feat: 补齐桌面端下载播放，并将窗口改为夜间主题和应用图标

server/routes/downloads.py

@@ -0,0 +1,112 @@
+from fastapi import APIRouter, HTTPException
+from pydantic import BaseModel
+
+from server.errors import call
+from server.schemas import DeviceBody, device_payload
+from server.services.downloads import downloads
+
+router = APIRouter(prefix="/api/downloads")
+
+
+class DownloadItem(BaseModel):
+    id: int
+    title: str = ""
+    image: str = ""
+
+
+class DownloadStartBody(BaseModel):
+    token: str = ""
+    device: DeviceBody | None = None
+    items: list[DownloadItem] = []
+
+
+class DirectoryBody(BaseModel):
+    path: str = ""
+
+
+class DownloadSettingsBody(BaseModel):
+    directory: str = ""
+    workers: int | None = None
+
+
+@router.get("")
+def list_downloads():
+    return downloads.snapshot()
+
+
+@router.post("")
+def start_downloads(body: DownloadStartBody):
+    return downloads.enqueue(body.token, device_payload(body.device), [item.model_dump() for item in body.items])
+
+
+@router.post("/directory")
+def set_directory(body: DirectoryBody):
+    if not body.path.strip():
+        raise HTTPException(status_code=400, detail="请选择目录")
+    return {"directory": downloads.set_directory(body.path.strip())}
+
+
+@router.post("/pick")
+def pick_directory():
+    return {"directory": downloads.pick_directory()}
+
+
+@router.post("/choose")
+def choose_directory():
+    return {"directory": downloads.choose_directory()}
+
+
+@router.get("/settings")
+def get_download_settings():
+    return downloads.settings_view()
+
+
+@router.post("/settings")
+def update_download_settings(body: DownloadSettingsBody):
+    if body.directory.strip():
+        downloads.set_directory(body.directory.strip())
+    if body.workers is not None:
+        try:
+            downloads.set_workers(body.workers)
+        except ValueError as exc:
+            raise HTTPException(status_code=400, detail=str(exc)) from exc
+    return downloads.settings_view()
+
+
+@router.post("/pause-all")
+def pause_all_downloads():
+    return downloads.pause_all()
+
+
+@router.post("/resume-all")
+def resume_all_downloads():
+    return downloads.resume_all()
+
+
+@router.post("/{drama_id}/pause")
+def pause_download(drama_id: str):
+    return downloads.pause(drama_id)
+
+
+@router.post("/{drama_id}/resume")
+def resume_download(drama_id: str):
+    return downloads.resume(drama_id)
+
+
+@router.post("/{drama_id}/cancel")
+def cancel_download(drama_id: str):
+    return downloads.cancel(drama_id)
+
+
+@router.post("/{drama_id}/open")
+def open_download(drama_id: str):
+    def action():
+        downloads.open_folder(drama_id)
+        return downloads.snapshot()
+
+    return call(action)
+
+
+@router.delete("/{drama_id}")
+def remove_download(drama_id: str):
+    return downloads.remove(drama_id)