Implemented getEmployeeShiftByWeek.

SchedulerApp/src/main/java/com/example/schedulerapp/Model.java

@@ -259,8 +259,33 @@ public class Model {
         return output;
     }
 
-    //todo
-    void getEmployeeShiftsByWeek(){
+    ArrayList<String> getEmployeeShiftsByWeek(int employeeID, String startOfWeek, String endOfWeek){
+        String[] startSplit = startOfWeek.split("-");
+        String[] endSplit = endOfWeek.split("-");
+        ArrayList<String> output = new ArrayList<>();
+        for(String shift: this.shifts){
+            if(!shift.equals("allShifts")){
+                String[] shiftSplit = shift.split("\\.");
+                String[] dateSplit = shiftSplit[1].split("-");
+                try {
+                    if(Integer.parseInt(shiftSplit[0]) == employeeID){
+                        if(Integer.parseInt(startSplit[0]) >= Integer.parseInt(dateSplit[0]) &&
+                                Integer.parseInt(startSplit[1]) >= Integer.parseInt(dateSplit[1]) &&
+                                Integer.parseInt(startSplit[2]) >= Integer.parseInt(dateSplit[2])){
+                            if(Integer.parseInt(endSplit[0]) >= Integer.parseInt(dateSplit[0]) &&
+                                    Integer.parseInt(endSplit[1]) >= Integer.parseInt(dateSplit[1]) &&
+                                    Integer.parseInt(endSplit[2]) >= Integer.parseInt(dateSplit[2])){
+                                output.add(shift);
+                            }
+
+                        }
+                    }
+                } catch (Exception e){
+                    System.out.println("Error: Parsing string to int");
+                }
+            }
+        }
+        return output;
     }
 
     void logOut() {