Refactor výpočtu vyúčtování služební cesty.

closes #126

pom.xml

@@ -326,6 +326,13 @@
 	    	<artifactId>mail</artifactId>
 	    	<version>1.4.3</version>
     	</dependency>
+    	
+    	<!-- Joda time -->
+    	<dependency>
+    		<groupId>joda-time</groupId>
+			<artifactId>joda-time</artifactId>
+			<version>2.4</version>
+		</dependency>
 	
 		<!-- Test -->
 		<dependency>

src/main/java/info/bukova/isspst/services/tripbill/TripBillServiceImpl.java

@@ -12,12 +12,14 @@ import java.math.BigDecimal;
 import java.util.ArrayList;
 import java.util.Calendar;
 import java.util.Collections;
-import java.util.Date;
 import java.util.List;
-import java.util.concurrent.TimeUnit;
 
 import org.hibernate.LazyInitializationException;
 import org.hibernate.Query;
+import org.joda.time.DateTime;
+import org.joda.time.Days;
+import org.joda.time.Hours;
+import org.joda.time.LocalTime;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.security.access.prepost.PreAuthorize;
 import org.springframework.transaction.annotation.Transactional;
@@ -33,7 +35,9 @@ public class TripBillServiceImpl extends AbstractOwnedService<TripBill> implemen
 		TripBill bill = new TripBill();
 		
 		bill.setRequirement(requirement);
-		long daysCount = TimeUnit.DAYS.convert(requirement.getEndDate().getTime() - requirement.getTripDate().getTime(), TimeUnit.MILLISECONDS)  + 1;
+		
+		int daysCount = Days.daysBetween((new DateTime(requirement.getTripDate())).withTimeAtStartOfDay(), 
+				(new DateTime(requirement.getEndDate())).withTimeAtStartOfDay()).getDays() + 1;
 		
 		for (int i = 0 ; i < daysCount ; i++) {
 			TripBillItem item = new TripBillItem();
@@ -91,49 +95,35 @@ public class TripBillServiceImpl extends AbstractOwnedService<TripBill> implemen
 	}
 	
 	private void calculateItem(TripBillItem item) {
-		Calendar cal = Calendar.getInstance();
-		Date to = item.getToArrival();
-		
-		if (to == null) {
-			to = new Date();
-			cal.setTime(to);
-			cal.set(Calendar.HOUR_OF_DAY, 0);
-			cal.set(Calendar.MINUTE, 0);
+		LocalTime timeTo;
+		LocalTime timeBack;
+		boolean allDay = false;
+
+		if (item.getToArrival() == null) {
+			timeTo = (new LocalTime()).withHourOfDay(0).withMinuteOfHour(0);
 		} else {
-			cal.setTime(to);
+			timeTo = new LocalTime(item.getToArrival());
 		}
-
-		cal.set(Calendar.DAY_OF_MONTH, 1);
-		cal.set(Calendar.MONTH, 1);
-		cal.set(Calendar.YEAR, 2000);
-		
-		to.setTime(cal.getTimeInMillis());
-		
-		Date back = item.getBackDeparture();
 				
-		if (back == null) {
-			back = new Date(to.getTime());
-		}
-		
-		cal.setTime(back);
-		
-		if (back.equals(to)) {
-			cal.set(Calendar.HOUR_OF_DAY, 23);
-			cal.set(Calendar.MINUTE, 59);
+		if (item.getBackDeparture() == null) {
+			timeBack = (new LocalTime()).withHourOfDay(23).withMinuteOfHour(59);
+			allDay = true;
+		} else {
+			timeBack = new LocalTime(item.getBackDeparture());
 		}
 		
-		cal.set(Calendar.DAY_OF_MONTH, 1);
-		cal.set(Calendar.MONTH, 1);
-		cal.set(Calendar.YEAR, 2000);
-		back.setTime(cal.getTimeInMillis());
-		
-		if (to.getTime() > back.getTime()) {
+		if (timeTo.isAfter(timeBack)) {
 			item.setTotal(BigDecimal.ZERO);
 			return; 
 		}
 		
 		SettingsData settings = globalSettings.getSettings();
-		long hours = TimeUnit.HOURS.convert(back.getTime() - to.getTime(), TimeUnit.MILLISECONDS);
+		int hours = Hours.hoursBetween(timeTo, timeBack).getHours();
+		
+		if (allDay) {
+			++hours;
+		}
+		
 		int refundHour = 0;
 		List<Integer> refundHours = new ArrayList<Integer>(settings.getRefunds().keySet());
 		Collections.sort(refundHours);