support media:group

Author: witochandra

lib/domain/media/category.dart

@@ -0,0 +1,24 @@
+import 'package:xml/xml.dart';
+
+class Category {
+  final String scheme;
+  final String label;
+  final String value;
+
+  Category({
+    this.scheme,
+    this.label,
+    this.value,
+  });
+
+  factory Category.parse(XmlElement element) {
+    if (element == null) {
+      return null;
+    }
+    return new Category(
+      scheme: element.getAttribute("scheme"),
+      label: element.getAttribute("label"),
+      value: element.text,
+    );
+  }
+}

lib/domain/media/credit.dart

@@ -0,0 +1,21 @@
+import 'package:xml/xml.dart';
+
+class Credit {
+  final String role;
+  final String scheme;
+  final String value;
+
+  Credit({
+    this.role,
+    this.scheme,
+    this.value,
+  });
+
+  factory Credit.parse(XmlElement element) {
+    return new Credit(
+      role: element.getAttribute("role"),
+      scheme: element.getAttribute("scheme"),
+      value: element.text,
+    );
+  }
+}

lib/domain/media/group.dart

@@ -0,0 +1,40 @@
+import 'package:webfeed/domain/media/category.dart';
+import 'package:webfeed/domain/media/content.dart';
+import 'package:webfeed/domain/media/credit.dart';
+import 'package:webfeed/domain/media/rating.dart';
+import 'package:webfeed/util/helpers.dart';
+import 'package:xml/xml.dart';
+
+class Group {
+  final List<Content> contents;
+  final List<Credit> credits;
+  final Category category;
+  final Rating rating;
+
+  Group({
+    this.contents,
+    this.credits,
+    this.category,
+    this.rating,
+  });
+
+  factory Group.parse(XmlElement element) {
+    if (element == null) {
+      return null;
+    }
+    return new Group(
+      contents: element.findElements("media:content").map((e) {
+        return new Content.parse(e);
+      }).toList(),
+      credits: element.findElements("media:credit").map((e) {
+        return new Credit.parse(e);
+      }).toList(),
+      category: new Category.parse(
+        findElementOrNull(element, "media:category"),
+      ),
+      rating: new Rating.parse(
+        findElementOrNull(element, "media:rating"),
+      ),
+    );
+  }
+}

lib/domain/media/media.dart

@@ -1,17 +1,43 @@
+import 'package:webfeed/domain/media/category.dart';
 import 'package:webfeed/domain/media/content.dart';
+import 'package:webfeed/domain/media/credit.dart';
+import 'package:webfeed/domain/media/group.dart';
+import 'package:webfeed/domain/media/rating.dart';
+import 'package:webfeed/util/helpers.dart';
 import 'package:xml/xml.dart';
 
 class Media {
+  final Group group;
   final List<Content> contents;
+  final List<Credit> credits;
+  final Category category;
+  final Rating rating;
 
-  Media({this.contents});
+  Media({
+    this.group,
+    this.contents,
+    this.credits,
+    this.category,
+    this.rating,
+  });
 
   factory Media.parse(XmlElement element) {
-    var contents = element.findAllElements("media:content").map((e) {
-      return new Content.parse(e);
-    }).toList();
     return new Media(
-      contents: contents,
+      group: new Group.parse(
+        findElementOrNull(element, "media:group"),
+      ),
+      contents: element.findElements("media:content").map((e) {
+        return new Content.parse(e);
+      }).toList(),
+      credits: element.findElements("media:credit").map((e) {
+        return new Credit.parse(e);
+      }).toList(),
+      category: new Category.parse(
+        findElementOrNull(element, "media:category"),
+      ),
+      rating: new Rating.parse(
+        findElementOrNull(element, "media:rating"),
+      ),
     );
   }
 }

lib/domain/media/rating.dart

@@ -0,0 +1,21 @@
+import 'package:xml/xml.dart';
+
+class Rating {
+  final String scheme;
+  final String value;
+
+  Rating({
+    this.scheme,
+    this.value,
+  });
+
+  factory Rating.parse(XmlElement element) {
+    if (element == null) {
+      return null;
+    }
+    return new Rating(
+      scheme: element.getAttribute("scheme"),
+      value: element.text,
+    );
+  }
+}

lib/util/helpers.dart

@@ -2,6 +2,14 @@ import 'dart:core';
 
 import 'package:xml/xml.dart';
 
