fix: offset

internal/db_channel.go

@@ -23,7 +23,6 @@ type DBChannel struct {
 	UUID     int64
 	Username string
 	Title    string
-	Offset   int
 	MinID    int
 }
 
@@ -86,28 +85,18 @@ func (c *DBChannel) Get(ctx context.Context) error {
 		}
 	}
 	c.MinID = int(m.MinID)
-	c.Offset = int(m.Offset)
 
 	return nil
 }
 
-func (c *DBChannel) Update(ctx context.Context, offsetID int) error {
-	if c.Offset == 0 {
-		c.Offset = offsetID
-	}
-
-	if c.Offset > offsetID {
-		c.Offset = offsetID
-	}
-
-	if c.MinID < offsetID {
-		c.MinID = offsetID
+func (c *DBChannel) Update(ctx context.Context, msgID int) error {
+	if c.MinID < msgID {
+		c.MinID = msgID
 	}
 
 	tbl := table.Channels
 	_, err := tbl.UPDATE().
 		SET(
-			tbl.Offset.SET(Int64(int64(c.Offset))),
 			tbl.MinID.SET(Int64(int64(c.MinID))),
 		).
 		WHERE(tbl.UUID.EQ(Int64(c.UUID))).