rssVideos: Show creator

Even if it's not always  present for all RSS feeds

config/scripts/rssVideos

@@ -48,37 +48,54 @@ class RVCommand(enum.Enum):
 
 
 class RVElement:
-    title: str
-    link: str
-    # creator: str
-    # description: str
-    # date: datetime.datetime
-    guid: int
-
     parent: "RVDatabase"
+    item: minidom.Element
     was_downloaded: bool
 
     def __init__(self, parent: "RVDatabase", item: minidom.Element) -> None:
-        def get_data(tag_name: str) -> str:
-            nodes = item.getElementsByTagName(tag_name)
+        self.parent = parent
+        self.item = item
+        self.was_downloaded = False
+
+    def get_tag_data(self, tag_name: str) -> str:
+        nodes = self.item.getElementsByTagName(tag_name)
         if len(nodes) != 1:
-                raise RuntimeError(f"Exepected 1 tag `{tag_name}`, got {len(nodes)}.")
+            raise KeyError(f"Exepected 1 tag `{tag_name}`, got {len(nodes)}.")
         children = nodes[0].childNodes
         if len(children) != 1:
-                raise RuntimeError(
+            raise KeyError(
                 f"Exepected 1 children for tag `{tag_name}`, got {len(children)}."
             )
         return children[0].data
 
-        self.title = get_data("title")
-        self.link = get_data("link")
-        # self.creator = get_data("dc:creator")
-        # self.description = get_data("description")
-        # self.date = get_data("pubDate")
-        self.guid = int(get_data("guid"))
+    @property
+    def title(self) -> str:
+        return self.get_tag_data("title")
 
-        self.parent = parent
-        self.was_downloaded = False
+    @property
+    def link(self) -> str:
+        return self.get_tag_data("link")
+
+    @property
+    def creator(self) -> typing.Optional[str]:
+        try:
+            return self.get_tag_data("dc:creator")
+        except KeyError:
+            return None
+
+    @property
+    def description(self) -> str:
+        # TODO Testing
+        return self.get_tag_data("description")
+
+    @property
+    def date(self) -> str:
+        # TODO datetime format
+        return self.get_tag_data("pubDate")
+
+    @property
+    def guid(self) -> int:
+        return int(self.get_tag_data("guid"))
 
     def read_cache(self, cache: "RVElement") -> None:
         if "ytdl_infos" in cache.__dict__:
@@ -88,7 +105,7 @@ class RVElement:
             self.was_downloaded = True
 
     def __str__(self) -> str:
-        return f"{self.title} – {self.link}"
+        return f"{self.guid}: {self.creator} – {self.title} – {self.link}"
 
     @property
     def downloaded(self) -> bool:
@@ -204,12 +221,15 @@ class RVDatabase:
             if el.guid in cache_els:
                 el.read_cache(cache_els[el.guid])
 
+    @functools.cached_property
+    def feed_xml(self) -> minidom.Document:
+        with urllib.request.urlopen(self.args.feed) as request:
+            return minidom.parse(request)
+
     def read_feed(self) -> None:
         log.info("Fetching RSS feed")
         self.elements = list()
-        with urllib.request.urlopen(self.args.feed) as request:
-            with minidom.parse(request) as xmldoc:
-                for item in xmldoc.getElementsByTagName("item"):
+        for item in self.feed_xml.getElementsByTagName("item"):
             element = RVElement(self, item)
             self.elements.insert(0, element)
             log.debug(f"Known: {element}")