sqldb: simplify and fixup the existing invoice store schema and queries

This commit attempts to fix some issues with the invoice store's schema that we
couldn't foresee before the implementation was finished. This is safe as the
schema has not been instantiated yet outside of unit tests. Furthermore the
commit updates invoice store SQL queries according to fixes in the schema as
well as to prepare the higher level implementation in the upcoming commits.

sqldb/sqlc/models.go

@@ -9,50 +9,52 @@ import (
 	"time"
 )
 
-type AmpInvoiceHtlc struct {
+type AmpSubInvoice struct {
+	SetID       []byte
+	State       int16
+	CreatedAt   time.Time
+	SettledAt   sql.NullTime
+	SettleIndex sql.NullInt64
+	InvoiceID   int64
+}
+
+type AmpSubInvoiceHtlc struct {
+	InvoiceID  int64
 	SetID      []byte
 	HtlcID     int64
-	InvoiceID  int32
 	RootShare  []byte
 	ChildIndex int64
 	Hash       []byte
 	Preimage   []byte
 }
 
-type AmpInvoicePayment struct {
-	SetID        []byte
-	State        int16
-	CreatedAt    time.Time
-	SettledIndex sql.NullInt32
-	InvoiceID    int32
-}
-
 type Invoice struct {
-	ID             int32
-	Hash           []byte
-	Preimage       []byte
-	Memo           sql.NullString
-	AmountMsat     int64
-	CltvDelta      sql.NullInt32
-	Expiry         int32
-	PaymentAddr    []byte
-	PaymentRequest sql.NullString
-	State          int16
-	AmountPaidMsat int64
-	IsAmp          bool
-	IsHodl         bool
-	IsKeysend      bool
-	CreatedAt      time.Time
+	ID                 int64
+	Hash               []byte
+	Preimage           []byte
+	SettleIndex        sql.NullInt64
+	SettledAt          sql.NullTime
+	Memo               sql.NullString
+	AmountMsat         int64
+	CltvDelta          sql.NullInt32
+	Expiry             int32
+	PaymentAddr        []byte
+	PaymentRequest     sql.NullString
+	PaymentRequestHash []byte
+	State              int16
+	AmountPaidMsat     int64
+	IsAmp              bool
+	IsHodl             bool
+	IsKeysend          bool
+	CreatedAt          time.Time
 }
 
 type InvoiceEvent struct {
-	ID            int32
-	CreatedAt     time.Time
-	InvoiceID     int32
-	HtlcID        sql.NullInt64
-	SetID         []byte
-	EventType     int32
-	EventMetadata []byte
+	ID        int64
+	AddedAt   time.Time
+	EventType int32
+	InvoiceID int64
+	SetID     []byte
 }
 
 type InvoiceEventType struct {
@@ -62,13 +64,13 @@ type InvoiceEventType struct {
 
 type InvoiceFeature struct {
 	Feature   int32
-	InvoiceID int32
+	InvoiceID int64
 }
 
 type InvoiceHtlc struct {
-	ID           int32
-	HtlcID       int64
+	ID           int64
 	ChanID       string
+	HtlcID       int64
 	AmountMsat   int64
 	TotalMppMsat sql.NullInt64
 	AcceptHeight int32
@@ -76,7 +78,7 @@ type InvoiceHtlc struct {
 	ExpiryHeight int32
 	State        int16
 	ResolveTime  sql.NullTime
-	InvoiceID    int32
+	InvoiceID    int64
 }
 
 type InvoiceHtlcCustomRecord struct {
@@ -85,9 +87,7 @@ type InvoiceHtlcCustomRecord struct {
 	HtlcID int64
 }
 
-type InvoicePayment struct {
-	ID             int32
-	SettledAt      time.Time
-	AmountPaidMsat int64
-	InvoiceID      int32
+type InvoiceSequence struct {
+	Name         string
+	CurrentValue int64
 }