using SepCore.Definition;

namespace SepCore.CustomUtility
{
    public static class WeaponUtility
    {
        public const int IdMultiplier = 1000;

        /// <summary>
        /// 根据武器种类与品质换算武器配置编号。
        /// </summary>
        public static int GetWeaponId(WeaponType weaponType, Rarity rarity = Rarity.White)
        {
            return (int)weaponType * IdMultiplier + (int)rarity;
        }

        /// <summary>
        /// 根据武器编号反推武器种类。
        /// </summary>
        public static WeaponType GetWeaponType(int weaponId)
        {
            return (WeaponType)(weaponId / IdMultiplier);
        }

        /// <summary>
        /// 根据武器编号反推武器品质。
        /// </summary>
        public static Rarity GetRarity(int weaponId)
        {
            return (Rarity)(weaponId % IdMultiplier);
        }

        /// <summary>
        /// 获取指定种类与品质的武器配置。
        /// </summary>
        public static WeaponConfig GetWeaponConfig(WeaponType weaponType, Rarity rarity = Rarity.White)
        {
            return GameEntry.Luban.Get<WeaponConfig>(GetWeaponId(weaponType, rarity));
        }

        /// <summary>
        /// 获取指定武器编号的武器配置。
        /// </summary>
        public static WeaponConfig GetWeaponConfig(int weaponId)
        {
            return GameEntry.Luban.Get<WeaponConfig>(weaponId);
        }

        /// <summary>
        /// 获取同种武器的下一阶品质配置（用于武器合成升阶）。
        /// 若已达到最高品质（Red）则返回 false。
        /// </summary>
        public static bool TryGetNextTierConfig(WeaponConfig current, out WeaponConfig nextTierConfig)
        {
            if (current.Rarity >= Rarity.Red)
            {
                nextTierConfig = null;
                return false;
            }

            int nextId = (int)current.WeaponType * IdMultiplier + ((int)current.Rarity + 1);
            nextTierConfig = GameEntry.Luban.Get<WeaponConfig>(nextId);
            return nextTierConfig != null;
        }

        /// <summary>
        /// 计算同种武器的下一阶品质武器编号。
        /// 若已达到最高品质（Red）则返回 false。
        /// </summary>
        public static bool TryGetNextTierWeaponId(int currentWeaponId, out int nextWeaponId)
        {
            Rarity rarity = GetRarity(currentWeaponId);
            if (rarity >= Rarity.Red)
            {
                nextWeaponId = 0;
                return false;
            }

            nextWeaponId = currentWeaponId + 1;
            return true;
        }
    }
}