using OrpaonVision.Core.Results;
using OrpaonVision.SiteApp.Runtime.Contracts;

namespace OrpaonVision.SiteApp.Runtime.Services
{
    /// <summary>
    /// 推理服务模拟实现（MVP 阶段）。
    /// </summary>
    public sealed class MockInferenceService : IInferenceService
    {
        /// <inheritdoc />
        public Result<InferenceResultDto> Predict(CameraFrameDto frame)
        {
            var tick = DateTime.UtcNow.Ticks;
            var label = tick % 2 == 0 ? "OK" : "NG_MISALIGN";
            var confidence = label == "OK" ? 0.92m : 0.78m;

            var result = new InferenceResultDto
            {
                FrameId = frame.FrameId,
                Label = label,
                Confidence = confidence
            };

            return Result<InferenceResultDto>.Success(result, message: "推理完成。");
        }
    }
}