From 9da4f4a3aee7d1c13fc24b1384bb4e244d2b96a7 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Fr=C3=A9d=C3=A9ric=20P=C3=A9ters?= <fpeters@entrouvert.com>
Date: Wed, 26 Jul 2017 08:32:18 +0200
Subject: [PATCH] phone: keep track of failed ajax calls and reload if too many
 (#17793)

---
 welco/static/js/welco.js | 20 ++++++++++++++++++--
 1 file changed, 18 insertions(+), 2 deletions(-)

diff --git a/welco/static/js/welco.js b/welco/static/js/welco.js
index 02c3229..9ac903d 100644
--- a/welco/static/js/welco.js
+++ b/welco/static/js/welco.js
@@ -527,17 +527,31 @@ $(function() {
   });
 
   if ($('.source-phone').length) {
+      var failed_ajax_calls = 0;
+
+      function handle_ajax_error() {
+        failed_ajax_calls += 1;
+        if (failed_ajax_calls == 10) {
+          window.location.reload();
+        }
+      }
+
       function check_active_call() {
         var active_call_url = $('[data-active-call-url]').data('active-call-url');
         $.ajax({url: active_call_url,
                 dataType: 'json',
                 success: function(response) {
+                    failed_ajax_calls = 0;
                     if (response.active === false) {
                       $('<span class="done"> (terminé)</span>').appendTo($('div.phonecall.active h1'));
                       window.setTimeout(check_calls, 1000);
                     } else {
                       window.setTimeout(check_active_call, 5000);
                     }
+                },
+                error: function() {
+                    handle_ajax_error();
+                    window.setTimeout(check_active_call, 5000 + failed_ajax_calls * 1000);
                 }
         });
       }
@@ -550,6 +564,7 @@ $(function() {
               $.ajax({url: current_calls_url,
                       dataType: 'json',
                       success: function(response) {
+                          failed_ajax_calls = 0;
                           if (response.data.calls.length != 0) {
                               /* got a call */
                               var caller = response.data.calls[0].caller;
@@ -566,8 +581,9 @@ $(function() {
                           }
                           window.setTimeout(check_calls, 1000);
                       },
-                      error: function() {
-                          window.setTimeout(check_calls, 1000);
+                      error: function(error) {
+                          handle_ajax_error();
+                          window.setTimeout(check_calls, 1000 + failed_ajax_calls * 1000);
                       }
               });
           }