ntxinh · July 11, 2025 14:10 · Jul 9, 2025
diff --git a/main.gs b/main.gs
@@ -0,0 +1,73 @@
+function init() {  
+  if (ScriptApp.getProjectTriggers().length == 0) {
+    ScriptApp.newTrigger("websiteMonitor").timeBased().everyMinutes(0.1).create();
+  }  
+}
+
+function websiteMonitor() { 
+  var sheet = SpreadsheetApp.getActiveSpreadsheet().getSheetByName("Config");
+  var lastRow = sheet.getLastRow();
+  Logger.log('last'+lastRow);
+  var configuration = sheet.getRange(2, 1, lastRow-1, 3);
+  var config_vars = configuration.getValues();
+  var response, code, msg, status;  
+  var time  = new Date(); 
+  eval(UrlFetchApp.fetch('https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.29.4/moment.min.js').getContentText());
+
+  for (var i in config_vars) {
+    var emails = config_vars[i][1].replace(/\s/g, "").split(","); 
+    var url = config_vars[i][0];
+
+    try {    
+      response = UrlFetchApp.fetch(url);
+      code = response.getResponseCode();
+    } catch(error) {
+      // If URLFetchApp fails, the site is probably down
+      code = 404;
+    }
+
+    if (parseInt(code) > 200) {
+      msg = url+" is down\nChúc các sếp may mắn lần sau";
+      status = "DOWN";
+      if (PropertiesService.getScriptProperties().getProperty(url) ) {
+        // Still down
+        // logSiteChanges(url, 'DOWN_STILL');
+      } else {
+        // Just gone down
+        PropertiesService.getScriptProperties().setProperty(url, time);
+        logSiteChanges(url, 'DOWN');
+
+        for (var e in emails) {
+          MailApp.sendEmail(emails[e], msg, msg);
+        }
+      }
+    } else {
+      msg = url+" is up";
+      status = "UP";
+      if (PropertiesService.getScriptProperties().getProperty(url) ) {
+        var time_down = moment(PropertiesService.getScriptProperties().getProperty(url)); 
+        var duration = moment.duration(moment().diff(time_down)).asMinutes();
+
+        logSiteChanges(url, 'UP after '+duration+' minutes'); 
+        msg = url+" is UP after "+duration+" minutes\nNhanh nhanh vào đăng kí môn nào";
+
+        logSiteChanges(url, 'UP after '+duration+' minutes'); 
+
+        // No longer down 
+        PropertiesService.getScriptProperties().deleteProperty(url);
+
+        for (var e in emails) {
+          MailApp.sendEmail(emails[e], msg, msg);
+        }
+      } 
+    }
+    sheet.getRange(parseInt(i)+2, 3).setValue(status+": "+url);
+
+  }
+}
+
+function logSiteChanges(url, status) {
+  var time  = new Date();
+  var sheet = SpreadsheetApp.getActiveSpreadsheet().getSheetByName("Log");
+  sheet.appendRow([time, url, status]);
+}