feat: 实现采购运行时规格解析 (#255)

admin/service/ai_specmatch.go

@@ -153,55 +153,39 @@ func MatchSybSpecWithAI(ctx context.Context, db *sql.DB, actor *model.User, snap
 	}
 	bindings := bindAICandidates(eligible)
 	baseDecision.CandidatesJSON = candidateAuditJSON(bindings)
-	if snapshot.Client == nil || snapshot.Secret == "" || snapshot.Provider.ProviderID == "" {
-		return recordAIMatchWithoutSave(db, baseDecision, "failed", "AI 服务商运行快照不可用")
-	}
 	request := AIModelMatchRequest{ProductTitle: truncateRunes(orderContext.Order.Title, 300), SourceSpec: truncateRunes(orderContext.Order.ProductSpec, 300)}
 	for _, binding := range bindings {
 		request.Candidates = append(request.Candidates, AIModelCandidate{ID: binding.ID,
 			Label: truncateRunes(binding.Choice.Label, 300), Options: boundedAIOptions(binding.Choice.Options)})
 	}
-	response, modelErr := snapshot.Client.Match(ctx, snapshot.Provider, snapshot.Secret, request)
-	if modelErr != nil {
-		result, auditErr := recordAIMatchWithoutSave(db, baseDecision, "failed", safeAIError(modelErr))
-		result.ModelCalled = true
-		return result, auditErr
-	}
-	if err := validateAIModelMatchResponse(response); err != nil {
-		result, auditErr := recordAIMatchWithoutSave(db, baseDecision, "failed", err.Error())
-		result.ModelCalled = true
-		return result, auditErr
-	}
+	selection := selectAIWhitelistedCandidate(ctx, snapshot, request)
+	response := selection.Response
 	baseDecision.ChosenCandidateID = response.CandidateID
 	baseDecision.ConfidenceBPS = response.ConfidenceBPS
-	baseDecision.ConfidenceSet = true
-	baseDecision.Reason = response.Reason
+	baseDecision.ConfidenceSet = selection.ConfidenceSet
+	baseDecision.Reason = selection.Reason
 	baseDecision.ConflictDimensionsJSON = stringArrayJSON(response.ConflictDimensions)
 	baseDecision.MissingDimensionsJSON = stringArrayJSON(response.MissingDimensions)
-	if response.Conclusion != "match" {
-		result, auditErr := recordAIMatchWithoutSave(db, baseDecision, "rejected", response.Reason)
-		result.ModelCalled = true
+	if selection.Status != aiSelectionMatched {
+		outcome := "rejected"
+		if selection.Status == aiSelectionFailed {
+			outcome = "failed"
+		}
+		result, auditErr := recordAIMatchWithoutSave(db, baseDecision, outcome, selection.Reason)
+		result.ModelCalled = selection.ModelCalled
 		return result, auditErr
 	}
 	selected, found := bindingByID(bindings, response.CandidateID)
 	if !found {
-		result, auditErr := recordAIMatchWithoutSave(db, baseDecision, "rejected", "模型返回了不在候选白名单中的编号")
-		result.ModelCalled = true
+		// selectAIWhitelistedCandidate 已核对过同一 request；此分支只防以后
+		// 绑定构造被改坏时把错误候选写进真实映射。
+		result, auditErr := recordAIMatchWithoutSave(db, baseDecision, "rejected", "候选绑定已变化，未保存映射")
+		result.ModelCalled = selection.ModelCalled
 		return result, auditErr
 	}
 	baseDecision.ChosenOptionKey = selected.Choice.Key
-	if len(response.ConflictDimensions) > 0 || len(response.MissingDimensions) > 0 {
-		result, auditErr := recordAIMatchWithoutSave(db, baseDecision, "rejected", "模型报告仍有冲突或缺失维度")
-		result.ModelCalled = true
-		return result, auditErr
-	}
-	if response.ConfidenceBPS < snapshot.Provider.ConfidenceThresholdBPS {
-		result, auditErr := recordAIMatchWithoutSave(db, baseDecision, "rejected", "模型置信度低于管理员设置的自动写入阈值")
-		result.ModelCalled = true
-		return result, auditErr
-	}
 	result, err := saveAutomaticMapping(db, *actor, *orderContext, selected.Choice, "ai", baseDecision)
-	result.ModelCalled = true
+	result.ModelCalled = selection.ModelCalled
 	return result, err
 }