Add timezone property

You can optionally replace utcOffset with a valid timezone (e.g.
'Europe/Berlin'), so we can take care of the actual utcOffset on Nov 18.

You need to specify at least one, utcOffset or timezone.

events/event_schema.json

@@ -15,9 +15,14 @@
       "type": "object",
       "properties": {
         "utcOffset": {
-          "description": "The UTC Timezone the event will take place in (e.g. UTC+1 for Berlin with DST considered)",
+          "description": "The UTC Timezone the event will take place in (e.g. UTC+2 on Nov 18, 2017 for Berlin with DST considered)",
           "type": "number"
         },
+        "timezone": {
+          "description": "The Timezone as a String, verified by https://momentjs.com/timezone/ to be an actual timezone",
+          "type": "string",
+          "format": "timezone"
+        },
         "city": { "type": "string" },
         "country": { "type": "string" },
         "coordinates": {
@@ -30,7 +35,11 @@
           "required": ["latitude", "longitude"]
         }
       },
-      "required": ["utcOffset", "country", "city"]
+      "required": ["country", "city"],
+      "anyOf": [
+        { "required": ["utcOffset"] },
+        { "required": ["timezone"] }
+      ]
     },
     "moderators": {
       "type": "array",

package.json

@@ -12,6 +12,7 @@
     "glob": "^7.1.1",
     "jsonschema": "^1.1.1",
     "mocha": "^3.2.0",
+    "moment-timezone": "^0.5.13",
     "yamljs": "^0.2.8"
   }
 }

test/validate_events.test.js

@@ -6,10 +6,22 @@ const YAML = require('yamljs');
 
 const schema = require('../events/event_schema.json');
 const JsonValidator = require('jsonschema').Validator;
+const moment = require('moment-timezone');
+
+JsonValidator.prototype.customFormats.timezone = (tz) => {
+  if(typeof tz === 'undefined') {
+    return true;
+  }
+  if(typeof tz === 'string') {
+    return !!moment.tz.zone(tz);
+  }
+  return false;
+}
 
 const validate = input => {
   const result = (new JsonValidator).validate(input, schema);
   if(result.errors.length > 0) {
+    console.log(result.errors, JSON.stringify(result.errors));
     throw new Error(result.errors);
   }
 }

yarn.lock

@@ -310,6 +310,16 @@ mocha@^3.2.0:
     mkdirp "0.5.1"
     supports-color "3.1.2"
 
+moment-timezone@^0.5.13:
+  version "0.5.13"
+  resolved "https://registry.yarnpkg.com/moment-timezone/-/moment-timezone-0.5.13.tgz#99ce5c7d827262eb0f1f702044177f60745d7b90"
+  dependencies:
+    moment ">= 2.9.0"
+
+"moment@>= 2.9.0":
+  version "2.18.1"
+  resolved "https://registry.yarnpkg.com/moment/-/moment-2.18.1.tgz#c36193dd3ce1c2eed2adb7c802dbbc77a81b1c0f"
+
 ms@0.7.1:
   version "0.7.1"
   resolved "https://registry.yarnpkg.com/ms/-/ms-0.7.1.tgz#9cd13c03adbff25b65effde7ce864ee952017098"