using System;
using System.IO;
using System.Text.Json;
using ShortcutsHelper.Models;

namespace ShortcutsHelper.Services
{
    public class ConfigurationService
    {
        private const string ConfigFileName = "shortcuts_config.json";
        private static string ConfigFilePath => Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData), "ShortcutsHelper", ConfigFileName);

        public AppConfiguration LoadConfiguration()
        {
            try
            {
                if (File.Exists(ConfigFilePath))
                {
                    string json = File.ReadAllText(ConfigFilePath);
                    return JsonSerializer.Deserialize<AppConfiguration>(json) ?? new AppConfiguration();
                }
            }
            catch (Exception ex)
            {
                Console.WriteLine($"Error al cargar configuración: {ex.Message}");
            }

            return new AppConfiguration();
        }

        public void SaveConfiguration(AppConfiguration config)
        {
            try
            {
                string directory = Path.GetDirectoryName(ConfigFilePath)!;
                if (!Directory.Exists(directory))
                {
                    Directory.CreateDirectory(directory);
                }

                var options = new JsonSerializerOptions
                {
                    WriteIndented = true
                };

                string json = JsonSerializer.Serialize(config, options);
                File.WriteAllText(ConfigFilePath, json);
            }
            catch (Exception ex)
            {
                Console.WriteLine($"Error al guardar configuración: {ex.Message}");
            }
        }

        public ApplicationSettings GetApplicationSettings(AppConfiguration config, string applicationName)
        {
            if (config.Applications.TryGetValue(applicationName, out var settings))
            {
                return settings;
            }

            // Crear configuración por defecto para nueva aplicación
            var defaultSettings = new ApplicationSettings();
            config.Applications[applicationName] = defaultSettings;
            return defaultSettings;
        }

        public void UpdateApplicationSettings(AppConfiguration config, string applicationName, ApplicationSettings settings)
        {
            config.Applications[applicationName] = settings;
        }
    }
}