calculadora.CalculadoraDeHoras.java Source code

Introduction

Here is the source code for calculadora.CalculadoraDeHoras.java

Source

/*
 * Copyright 2010-2013 Geraldo Ferraz de Oliveira Filho
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *  
 */
package calculadora;

import org.joda.time.DateTime;

import org.joda.time.DateTimeConstants;

public class CalculadoraDeHoras {

    public Tempo quantidadeDeHoras(DateTime dataInicial, DateTime dataFinal, Janela janela) {

        long horasTrabalhadas = 0;

        int minutosDaHoraInicial = 0;
        int minutosDaHoraFinal = 0;

        if (forDiferente(dataInicial, dataFinal)) {
            minutosDaHoraInicial = tratarMinutosIniciais(dataInicial, janela);
            minutosDaHoraFinal = tratarMinutosFinais(dataFinal, janela);
        } else {
            minutosDaHoraInicial = dataFinal.getMinuteOfHour();
            minutosDaHoraFinal = dataInicial.getMinuteOfHour() * -1;
        }

        dataInicial = dataInicial.plusMinutes(minutosDaHoraInicial);

        while (forDiferente(dataInicial, dataFinal) && dataInicial.isBefore(dataFinal)) {

            if (janela.estaDentro(dataInicial)) {
                horasTrabalhadas++;
            }

            dataInicial = dataInicial.plusHours(1);

        }

        return criarTempo(horasTrabalhadas, minutosDaHoraInicial, minutosDaHoraFinal);
    }

    private boolean forDiferente(DateTime inicial, DateTime finall) {

        if (inicial.getHourOfDay() != finall.getHourOfDay() && inicial.getHourOfDay() < finall.getHourOfDay())
            return true;
        if (inicial.getDayOfMonth() != finall.getDayOfMonth())
            return true;
        if (inicial.getMonthOfYear() != finall.getMonthOfYear())
            return true;
        if (inicial.getYear() != finall.getYear())
            return true;
        return false;
    }

    private int tratarMinutosFinais(DateTime finall, Janela janela) {
        int minutosFinais = finall.getMinuteOfHour();
        if (!janela.estaDentro(finall)) {
            minutosFinais = 0;
        }
        return minutosFinais;
    }

    private int tratarMinutosIniciais(DateTime inicial, Janela janela) {
        int minutosIniciais = inicial.getMinuteOfHour();
        if (!janela.estaDentro(inicial)) {
            minutosIniciais = 0;
        } else {
            if (minutosIniciais > 0)
                minutosIniciais = 60 - minutosIniciais;
        }
        return minutosIniciais;
    }

    private Tempo criarTempo(long horas, int minutosDaHoraInicial, int minutosDaHoraFinal) {

        int dias = (int) (horas / 24);

        horas = (int) (horas % 24);
        horas += (int) (minutosDaHoraInicial + minutosDaHoraFinal) / 60;

        int minutos = (int) (minutosDaHoraInicial + minutosDaHoraFinal) % 60;

        return new Tempo(dias, horas, minutos);
    }
}