From 0c55ba745b454de2be1190529d7190b94a94a77c Mon Sep 17 00:00:00 2001
From: Adam Goldsmith <adam@adamgoldsmith.name>
Date: Sun, 8 Oct 2017 18:21:24 -0400
Subject: [PATCH] Editor: Load existing input JSON if it exists

---
 js/editor.js | 21 +++++++++++++++++----
 server.js    |  3 +++
 2 files changed, 20 insertions(+), 4 deletions(-)

diff --git a/js/editor.js b/js/editor.js
index 260dacc..9c810f1 100644
--- a/js/editor.js
+++ b/js/editor.js
@@ -5,11 +5,26 @@ let deckName = window.location.pathname.split('/')[2];
 document.title = "Editor|" + deckName;
 
 window.addEventListener("load", () => {
+  // load input json
+  let xhr = new XMLHttpRequest();
+  xhr.addEventListener("load", () => {
+    // if deck already has input json, load it
+    if (xhr.status === 200) {
+      deckJSON = JSON.parse(xhr.responseText);
+      makeSVGs(deckJSON);
+    }
+  });
+  xhr.open("GET", "deck.input.json");
+  xhr.send();
+
   // deck JSON uploader
   document.querySelector('#jsonUpload').addEventListener('change', event => {
     let files = event.target.files;
     let reader = new FileReader();
-    reader.onload = handleUpload;
+    reader.onload = event => {
+      deckJSON = JSON.parse(event.target.result);
+      makeSVGs(deckJSON);
+    };
     reader.readAsText(files[0]);
   });
 
@@ -57,9 +72,7 @@ function getSVGTemplate(name, callback) {
   xhr.send();
 }
 
-function handleUpload(event) {
-  deckJSON = JSON.parse(event.target.result);
-
+function makeSVGs(deckJSON) {
   document.querySelector('#deckName').value = deckJSON.name || "";
   document.querySelector('#deckType').value = deckJSON.type || "";
 
diff --git a/server.js b/server.js
index 232716a..f9312fc 100644
--- a/server.js
+++ b/server.js
@@ -82,6 +82,9 @@ const server = http.createServer((req, res) => {
     case 'deck.json':
       sendFileJSON(res, deckName);
       break;
+    case 'deck.input.json':
+      sendFile(res, deckName + ".input.json", 'application/json');
+      break;
     case 'upload':
       handleUpload(res, req, deckName);
       break;