use jinja for messages

src/config.json

@@ -18,11 +18,11 @@
 		}
 	},
 	"RZ": {
-		"mail": "fachschaft.wiai@uni-bamberg.de",
+		"mail": "clemens.klug@uni-bamberg.de",
 		"templates": {
-			"Portsperre": "liebes RZ, Port {port} ist zu. das ist doof :(",
-			"WLAN": "hallo RZ, in Raum {raum} funkt das WLAN {wlan} nicht. das ist doof :(",
-			"test": "ich bin ein test mit einer zahl: {anzahl}"
+			"Portsperre": "liebes RZ, Port {{port}} ist zu. das ist doof :(",
+			"WLAN": "hallo RZ, in Raum {{raum}} funkt das WLAN {{wlan}} nicht. das ist doof :(",
+			"test": "ich bin ein test mit einer zahl: {{anzahl}}"
 		}
 	}
 }

src/spammer.py

@@ -4,9 +4,11 @@ from string import Formatter
 
 from flask import Flask, render_template, request
 from flask_mail import Mail, Message
-
+from jinja2 import Environment, meta, Template
 
 Placeholder = namedtuple("Placeholder", ["name", "type", "desc", "default"])
+env = Environment()
+
 
 def load_config(conf="config.json"):
 	config = json.load(open(conf))
@@ -26,15 +28,17 @@ def load_config(conf="config.json"):
 		templates = []
 		for issue_name in target["templates"]:
 			text = target["templates"][issue_name]
-			fields = [name for _, name, _, _ in Formatter().parse(text)]
+			ast = env.parse(text)
+			fields = list(meta.find_undeclared_variables(ast))
+			#fields = [name for _, name, _, _ in Formatter().parse(text)]
 			name = f"{org}: {issue_name}"
-			value = json.dumps({
+			value = {
 				"org": org,
 				"name": issue_name,
 				"mail": config[org]["mail"],
 				"text": text,
 				"placeholders": [i._asdict() for i in placeholders if i.name in fields]
-			})
+			}
 			flat.append({"name": name, "value": value})
 	return flat
 
@@ -63,18 +67,23 @@ def send():
 	if all([field in request.form for field in ("text", "sender", "target")]):
 		text = request.form["text"]
 		print("all fields present")
-		fields = [name for _, name, _, _ in Formatter().parse(text)]
+		ast = env.parse(text)
+		fields = list(meta.find_undeclared_variables(ast))
+		#fields = [name for _, name, _, _ in Formatter().parse(text)]
 		if None in fields:
 			fields.remove(None)
 		if all([field in request.form for field in fields]):
 			values = {field: request.form[field] for field in fields}
-			text = text.format(**values)
+			text = Template(text).render(**values)
 			sender = request.form["sender"]
 			recipients = [request.form["target"]]
 			msg = Message("Störungsmeldung", body=text, sender=sender, recipients=recipients)
 			print(msg)
-			if not mail.send(msg) is None:
-				return "Success!"
+			result = mail.send(msg)
+			if result is None:
+				return f"Success! ({result})"
+			else:
+				return f"Fail :( ({result})"
 		print([(field,field in request.form) for field in fields])
 		return "2"
 	print([(field,field in request.form) for field in ("text", "sender", "target")])

src/templates/index.html

@@ -9,7 +9,7 @@
 	<option selected disabled="true">---</option>
 	
         {% for issue in issues %}
-        <option value="{{issue.value}}">{{ issue.name }}</option>
+        <option value='{{issue.value|tojson}}'>{{ issue.name }}</option>
         {% endfor %}
 	</select>
 </p>