using System;
using System.IO;
using Newtonsoft.Json.Linq;

namespace PCMonitor {

    /// <summary>
    /// Configuration Reader
    /// Membaca konfigurasi dari file JSON
    /// </summary>
    public static class ConfigReader {
        private static readonly string ConfigPath = Path.Combine(
            Environment.GetFolderPath(Environment.SpecialFolder.CommonApplicationData),
            "PCMonitor", "config.json"
        );

        private static JObject configData;

        static ConfigReader() {
            LoadConfig();
        }

        private static void LoadConfig() {
            try {
                if (!File.Exists(ConfigPath)) {
                    CreateDefaultConfig();
                }

                string jsonContent = File.ReadAllText(ConfigPath);
                configData = JObject.Parse(jsonContent);
            } catch (Exception ex) {
                // Fallback to defaults
                configData = JObject.Parse(GetDefaultConfigJson());
            }
        }

        public static string GetApiUrl() {
            return configData?["api_server"]?["url"]?.ToString() ?? "http://localhost:8080";
        }

        public static int GetMonitoringInterval() {
            return configData?["monitoring"]?["interval"]?.Value<int>() ?? 30000;
        }

        public static int GetScreenshotInterval() {
            return configData?["monitoring"]?["screenshot_interval"]?.Value<int>() ?? 300000;
        }

        public static bool IsDebugMode() {
            return configData?["debug"]?.Value<bool>() ?? false;
        }

        private static void CreateDefaultConfig() {
            Directory.CreateDirectory(Path.GetDirectoryName(ConfigPath));
            File.WriteAllText(ConfigPath, GetDefaultConfigJson());
        }

        private static string GetDefaultConfigJson() {
            return @"{
  ""api_server"": {
    ""url"": ""http://localhost:8080"",
    ""timeout"": 30
  },
  ""monitoring"": {
    ""interval"": 30000,
    ""screenshot_interval"": 300000,
    ""activity_interval"": 60000,
    ""process_interval"": 30000
  },
  ""bandwidth"": {
    ""enabled"": true,
    ""max_limit_kbps"": 100000,
    ""min_limit_kbps"": 64
  },
  ""security"": {
    ""require_ssl"": false,
    ""use_encryption"": false
  },
  ""logging"": {
    ""level"": ""INFO"",
    ""max_file_size"": 10485760,
    ""retention_days"": 30
  },
  ""debug"": false
}";
        }
    }
}