#nullable enable
using Furion.DependencyInjection;
using Microsoft.Extensions.Options;
using YD_Event.Core.Options;
using AlibabaCloud.OpenApiClient.Models;
using AlibabaCloud.SDK.Ocr20191230;
using AlibabaCloud.SDK.Ocr20191230.Models;
using System.Threading.Tasks;
using System;

namespace YD_Event.Core.Ocr;

/// <summary>
/// OCR服务实现
/// </summary>
public class OcrService : ITransient
{
    private readonly AliyunOcrOptions _options;

    public OcrService(IOptions<AliyunOcrOptions> options)
    {
        _options = options.Value;
    }

    /// <summary>
    /// 识别身份证
    /// </summary>
    /// <param name="imageUrl">图片URL</param>
    /// <returns></returns>
    public async Task<OcrResult> RecognizeIdCardAsync(string imageUrl)
    {
        if (string.IsNullOrWhiteSpace(imageUrl))
        {
            return new OcrResult { Success = false, Message = "图片URL不能为空" };
        }

        try
        {
            var config = new AlibabaCloud.OpenApiClient.Models.Config
            {
                AccessKeyId = _options.AccessKeyId,
                AccessKeySecret = _options.AccessKeySecret,
                Endpoint = _options.Endpoint
            };

            var client = new Client(config);
            var request = new RecognizeIdentityCardRequest
            {
                ImageURL = imageUrl,
                Side = "face" // 默认正面
            };
            
            // 使用 RuntimeOptions 可以自定义超时等配置，这里简单起见使用默认
            var response = await client.RecognizeIdentityCardAsync(request);

            if (response.Body != null && response.Body.Data != null && response.Body.Data.FrontResult != null)
            {
                var data = response.Body.Data.FrontResult;
                // 解析结果
                return new OcrResult
                {
                    Success = true,
                    Name = data.Name,
                    Gender = data.Gender,
                    IdCardNumber = data.IDNumber,
                    BirthDate = data.BirthDate,
                    Message = "识别成功"
                };
            }
            
            return new OcrResult { Success = false, Message = "未识别到有效身份证信息" };
        }
        catch (Exception ex)
        {
            return new OcrResult { Success = false, Message = $"OCR识别异常: {ex.Message}" };
        }
    }
}