start point of hotlist support (untested)

database/hotlist.go

@@ -1,6 +1,6 @@
 /*
  * Amsterdam Web Communities System
- * Copyright (c) 2025 Erbosoft Metaverse Design Solutions, All Rights Reserved
+ * Copyright (c) 2025-2026 Erbosoft Metaverse Design Solutions, All Rights Reserved
  *
  * This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
@@ -9,9 +9,56 @@
 // The database package contains database management and storage logic.
 package database
 
+import "context"
+
+// ConferenceHotlist represents a user's conference hotlist.
 type ConferenceHotlist struct {
 	Uid      int32 `db:"uid"`
 	Sequence int16 `db:"sequence"`
 	CommId   int32 `db:"commid"`
 	ConfId   int32 `db:"confid"`
 }
+
+// Community gets the community pointer from the hotlist.
+func (h *ConferenceHotlist) Community(ctx context.Context) (*Community, error) {
+	return AmGetCommunity(ctx, h.CommId)
+}
+
+// Conference gets the conference pointer from the hotlist.
+func (h *ConferenceHotlist) Conference(ctx context.Context) (*Conference, error) {
+	return AmGetConference(ctx, h.ConfId)
+}
+
+// AmGetConferenceHotlist gets the conference hotlist for a user.
+func AmGetConferenceHotlist(ctx context.Context, u *User) ([]ConferenceHotlist, error) {
+	var rc []ConferenceHotlist
+	err := amdb.SelectContext(ctx, &rc, "SELECT * FROM confhotlist WHERE uid = ? ORDER BY sequence", u.Uid)
+	return rc, err
+}
+
+// AmCopyConferenceHotlist copies the conference hotlist from one user to another.
+func AmCopyConferenceHotlist(ctx context.Context, from, to *User) error {
+	hotlist, err := AmGetConferenceHotlist(ctx, from)
+	if err != nil {
+		return err
+	}
+
+	success := false
+	tx := amdb.MustBegin()
+	defer func() {
+		if !success {
+			tx.Rollback()
+		}
+	}()
+	for _, hl := range hotlist {
+		if _, err = tx.ExecContext(ctx, "INSERT INTO confhotlist (uid, sequence, commid, confid) VALUES (?, ?, ?, ?)",
+			to.Uid, hl.Sequence, hl.CommId, hl.ConfId); err != nil {
+			return err
+		}
+	}
+	if err = tx.Commit(); err != nil {
+		return err
+	}
+	success = true
+	return nil
+}