添加是否覆盖询问

src/top.py

@@ -75,6 +75,8 @@ class Top:
         self.y_label = output.y_label
         self.month_count = output.month_count
 
+        self.override_all_gif = False
+
     def build(self):
         self.__load_dataframe()
         # self.__exit()
@@ -94,16 +96,31 @@ class Top:
             self.df = df[i:end]
 
             filename = os.path.join(self.output, f'{j}.{self.ext}')
-            # self.__build_race(filename)
+            self.__build_race(filename)
             gifs.append(filename)
             i += step
             j += 1
 
+        # 合并 gif 生成mp4
         all = f'{self.output}.mp4'
-        # concat_gif_list(gifs, all)
+        if os.path.exists(all):
+            ret = input(f"文件:{all}已存在，是否覆盖？[y/n]:")
+            if ret == 'y':
+                concat_gif_list(gifs, all)
+        else:
+            concat_gif_list(gifs, all)
+
+        # 合成 mp4 和 音频
         if self.audio is not None:
             all_with_audio = f'{self.output}_with_audio.mp4'
-            merge_video_audio(all, self.audio, all_with_audio)
+            if os.path.exists(all_with_audio):
+                ret = input(f"文件:{all_with_audio}已存在，是否覆盖？[y/n]:")
+                if ret == 'y':
+                    merge_video_audio(all, self.audio, all_with_audio)
+            else:
+                merge_video_audio(all, self.audio, all_with_audio)
+        else:
+            print(f"音频文件{self.audio}不存在，请自行准备一个合适的音频文件。")
 
     def __load_dataframe(self):
         if self.input_type == 'json_dir':
@@ -178,6 +195,23 @@ class Top:
             matplotlib.rc("font", family='FZFangSong-Z02')
 
     def __build_race(self, filename):
+        build = False
+        if self.override_all_gif:
+            build = True
+        else:
+            if os.path.exists(filename):
+                ret = input(f"文件:{filename}已存在，是否覆盖？[a/y/n]:")
+                if ret == 'y':
+                    build = True
+                elif ret == 'a':
+                    build = True
+                    self.override_all_gif = True
+            else:
+                build = True
+
+        if not build:
+            return
+
         bar_chart_race(
             df=self.df,
             filename=filename,