+XmlElement findElementOrNull(XmlElement element, String name) {
+  try {
+    return element.findAllElements(name).first;
+  } on StateError {
+    return null;
+  }
+}
+
 String xmlGetString(XmlElement element, String name, {strict: true}) {
   try {
     return element.findElements(name).first.text;

test/rss_test.dart

@@ -90,6 +90,11 @@ void main() {
     expect(item.link, "http://www.foo.com");
     expect(item.pubDate, "Mon, 27 Aug 2001 16:08:56 PST");
 
+    expect(item.media.group.contents.length, 5);
+    expect(item.media.group.credits.length, 2);
+    expect(item.media.group.category.value, "music/artist name/album/song");
+    expect(item.media.group.rating.value, "nonadult");
+
     expect(item.media.contents.length, 2);
     var mediaContent = item.media.contents.first;
     expect(mediaContent.url, "http://www.foo.com/video.mov");
@@ -102,5 +107,18 @@ void main() {
     expect(mediaContent.framerate, 25);
     expect(mediaContent.samplingrate, 44.1);
     expect(mediaContent.channels, 2);
+
+    expect(item.media.credits.length, 2);
+    var mediaCredit = item.media.credits.first;
+    expect(mediaCredit.role, "owner1");
+    expect(mediaCredit.scheme, "urn:yvs");
+    expect(mediaCredit.value, "copyright holder of the entity");
+
+    expect(item.media.category.scheme, "http://search.yahoo.com/mrss/category_ schema");
+    expect(item.media.category.label, "Music");
+    expect(item.media.category.value, "music/artist/album/song");
+
+    expect(item.media.rating.scheme, "urn:simple");
+    expect(item.media.rating.value, "adult");
   });
 }

test/xml/RSS-Media.xml

@@ -10,6 +10,30 @@
       <pubDate>Mon, 27 Aug 2001 16:08:56 PST</pubDate>
       <media:content url="http://www.foo.com/video.mov" fileSize="2000" medium="video" isDefault="true" expression="full" bitrate="128" framerate="25" samplingrate="44.1" channels="2" type="video/quicktime" />
       <media:content url="http://www.foo.com/video2.mov" fileSize="2000" bitrate="128" type="video/quicktime" expression="full" />
+      <media:credit role="owner1" scheme="urn:yvs">copyright holder of the entity</media:credit>
+      <media:credit role="owner2" scheme="urn:yvs">copyright holder of the entity</media:credit>
+      <media:category scheme="http://search.yahoo.com/mrss/category_ schema" label="Music">music/artist/album/song</media:category>
+      <media:rating scheme="urn:simple">adult</media:rating>
+      <media:group>
+        <media:content url="http://www.foo.com/song64kbps.mp3"
+          fileSize="1000" bitrate="64" type="audio/mpeg"
+          isDefault="true" expression="full" />
+        <media:content url="http://www.foo.com/song128kbps.mp3"
+          fileSize="2000" bitrate="128" type="audio/mpeg"
+          expression="full" />
+        <media:content url="http://www.foo.com/song256kbps.mp3"
+          fileSize="4000" bitrate="256" type="audio/mpeg"
+          expression="full" />
+        <media:content url="http://www.foo.com/song512kbps.mp3.torrent"
+          fileSize="8000" type="application/x-bittorrent;enclosed=audio/mpeg"
+          expression="full" />
+        <media:content url="http://www.foo.com/song.wav"
+          fileSize="16000" type="audio/x-wav" expression="full" />
+        <media:credit role="musician">band member 1</media:credit>
+        <media:credit role="musician">band member 2</media:credit>
+        <media:category>music/artist name/album/song</media:category>
+        <media:rating>nonadult</media:rating>
+      </media:group>
       <media:community>
         <media:starRating average="3.5" count="20" min="1" max="10" />
         <media:statistics views="5" favorites="5" />