ShopSolution-backend/Webshop.Infrastructure/Services/SettingService.cs

// src/Webshop.Infrastructure/Services/SettingService.cs
using System;
using System.Threading.Tasks;
using Webshop.Domain.Entities;
using Webshop.Domain.Interfaces;

namespace Webshop.Infrastructure.Services
{
    // Implementiert die "Business"-Methoden
    public class SettingService : ISettingService
    {
        private readonly ISettingRepository _settingRepository;

        public SettingService(ISettingRepository settingRepository)
        {
            _settingRepository = settingRepository;
        }

        public async Task<T> GetSettingValueAsync<T>(string key, T defaultValue)
        {
            var setting = await _settingRepository.GetByKeyAsync(key);
            if (setting == null || !setting.IsActive || string.IsNullOrEmpty(setting.Value))
            {
                return defaultValue;
            }

            try
            {
                return (T)Convert.ChangeType(setting.Value, typeof(T));
            }
            catch
            {
                return defaultValue;
            }
        }

        public async Task UpdateSettingAsync(string key, string? value)
        {
            var setting = await _settingRepository.GetByKeyAsync(key);
            if (setting != null)
            {
                setting.Value = value;
                await _settingRepository.UpdateAsync(setting);
            }
            else
            {
                var newSetting = new Setting { Key = key, Value = value, IsActive = true, Group = "General" };
                await _settingRepository.AddAsync(newSetting);
            }
        }
    }
}