fix: generate lucky gift tier ids in admin

server/admin/internal/modules/luckygift/handler.go

@@ -2,6 +2,7 @@ package luckygift
 
 import (
 	"context"
+	"fmt"
 	"math"
 	"strings"
 	"time"
@@ -227,12 +228,17 @@ func (h *Handler) activityContext(c *gin.Context) (context.Context, context.Canc
 func configToProto(req configRequest) *activityv1.LuckyGiftRuleConfig {
 	stages := make([]*activityv1.LuckyGiftRuleStage, 0, len(req.Stages))
 	for _, stage := range req.Stages {
+		stageName := strings.TrimSpace(stage.Stage)
+		tierIDCounts := make(map[string]int, len(stage.Tiers))
 		tiers := make([]*activityv1.LuckyGiftRuleTier, 0, len(stage.Tiers))
 		for _, tier := range stage.Tiers {
+			multiplierPPM := multiplierToPPM(tier.Multiplier)
 			tiers = append(tiers, &activityv1.LuckyGiftRuleTier{
-				Stage:          strings.TrimSpace(stage.Stage),
+				Stage: stageName,
-				TierId:         strings.TrimSpace(tier.TierID),
+				// 奖档 ID 是 activity-service 持久化主键的一部分，不能让运营手工维护；admin-server 按阶段和倍率生成稳定 ID，
-				MultiplierPpm:  multiplierToPPM(tier.Multiplier),
+				// 同一阶段同倍率出现多行时追加序号，保证进入 activity-service 前已经满足唯一性。
+				TierId:         generatedLuckyGiftTierID(stageName, multiplierPPM, tierIDCounts),
+				MultiplierPpm:  multiplierPPM,
 				BaseWeightPpm:  percentToPPM(tier.ProbabilityPercent),
 				RewardSource:   strings.TrimSpace(tier.RewardSource),
 				HighWaterOnly:  tier.HighWaterOnly,
@@ -241,7 +247,7 @@ func configToProto(req configRequest) *activityv1.LuckyGiftRuleConfig {
 			})
 		}
 		stages = append(stages, &activityv1.LuckyGiftRuleStage{
-			Stage: strings.TrimSpace(stage.Stage),
+			Stage: stageName,
 			Tiers: tiers,
 		})
 	}
@@ -317,6 +323,29 @@ func configFromProto(config *activityv1.LuckyGiftRuleConfig) configDTO {
 	}
 }
 
+func generatedLuckyGiftTierID(stage string, multiplierPPM int64, counts map[string]int) string {
+	baseID := luckyGiftTierIDBase(stage, multiplierPPM)
+	counts[baseID]++
+	if counts[baseID] == 1 {
+		return baseID
+	}
+	return fmt.Sprintf("%s_%d", baseID, counts[baseID])
+}
+
+func luckyGiftTierIDBase(stage string, multiplierPPM int64) string {
+	stage = strings.TrimSpace(stage)
+	if multiplierPPM <= 0 {
+		return stage + "_none"
+	}
+	whole := multiplierPPM / 1_000_000
+	fraction := multiplierPPM % 1_000_000
+	if fraction == 0 {
+		return fmt.Sprintf("%s_%dx", stage, whole)
+	}
+	fractionText := strings.TrimRight(fmt.Sprintf("%06d", fraction), "0")
+	return fmt.Sprintf("%s_%d_%sx", stage, whole, fractionText)
+}
+
 func percentToPPM(value float64) int64 {
 	return int64(math.Round(value * 10_000))
 }

server/admin/internal/modules/luckygift/handler_test.go

@@ -64,6 +64,32 @@ func TestConfigToProtoConvertsBusinessUnitsToPPM(t *testing.T) {
 	}
 }
 
+func TestConfigToProtoGeneratesUniqueTierIDs(t *testing.T) {
+	config := configToProto(configRequest{
+		PoolID: "lucky",
+		Stages: []stageDTO{
+			{
+				Stage: "advanced",
+				Tiers: []tierDTO{
+					{TierID: "manual_one", Multiplier: 0, ProbabilityPercent: 50, RewardSource: "base_rtp", Enabled: true},
+					{TierID: "manual_two", Multiplier: 5, ProbabilityPercent: 25, RewardSource: "base_rtp", Enabled: true},
+					{TierID: "manual_two", Multiplier: 5, ProbabilityPercent: 25, RewardSource: "base_rtp", Enabled: true},
+					{TierID: "manual_decimal", Multiplier: 0.5, ProbabilityPercent: 0, RewardSource: "base_rtp"},
+				},
+			},
+		},
+	})
+
+	tiers := config.GetStages()[0].GetTiers()
+	got := []string{tiers[0].GetTierId(), tiers[1].GetTierId(), tiers[2].GetTierId(), tiers[3].GetTierId()}
+	want := []string{"advanced_none", "advanced_5x", "advanced_5x_2", "advanced_0_5x"}
+	for index := range want {
+		if got[index] != want[index] {
+			t.Fatalf("tier id[%d] = %q, want %q; all=%v", index, got[index], want[index], got)
+		}
+	}
+}
+
 func TestConfigFromProtoConvertsPPMToBusinessUnits(t *testing.T) {
 	config := configFromProto(&activityv1.LuckyGiftRuleConfig{
 		AppCode:                  "hyapp",