librejack

commit 64b51752079aac2685e92f4b9565a1ddab4f128e
parent 5d2791b7bdccfad4456f2b4ed4cd92c3350d42a8
Author: Michael Neuper <73108749+michaelneuper@users.noreply.github.com>
Date:   Thu, 27 Apr 2023 13:44:53 +0200

Create Statistics.java

Diffstat:
A
src/model/Statistics.java
 | 
108
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

1 file changed, 108 insertions(+), 0 deletions(-)
diff --git a/src/model/Statistics.java b/src/model/Statistics.java
@@ -0,0 +1,108 @@
+package model;
+
+import java.io.FileReader;
+import java.io.FileWriter;
+import java.io.IOException;
+
+import com.opencsv.CSVReader;
+import com.opencsv.CSVWriter;
+import com.opencsv.exceptions.CsvValidationException;
+
+
+/**
+ * The Statistics class represents a set of statistics for a blackjack game.
+ * Statistics are stored in a CSV file with the following format:
+ *   - Column 1: number of wins
+ *   - Column 2: number of losses
+ *   - Column 3: number of pushes (ties)
+ * 
+ * The file is named 'statistics.csv' and is stored in the 'db/' directory.
+ * 
+ * @author michael
+ */
+public class Statistics {
+    private static final String CSV_FILE = "db/statistics.csv";
+    private static final String[] CSV_HEADERS = {"wins", "losses", "pushes"};
+
+    private int wins;
+    private int losses;
+    private int pushes;
+
+    public Statistics() {
+        this.wins = 0;
+        this.losses = 0;
+        this.pushes = 0;
+    }
+
+    public Statistics(int wins, int losses, int pushes) {
+        this.wins = wins;
+        this.losses = losses;
+        this.pushes = pushes;
+    }
+
+    public int getWins() {
+        return wins;
+    }
+
+    public int getLosses() {
+        return losses;
+    }
+
+    public int getPushes() {
+        return pushes;
+    }
+
+    public void setWins(int wins) {
+        this.wins = wins;
+    }
+
+    public void setLosses(int losses) {
+        this.losses = losses;
+    }
+
+    public void setPushes(int pushes) {
+        this.pushes = pushes;
+    }
+
+    public void incrementWins() {
+        this.wins++;
+        save();
+    }
+
+    public void incrementLosses() {
+        this.losses++;
+        save();
+    }
+
+    public void incrementPushes() {
+        this.pushes++;
+        save();
+    }
+
+    public void save() {
+        try (CSVWriter writer = new CSVWriter(new FileWriter(CSV_FILE))) {
+            writer.writeNext(CSV_HEADERS);
+            String[] data = {String.valueOf(wins), String.valueOf(losses), String.valueOf(pushes)};
+            writer.writeNext(data);
+        } catch (IOException e) {
+        }
+    }
+
+    public static Statistics load() throws CsvValidationException {
+        Statistics stats = new Statistics();
+        try (CSVReader reader = new CSVReader(new FileReader(CSV_FILE))) {
+            String[] headers = reader.readNext();
+            if (!headers[0].equals(CSV_HEADERS[0]) || !headers[1].equals(CSV_HEADERS[1]) || !headers[2].equals(CSV_HEADERS[2])) {
+                throw new IOException("Invalid CSV headers");
+            }
+            String[] data = reader.readNext();
+            if (data != null) {
+                stats.setWins(Integer.parseInt(data[0]));
+                stats.setLosses(Integer.parseInt(data[1]));
+                stats.setPushes(Integer.parseInt(data[2]));
+            }
+        } catch (IOException e) {
+        }
+        return stats;
+    }
+}