Add proper JSON headers

app.py

@@ -1,4 +1,4 @@
-from flask import Flask, request, redirect, url_for, make_response, render_template, Markup, send_from_directory, send_file
+from flask import Flask, request, redirect, url_for, make_response, render_template, Markup, send_from_directory, send_file, jsonify, Response
 from flask_redis import FlaskRedis
 import json, abp, markdown
 from pprint import pprint
@@ -35,12 +35,12 @@ def graph(uuid):
         return "Posted {} bytes OK".format(len(data))
 
     elif redis.exists(uuid):
-        return redis.get(uuid)
+        return jsonify(json.loads(redis.get(uuid)))
     else:
         g = abp.GraphState()
-        data = json.dumps(g.to_json(stringify=True))
-        redis.setex(uuid, DAY, data)
-        return data
+        data = g.to_json(stringify=True)
+        redis.setex(uuid, DAY, json.dumps(data))
+        return jsonify(data)
 
 @app.route("/<uuid>/edit", methods=["POST"])
 def edit(uuid):
@@ -85,3 +85,10 @@ def doc():
     body = Markup(markdown.markdown(render_template("doc.md"), extensions=["markdown.extensions.codehilite"]))
     return render_template("boilerplate.html", body=body)
 
+
+@app.route("/<uuid>/download")
+def download(uuid):
+    return Response(redis.get(uuid), 
+        mimetype='application/json',
+        headers={'Content-Disposition':'attachment;filename=graph.json'})    
+

templates/index.html

@@ -45,6 +45,7 @@
     <ul>
         <li><a onclick="editor.clear()">Clear</a></li>
         <li><a onclick="editor.raussendorf()">Raussendorf</a></li>
+        <li><a href="/{{uuid}}/download">Download</a></li>
         <li><a href="/doc">Help</a></li>
     </ul>
 </div>