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using System.Threading.Tasks;
namespace Znyc.Admin.Commons.VerificationCode
{
/// <summary>
/// 验证码接口
/// </summary>
public interface ICaptcha
{
/// <summary>
/// 生成随机验证码
/// </summary>
/// <param name="codeLength"></param>
/// <returns></returns>
Task<int> GenerateRandomCaptchaAsync(int codeLength = 4);
/// <summary>
/// 生成验证码图片
/// </summary>
/// <param name="captchaCode">验证码</param>
/// <param name="width">宽为0将根据验证码长度自动匹配合适宽度</param>
/// <param name="height">高</param>
/// <returns></returns>
Task<CaptchaResult> GenerateCaptchaImageAsync(string captchaCode, int width = 0, int height = 30);
}
}