completed manage conference list

conferenceadmin.go

@@ -865,3 +865,39 @@ func ManageConferenceList(ctxt ui.AmContext) (string, any) {
 	ctxt.SetFrameTitle("Manage Conference List")
 	return "framed", "manage_conflist.jet"
 }
+
+/* ManageDeleteConference handles the deletion of a conference from the management menu.
+ * Parameters:
+ *     ctxt - The AmContext for the request.
+ * Returns:
+ *     Command string dictating what to be rendered.
+ *     Data as a parameter for the command string.
+ */
+func ManageDeleteConference(ctxt ui.AmContext) (string, any) {
+	comm := ctxt.CurrentCommunity()
+	conf := ctxt.GetScratch("currentConference").(*database.Conference)
+	myLevel := ctxt.GetScratch("levelInConference").(uint16)
+	if !conf.TestPermission("Conference.Delete", myLevel) {
+		return "error", ENOPERM
+	}
+
+	// Load the message box, and, if we have a valid "yes," then perform the delete
+	mbox, err := ui.AmLoadMessageBox("deleteConf")
+	if err != nil {
+		return "error", err
+	}
+	if mbox.Validate(ctxt, "yes") {
+		err := conf.Delete(ctxt.Ctx(), comm, ctxt.CurrentUser(), ctxt.RemoteIP(), ampool)
+		if err != nil {
+			return "error", err
+		}
+		return "redirect", fmt.Sprintf("/comm/%s/manage_conf", ctxt.CurrentCommunity().Alias)
+	}
+
+	// Set up to display the message box.
+	mbox.SetMessage(fmt.Sprintf(`You are about to delete the conference <span class="font-bold text-red-600">"%s"</span>
+		from the <span class="font-bold text-red-600">"%s"</span> community!`, conf.Name, comm.Name))
+	mbox.SetLink("no", fmt.Sprintf("/comm/%s/manage_conf", ctxt.CurrentCommunity().Alias))
+	mbox.SetLink("yes", fmt.Sprintf("/comm/%s/manage_conf/del/%s", ctxt.CurrentCommunity().Alias, ctxt.GetScratch("currentAlias")))
+	return mbox.Render(ctxt)
+}

database/conference.go

@@ -813,6 +813,131 @@ func (c *Conference) Stats(ctx context.Context) (int, int, error) {
 	return ntopic, npost, err
 }
 
