multi: add relevant queries for QueryPayments implemenation

Author: ziggie1984

payments/db/sql_store.go

@@ -1,14 +1,32 @@
 package paymentsdb
 
 import (
+	"context"
 	"fmt"
 
 	"github.com/lightningnetwork/lnd/sqldb"
+	"github.com/lightningnetwork/lnd/sqldb/sqlc"
 )
 
 // SQLQueries is a subset of the sqlc.Querier interface that can be used to
 // execute queries against the SQL payments tables.
 type SQLQueries interface {
+	/*
+		Payment DB read operations.
+	*/
+	FilterPayments(ctx context.Context, query sqlc.FilterPaymentsParams) ([]sqlc.FilterPaymentsRow, error)
+	FetchPayment(ctx context.Context, paymentIdentifier []byte) (sqlc.FetchPaymentRow, error)
+	FetchPaymentsByIDs(ctx context.Context, paymentIDs []int64) ([]sqlc.FetchPaymentsByIDsRow, error)
+
+	CountPayments(ctx context.Context) (int64, error)
+
+	FetchHtlcAttemptsForPayments(ctx context.Context, paymentIDs []int64) ([]sqlc.FetchHtlcAttemptsForPaymentsRow, error)
+	FetchAllInflightAttempts(ctx context.Context) ([]sqlc.PaymentHtlcAttempt, error)
+	FetchHopsForAttempts(ctx context.Context, htlcAttemptIndices []int64) ([]sqlc.FetchHopsForAttemptsRow, error)
+
+	FetchPaymentLevelFirstHopCustomRecords(ctx context.Context, paymentIDs []int64) ([]sqlc.PaymentFirstHopCustomRecord, error)
+	FetchRouteLevelFirstHopCustomRecords(ctx context.Context, htlcAttemptIndices []int64) ([]sqlc.PaymentAttemptFirstHopCustomRecord, error)
+	FetchHopLevelCustomRecords(ctx context.Context, hopIDs []int64) ([]sqlc.PaymentHopCustomRecord, error)
 }
 
 // BatchedSQLQueries is a version of the SQLQueries that's capable