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

namespace OrpaonVision.SiteApp.Runtime.Services
{
    /// <summary>
    /// 规则引擎简化实现（MVP 阶段）。
    /// </summary>
    public sealed class SimpleRuleEngineService : IRuleEngineService
    {
        private readonly RuntimeOptions _options;

        /// <summary>
        /// 构造函数。
        /// </summary>
        public SimpleRuleEngineService(RuntimeOptions options)
        {
            _options = options;
        }

        /// <inheritdoc />
        public Result<RuntimeDecisionDto> Evaluate(int currentLayer, InferenceResultDto inference)
        {
            var isPass = inference.Label == "OK" || inference.Confidence < _options.NgConfidenceThreshold;
            var decision = new RuntimeDecisionDto
            {
                IsPass = isPass,
                Code = isPass ? "RULE_PASS" : "RULE_NG",
                Message = isPass
                    ? $"第 {currentLayer} 层判定通过。"
                    : $"第 {currentLayer} 层判定 NG：{inference.Label}"
            };

            return Result<RuntimeDecisionDto>.Success(decision, message: "规则判定完成。");
        }
    }
}