parseDouble(parts[1]));

}
}

static void l2(String file) throws IOException {
// This is the function for Exchange Rates
static void loadExchangeRates(String file) throws IOException {
BufferedReader reader = new BufferedReader(new FileReader(file));
String i;
while ((i = reader.readLine()) != null) {
String[] p = i.split(",");
b.put(p[0].toUpperCase(), Double.parseDouble(p[1]));
String line;
while ((line = reader.readLine()) != null) {
String[] parts = line.split(",");
exchangeRates.put(parts[0].toUpperCase(), Double.parseDouble(parts[1]));
}
}

static void l3(String file) throws IOException {

// This is the function for Flight Costs
static void loadFlightCosts(String file) throws IOException {
BufferedReader reader = new BufferedReader(new FileReader(file));
String i;
while ((i = reader.readLine()) != null) {
String[] p = i.split(",");
c.put(p[0].toUpperCase(), Double.parseDouble(p[1]));
String line;
while ((line = reader.readLine()) != null) {
String[] parts = line.split(",");
flightCosts.put(parts[0].toUpperCase(), Double.parseDouble(parts[1]));
}
}

public static void main(String[] args) {
try {
l1("data/hotel_rates.csv");
l2("data/exchange_rates.csv");
l3("data/flight_costs.csv");
loadHotelRates("data/hotel_rates.csv");
LoadExchangeRates("data/exchange_rates.csv");
loadFlightCosts("data/flight_costs.csv");

BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));

System.out.print("Enter your destination: ");
String destination = reader.readLine().toUpperCase();

double flight_cost = c.getOrDefault(destination, 0.0);
double hotel_cost = a.getOrDefault(destination, 0.0);
double flight_cost = flightCosts.getOrDefault(destination, 0.0);
double hotel_cost = hotelRates.getOrDefault(destination, 0.0);

System.out.print("Enter your stay duration in days: ");
int stay_duration = Integer.parseInt(reader.readLine());
Expand All @@ -61,15 +69,15 @@ public static void main(String[] args) {
System.out.printf("Hotel cost (%d days): USD %.2f\n", stay_duration, hotel_cost);
System.out.printf("Total: USD %.2f\n", total_cost_usd);

String[] available_currencies = b.keySet().toArray(new String[0]);
String[] available_currencies = exchangeRates.keySet().toArray(new String[0]);
System.out.print("Select your currency for final price estimation(" + String.join(", ", available_currencies) + "): ");
String selected_currency = reader.readLine();

double final_price_local_currency = total_cost_usd * b.get(selected_currency);
double final_price_local_currency = total_cost_usd * exchangeRates.get(selected_currency);

System.out.printf("Total in %s: %.2f\n", selected_currency, final_price_local_currency);
} catch (IOException e) {
e.printStackTrace();
} catch (IOException exchange) {
exchange.printStackTrace();
}
}
}