fix: 上传封面前先检测是否已有海报

README.md

@@ -136,7 +136,7 @@ Executing this program will result in the loss of old metadata for series and bo
     - ~~意义不明的参数~~，建议设置为`False`，可缩短程序运行时间
     - 如果刷新书时，bangumi 数据不完整，则可以在数据补充后使用此参数修正此书元数据
 
-- `USE_BANGUMI_THUMBNAIL`: 设置为`True`时使用 Bangumi 封面替换 Komga 生成的缩略图
+- `USE_BANGUMI_THUMBNAIL`: 设置为`True`时使用 Bangumi 封面替换 Komga 生成的缩略图（如果未曾上传过海报）
 
 ## 如何修正错误元数据
 

api/komgaApi.py

@@ -19,7 +19,9 @@ def __init__(self, base_url, username, password):
         self.r.mount('https://', HTTPAdapter(max_retries=3))
 
         url = f'{self.base_url}/login/set-cookie'
-        if self.r.get(url, auth=self.auth).status_code != 204:
+        response = self.r.get(url, auth=self.auth,headers = {
+            'User-Agent': 'chu-shen/BangumiKomga (https://github.com/chu-shen/BangumiKomga)'})
+        if response.status_code != 204:
             logger.error("Komga: login failed!")
             exit(1)
 
@@ -98,6 +100,21 @@ def get_series_books(self, series_id):
             return []
         # return the response as a JSON object
         return response.json()
+
+    def get_series_thumbnails(self, series_id):
+        '''
+        Retrieves all thumbnails in a specified series in the komga comic.
+        '''
+        try:
+            # make a GET request to the URL to retrieve all thumbnails in a given series
+            response = self.r.get(
+                f'{self.base_url}/series/{series_id}/thumbnails')
+            response.raise_for_status()
+        except requests.exceptions.RequestException as e:
+            logger.error(f"An error occurred: {e}")
+            return []
+        # return the response as a JSON object
+        return response.json()
 
     def update_series_metadata(self, series_id, metadata):
         '''

refreshMetadata.py

@@ -117,7 +117,8 @@ def refresh_metadata(force_refresh_list=[]):
             success_count, success_comic = record_series_status(
                 conn, series_id, subject_id, 1, series_name, komga_metadata.title, success_count, success_comic)
             # 使用 Bangumi 图片替换原封面
-            if USE_BANGUMI_THUMBNAIL:
+            # 确保没有上传过海报，避免重复上传
+            if USE_BANGUMI_THUMBNAIL and len(komga.get_series_thumbnails(series_id)) == 0:
                 thumbnail=bgm.get_subject_thumbnail(metadata)
                 replace_thumbnail_result=komga.update_series_thumbnail(series_id, thumbnail)
                 if replace_thumbnail_result: