Add schedule debug command

src/Scheduler.ts

@@ -185,6 +185,14 @@ export class Scheduler {
         return Object.values(this.pending);
     }
 
+    /**
+     * Return a list of completed task IDs.
+     */
+    public inspectCompleted(): string[] {
+        // slice() is just to clone the array to prevent mutations
+        return this.completedIds.slice();
+    }
+
     private async persistProgress() {
         const completedIds = this.completedIds.slice().reverse().slice(0, KEEP_LAST_TASKS).reverse();
         await this.client.setAccountData(ACD_SCHEDULER, {

src/commands/HelpCommand.ts

@@ -42,6 +42,10 @@ export class HelpCommand implements ICommand {
             "!conference run <aud>                                     - Runs the schedule in the given auditorium. If 'all' is used,\n" +
             "                                                            then all auditoriums will be run.\n" +
             "!conference stop                                          - Halts all scheduling, resetting the bot back to no watched auditoriums.\n" +
+            "!conference status|refresh                                - Refreshes the schedule source and then displays the status of the conference. MAY NOT REFRESH THE SCHEDULER, BEWARE.\n" +
+            "!conference schedule view                                 - Shows upcoming scheduler tasks.\n" +
+            "!conference schedule debug                                - Shows upcoming scheduler tasks as well as a list of stored completed task IDs.\n" +
+            "!conference schedule reset                                - Resets the scheduler.\n" +
             "</code></pre>" +
             "<h4>People management:</h4>" +
             "<pre><code>" +

src/commands/ScheduleCommand.ts

@@ -30,30 +30,58 @@ export class ScheduleCommand implements ICommand {
             await this.scheduler.reset();
             await this.client.sendNotice(roomId, "Schedule processing has been reset.");
         } else if (args[0] === 'view') {
-            const upcoming = sortTasks(this.scheduler.inspect());
-            let html = "Upcoming tasks:<ul>";
-            for (const task of upcoming) {
-                const hasTalkRoom = this.conference.getTalk(task.talk.id) !== null;
-                const taskStart = moment(getStartTime(task));
-                const formattedTimestamp = taskStart.format("YYYY-MM-DD HH:mm:ss [UTC]ZZ");
-
-                if (html.length > 20000) {
-                    // chunk up the message so we don't fail to send one very large event.
-                    html += "</ul>";
-                    await this.client.sendHtmlNotice(roomId, html);
-                    html = "…<ul>";
-                }
-
-                const hasRoomIndicator = hasTalkRoom ? '(has talk room)' : '(no talk room)';
-                html += `<li>${formattedTimestamp}: <b>${task.type} on ${task.talk.title} ${hasRoomIndicator}</b> (<code>${task.id}</code>) ${taskStart.fromNow()}</li>`;
-            }
-            html += "</ul>";
-            await this.client.sendHtmlNotice(roomId, html);
+            await this.printUpcomingTasks(roomId);
+        } else if (args[0] === 'debug') {
+            await this.printUpcomingTasks(roomId);
+            await this.printCompletedTasks(roomId);
         } else if (args[0] === 'execute') {
             await this.scheduler.execute(args[1]);
             await this.client.unstableApis.addReactionToEvent(roomId, event['event_id'], '✅');
         } else {
             await this.client.sendNotice(roomId, "Unknown schedule command.");
         }
     }
+
+    private async printUpcomingTasks(roomId: string) {
+        const upcoming = sortTasks(this.scheduler.inspect());
+        let html = "Upcoming tasks:<ul>";
+        for (const task of upcoming) {
+            const hasTalkRoom = this.conference.getTalk(task.talk.id) !== undefined;
+            const taskStart = moment(getStartTime(task));
+            const formattedTimestamp = taskStart.format("YYYY-MM-DD HH:mm:ss [UTC]ZZ");
+
+            if (html.length > 20000) {
+                // chunk up the message so we don't fail to send one very large event.
+                html += "</ul>";
+                await this.client.sendHtmlNotice(roomId, html);
+                html = "…<ul>";
+            }
+
+            const hasRoomIndicator = hasTalkRoom ? 'has talk room' : 'no talk room';
+            html += `<li>${formattedTimestamp}: <b>${task.type} on ${task.talk.title}</b> (<code>${task.id}</code>, ${hasRoomIndicator}) ${taskStart.fromNow()}</li>`;
+        }
+        html += "</ul>";
+        await this.client.sendHtmlNotice(roomId, html);
+    }
+
+    private async printCompletedTasks(roomId: string) {
+        const completed = this.scheduler.inspectCompleted();
+        let html = "Completed tasks:<ul>";
+        completed.sort();
+
+        for (const taskId of completed) {
+            if (html.length > 20000) {
+                // chunk up the message so we don't fail to send one very large event.
+                html += "</ul>";
+                await this.client.sendHtmlNotice(roomId, html);
+                html = "…<ul>";
+            }
+
+            html += `<li>${taskId}</li>`;
+        }
+
+        html += "</ul>";
+
+        await this.client.sendHtmlNotice(roomId, html);
+    }
 }