misc: add arsched

src/modules/misc.js

@@ -256,3 +256,73 @@ vote.callback = async function (msg, line) {
   };
 };
 hf.registerCommand(vote);
+
+const DAYS = ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"];
+const arsched = new Command("arsched");
+arsched.category = CATEGORY;
+arsched.helpText = "aNONradio.net schedule";
+arsched.callback = async function (msg, line) {
+  const now = new Date();
+
+  const schedule = await fetch("https://anonradio.net/schedule/").then((res) =>
+    res.text()
+  );
+
+  let lines = schedule.split("\n");
+  lines = lines.slice(4, lines.length - 2);
+
+  const parsedLines = [];
+
+  for (const line of lines) {
+    const [_, time, id, name] = line.match(/^(.{3,4} .{4})\s+(.+?) {2}(.+?)$/);
+
+    const tmp = time.split(" ");
+    const day = tmp[0];
+    let hour = tmp[1];
+    const currentDay = now.getUTCDay();
+    const targetDay = DAYS.indexOf(day);
+    const delta = (targetDay + 7 - currentDay) % 7;
+
+    let currentYear = now.getUTCFullYear();
+    const currentMonth = now.getUTCMonth();
+    const currentDateDay = now.getUTCDate();
+    let targetMonth = currentMonth;
+    const lastDay = new Date(currentYear, currentMonth, 0).getDate();
+    let targetDateDay = currentDateDay + delta;
+    if (targetDateDay > lastDay) {
+      targetMonth = currentMonth === 12 ? 1 : currentMonth + 1;
+      targetDateDay = 1;
+      if (currentMonth === 12) currentYear++;
+    }
+
+    hour = hour.slice(0, 2) + ":" + hour.slice(-2);
+
+    const timestamp =
+      Date.parse(
+        `${DAYS[targetDay]}, ${currentYear}-${targetMonth}-${targetDateDay} ${hour} UTC`
+      ) / 1000;
+
+    parsedLines.push({timestamp, id, name});
+  }
+
+  const liveNow = parsedLines.splice(0, 1)[0];
+  liveNow.name = liveNow.name.replace("  <- Live NOW", "");
+
+  return {
+    embeds: [
+      {
+        title: "Click to listen",
+        url: "http://anonradio.net:8000/anonradio",
+        author: {
+          name: `LIVE NOW: ${liveNow.name} (\`${liveNow.id}\`)`,
+        },
+        fields: parsedLines.map((line) => ({
+          inline: true,
+          name: `${line.name} (\`${line.id}\`)`,
+          value: `<t:${line.timestamp}:R>`,
+        })),
+      },
+    ],
+  };
+};
+hf.registerCommand(arsched);