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36 package gr.grnet.aquarium.computation
38 import gr.grnet.aquarium.util.shortClassNameOf
39 import gr.grnet.aquarium.util.date.{TimeHelpers, MutableDateCalc}
42 * Provides information about the billing month and related calculation utilities.
44 * @author Christos KK Loverdos <loverdos@gmail.com>
47 final class BillingMonthInfo(
54 * The billing month, in the range from 1 to 12.
56 final val month: Int) extends Ordered[BillingMonthInfo] {
58 final val (monthStartMillis, monthStopMillis) = {
59 val mdc = new MutableDateCalc(year, month, 1)
61 mdc.goStartOfThisMonth.getMillis,
62 mdc.goEndOfThisMonth.getMillis // no need to `copy` here, since we are discarding `mdc`
66 def previousMonth: BillingMonthInfo = {
67 BillingMonthInfo.fromDateCalc(new MutableDateCalc(year, month).goPreviousMonth)
70 def nextMonth: BillingMonthInfo = {
71 BillingMonthInfo.fromDateCalc(new MutableDateCalc(year, month).goNextMonth)
75 def compare(that: BillingMonthInfo) = {
76 val ds = this.monthStartMillis - that.monthStartMillis
77 if(ds < 0) -1 else if(ds == 0) 0 else 1
81 override def equals(any: Any) = any match {
82 case BillingMonthInfo(thatYear, thatMonth) ⇒
83 this.year == thatYear && this.month == thatMonth // normally everything else MUST be the same by construction
88 override def hashCode() = {
92 override def toString = "%s(%s-%02d-01)".format(shortClassNameOf(this), year, month)
94 def toShortDebugString = "%s-%02d-01".format(year, month)
97 object BillingMonthInfo {
98 def fromMillis(millis: Long): BillingMonthInfo = {
99 fromDateCalc(new MutableDateCalc(millis))
102 def fromDateCalc(mdc: MutableDateCalc): BillingMonthInfo = {
103 val year = mdc.getYear
104 val month = mdc.getMonthOfYear
106 new BillingMonthInfo(year, month)
109 def unapply(bmi: BillingMonthInfo): Option[(Int, Int)] = {
110 Some((bmi.year, bmi.month))