revert(streamer): don't distribute abstained part of sponsored distri… (

#1117)

x/streamer/types/distr_info.go

@@ -1,6 +1,7 @@
 package types
 
 import (
+	"cosmossdk.io/math"
 	sdk "github.com/cosmos/cosmos-sdk/types"
 
 	sponsorshiptypes "github.com/dymensionxyz/dymension/v3/x/sponsorship/types"
@@ -35,19 +36,38 @@ func (r DistrRecord) ValidateBasic() error {
 	return nil
 }
 
-// DistrInfoFromDistribution converts sponsorship distribution to the DistrInfo type.
-// Returning an empty DistrInfo (with zero DistrInfo.TotalWeight) is a valid scenario.
+// DistrInfoFromDistribution converts sponsorship distribution to the DistrInfo type. Returning an empty
+// DistrInfo (with zero DistrInfo.TotalWeight) is a valid scenario. Note that some part of the distribution
+// might be abstained. In that case, the sum of gauge powers would be less than the total distribution weight.
+//
+// Example! Let's say we have the following distribution in the sponsorship:
+//
+//	Total: 100
+//	Gauge1: 30%
+//	Gauge2: 50%
+//	Abstained: 20%
+//
+// We want to distribute 100 DYM according to this distribution. Since 20% is abstained, we will normalize the figures
+// for Gauge1 and Gauge2. The total "active" voting power is 80%, which comes from 30% (Gauge1) + 50% (Gauge2).
+//
+//	Gauge1: 30% / 80% = 37.5% (in the new distribution)
+//	Gauge2: 50% / 80% = 62.5% (in the new distribution)
+//
+// So, Gauge1 gets 37.5 DYM, and Gauge2 gets 62.5 DYM.
 func DistrInfoFromDistribution(d sponsorshiptypes.Distribution) *DistrInfo {
+	totalWeight := math.ZeroInt()
+
 	records := make([]DistrRecord, 0, len(d.Gauges))
 	for _, g := range d.Gauges {
 		records = append(records, DistrRecord{
 			GaugeId: g.GaugeId,
 			Weight:  g.Power,
 		})
+		totalWeight = totalWeight.Add(g.Power)
 	}
 
 	return &DistrInfo{
-		TotalWeight: d.VotingPower,
+		TotalWeight: totalWeight,
 		Records:     records,
 	}
 }

x/streamer/types/distr_info_test.go

@@ -74,6 +74,17 @@ func TestDistrInfoFromDistribution(t *testing.T) {
 				},
 			},
 		},
+		{
+			name: "Distribution with empty gauges",
+			distr: sponsorshiptypes.Distribution{
+				VotingPower: sdk.NewInt(30),
+				Gauges:      []sponsorshiptypes.Gauge{},
+			},
+			expDistr: &types.DistrInfo{
+				TotalWeight: sdk.ZeroInt(),
+				Records:     []types.DistrRecord{},
+			},
+		},
 		{
 			name: "Distribution with abstained gauge",
 			distr: sponsorshiptypes.Distribution{
@@ -91,7 +102,7 @@ func TestDistrInfoFromDistribution(t *testing.T) {
 				},
 			},
 			expDistr: &types.DistrInfo{
-				TotalWeight: sdk.NewInt(100),
+				TotalWeight: sdk.NewInt(70),
 				Records: []types.DistrRecord{
 					// 30 is abstained
 					{