Added logging for total amount of money added/removed from econ per material using VillagerUI

src/main/java/com/alttd/logging/LogInOut.java

@@ -0,0 +1,130 @@
+package com.alttd.logging;
+
+import com.alttd.VillagerUI;
+import com.alttd.config.Config;
+import com.alttd.util.Logger;
+import org.bukkit.scheduler.BukkitRunnable;
+
+import java.io.File;
+import java.io.FileNotFoundException;
+import java.io.FileWriter;
+import java.io.IOException;
+import java.time.LocalDate;
+import java.util.Calendar;
+import java.util.HashMap;
+import java.util.Scanner;
+
+public class LogInOut extends BukkitRunnable {
+
+    private HashMap<String, Double> map;
+    private int day;
+    private File file;
+
+    public LogInOut() {
+        day = Calendar.getInstance().get(Calendar.DAY_OF_YEAR);
+        file = new File(getPath());
+        if (file.exists())
+            map = loadFile(file);
+    }
+
+    public void log(String material, double cost) {
+        if (map.containsKey(material))
+            map.put(material, map.get(material) + cost);
+        else
+            map.put(material, cost);
+    }
+
+    private HashMap<String, Double> loadFile(File file) {
+        HashMap<String, Double> map = new HashMap<>();
+        try {
+            Scanner scanner = new Scanner(file);
+            while (scanner.hasNextLine()) {
+                String line = scanner.nextLine();
+                String[] split = line.split(": ");
+                if (split.length != 2) {
+                    Logger.warning("Invalid entry in money-used log: %", line);
+                    continue;
+                }
+                map.put(split[0], Double.parseDouble(split[1]));
+            }
+        } catch (FileNotFoundException e) {
+            e.printStackTrace();
+        }
+        return map;
+    }
+
+    @Override
+    public void run() {
+        if (this.isCancelled())
+            return;
+        int new_day = Calendar.getInstance().get(Calendar.DAY_OF_YEAR);
+        if (!file.canRead() || !file.canWrite()) {
+            Logger.warning("Unable to log money used due to incorrect file permissions");
+            return;
+        }
+        if (!file.exists()) {
+            boolean success = false;
+            try {
+                success = file.createNewFile();
+            } catch (IOException e) {
+                e.printStackTrace();
+            }
+            if (!success) {
+                Logger.warning("Unable to log money used because the file couldn't be created");
+                return;
+            }
+        }
+        try {
+            FileWriter fileWriter = new FileWriter(file.getPath(), false);
+            String text = getText();
+            if (text != null)
+                fileWriter.write(text);
+            else if (Config.DEBUG)
+                Logger.info("Didn't write to used money log as map was empty");
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+        if (new_day != day) {
+            day = new_day;
+            map.clear();
+            file = new File(getPath());
+        }
+    }
+
+    private String getText() {
+        StringBuilder stringBuilder = new StringBuilder();
+        for (String key : map.keySet())
+            stringBuilder.append(key).append(map.get(key)).append("\n");
+        return stringBuilder.length() > 2 ? stringBuilder.substring(0, stringBuilder.length() - 1) : null;
+    }
+
+    private String getPath() {
+        return VillagerUI.getInstance().getDataFolder() + File.separator + "logs" + File.separator + getDateStringYYYYMMDD() + "-money-used-log.txt";
+    }
+
+    private String getDateStringYYYYMMDD() {
+
+        int day = LocalDate.now().getDayOfMonth();
+        int month = LocalDate.now().getMonthValue();
+        int year = LocalDate.now().getYear();
+
+        String date = "";
+
+        date = date.concat(String.valueOf(year));
+        date = date.concat("-");
+
+        if (month < 10) {
+            date = date.concat("0");
+        }
+        date = date.concat(String.valueOf(month));
+        date = date.concat("-");
+
+        if (day < 10) {
+            date = date.concat("0");
+        }
+        date = date.concat(String.valueOf(day));
+
+        return date;
+
+    }
+}