package preparazione_esame;

import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.HashMap;

public class Esame7 {

	public static void main(String[] args) {
		ArrayList<Ristorante> ristoranti = new ArrayList<>();
		try (BufferedReader br = new BufferedReader(new FileReader("src/preparazione_esame/esame7.txt"));
				PrintWriter pw1 = new PrintWriter(new FileWriter("esame7-1.txt"));
				PrintWriter pw2 = new PrintWriter(new FileWriter("esame7-2.txt"));
				PrintWriter pw3 = new PrintWriter(new FileWriter("esame7-3.txt"));
				PrintWriter pw4 = new PrintWriter(new FileWriter("esame7-4.txt"));
				PrintWriter pw5 = new PrintWriter(new FileWriter("esame7-5.txt"))) {
			/*
			 * Acquisizione input
			 */
			String linea = br.readLine();
			String nome;
			int stelle;
			String temp;
			double prezzoMedio;
			String[] coords;
			double[] coordinate = new double[2];
			while (linea != null) {
				if (!linea.isEmpty()) {
					nome = linea.trim();
					stelle = br.readLine().trim().length();
					temp = br.readLine().trim();
					prezzoMedio = Double.parseDouble(temp.substring(0, temp.length() - 4));
					coords = br.readLine().split(",");
					coordinate[0] = Double.parseDouble(coords[0].trim());
					coordinate[1] = Double.parseDouble(coords[1].trim());
					ristoranti.add(new Ristorante(nome, stelle, prezzoMedio, coordinate));
				}
				linea = br.readLine();
			}
			for (Ristorante r : ristoranti) {
				System.out.println(r.asString());
			}
			/*
			 * Elaborazione
			 */
			// punto 1
			for (Ristorante r : ristoranti) {
				if (r.getPrezzoMedio() < 40.0) {
					System.out.println("punto 1: " + r.asString());
					pw1.println(r.asString());
				}
			}
			// punto 2
			HashMap<Integer, ArrayList<Ristorante>> stelleRistorante = new HashMap<>();
			ArrayList<Ristorante> tempList;
			for (Ristorante r : ristoranti) {
				if (stelleRistorante.get(r.getStelle()) == null) {
					tempList = new ArrayList<>();
					tempList.add(r);
					stelleRistorante.put(r.getStelle(), tempList);
				} else {
					stelleRistorante.get(r.getStelle()).add(r);
				}
			}
			for (Integer i : stelleRistorante.keySet()) {
				for (Ristorante r : stelleRistorante.get(i)) {
					System.out.println(r.asString());
				}
			}
			double avg = 0;
			for (Integer i : stelleRistorante.keySet()) {
				System.out.print("Media ristoranti " + i + " stelle: ");
				pw2.print("Media ristoranti " + i + " stelle: ");
				for (Ristorante r : stelleRistorante.get(i)) {
					avg += r.getPrezzoMedio();
				}
				System.out.println(avg / stelleRistorante.get(i).size());
				pw2.println(avg / stelleRistorante.get(i).size());
			}
			// punto 3
			System.out.println("punto 3:");
			for (Ristorante r : ristoranti) {
				if (r.getStelle() >= 2 && distanza(r, new double[] { 40, 10 }) < 5) {
					System.out.println(r.asString());
					pw3.println(r.asString());
				}
			}
			// punto 4
			System.out.println("punto 4:");
			for (Ristorante r : ristoranti) {
				for (Ristorante anotherR : ristoranti) {
					if (!r.getNome().equals(anotherR.getNome()) && r.getStelle() == 5 && anotherR.getStelle() == 5 && distanza(r, anotherR) < 5) {
						System.out.println(r.asString());
						pw4.println(r.asString());
					}
				}
			}
			// punto 5
			Ristorante[] ristoArray = ristoranti.toArray(new Ristorante[] {});
			Ristorante ristoTemp;
			for (int i = 0; i < ristoArray.length - 1; i++) {
				if (ristoArray[i].getPrezzoMedio() < ristoArray[i + 1].getPrezzoMedio()) {
					ristoTemp = ristoArray[i];
					ristoArray[i] = ristoArray[i + 1];
					ristoArray[i + 1] = ristoTemp;
				}
			}
			System.out.println("punto 5:");
			for (Ristorante ristorante : ristoArray) {
				System.out.println(ristorante.asString());
				pw5.println(ristorante.asString());
			}
		} catch (FileNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}

	private static double distanza(Ristorante r, Ristorante anotherR) {
		return Math.sqrt(Math.pow(r.getCoordinate()[0] - anotherR.getCoordinate()[0], 2) + Math.pow(r.getCoordinate()[1] - anotherR.getCoordinate()[1], 2));
	}

	private static double distanza(Ristorante r, double[] ds) {
		return Math.sqrt(Math.pow(r.getCoordinate()[0] - ds[0], 2) + Math.pow(r.getCoordinate()[1] - ds[1], 2));
	}

}