package me.zobrist.tichucounter.domain

class Tichu {

    fun calculateOtherScore(score: Int?): Int? {
        if (score == null) {
            return null
        }
        if (!score.isMultipleOf5()) {
            return null
        }
        if (score.isMultipleOf100() && score != 0) {
            return 0
        }
        if (score in 101..125) {
            return 0 - (score % 100)
        }
        return 100 - (score % 100)
    }

    fun isValidRound(round: Round): Boolean {
        if (round.scoreA == null || round.scoreB == null) {
            return false
        }
        return (round.scoreA!!.isMultipleOf5()) && round.scoreB!!.isMultipleOf5() && (round.scoreA!! + round.scoreB!!).isMultipleOf100()
    }
}