using SepCore.Definition;
using UnityEngine;
using UnityGameFramework.Runtime;

namespace SepCore.CustomUtility
{
    public static class RarityUtility
    {
        public static Rarity SelectRarityForLevel(int level)
        {
            int configId = level >= 1000 ? level : 1000 + level;
            LevelDropConfig dropConfig = GameEntry.Luban.Get<LevelDropConfig>(configId);
            return SelectRarity(dropConfig);
        }

        public static Rarity SelectRarity(LevelDropConfig dropConfig)
        {
            float total = dropConfig.WhiteWeight + dropConfig.GreenWeight + dropConfig.BlueWeight + dropConfig.PurpleWeight + dropConfig.RedWeight;
            if (total <= 0f)
            {
                Log.Error("LevelDropConfig '{0}' has invalid total weight '{1}'.", dropConfig.Id, total);
                return Rarity.White;
            }

            float roll = Random.Range(0f, total);
            if (roll < dropConfig.WhiteWeight) return Rarity.White;
            roll -= dropConfig.WhiteWeight;
            if (roll < dropConfig.GreenWeight) return Rarity.Green;
            roll -= dropConfig.GreenWeight;
            if (roll < dropConfig.BlueWeight) return Rarity.Blue;
            roll -= dropConfig.BlueWeight;
            if (roll < dropConfig.PurpleWeight) return Rarity.Purple;
            return Rarity.Red;
        }
    }
}