using ChillConnect;
namespace ChillConnect.Editor
{
    [System.Serializable]
    public class LevelDifficultyPreset
    {
        public int gridRows;
        public int gridCols;
        public int arrowCount;       // 目标箭头数
        public int minArrowCount;    // 最小接受箭头数
        public int minPathLength;    // 单箭头最小长度（格数）
        public int maxPathLength;    // 单箭头最大长度
        public int maxTurnCount;     // 最大折数
        public float turnProbability; // 每步转向概率
        public bool isPatternLevel;  // 是否图案关

        /// <summary>
        /// 根据关卡序号（从1开始）获取对应难度预设
        /// </summary>
        public static LevelDifficultyPreset GetPreset(int levelIndex)
        {
            LevelDifficultyPreset preset = new LevelDifficultyPreset();

            // ===== 第1-2关：起步适应 8x8 =====
            if (levelIndex <= 2)
            {
                preset.gridRows = 8;
                preset.gridCols = 8;
                preset.arrowCount = 7;
                preset.minArrowCount = 5;
                preset.minPathLength = 2;
                preset.maxPathLength = 4;
                preset.maxTurnCount = 0; // 纯直线
                preset.turnProbability = 0f;
                preset.isPatternLevel = false;
            }
            // ===== 第3关：难度突变 13x13 =====
            else if (levelIndex == 3)
            {
                preset.gridRows = 13;
                preset.gridCols = 13;
                preset.arrowCount = 14;
                preset.minArrowCount = 10;
                preset.minPathLength = 2;
                preset.maxPathLength = 5;
                preset.maxTurnCount = 0;
                preset.turnProbability = 0f;
                preset.isPatternLevel = false;
            }
            // ===== 第4关：第一个图案关 =====
            else if (levelIndex == 4)
            {
                preset.gridRows = 13;
                preset.gridCols = 13;
                preset.arrowCount = 12;
                preset.minArrowCount = 10;
                preset.minPathLength = 2;
                preset.maxPathLength = 6;
                preset.maxTurnCount = 0;
                preset.turnProbability = 0f;
                preset.isPatternLevel = true;
            }
            // ===== 第5-10关：快速跃升期 =====
            else if (levelIndex <= 10)
            {
                preset.gridRows = 13;
                preset.gridCols = 13;
                preset.arrowCount = 14 + (levelIndex - 5) * 1;
                preset.minArrowCount = preset.arrowCount - 3;
                preset.minPathLength = 2;
                preset.maxPathLength = 6;
                preset.maxTurnCount = 1;
                preset.turnProbability = 0.15f;
                preset.isPatternLevel = levelIndex == 8;
            }
            // ===== 第11-15关：进阶爬坡 =====
            else if (levelIndex <= 15)
            {
                preset.gridRows = 13;
                preset.gridCols = 13;
                preset.arrowCount = 20 + (levelIndex - 11);
                preset.minArrowCount = preset.arrowCount - 3;
                preset.minPathLength = 2;
                preset.maxPathLength = 7;
                preset.maxTurnCount = 1;
                preset.turnProbability = 0.2f;
                preset.isPatternLevel = levelIndex == 13;
            }
            // ===== 第15关突变：折数提升 =====
            else if (levelIndex <= 25)
            {
                preset.gridRows = 13;
                preset.gridCols = 13;
                preset.arrowCount = 22 + (levelIndex - 15);
                preset.minArrowCount = preset.arrowCount - 4;
                preset.minPathLength = 2;
                preset.maxPathLength = 7;
                preset.maxTurnCount = 2;
                preset.turnProbability = 0.25f;
                preset.isPatternLevel = levelIndex == 19;
            }
            // ===== 第26-35关 =====
            else if (levelIndex <= 35)
            {
                preset.gridRows = 14;
                preset.gridCols = 14;
                preset.arrowCount = 25 + (levelIndex - 26);
                preset.minArrowCount = preset.arrowCount - 4;
                preset.minPathLength = 2;
                preset.maxPathLength = 8;
                preset.maxTurnCount = 2;
                preset.turnProbability = 0.28f;
                preset.isPatternLevel = levelIndex == 26 || levelIndex == 33;
            }
            // ===== 第36-50关：高难起步 =====
            else if (levelIndex <= 50)
            {
                preset.gridRows = 14;
                preset.gridCols = 14;
                preset.arrowCount = 28 + (levelIndex - 36);
                preset.minArrowCount = preset.arrowCount - 5;
                preset.minPathLength = 2;
                preset.maxPathLength = 8;
                preset.maxTurnCount = 2;
                preset.turnProbability = 0.3f;
                preset.isPatternLevel = levelIndex == 41 || levelIndex == 49;
            }
            // ===== 第50关突变：15x15 =====
            else if (levelIndex <= 75)
            {
                preset.gridRows = 15;
                preset.gridCols = 15;
                preset.arrowCount = 30 + (levelIndex - 50) / 2;
                preset.minArrowCount = preset.arrowCount - 5;
                preset.minPathLength = 2;
                preset.maxPathLength = 9;
                preset.maxTurnCount = 3;
                preset.turnProbability = 0.32f;
                preset.isPatternLevel = levelIndex == 57 || levelIndex == 65 || levelIndex == 72;
            }
            // ===== 第76-100关：终极挑战 16x16 =====
            else
            {
                preset.gridRows = 16;
                preset.gridCols = 16;
                preset.arrowCount = 32 + (levelIndex - 75) / 3;
                preset.minArrowCount = preset.arrowCount - 6;
                preset.minPathLength = 2;
                preset.maxPathLength = 9;
                preset.maxTurnCount = 3;
                preset.turnProbability = 0.35f;
                preset.isPatternLevel = levelIndex == 80 || levelIndex == 87 || levelIndex == 93 || levelIndex == 100;
            }

            return preset;
        }
    }
}