generating qr codes and serving them as images

qr.py

@@ -1,10 +1,14 @@
-from flask import Flask, Response, redirect, url_for, request, session, abort, render_template
+from flask import Flask, Response, redirect, url_for, request, session, abort, render_template, send_file
 from flask_login import LoginManager, UserMixin, login_required, login_user, logout_user, current_user
+from PIL import Image, ImageFont, ImageDraw
+from io import BytesIO
+import qrcode
 import json
-import datetime
 import re
 app = Flask(__name__)
 
+systemURL = 'http://192.168.0.11:5000/'
+
 with open('links.json', 'r') as infile:
 	links = json.load(infile)
 
@@ -23,6 +27,20 @@ def codeLink(code):
 		return None
 	return links[code]['url']
 
+def serveImage(img):
+    img_io = BytesIO()
+    img.save(img_io, 'PNG')
+    img_io.seek(0)
+    return send_file(img_io, mimetype='image/png')
+
+@app.route('/code/<code>')
+def serveCode(code):
+	code = code[:code.find('.')]
+	if codeValidation(code) is False:
+		return send_file('static/invalid.png', mimetype='image/png')
+	img = qrcode.make(systemURL + code)
+	return serveImage(img)
+
 @app.route("/edit", methods=['GET', 'POST'])
 def edit():
 	code = request.form.get("code")

readme.md

@@ -12,6 +12,7 @@ Python, and the following packages:
 * flask
 * flask-login
 * qrcode
+* pillow
 
 ##Work in progress
 The system is currently under initial development, and is **not** operational.