using System.Collections.Generic;
using System.IO;
using UnityEngine; // 假设在Unity环境中使用Debug.LogError

namespace HitFeedback
{
    public class Config
    {
        public KeyCode hotKey = KeyCode.F8;
        public Dictionary<string, float> probability = new Dictionary<string, float>();

        public void LoadConfig(string filename)
        {
            if (!File.Exists(filename))
            {
                Debug.LogError($"Config file not found: {filename}");
                return; // 如果文件不存在，就没必要继续了
            }

            // 清空旧的概率数据，确保每次加载都是从新开始
            probability.Clear();

            try
            {
                using (var sr = new StreamReader(filename))
                {
                    string line;
                    var lineNumber = 0; // 用于错误报告
                    while ((line = sr.ReadLine()) != null)
                    {
                        lineNumber++;
                        line = line.Trim(); // 移除行首尾的空白字符

                        // 忽略空行和注释行
                        if (string.IsNullOrEmpty(line) || line.StartsWith(";") || line.StartsWith("#"))
                        {
                            continue;
                        }

                        // 查找等号
                        var separatorIndex = line.IndexOf('=');
                        if (separatorIndex == -1)
                        {
                            Debug.LogWarning($"Skipping malformed line in config file '{filename}' at line {lineNumber}: No '=' found. Line: '{line}'");
                            continue;
                        }

                        var key = line.Substring(0, separatorIndex).Trim();
                        var valueStr = line.Substring(separatorIndex + 1).Trim();

                        // 解析 hotKey
                        if (key.Equals("hotKey", System.StringComparison.OrdinalIgnoreCase))
                        {
                            try
                            {
                                hotKey = (KeyCode)System.Enum.Parse(typeof(KeyCode), valueStr, true);
                            }
                            catch (System.ArgumentException)
                            {
                                Debug.LogError($"Invalid KeyCode '{valueStr}' in config file '{filename}' at line {lineNumber}. Using default F8.");
                                hotKey = KeyCode.F8; // 设置为默认值或保持不变
                            }
                        }
                        // 解析 probability 字典项
                        else
                        {
                            if (float.TryParse(valueStr, out var probValue))
                            {
                                probability[key] = probValue;
                            }
                            else
                            {
                                Debug.LogWarning($"Invalid float value '{valueStr}' for key '{key}' in config file '{filename}' at line {lineNumber}. Skipping entry.");
                            }
                        }
                    }
                }
            }
            catch (System.Exception ex)
            {
                Debug.LogError($"Error reading config file '{filename}': {ex.Message}");
            }
        }
        /// <summary>
        /// 将当前配置存储到指定INI文件。
        /// </summary>
        /// <param name="filename">要保存的INI文件的路径。</param>
        public void SaveConfig(string filename)
        {
            try
            {
                // 确保目录存在
                var directory = Path.GetDirectoryName(filename);
                if (!string.IsNullOrEmpty(directory) && !Directory.Exists(directory))
                {
                    Directory.CreateDirectory(directory);
                }
                using (var sw = new StreamWriter(filename))
                {
                    sw.WriteLine("; HitFeedback Configuration File");
                    sw.WriteLine("; Generated by HitFeedback.Config class");
                    sw.WriteLine(); // 空行
                    sw.WriteLine("[General]");
                    sw.WriteLine($"hotKey = {hotKey.ToString()}");
                    sw.WriteLine();
                    if (probability.Count > 0)
                    {
                        sw.WriteLine("[Probabilities]");
                        foreach (var kvp in probability)
                        {
                            // 使用 InvariantCulture 确保浮点数的格式在不同区域设置下都一致
                            sw.WriteLine($"{kvp.Key} = {kvp.Value.ToString(System.Globalization.CultureInfo.InvariantCulture)}");
                        }
                    }
                    else
                    {
                        sw.WriteLine("; No probabilities currently configured.");
                    }
                    sw.WriteLine();
                }
                Debug.Log($"Config saved to: {filename}");
            }
            catch (System.Exception ex)
            {
                Debug.LogError($"Error saving config file '{filename}': {ex.Message}");
            }
        }
    }
}