+// backgroundPurgeConference purges out all the conference information in the background.
+func backgroundPurgeConference(ctx context.Context, confid int32) error {
+	// Purge out auxiliary conference tables first.
+	tx := amdb.MustBegin()
+	_, err := tx.ExecContext(ctx, "DELETE FROM confmember WHERE confid = ?", confid)
+	if err != nil {
+		log.Warnf("backgroundPurgeConference(%d): failed purging confmember: %v", confid, err)
+	}
+	_, err = tx.ExecContext(ctx, "DELETE FROM confsettings WHERE confid = ?", confid)
+	if err != nil {
+		log.Warnf("backgroundPurgeConference(%d): failed purging confsettings: %v", confid, err)
+	}
+	_, err = tx.ExecContext(ctx, "DELETE FROM confhotlist WHERE confid = ?", confid)
+	if err != nil {
+		log.Warnf("backgroundPurgeConference(%d): failed purging confhotlist: %v", confid, err)
+	}
+	_, err = tx.ExecContext(ctx, "DELETE FROM propconf WHERE confid = ?", confid)
+	if err != nil {
+		log.Warnf("backgroundPurgeConference(%d): failed purging propconf: %v", confid, err)
+	}
+	_, err = tx.ExecContext(ctx, "DELETE FROM confcustom WHERE confid = ?", confid)
+	if err != nil {
+		log.Warnf("backgroundPurgeConference(%d): failed purging confcustom: %v", confid, err)
+	}
+	err = tx.Commit()
+	if err != nil {
+		tx.Rollback()
+		return err
+	}
+
+	// Get all topic IDs in this conference.
+	var topicIds []int32
+	err = amdb.SelectContext(ctx, &topicIds, "SELECT topicid FROM topics WHERE confid = ?", confid)
+	if err != nil {
+		return err
+	}
+
+	// Erase each topic in turn by calling two of the "delete topic" internal functions.
+	for _, topicId := range topicIds {
+		tx := amdb.MustBegin()
+		err = eraseTopicRecords(ctx, tx, topicId)
+		if err == nil {
+			err = tx.Commit()
+		}
+		if err != nil {
+			tx.Rollback()
+			return err
+		}
+		err = backgroundPurgeTopic(ctx, topicId)
+		if err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+// Delete unlinks this conference from the community, deleting it entirely if the last link is gone.
+func (c *Conference) Delete(ctx context.Context, comm *Community, u *User, ipaddr string, background *util.WorkerPool) error {
+	success := false
+	tx := amdb.MustBegin()
+	defer func() {
+		if !success {
+			tx.Rollback()
+		}
+	}()
+	getConferenceMutex.Lock()
+	defer getConferenceMutex.Unlock()
+
+	// any references to conference other than this community?
+	row := tx.QueryRowContext(ctx, "SELECT COUNT(*) FROM commtoconf WHERE confid = ? AND commid <> ?", c.ConfId, comm.Id)
+	refCount := 0
+	err := row.Scan(&refCount)
+	if err != nil {
+		return err
+	}
+
+	// break the link with the community
+	if _, err = tx.ExecContext(ctx, "DELETE FROM commtoconf WHERE commid = ? AND confid = ?", comm.Id, c.ConfId); err != nil {
+		return err
+	}
+
+	if refCount == 0 {
+		// We have to delete all the conference core data now.
+		_, err = tx.ExecContext(ctx, "DELETE FROM confs WHERE confid = ?", c.ConfId)
+		if err == nil {
+			_, err = tx.ExecContext(ctx, "DELETE FROM confalias WHERE confid = ?", c.ConfId)
+		}
+	}
+	if err != nil {
+		return err
+	}
+
+	if err = tx.Commit(); err != nil {
+		return err
+	}
+	success = true
+
+	if refCount == 0 {
+		// kick the conference out of the cache
+		conferenceCache.Remove(c.ConfId)
+
+		// add an audit record
+		AmStoreAudit(AmNewAudit(AuditConferenceDelete, u.Uid, ipaddr, fmt.Sprintf("confid=%d", c.ConfId)))
+
+		// set up a background job to purge the rest of the data
+		confid := c.ConfId
+		background.Submit(func(ctx context.Context) {
+			start := time.Now()
+			// Just dump the whole conference property cache
+			getConferencePropMutex.Lock()
+			conferencePropCache.Purge()
+			getConferencePropMutex.Unlock()
+
+			// purge the conference data
+			err := backgroundPurgeConference(ctx, confid)
+			if err != nil {
+				log.Errorf("Conference purge(#%d) background job failed: %v", confid, err)
+			}
+			dur := time.Since(start)
+			log.Infof("Conference.Delete task completed in %v", dur)
+		})
+	}
+	return nil
+}
+
 /* AmGetConference returns a conference given its ID.
  * Parameters:
  *     ctx - Standard Go context value.

database/topic.go

@@ -478,10 +478,13 @@ func (t *Topic) Delete(ctx context.Context, u *User, ipaddr string, background *
 	// Spin off a background task to finish deleting this topic.
 	myTopicId := t.TopicId
 	background.Submit(func(ctx context.Context) {
+		start := time.Now()
 		err := backgroundPurgeTopic(ctx, myTopicId)
 		if err != nil {
 			log.Errorf("backgroundTopicPurge FAILED with %v", err)
 		}
+		dur := time.Since(start)
+		log.Infof("Topic.Delete task completed in %v", dur)
 	})
 
 	return nil

email/message.go

@@ -126,10 +126,13 @@ func (m *amMessage) Send() {
  *     The new Message.
  */
 func AmNewEmailMessage(sender int32, ip string) Message {
-	rc := freeMessages.Get().(*amMessage)
+	var rc *amMessage
-	if rc == nil {
+	tmp := freeMessages.Get()
+	if tmp == nil {
 		rc = &amMessage{to: make([]string, 0), cc: make([]string, 0), bcc: make([]string, 0),
 			headers: make(map[string]string), vars: make(jet.VarMap)}
+	} else {
+		rc = tmp.(*amMessage)
 	}
 	rc.uid = sender
 	rc.ip = ip

