Added watchdog mode

main.ts

@@ -1,5 +1,5 @@
-import { Mwn } from 'npm:mwn'
-import process from "node:process";
+import { Mwn, RecentChange } from 'npm:mwn'
+import process, { title } from "node:process";
 import { parseSummary } from "./parse.ts";
 import { bucketEvents, writeSection } from "./write.ts";
 
@@ -38,24 +38,67 @@ async function fetchPages(pages: string[], bot: Mwn): Promise<VideoDescription[]
   return d.filter(v => v.status === "fulfilled").map(v => v.value)
 }
 
+function sleep(ms: number): Promise<void> {
+  return new Promise(resolve => setTimeout(resolve, ms));
+}
+
+async function watchdog(bot: Mwn, onChange: (paths: string[]) => Promise<void>) {
+  let last_change: string | undefined = undefined;
+
+
+  while (true) {
+    const { last_change: l, new_file_changes } = await queryChanges(bot, last_change);
+    last_change = l
+    if (new_file_changes.length > 0) {
+      console.log(new_file_changes.length, "changes")
+      await onChange(new_file_changes.map(v => v.title))
+    }
+    console.log(new Date(), "Heartbeat")
+    await sleep(30000);
+  }
+}
+
+async function queryChanges(bot: Mwn, last_change: string | undefined): Promise<{ last_change: string | undefined; new_file_changes: RecentChange[]; }> {
+  const d = await bot.request({
+    action: "query",
+    list: "recentchanges",
+    format: "json",
+    formatversion: 2,
+    rcprop: "title|timestamp|ids|user",
+    rctoponly: 1,
+    rcdir: 'older',
+    rcend: last_change || "2000-01-01T12:00:00Z",
+  });
+
+  const changes: RecentChange[] = d.query?.recentchanges;
+
+  const new_file_changes = changes
+    .filter(v => v.title.startsWith("File:WCS "))
+    .filter(v => last_change === undefined || new Date(v.timestamp) > new Date(last_change));
+
+  return { last_change: changes[0].timestamp, new_file_changes };
+}
 
 async function main() {
   const bot = new Mwn({
-    apiUrl: 'https://dancing.thasky.one/api.php',
+    apiUrl: process.env.URL || 'https://dancing.thasky.one/api.php',
     username: process.env.BOTNAME,
     password: process.env.BOTPW,
     userAgent: 'mwn bot',
   });
 
+  const title = 'Video Descriptions (Automated)'
+
   try {
     await bot.login();
-    // const relevantFiles = await getWorkshopVideos(bot)
-    // const d = await fetchPages(relevantFiles, bot)
-    // await Deno.writeTextFile("./descriptions.json", JSON.stringify(d));
-    const d = JSON.parse(await Deno.readTextFile('./descriptions.json'));
-    const t = writeSection(bucketEvents(d))
-    const response = await bot.save('Video Description (Automated)', "{{TOC|limit=3}}\n\n" + t, 'Generated descriptions');
-    console.log(response)
+    await watchdog(bot, async (paths) => {
+      const relevantFiles = await getWorkshopVideos(bot)
+      const d = await fetchPages(relevantFiles, bot)
+      const t = writeSection(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)
+    })
+
 
   } catch (error) {
     console.error('Error:', error);

run.sh

@@ -1 +1 @@
-deno run --env-file=.env --allow-read=./descriptions.json --allow-net=dancing.thasky.one:443 -E main.ts
+deno run --env-file=.env --allow-read=./descriptions.json  --allow-net=dancing.thasky.one:443 -E main.ts

write.ts

@@ -10,11 +10,15 @@ Level: ${video.level}
 
 [[${video.path}|left|400px|thumb|${video.title}]]
 
+<div style="float:left">
 ==== Shown Patterns ====
 ${video.patterns}
 
 ==== Notes ====
-${video.notes}`;
+${video.notes}
+</div>
+
+<br clear=all>`;
 }
 
 export function writeSection(events: VideoDescription[][]): string {
@@ -26,7 +30,7 @@ export function writeSection(events: VideoDescription[][]): string {
         const event_date = event_name.match(/\d{2}|20\d{2}/) ? "" : new Date(token.date).getFullYear().toString()
 
         let r = `== ${event_name} ${event_date} ==\n`
-        r += `${v.length} Videos\n`
+        r += `${v.length} Video${v.length <= 1 ? "" : "s"}\n`
         r += v.map(video => singleVideoDescription(video)).join("\n\n")
         return r
     }).join("\n\n\n")
@@ -46,7 +50,7 @@ export function bucketEvents(events: VideoDescription[]): VideoDescription[][] {
     Object.values(buckets)
         .forEach(b =>
             b.sort((a, b) =>
-                new Date(b.date).getTime() - new Date(a.date).getTime()))
+                new Date(a.date).getTime() - new Date(b.date).getTime()))
 
-    return Object.values(buckets)
+    return Object.values(buckets).sort((a, b) => new Date(a[0].date).getTime() - new Date(b[0].date).getTime())
 }