From c8f1415b6d1c45bd73d8a14325a1bd9a1c0fd289 Mon Sep 17 00:00:00 2001
From: Harsh Vakharia <harshjv@gmail.com>
Date: Thu, 13 Oct 2016 20:50:41 +0530
Subject: [PATCH] Check stat bar before inserting li node. Fixes #12

---
 src/inject.js | 49 +++++++++++++++++++++++++++----------------------
 1 file changed, 27 insertions(+), 22 deletions(-)

diff --git a/src/inject.js b/src/inject.js
index 5362e5d..37ae9f3 100755
--- a/src/inject.js
+++ b/src/inject.js
@@ -1,6 +1,7 @@
 /* global fetch, Request, Headers */
 
 const API = 'https://api.github.com/repos/'
+const LI_TAG_ID = 'github-repo-size'
 
 function isTree (uri) {
   var repoURI = uri.split('/')
@@ -50,7 +51,7 @@ function getHumanReadableSize (size) {
 
 function getSizeHTML (size) {
   const humanReadableSize = getHumanReadableSizeObject(size)
-  return '<li>' +
+  return '<li id="' + LI_TAG_ID + '">' +
     '<a>' +
     '<svg class="octicon octicon-database" aria-hidden="true" height="16" version="1.1" viewBox="0 0 12 16" width="12">' +
     '<path d="M6 15c-3.31 0-6-.9-6-2v-2c0-.17.09-.34.21-.5.67.86 3 1.5 5.79 1.5s5.12-.64 5.79-1.5c.13.16.21.33.21.5v2c0 1.1-2.69 2-6 2zm0-4c-3.31 0-6-.9-6-2V7c0-.11.04-.21.09-.31.03-.06.07-.13.12-.19C.88 7.36 3.21 8 6 8s5.12-.64 5.79-1.5c.05.06.09.13.12.19.05.1.09.21.09.31v2c0 1.1-2.69 2-6 2zm0-4c-3.31 0-6-.9-6-2V3c0-1.1 2.69-2 6-2s6 .9 6 2v2c0 1.1-2.69 2-6 2zm0-5c-2.21 0-4 .45-4 1s1.79 1 4 1 4-.45 4-1-1.79-1-4-1z"></path>' +
@@ -102,8 +103,10 @@ function checkForRepoPage () {
 
   if (isTree(repoURI)) {
     var ns = document.querySelector('ul.numbers-summary')
+    var liElem = document.getElementById(LI_TAG_ID)
+    var tdElems = document.querySelector('span.github-repo-size-td')
 
-    if (ns) {
+    if (ns && !liElem) {
       getAPIData(getRepoInfoURI(repoURI), function (data) {
         if (data && data.size) {
           ns.insertAdjacentHTML('beforeend', getSizeHTML(data.size * 1024))
@@ -111,34 +114,36 @@ function checkForRepoPage () {
       })
     }
 
-    getAPIData(getRepoContentURI(repoURI), function (data) {
-      var sizeArray = {}
+    if (!tdElems) {
+      getAPIData(getRepoContentURI(repoURI), function (data) {
+        var sizeArray = {}
 
-      var upTree = document.querySelector('div.file-wrap > table > tbody > tr.up-tree > td > a.js-navigation-open')
+        var upTree = document.querySelector('div.file-wrap > table > tbody > tr.up-tree > td > a.js-navigation-open')
 
-      if (upTree) {
-        upTree.parentNode.parentNode.appendChild(document.createElement('td'))
-      }
+        if (upTree) {
+          upTree.parentNode.parentNode.appendChild(document.createElement('td'))
+        }
 
-      for (var item of data) {
-        sizeArray[item.name] = item.type !== 'dir' ? item.size : null
-      }
+        for (var item of data) {
+          sizeArray[item.name] = item.type !== 'dir' ? item.size : null
+        }
 
-      var contents = document.querySelectorAll('div.file-wrap > table > tbody:last-child tr > td.content > span > a')
-      var ageForReference = document.querySelectorAll('div.file-wrap > table > tbody:last-child tr > td.age')
+        var contents = document.querySelectorAll('div.file-wrap > table > tbody:last-child tr > td.content > span > a')
+        var ageForReference = document.querySelectorAll('div.file-wrap > table > tbody:last-child tr > td.age')
 
-      var i = 0
+        var i = 0
 
-      for (var o of contents) {
-        var t = sizeArray[getFileName(o.text)]
+        for (var o of contents) {
+          var t = sizeArray[getFileName(o.text)]
 
-        var td = document.createElement('td')
-        td.className = 'age'
-        td.innerHTML = '<span class="css-truncate css-truncate-target">' + getHumanReadableSize(t) + '</span>'
+          var td = document.createElement('td')
+          td.className = 'age'
+          td.innerHTML = '<span class="css-truncate css-truncate-target github-repo-size-td">' + getHumanReadableSize(t) + '</span>'
 
-        o.parentNode.parentNode.parentNode.insertBefore(td, ageForReference[i++])
-      }
-    })
+          o.parentNode.parentNode.parentNode.insertBefore(td, ageForReference[i++])
+        }
+      })
+    }
   }
 }