feat: support player

backend/app/models/users.go

@@ -283,3 +283,25 @@ func (m *usersModel) GetUsersMapByIDs(ctx context.Context, ids []int64) (map[int
 		return item.ID, item
 	}), nil
 }
+
+// HasBought
+func (m *usersModel) HasBought(ctx context.Context, userID, postID int64) (bool, error) {
+	tbl := table.UserPosts
+	stmt := tbl.
+		SELECT(tbl.ID).
+		WHERE(
+			tbl.UserID.EQ(Int64(userID)).AND(
+				tbl.PostID.EQ(Int64(postID)),
+			),
+		)
+
+	m.log.Infof("sql: %s", stmt.DebugSql())
+
+	var userPost model.UserPosts
+	if err := stmt.QueryContext(ctx, db, &userPost); err != nil {
+		m.log.Errorf("error querying user post: %v", err)
+		return false, err
+	}
+
+	return userPost.ID > 0, nil
+}