Refactored

app/src/main/java/com/kasilov/andrew/solidrobot/Battery.java

@@ -1,23 +1,73 @@
 package com.kasilov.andrew.solidrobot;
 
-public abstract class Battery {
+import android.os.AsyncTask;
 
-    int chargeLevel = 0;
+import com.kasilov.andrew.solidrobot.interfaces.IBatteryCharging;
+import com.kasilov.andrew.solidrobot.interfaces.IBatteryStatus;
+import com.kasilov.andrew.solidrobot.utils.LogUtil;
 
-    abstract void charge();
+import java.util.concurrent.TimeUnit;
 
-    protected void turnOnIndicator(){}
+abstract class Battery implements IBatteryCharging, IBatteryStatus {
 
-    protected void turnOffIndicator() {    }
+    protected IBatteryStatus iBatteryStatus;
+    protected BatteryCharging batteryCharging;
 
+    private boolean isChargeable = true;
+    private boolean charged = false;
 
-    public abstract void setCharged(boolean b);
+    Battery() {
+        this.batteryCharging = new BatteryCharging();
+    }
 
-    public abstract boolean isPlugged();
+    @Override
+    public void onBatteryCharged() {
+        this.setCharged(true);
+        this.setChargeable(false);
+        this.iBatteryStatus.onBatteryCharged();
+    }
 
-    public abstract boolean isCharged();
+    public abstract int getChargeLevel();
 
-    public abstract boolean isIndicatorTurnedOn();
+    public boolean isChargeable() {
+        return isChargeable;
+    }
 
-    public abstract void setPlugged(boolean b);
+    private void setChargeable(boolean chargeable) {
+        isChargeable = chargeable;
+    }
+
+    public boolean isCharged() {
+        return charged;
+    }
+
+    protected void setCharged(boolean charged) {
+        this.charged = charged;
+    }
+
+    abstract void notifyBatteriesChargingIsFinished(Integer chargeLevel);
+
+    protected class BatteryCharging extends AsyncTask<Integer, Integer, Integer> {
+
+        @Override
+        protected Integer doInBackground(Integer... integers) {
+            LogUtil.makeLog("Charging started");
+            int chargeLevel = 0;
+            while (chargeLevel < 100) {
+                chargeLevel += integers[0];
+                try {
+                    TimeUnit.MILLISECONDS.sleep(500);
+                } catch (InterruptedException e) {
+                    e.printStackTrace();
+                }
+            }
+            return chargeLevel;
+        }
+
+        @Override
+        protected void onPostExecute(Integer integer) {
+            Battery.this.notifyBatteriesChargingIsFinished(integer);
+            Battery.this.onBatteryCharged();
+        }
+    }
 }

app/src/main/java/com/kasilov/andrew/solidrobot/ChargingDevice.java

@@ -1,13 +1,4 @@
 package com.kasilov.andrew.solidrobot;
 
 public class ChargingDevice {
-    private boolean PLuggedIn;
-
-    public void setPLuggedIn(boolean PLuggedIn) {
-        this.PLuggedIn = PLuggedIn;
-    }
-
-    public boolean isPluggedIn() {
-        return PLuggedIn;
-    }
 }