namespace SF.GameObjects
{
    public static class MineConstants
    {
        /* The levels in which you unlock each ore */
        public enum UnlockLevel
        {
            StartingLevel = 1,
            IronUnlockLevel = StartingLevel + 2 ^ 1,
            SilverUnlockLevel = IronUnlockLevel + 2 ^ 2,
            GoldUnlockLevel = SilverUnlockLevel + 2 ^ 3,
            UpperBoundUnlockLevel = int.MaxValue
        };

        /* First dimension is level, second demension is ore type */
        public static int[][] Counts = (int[][]) SetupOreCounts().Clone();

        /* Total number of levels for the mine */
        public static int TotalLevels = 20;

        public static OreType[] OreTypes = new[]{OreType.Copper, OreType.Iron, OreType.Silver, OreType.Gold};

        private static int[][] SetupOreCounts()
        {
            const int baseCopper = 3;
            var totalEnumCount = Enum.GetNames(typeof(OreType)).Length;
            var oreCounts = new int[TotalLevels][];

            for (int level = 0; level < TotalLevels; level++)
            {
                oreCounts[level] = new int[totalEnumCount];

                if (level == 0)
                {
                    oreCounts[0][(int) OreType.Copper] = baseCopper;
                    oreCounts[0][(int) OreType.Iron] = 0;
                    oreCounts[0][(int) OreType.Silver] = 0;
                    oreCounts[0][(int) OreType.Gold] = 0;
                }
                else
                {
                    foreach (var oreType in OreTypes)
                    {
                        if (level != 0)
                        {
                            oreCounts[level][(int) oreType] = oreCounts[level - 1][(int) oreType];
                        }
                    }
                }

                IncrementOreCountForLevel(oreCounts, level);
            }

            return oreCounts;
        }

        private static void IncrementOreCountForLevel(IReadOnlyList<int[]> oreCounts, int level)
        {
            if (level < (int) UnlockLevel.IronUnlockLevel)
            {
                oreCounts[level][(int) OreType.Copper] += 1;
            }
            else if (level >= (int) UnlockLevel.IronUnlockLevel && level < (int) UnlockLevel.SilverUnlockLevel)
            {
                oreCounts[level][(int) OreType.Iron] += 1;
            }
            else if (level >= (int) UnlockLevel.SilverUnlockLevel && level < (int) UnlockLevel.GoldUnlockLevel)
            {
                oreCounts[level][(int) OreType.Silver] += 1;
            }
            else if (level >= (int) UnlockLevel.GoldUnlockLevel)
            {
                oreCounts[level][(int) OreType.Gold] += 1;
            }
        }
    }
}