feat: Custom schedule rules

cron-runner.js

@@ -1,8 +1,9 @@
 const cron = require('node-cron');
 const { exec } = require('child_process');
+const { scheduleRules, toMinutes } = require('./scheduleRules');
 
 function runScraper() {
-  console.log('Running scraper...');
+  console.log(`Running scraper at ${new Date().toLocaleString()}...`);
   exec('node scrape/scraper.js', (error, stdout, stderr) => {
     if (error) {
       console.error(`Scraper error: ${error.message}`);
@@ -13,10 +14,30 @@ function runScraper() {
   });
 }
 
+function createSchedules(rules) {
+  rules.forEach(rule => {
+    const startMin = toMinutes(rule.start);
+    const endMin = toMinutes(rule.end === "0:00" ? "24:00" : rule.end);
+    const times = [];
+
+    const adjustedEnd = endMin <= startMin ? endMin + 1440 : endMin;
+    for (let t = startMin; t < adjustedEnd; t += rule.interval) {
+      const h = Math.floor(t % 1440 / 60);
+      const m = t % 60;
+      times.push({ h, m });
+    }
+
+    times.forEach(({ h, m }) => {
+      const cronExpr = `${m} ${h} * * *`;
+      cron.schedule(cronExpr, runScraper);
+      console.log(`Scheduled: ${cronExpr}`);
+    });
+  });
+}
+
 // Run immediately at start
 runScraper();
 
-// Schedule to run every 10 minutes
-cron.schedule('*/10 * * * *', runScraper);
+createSchedules(scheduleRules);
 
-console.log('Cron scheduler started. Scraper will run every 10 minutes.');
+console.log('Cron scheduler started with custom intervals.');

package-lock.json

@@ -1,11 +1,11 @@
 {
-  "name": "tablescraper",
+  "name": "jecnarozvrh",
   "version": "1.0.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
-      "name": "tablescraper",
+      "name": "jecnarozvrh",
       "version": "1.0.0",
       "license": "ISC",
       "dependencies": {

package.json

@@ -1,5 +1,5 @@
 {
-  "name": "tablescraper",
+  "name": "jecnarozvrh",
   "version": "1.0.0",
   "description": "",
   "license": "ISC",
@@ -7,7 +7,6 @@
   "type": "commonjs",
   "main": "server.js",
   "scripts": {
-    "test": "echo \"Error: no test specified\" && exit 1",
     "start": "concurrently \"node server.js\" \"node cron-runner.js\""
   },
   "dependencies": {

scheduleRules.js

@@ -0,0 +1,43 @@
+// Rules: start and end in 24h format, interval in minutes
+const scheduleRules = [
+  { start: "0:00",  end: "3:00",  interval: 180 },
+  { start: "3:00",  end: "4:00",  interval: 60 },
+  { start: "5:00",  end: "6:00",  interval: 30 },
+  { start: "6:00",  end: "7:30",  interval: 15 },
+  { start: "7:30",  end: "16:00", interval: 5 },
+  { start: "16:00", end: "19:00", interval: 60 },
+  { start: "19:00", end: "0:00",  interval: 180 }
+];
+
+function toMinutes(timeStr) {
+  const [h, m] = timeStr.split(":").map(Number);
+  return h * 60 + (m || 0);
+}
+
+function getCurrentInterval(date = new Date()) {
+  const nowMinutes = date.getHours() * 60 + date.getMinutes();
+
+  for (const rule of scheduleRules) {
+    let startMin = toMinutes(rule.start);
+    let endMin   = toMinutes(rule.end === "0:00" ? "24:00" : rule.end);
+
+    // Handle wrap-around midnight
+    if (endMin <= startMin) {
+      if (nowMinutes >= startMin || nowMinutes < endMin) {
+        return rule.interval;
+      }
+    } else {
+      if (nowMinutes >= startMin && nowMinutes < endMin) {
+        return rule.interval;
+      }
+    }
+  }
+
+  return null;
+}
+
+module.exports = {
+  scheduleRules,
+  getCurrentInterval,
+  toMinutes
+};

server.js

@@ -2,11 +2,19 @@ const express = require("express");
 const path = require("path");
 const app = express();
 const fs = require("fs/promises");
+const { getCurrentInterval } = require("./scheduleRules");
 
 const PORT = process.env.PORT || 3000;
 
-app.get('/', (_, res) => {
-  res.sendFile(path.join(__dirname, "db", "current.json"));
+app.get('/', async (_, res) => {
+  const dataStr = fs.readFile(path.join(__dirname, "db", "current.json"));
+  const data = JSON.parse(dataStr);
+
+  data["status"] = {
+    currentUpdateSchedule: getCurrentInterval(),
+  };
+
+  res.json(data);
 });
 
 app.get("/status", async (_, res) => {
@@ -14,9 +22,9 @@ app.get("/status", async (_, res) => {
   const data = JSON.parse(dataStr);
 
   if (data.working) {
-    res.json({working: true})
+    res.json({ working: true })
   } else {
-    res.json({working: data.working, message: data.message})
+    res.json({ working: data.working, message: data.message })
   }
 })