import java.util.Arrays;
import java.util.HashSet;
import java.util.Set;

//條件：
//一、7休1
//二、14休2
//三、7天內的工時合計不可超過48小時
//四、14天內的工時合計不可超過80小時，若超過時顯示加班幾個小時

public class WorkingDayUtil {
	
	public WorkingDayUtil(){
	}
	
	/**
	 * counting
	 * @param dayHoursArry
	 */
	public void count(final double[] dayHoursArry){

		for(int i = 0; i < dayHoursArry.length; i ++){

			final int startDate = i;
			
			//三、7天內的工時合計不可超過48小時
			final int weekEndDate = i+6; 
			final double[] newArry7days = Arrays.copyOfRange(dayHoursArry, startDate, weekEndDate);
			final double weekdayHours = getSum(newArry7days);
			System.out.println("day " + startDate + " to day " + weekEndDate + " hours = " + weekdayHours);
			chekcOffDays(newArry7days);
			if(weekdayHours > 48) {
				System.out.println(" ==> over " + (weekdayHours-48) );
			}
			
			//四、14天內的工時合計不可超過80小時，若超過時顯示加班幾個小時
			final int twoWeekEndDate = i+13;
			final double[] newArry14days = Arrays.copyOfRange(dayHoursArry, startDate, twoWeekEndDate);
			final double twoWeekdayHours = getSum(newArry14days);
			System.out.println("day " + startDate + " to day " + twoWeekEndDate + " hours = " + twoWeekdayHours);
			chekcOffDays(newArry14days);
			if(twoWeekdayHours > 80){ 
				System.out.println(" ==> over " + (twoWeekdayHours-80) );
			}
		}
	}
	
	/**
	 * get summary from all elements in array
	 * @param arry
	 * @return
	 */
	public double getSum(final double[] arry){
		
		double sum = 0;
		for(double d: arry) sum +=d; 
		return sum;
	}
	
	/**
	 * check the off days in day range
	 * @param array
	 */
	public static void chekcOffDays(final double[] array) { 
		//一、7休1
		if(array.length == 7 && !Arrays.asList(array).contains(0))
			System.out.println("7天未休1 ");			
		//二、14休2
		if(array.length == 14){
			if(Arrays.asList(array).contains(0)){
				Set dupes = new HashSet(); 
				for (double d : array) {
					if(d == 0 && !dupes.add(d))
						break;
					System.out.println("14天僅休1 ");		
				} 
			}else {
				System.out.println("14天未休2 ");	
			}
		} 
	}

	/********************** test **********************/
	public static void main(String[] args){
		/*
		 * {6.5,9,6.5,9.5,6.5,6.5,0,6.5,6.5,6.5,6,9.5,6.5,0,6.5,9,6.5,6,6.5,0,6.5,6.5,6.5,6.5,6.5,6.5,0,6.5,0,0,0}
		 */
		final double[] dayHoursArry = 
			{6.5,9,6.5,9.5,6.5,6.5,0,6.5,6.5,6.5,6,9.5,6.5,0,6.5,9,6.5,6,6.5,0,6.5,6.5,6.5,6.5,6.5,6.5,0,6.5,0,0,0};
		WorkingDayUtil wdu = new WorkingDayUtil();
		wdu.count(dayHoursArry);
	}
	
}