fixed download size feedback

src/music_kraken/pages/abstract.py

@@ -513,17 +513,15 @@ class Page:
 
         target: Target
         if any(target.exists for target in song.target_collection) and not override_existing:
+            r = DownloadResult(total=1, fail=0)
+            
             existing_target: Target
             for existing_target in song.target_collection:
                 if existing_target.exists:
+                    r.merge(cls._post_process_targets(song=song, temp_target=existing_target))
                     break
-
-            for target in song.target_collection:
-                if target is existing_target:
-                    continue
-
-                existing_target.copy_content(target)
-            return DownloadResult(total=1, fail=0)
+  
+            return r
 
         sources = song.source_collection.get_sources_from_page(cls.SOURCE_TYPE)
         if len(sources) == 0:
@@ -537,20 +535,23 @@ class Page:
         r = cls._download_song_to_targets(source=sources[0], target=temp_target, desc=song.title)
 
         if not r.is_fatal_error:
-            cls._post_process_targets(song, temp_target)
-
-        for target in song.target_collection:
-            r.add_target(target)
+            r.merge(cls._post_process_targets(song, temp_target))
 
         return r
 
     @classmethod
-    def _post_process_targets(cls, song: Song, temp_target: Target):
+    def _post_process_targets(cls, song: Song, temp_target: Target) -> DownloadResult:
         write_metadata_to_target(song.metadata, temp_target)
 
+        r = DownloadResult()
+
         target: Target
         for target in song.target_collection:
-            temp_target.copy_content(target)
+            if temp_target is not target:
+                temp_target.copy_content(target)
+            r.add_target(target)
+        
+        return r
 
     @classmethod
     def _fetch_song_from_source(cls, source: Source, stop_at_level: int = 1) -> Song:

src/music_kraken/pages/support_classes/download_result.py

@@ -1,10 +1,14 @@
 from dataclasses import dataclass, field
-from typing import List
+from typing import List, Tuple
 
 from ...utils.shared import SHOW_DOWNLOAD_ERRORS_THRESHOLD, DOWNLOAD_LOGGER as LOGGER
 from ...objects import Target
 
 
+UNIT_PREFIXES: List[str] = ["", "k", "m", "g", "t"]
+UNIT_DIVISOR=1024
+
+
 @dataclass
 class DownloadResult:
     total: int = 0
@@ -41,9 +45,18 @@ class DownloadResult:
 
         return self.failure_percentage > SHOW_DOWNLOAD_ERRORS_THRESHOLD
     
+    def _size_val_unit_pref_ind(self, val: float, ind: int) -> Tuple[float, int]:
+        if val < UNIT_DIVISOR:
+            return val, ind
+        if ind >= len(UNIT_PREFIXES):
+            return val, ind
+        
+        return self._size_val_unit_pref_ind(val=val/UNIT_DIVISOR, ind=ind+1)
+    
     @property
     def formated_size(self) -> str:
-        return f"{self.total_size}B"
+        total_size, prefix_index = self._size_val_unit_pref_ind(self.total_size, 0)
+        return f"{total_size:.{2}f} {UNIT_PREFIXES[prefix_index]}B"
     
     def add_target(self, target: Target):
         self.total_size += target.size