using YachtDice.Categories;
using YachtDice.Scoring;

namespace YachtDice.UI.Presentation
{
    public sealed class ScoreSummaryService : IScoreSummaryService
    {
        private const int UpperBonusThreshold = 63;
        private const int UpperBonusValue = 35;

        private readonly ScoringSystem _scoringSystem;
        private readonly CategoryCatalog _categoryCatalog;

        public ScoreSummaryService(ScoringSystem scoringSystem, CategoryCatalog categoryCatalog)
        {
            _scoringSystem = scoringSystem;
            _categoryCatalog = categoryCatalog;
        }

        public ScoreSummary Calculate()
        {
            var upperSum = CalculateUpperSum();
            var hasUpperBonus = upperSum >= UpperBonusThreshold;

            var total = _scoringSystem.TotalScore;
            if (hasUpperBonus)
                total += UpperBonusValue;

            return new ScoreSummary(total, upperSum, hasUpperBonus);
        }

        private int CalculateUpperSum()
        {
            var upperSum = 0;
            var allCategories = _categoryCatalog.All;

            for (var i = 0; i < allCategories.Count; i++)
            {
                var category = allCategories[i];
                if (!category.IsUpperSection)
                    continue;

                var categoryScore = _scoringSystem.GetCategoryScore(category);
                if (categoryScore >= 0)
                    upperSum += categoryScore;
            }

            return upperSum;
        }
    }
}