package UE22_200525_MatheServer;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.net.Socket;

public class MatheClient extends Thread {
    Socket client;
    private int anzCals = 10;
    private int level = 1;

    public MatheClient(Socket s) {
        client = s;
    }

    public static int randomInRange(int min, int max) {
        return (int) (Math.random() * (max - min)) + min;
    }

    @Override
    public void run() {
        try (BufferedReader br = new BufferedReader(new InputStreamReader(client.getInputStream())); BufferedWriter wr = new BufferedWriter(new OutputStreamWriter(client.getOutputStream()))) {
            while (true) {
                wr.write("Willkommen beim Mathe-Quiz\n\rWie heftig hättest du es gerne?");
                wr.flush();
                while (true) {
                    int level;
                    wr.write("\n\rBitte gibt eine Zahl zwischen 1 und 3 ein. (Leer für 1): ");
                    wr.flush();
                    try {
                        String input = br.readLine();
                        if (input == null || input.trim().isEmpty()) break;
                        level = Integer.parseInt(input);
                    } catch (Exception _) {
                        continue;
                    }
                    if (level < 1 || level > 3) continue;
                    this.level = level;
                    break;
                }
                while (true) {
                    int anz;
                    wr.write("\n\rWie viele Fragen meochtest du loesen (1 - 999) (Leer für 10): ");
                    wr.flush();
                    try {
                        String input = br.readLine();
                        if (input == null || input.trim().isEmpty()) break;
                        anz = Integer.parseInt(input);
                    } catch (Exception _) {
                        continue;
                    }
                    if (anz < 1 || anz > 999) continue;
                    this.anzCals = anz;
                    break;
                }
                for (int i = 1; i <= anzCals; i++) {
                    int type = randomInRange(1, 4), solution, a, b;
                    String operator;
                    switch (level) {
                        case 1 -> {
                            a = randomInRange(1, 10);
                            b = randomInRange(1, 10);
                        }
                        case 2 -> {
                            a = randomInRange(-100, 100);
                            b = randomInRange(-100, 100);
                        }
                        case 3 -> {
                            a = randomInRange(-10_000, 10_000);
                            b = randomInRange(-10_000, 10_000);
                        }
                        default -> throw new IllegalStateException("Unexpected value: " + level);
                    }
                    switch (type) {
                        case 1 -> {
                            operator = "+";
                            solution = a + b;
                        }
                        case 2 -> {
                            operator = "-";
                            solution = a - b;
                        }
                        case 3 -> {
                            operator = "*";
                            solution = a * b;
                        }
                        case 4 -> {
                            operator = "/";
                            solution = a / (b == 0 ? 1 : b);
                        }
                        default -> throw new IllegalStateException("Unexpected value: " + type);
                    }
                    String question = "(Level " + level + ") Frage " + i + ": " + a + " " + operator + " " + b + " = ";
                    wr.write(question);
                    wr.flush();
                    while (true) {
                        String message = "\n\rFalsch :( .. versuche es noch einmal\n\n\r" + question;
                        try {
                            String input = br.readLine();
                            if (input == null || input.trim().isEmpty() || Integer.parseInt(input) != solution) {
                                wr.write(message);
                                wr.flush();
                                continue;
                            }
                        } catch (Exception _) {
                            wr.write(message);
                            wr.flush();
                            continue;
                        }
                        wr.write("\n\rrichtig :)\n\n\r");
                        wr.flush();
                        break;
                    }
                }
                wr.write("\n\n\n\rHerzlichen Glückwunsch du hast es geschafft!!\n");
                wr.flush();
                boolean end = true;
                while (true) {
                    wr.write("\n\rMoechtest du noch einmal spielen? [y/N]: ");
                    wr.flush();
                    String input = br.readLine();
                    if (input == null || input.trim().isEmpty() || input.trim().equalsIgnoreCase("n")) break;
                    if (input.trim().equalsIgnoreCase("y")) {
                        end = false;
                        break;
                    }
                }
                if (end) break;
            }
        } catch (Exception _) {
        }
    }
}