fix(app): 修复视频作品下载功能

Closes #324
Closes #325

source/application/app.py

@@ -194,8 +194,14 @@ class XHS:
             data, self.manager.image_format
         )
 
-    def __extract_video(self, container: dict, data: Namespace):
-        container["下载地址"] = self.video.get_video_link(data)
+    def __extract_video(
+        self,
+        container: dict,
+        data: Namespace,
+    ):
+        container["下载地址"] = self.video.get_video_link(
+            data,
+        )
         container["动图地址"] = [
             None,
         ]

source/application/video.py

@@ -12,9 +12,32 @@ class Video:
     )
 
     @classmethod
-    def get_video_link(cls, data: Namespace) -> list:
+    def generate_video_link(cls, data: Namespace) -> list:
         return (
             [Html.format_url(f"https://sns-video-bd.xhscdn.com/{t}")]
             if (t := data.safe_extract(".".join(cls.VIDEO_LINK)))
             else []
         )
+
+    @classmethod
+    def get_video_link(
+        cls,
+        data: Namespace,
+        preference="resolution",
+    ) -> list:
+        if not (items := cls.get_video_items(data)):
+            return []
+        match preference:
+            case "resolution":
+                items.sort(key=lambda x: x.height)
+            case "bitrate" | "size":
+                items.sort(key=lambda x: x.preference)
+            case _:
+                raise ValueError(f"Invalid video preference value: {preference}")
+        return [b[0]] if (b := items[-1].backupUrls) else [items[-1].masterUrl]
+
+    @staticmethod
+    def get_video_items(data: Namespace) -> list:
+        h264 = data.safe_extract("video.media.stream.h264")
+        h265 = data.safe_extract("video.media.stream.h265")
+        return [*h264, *h265]