ZhiYi/ZhiYi.Core.Application/Services/Implements/CaptchaAppService.cs

namespace ZhiYi.Core.Application.Services.Implements
{
    public class CaptchaAppService : ICaptchaAppService
    {
        private readonly IServiceProvider _serviceProvider;
        private readonly IDatabase _redis;
        private readonly ILogger<CaptchaAppService> _logger;
        public CaptchaAppService(IServiceProvider serviceProvider, IConnectionMultiplexer redis, ILogger<CaptchaAppService> logger)
        {
            _serviceProvider = serviceProvider;
            _redis = redis.GetDatabase();
            _logger = logger;
        }

        public async Task<CaptchaResponseDto> GetCaptchaAsync()
        {
            var scope = _serviceProvider.CreateScope();
            var captchaService = scope.ServiceProvider.GetRequiredService<CaptchaService>();
            try
            {
                //生成验证码
                var captchaText = captchaService.GenerateCaptchaText();
                //生成验证码图片
                var captcha = captchaService.GenerateCaptchaImageByImageSharp(captchaText);
                var captchaId = Guid.NewGuid().ToString();
                if (!captchaText.IsNullOrEmpty() && captcha.Length > 0)
                {
                    _redis.StringSet($"captcha:{captchaId}", captchaText, TimeSpan.FromMinutes(2));
                    //_redis.StringSet($"captcha:{captchaId}", captchaText);
                }
                return await Task.FromResult(new CaptchaResponseDto { File = captcha, CaptchaId = captchaId, Captcha = captchaText });
            }
            catch(Exception ex)
            {
                _logger.LogError("获取验证码失败:{message}", ex.Message);
                throw new Exception("获取验证码失败");
            }
            
        }
    }
}