@echo off
setlocal enabledelayedexpansion

echo Starting Blender file compression...

REM Check if files were dragged onto the batch file
if "%~1"=="" (
    echo.
    echo Usage: Drag .blend files onto this batch file to compress them.
    echo Output will be saved to the \output folder.
    echo.
    pause
    exit /b 1
)

REM Create output directory if it doesn't exist
if not exist "output" mkdir "output"

REM Create a temporary Python script for compression
set "TEMP_SCRIPT=compress_blend_temp.py"
echo Creating Python script: !TEMP_SCRIPT!

(
echo import bpy
echo import os
echo import sys
echo.
echo # Enable compression globally
echo bpy.context.preferences.filepaths.save_version = 0
echo bpy.context.preferences.filepaths.use_file_compression = True
echo.
echo # Create output directory if it doesn't exist
echo if not os.path.exists^("output"^):
echo     os.makedirs^("output"^)
echo.
echo # Get command line arguments ^(the dragged files^)
echo blend_files = sys.argv[sys.argv.index^("--"^) + 1:] if "--" in sys.argv else []
echo.
echo print^("Found " + str^(len^(blend_files^)^) + " .blend files to compress"^)
echo.
echo for blend_file in blend_files:
echo     if blend_file.lower^(^).endswith^(".blend"^):
echo         try:
echo             # Create output path in output folder
echo             filename = os.path.basename^(blend_file^)
echo             output_file = os.path.join^("output", filename^)
echo             # Check if output file already exists
echo             if os.path.exists^(output_file^):
echo                 print^("Skipping " + blend_file + " ^(already exists in output^)"^)
echo                 continue
echo             print^("Processing: " + blend_file^)
echo             # Load the blend file
echo             bpy.ops.wm.open_mainfile^(filepath=blend_file^)
echo             # Save with compression to output folder
echo             bpy.ops.wm.save_mainfile^(filepath=output_file, compress=True^)
echo             print^("Successfully compressed: " + blend_file + " -^> " + output_file^)
echo         except Exception as e:
echo             print^("Failed to compress " + blend_file + ": " + str^(e^)^)
echo     else:
echo         print^("Skipping " + blend_file + " ^(not a .blend file^)"^)
echo.
echo print^("Compression complete!"^)
echo bpy.ops.wm.quit_blender^(^)
) > "!TEMP_SCRIPT!"

REM Check if script was created successfully
if exist "!TEMP_SCRIPT!" (
    echo Script created successfully: !TEMP_SCRIPT!
) else (
    echo ERROR: Failed to create script file!
    pause
    exit /b 1
)

REM Run Blender to process the dragged files
echo Processing dragged .blend files...
echo Using script: !TEMP_SCRIPT!
blender --background --factory-startup --python "!TEMP_SCRIPT!" -- %*

REM Clean up temporary script
echo Cleaning up temporary script...
del "!TEMP_SCRIPT!" 2>nul

echo.
echo Done!
pause