fix python instance init, remove and edit clip meta, add meta on record

audio-service/src/metadata_manager.py

@@ -7,8 +7,9 @@ class MetaDataManager:
     def __new__(cls, *args, **kwargs):
         if cls._instance is None:
             cls._instance = super().__new__(cls)
+            cls._instance.init()
         return cls._instance
-    def __init__(self):
+    def init(self):
         # read metadata file from executing directory
         self.metadata_file = os.path.join(os.getcwd(), "metadata.json")
         if os.path.exists(self.metadata_file):
@@ -16,6 +17,9 @@ class MetaDataManager:
                 self.collections = json.load(f)
         else:
             self.collections = {}
+        if(collections := self.collections.get("Uncategorized")) is None:
+            self.collections["Uncategorized"] = []
+            self.save_metadata()
     
     def create_collection(self, name):
         if name in self.collections:
@@ -34,6 +38,31 @@ class MetaDataManager:
             raise ValueError(f"Collection '{collection_name}' does not exist.")
         self.collections[collection_name].append(clip_metadata)
         self.save_metadata()
+
+    def remove_clip_from_collection(self, collection_name, clip_metadata):
+        if collection_name not in self.collections:
+            raise ValueError(f"Collection '{collection_name}' does not exist.")
+        # Remove all clips with the same file name as clip_metadata["file_name"]
+        in_list = any(clip.get("filename") == clip_metadata.get("filename") for clip in self.collections[collection_name])
+        if not in_list:
+            raise ValueError(f"Clip with filename '{clip_metadata.get('filename')}' not found in collection '{collection_name}'.")
+
+        self.collections[collection_name] = [
+            clip for clip in self.collections[collection_name]
+            if clip.get("filename") != clip_metadata.get("filename")
+        ]
+        self.save_metadata()
+
+    def edit_clip_in_collection(self, collection_name, new_clip_metadata):
+        if collection_name not in self.collections:
+            raise ValueError(f"Collection '{collection_name}' does not exist.")
+        # Find the index of the clip with the same file name as old_clip_metadata["file_name"]
+        index = next((i for i, clip in enumerate(self.collections[collection_name]) if clip.get("filename") == new_clip_metadata.get("filename")), None)
+        if index is None:
+            raise ValueError(f"Clip with filename '{new_clip_metadata.get('filename')}' not found in collection '{collection_name}'.")
+        
+        self.collections[collection_name][index] = new_clip_metadata
+        self.save_metadata()
     
     def get_collections(self):
         return list(self.collections.keys())
@@ -43,6 +72,18 @@ class MetaDataManager:
             raise ValueError(f"Collection '{collection_name}' does not exist.")
         return self.collections[collection_name]
     
+    def reorder_clips_in_collection(self, collection_name, new_order):
+        if collection_name not in self.collections:
+            raise ValueError(f"Collection '{collection_name}' does not exist.")
+        existing_filenames = {clip.get("filename") for clip in self.collections[collection_name]}
+        new_filenames = {clip.get("filename") for clip in new_order}
+        
+        if not new_filenames.issubset(existing_filenames):
+            raise ValueError("New order contains clips that do not exist in the collection.")
+        
+        self.collections[collection_name] = new_order
+        self.save_metadata()
+    
     def save_metadata(self):
         with open(self.metadata_file, "w") as f:
             json.dump(self.collections, f, indent=4)