Improved layout, added warnings to result page

main.ts

@@ -1,7 +1,7 @@
 import { Mwn, RecentChange } from 'npm:mwn'
 import process, { title } from "node:process";
 import { parseSummary } from "./parse.ts";
-import { bucketEvents, writeSection } from "./write.ts";
+import { bucketEvents, writeSections } from "./write.ts";
 
 async function getWorkshopVideos(bot: Mwn): Promise<string[]> {
   const response = await bot.request({
@@ -29,13 +29,20 @@ export interface VideoDescription {
   notes: string
   path: string
   title: string
+  nags: string[]
 }
 
 async function fetchPages(pages: string[], bot: Mwn): Promise<VideoDescription[]> {
   const d = await Promise.allSettled(pages.map(async (v) =>
     parseSummary(await new bot.Page(v).text(), v)
   ))
+
+  d.map((v, index) => ({ r: v, source: pages[index] })).filter((v): v is { source: string, r: PromiseRejectedResult } => v.r.status === "rejected").forEach(
+    v => console.warn(`Error parsing ${v.source}: ${v.r.reason}`
+    ))
+
   return d.filter(v => v.status === "fulfilled").map(v => v.value)
+
 }
 
 function sleep(ms: number): Promise<void> {
@@ -45,6 +52,16 @@ function sleep(ms: number): Promise<void> {
 async function watchdog(bot: Mwn, onChange: (paths: string[]) => Promise<void>) {
   let last_change: string | undefined = undefined;
 
+  let heartbeat_count = 0;
+  const heartbeat_count_max = 60;
+
+  const heartbeat = () => {
+    heartbeat_count += 1
+    if (heartbeat_count >= heartbeat_count_max) {
+      heartbeat_count = 0;
+      console.log(new Date(), "Heartbeat")
+    }
+  }
 
   while (true) {
     const { last_change: l, new_file_changes } = await queryChanges(bot, last_change);
@@ -53,7 +70,7 @@ async function watchdog(bot: Mwn, onChange: (paths: string[]) => Promise<void>)
       console.log(new_file_changes.length, "changes")
       await onChange(new_file_changes.map(v => v.title))
     }
-    console.log(new Date(), "Heartbeat")
+    heartbeat()
     await sleep(30000);
   }
 }
@@ -94,7 +111,7 @@ async function main() {
     await watchdog(bot, async (paths) => {
       const relevantFiles = await getWorkshopVideos(bot)
       const d = await fetchPages(relevantFiles, bot)
-      const t = writeSection(bucketEvents(d))
+      const t = writeSections(bucketEvents(d))
       const response = await bot.save(title, "{{TOC|limit=3}}\n\n" + t, 'Triggered by changes to ' + paths.map(v => "[[" + v + "]]").join(", "));
       console.log(response)
     })

parse.ts

@@ -1,21 +1,22 @@
 import { Mwn } from "mwn";
 import { VideoDescription } from "./main.ts";
 
-function parseTemplate(description: string): Record<string, string> {
+function parseTemplate(description: string): { warnings: string[] } & { [k: string]: string } {
 
     const u = new (new Mwn().Wikitext)(description)
     const r = u.parseTemplates({
         namePredicate: (name) => name === "DanceWorkshopDescription",
     })
+    const warnings = []
     if (r.length < 1) {
         throw new Error("Could not find DanceWorkshopDescription")
     }
     if (r.length > 1) {
-        console.warn("More than one DanceWorkshopDescription template found")
+        warnings.push("More than one DanceWorkshopDescription template found")
     }
     const p = r[0]
     const properties = p.parameters.map(v => ({ [v.name]: v.value }))
-    return Object.assign({}, ...properties)
+    return Object.assign({}, { warnings }, ...properties)
 }
 
 function parseBlock(header: string, text: string): string {
@@ -35,9 +36,10 @@ export function parseSummary(description: string, name: string): VideoDescriptio
     const properties = parseTemplate(description)
 
     const b: Partial<VideoDescription> = {};
+    b.nags = properties.warnings
 
     if (Object.hasOwn(properties, 'teachers')) {
-        console.warn(`Page ${name} has old template usage [contains 'teachers' key]`)
+        b.nags.push(`Contains 'teachers' key instead of 'leader'/'follower'`)
         const t = properties['teachers'].split('&').map(item => item.trim());
         b.teachers = t
     } else {
@@ -52,15 +54,25 @@ export function parseSummary(description: string, name: string): VideoDescriptio
 
 
     if (!Object.hasOwn(properties, 'patterns')) {
-        console.warn(`Page ${name} has old template usage [no 'patterns' key]`)
+        b.nags.push(`No 'patterns' key`)
-        b.patterns = parseBlock("Shown Patterns", description)
+        try {
+            b.patterns = parseBlock("Shown Patterns", description)
+        } catch (e) {
+            b.nags.push("Shown Patterns: " + e)
+            b.patterns = ""
+        }
     } else {
         b.patterns = properties['patterns']
     }
 
     if (!Object.hasOwn(properties, 'notes')) {
-        console.warn(`Page ${name} has old template usage [no 'notes' key]`)
+        b.nags.push(`No 'notes' key`)
-        b.notes = parseBlock("Notes", description)
+        try {
+            b.notes = parseBlock("Notes", description)
+        } catch (e) {
+            b.nags.push("Notes: " + e)
+            b.notes = ""
+        }
     } else {
         b.notes = properties['notes']
     }

write.ts

@@ -3,8 +3,9 @@ import { VideoDescription } from "./main.ts";
 export function singleVideoDescription(video: VideoDescription): string {
     const teachersList = video.teachers.map(v => "[[" + v + "]]").join(" & ");
 
+    const nagElement = video.nags.length > 0 ? `<span title="${video.nags.join("&#010;")}">🔴</span>` : "";
     return `=== ${video.title} ===
-Date:{{#time: Y-m-d (D) | ${video.date}}}<br>
+Date: {{#time: Y-m-d (D) | ${video.date}}} ${nagElement}<br>
 Teachers: ${teachersList}<br>
 Level: ${video.level}
 
@@ -21,13 +22,14 @@ ${video.notes}
 <br clear=all>`;
 }
 
-export function writeSection(events: VideoDescription[][]): string {
+export function writeSections(events: VideoDescription[][]): string {
     return events.map(v => {
         const token = v[0]
         const event_name = token.event === token.location ? token.event : token.event + " " + token.location
 
         // FIXME: This will break with videos in 75 years
-        const event_date = event_name.match(/\d{2}|20\d{2}/) ? "" : new Date(token.date).getFullYear().toString()
+        const event_contains_year = event_name.match(/\d{2}|20\d{2}/) === null
+        const event_date = event_contains_year ? "" : new Date(token.date).getFullYear().toString()
 
         let r = `== ${event_name} ${event_date} ==\n`
         r += `${v.length} Video${v.length <= 1 ? "" : "s"}\n`