main.go

@@ -118,8 +118,10 @@ func setupEcho() *echo.Echo {
 	// conference group
 	commGroup.GET("/create_conf", ui.AmWrap(CreateConferenceForm))
 	commGroup.POST("/create_conf", ui.AmWrap(CreateConference))
-	commGroup.GET("/manage_conf", ui.AmWrap(ManageConferenceList))
+	commGroup.GET("/manage_conf", ui.AmWrap(ManageConferenceList), ui.ValidateConference)
+	commGroup.GET("/manage_conf/del/:confid", ui.AmWrap(ManageDeleteConference), ui.ValidateConference, ui.SetConference)
 	commGroup.GET("/conf", ui.AmWrap(Conferences), ui.ValidateConference)
+
 	confGroup := commGroup.Group("/conf/:confid", ui.ValidateConference, ui.SetConference)
 	confGroup.GET("", ui.AmWrap(Topics))
 	confGroup.GET("/new_topic", ui.AmWrap(NewTopicForm))
@@ -145,6 +147,7 @@ func setupEcho() *echo.Echo {
 	confGroup.GET("/invite", ui.AmWrap(InviteToConference))
 	confGroup.GET("/r/:topic", ui.AmWrap(ReadPosts), ui.SetTopic)
 	confGroup.POST("/r/:topic", ui.AmWrap(PostInTopic), ui.SetTopic)
+
 	opsGroup := confGroup.Group("/op/:topic", ui.SetTopic)
 	opsGroup.GET("/find", ui.AmWrap(FindPostsPageTopic))
 	opsGroup.POST("/find", ui.AmWrap(FindPostsTopic))

ui/amcontext.go

@@ -524,14 +524,17 @@ var amContextRecycleBin chan *amContext
  *     Standard Go error status.
  */
 func newContext(ctxt echo.Context) (*amContext, error) {
-	rc := freeContext.Get().(*amContext)
+	var rc *amContext
-	if rc == nil {
+	tmp := freeContext.Get()
+	if tmp == nil {
 		rc = &amContext{
 			rendervars: make(jet.VarMap),
 			frameTitle: "",
 			frameMeta:  make(map[int]map[string]string),
 			outputType: "",
 		}
+	} else {
+		rc = tmp.(*amContext)
 	}
 
 	var err error

ui/messagedefs.yaml

@@ -55,3 +55,29 @@ messagedefs:
         tone: "green"
         icon: "✗"
         text: "No, Cancel"
+  - id: "deleteConf"
+    title: "Delete Conference"
+    tone: "red"
+    destructive: true
+    message: "You are about to delete a conference!"
+    warningIcon: "💣"
+    warningLines:
+      - text: "Warning: This action cannot be undone!"
+        bold: true
+      - text: "Deleting this conference will permanently remove it and all its topics from the system."
+        bold: false
+      - text: "Hundreds or even thousands of conference posts will be lost forever."
+        bold: false
+    buttons:
+      - id: "yes"
+        link: "placeholder"
+        confirm: true
+        tone: "red"
+        icon: "✓"
+        text: "Yes, Delete It"
+      - id: "no"
+        link: "placeholder"
+        confirm: false
+        tone: "green"
+        icon: "✗"
+        text: "No, Cancel"

ui/views/manage_conflist.jet

@@ -70,7 +70,7 @@
                                     {{ end }}
                                 </td>
                                 <td class="px-4 py-3 whitespace-nowrap text-center w-12">
-                                    <a href="/TODO" class="text-2xl hover:scale-125 inline-block transition-transform" 
+                                    <a href="{{ baseUrl }}/del/{{ c.Alias }}" class="text-2xl hover:scale-125 inline-block transition-transform" 
                                         title="Delete Conference">❌</a>
                                 </td>
                                 <td class="px-4 py-3 text-sm">