tapdb: Update AssetQueryFilters to handle additional filter options

tapdb/assets_store.go

@@ -883,12 +883,41 @@ func (a *AssetStore) constraintsToDbFilter(
 				Valid: true,
 			}
 		}
+
+		if query.MaxAmt != 0 {
+			assetFilter.MaxAmt = sql.NullInt64{
+				Int64: int64(query.MaxAmt),
+				Valid: true,
+			}
+		} else {
+			// If MaxAmt is unspecified, use valid: false to ignore
+			// the amount option in the SQL query
+			assetFilter.MaxAmt = sql.NullInt64{
+				Valid: false,
+			}
+		}
+
 		if query.MinAnchorHeight != 0 {
 			assetFilter.MinAnchorHeight = sqlInt32(
 				query.MinAnchorHeight,
 			)
 		}
 
+		if query.ScriptKeyID != nil {
+			assetFilter.ScriptKeyID = sql.NullInt64{
+				Int64: *query.ScriptKeyID,
+				Valid: true,
+			}
+		}
+
+		if query.AnchorPoint != nil {
+			outpointBytes, err := encodeOutpoint(*query.AnchorPoint)
+
+			if err == nil {
+				assetFilter.AnchorPoint = outpointBytes
+			}
+		}
+
 		// Add asset ID bytes and group key bytes to the filter. These
 		// byte arrays are empty if the asset ID or group key is not
 		// specified in the query.
@@ -980,6 +1009,10 @@ type AssetQueryFilters struct {
 	// MinAnchorHeight is the minimum block height the asset's anchor tx
 	// must have been confirmed at.
 	MinAnchorHeight int32
+
+	ScriptKeyID *int64
+
+	AnchorPoint *wire.OutPoint
 }
 
 // QueryBalancesByAsset queries the balances for assets or alternatively

tapdb/sqlc/queries/assets.sql

@@ -490,6 +490,7 @@ JOIN chain_txns txns
 -- specified.
 WHERE (
     assets.amount >= COALESCE(sqlc.narg('min_amt'), assets.amount) AND
+    assets.amount <= COALESCE(sqlc.narg('max_amt'), assets.amount) AND
     assets.spent = COALESCE(sqlc.narg('spent'), assets.spent) AND
     (key_group_info_view.tweaked_group_key = sqlc.narg('key_group_filter') OR
       sqlc.narg('key_group_filter') IS NULL) AND

tapfreighter/interface.go

@@ -35,6 +35,9 @@ type CommitmentConstraints struct {
 	// to satisfy the constraints.
 	MinAmt uint64
 
+	// MaxAmt specifies the maximum amount of minted assets to be selected.
+	MaxAmt uint64
+
 	// CoinSelectType is the type of coins that should be selected.
 	CoinSelectType tapsend.CoinSelectType
 }