From 121c165d624271d5294bf0dca75584b0d0ca3c30 Mon Sep 17 00:00:00 2001
From: Sidney Zhang <liangyi@me.com>
Date: Wed, 11 Feb 2026 18:33:30 +0800
Subject: [PATCH] 20260211

---
 src/pptopic/main.py | 45 ++++++++++++++++++++++++++++++++++++++++-----
 1 file changed, 40 insertions(+), 5 deletions(-)

diff --git a/src/pptopic/main.py b/src/pptopic/main.py
index c514718..4c982b5 100644
--- a/src/pptopic/main.py
+++ b/src/pptopic/main.py
@@ -28,17 +28,20 @@ def export(
     pptopic export presentation.pptx --output result.png --optimize --max-height 20000
     """
     try:
+        if output_name:
+            save_name = f"{output_name}.{format.lower()}" if "." not in output_name else output_name
+        else:
+            save_name = f"{input_file.stem}_{today(fmt="YYYYMMDDHHmm",addtime=True)}.{format.lower()}"
+        
         PPT_longPic(
             pptFile=input_file,
-            saveName=f"{output_name}.{format.lower()}" if output_name and "." not in output_name else output_name,
+            saveName=save_name,
             width=width,
             saveto=output_dir
         )
         
         if optimize:
-            output_path = output_dir / (output_name if output_name else input_file.stem)
-            if not output_path.suffix:
-                output_path = output_path.with_suffix(f".{format.lower()}")
+            output_path = output_dir / save_name
             
             imageOptimization(
                 imageFile=output_path,
@@ -48,10 +51,42 @@ def export(
                 engine_conf=engine_conf
             )
         
-        typer.echo(f"成功导出长图: {output_dir / (output_name if output_name else input_file.stem)}")
+        typer.echo(f"成功导出长图: {output_dir / save_name}")
     except Exception as e:
         typer.echo(f"导出失败: {e}", err=True)
         raise typer.Exit(code=1)
 
+@app.command()
+def optimize(
+    input_file: Path = typer.Argument(..., help="输入的图片文件路径", exists=True),
+    output_file: Path = typer.Option(None, "--output", "-o", help="输出图片文件路径，默认覆盖原文件"),
+    max_height: int = typer.Option(29999, "--max-height", help="优化图片的最大高度（默认29999）"),
+    engine: str = typer.Option("pngquant", "--engine", help="图片优化引擎（默认pngquant）"),
+    engine_conf: str = typer.Option("--skip-if-larger", "--engine-conf", help="图片优化引擎配置参数（默认--skip-if-larger）")
+):
+    """
+    单独优化图片
+    
+    示例:
+    pptopic optimize image.png
+    pptopic optimize image.png --output optimized.png --max-height 20000
+    pptopic optimize image.png --engine pngquant --engine-conf "--quality=80-90"
+    """
+    try:
+        save_file = output_file if output_file else input_file
+        
+        imageOptimization(
+            imageFile=input_file,
+            saveFile=save_file,
+            max_height=max_height,
+            engine=engine,
+            engine_conf=engine_conf
+        )
+        
+        typer.echo(f"成功优化图片: {save_file}")
+    except Exception as e:
+        typer.echo(f"优化失败: {e}", err=True)
+        raise typer.Exit(code=1)
+
 def main():
     app()