updating code snippets from remote url is working

Author: bahmutov

update-code-snippets.js

@@ -3,15 +3,13 @@ var snippets = JSON.parse(localStorage.scriptSnippets);
 console.log('I have', snippets.length, 'code snippets');
 console.table(snippets);
 
+// read code snippets from this repo
 var repo = 'https://rawgit.com/bahmutov/code-snippets/master/';
-var filename = 'ng-idle-apply-timing.js';
 
 function fetch(url) {
   return new Promise(function (resolve, reject) {
     var request = new XMLHttpRequest();
     request.open('GET', url, true);
-    // request.setRequestHeader('Access-Control-Allow-Origin', '*');
-    // request.setRequestHeader('Access-Control-Allow-Headers', '*');
 
     request.onload = function () {
       if (request.status >= 200 && request.status < 400) {
@@ -25,17 +23,45 @@ function fetch(url) {
       reject(err);
     };
 
-
     request.send();
+  });
+}
+
+var updated = [];
+
+function updateSnippet(k, id, filename) {
+  return fetch(repo + filename)
+    .then(function (source) {
+      console.log('fetched new source for', id, filename);
+      // console.log(source);
+      updated.push({
+        index: k,
+        id: id,
+        content: source,
+        name: filename
+      });
+    }, function () {
+      console.error('cannot find remote for', filename);
+    });
+}
 
-    // 'Content-Type': 'text/javascript; charset=utf-8'
+function chainSnippet(chain, snippet, k) {
+  return chain.then(function () {
+    return updateSnippet(k, snippet.id, snippet.name);
   });
 }
 
-fetch(repo + filename)
-  .then(function (source) {
-    console.log('fetched new source for', filename);
-    console.log(source);
-  }, function (err) {
-    throw err;
+var allChecked = snippets.reduce(chainSnippet, Promise.resolve());
+allChecked.then(function () {
+  console.log('fetched', updated.length, 'snippets');
+  updated.forEach(function (update) {
+    var snippet = snippets[update.index];
+    console.assert(update.name === snippet.name,
+      'name mismatch for update', update, snippet);
+    snippet.content = update.content;
   });
+  if (updated.length) {
+    localStorage.scriptSnippets = JSON.stringify(snippets);
+  }
+  console.table(updated);
+});