namespace Application;

/// <summary>
/// 配置应用服务接口
/// </summary>
public interface IConfigApplication
{
    /// <summary>
    /// 获取配置值
    /// </summary>
    Task<string> GetConfigAsync(string key);

    /// <summary>
    /// 设置配置值
    /// </summary>
    Task SetConfigAsync(string key, string value);
}

/// <summary>
/// 配置应用服务实现
/// </summary>
public class ConfigApplication(
    IConfigService configService,
    ILogger<ConfigApplication> logger
) : IConfigApplication
{
    public async Task<string> GetConfigAsync(string key)
    {
        if (string.IsNullOrWhiteSpace(key))
        {
            throw new ValidationException("配置键不能为空");
        }

        var value = await configService.GetConfigByKeyAsync<string>(key);
        return value ?? string.Empty;
    }

    public async Task SetConfigAsync(string key, string value)
    {
        if (string.IsNullOrWhiteSpace(key))
        {
            throw new ValidationException("配置键不能为空");
        }

        var success = await configService.SetConfigByKeyAsync(key, value);
        if (!success)
        {
            throw new BusinessException($"设置配置 {key} 失败");
        }

        logger.LogInformation("配置 {Key} 已更新", key);
    }
}