# Blender Integration Plan v2

## Goal

Add an optional step to `main.py` to run `blenderscripts/create_nodegroups.py` and `blenderscripts/create_materials.py` on specified `.blend` files after asset processing is complete.

## Proposed Plan

1.  **Update `config.py`:**
    *   Add two new optional configuration variables: `DEFAULT_NODEGROUP_BLEND_PATH` and `DEFAULT_MATERIALS_BLEND_PATH`. These will store the default paths to the Blender files.

2.  **Update `main.py` Argument Parser:**
    *   Add two new optional command-line arguments: `--nodegroup-blend` and `--materials-blend`.
    *   These arguments will accept file paths to the respective `.blend` files.
    *   If provided, these arguments will override the default paths specified in `config.py`.

3.  **Update `blenderscripts/create_nodegroups.py` and `blenderscripts/create_materials.py`:**
    *   Modify both scripts to accept the processed asset library root path (`PROCESSED_ASSET_LIBRARY_ROOT`) as a command-line argument. This will be passed to the script when executed by Blender using the `--` separator.
    *   Update the scripts to read this path from `sys.argv` instead of using the hardcoded variable.

4.  **Update `main.py` Execution Flow:**
    *   After the main asset processing loop (`run_processing`) completes and the summary is reported, check if the `--nodegroup-blend` or `--materials-blend` arguments (or their fallbacks from `config.py`) were provided.
    *   If a path for the nodegroup `.blend` file is available:
        *   Construct a command to execute Blender in the background (`-b`), load the specified nodegroup `.blend` file, run the `create_nodegroups.py` script using `--python`, pass the processed asset root directory as an argument after `--`, and save the `.blend` file (`-S`).
        *   Execute this command using the `execute_command` tool.
    *   If a path for the materials `.blend` file is available:
        *   Construct a similar command to execute Blender in the background, load the specified materials `.blend` file, run the `create_materials.py` script using `--python`, pass the processed asset root directory as an argument after `--`, and save the `.blend` file (`-S`).
        *   Execute this command using the `execute_command` tool.
    *   Include error handling for the execution of the Blender commands.

## Execution Flow Diagram

```mermaid
graph TD
    A[Asset Processing Complete] --> B[Report Summary];
    B --> C{Nodegroup Blend Path Specified?};
    C -- Yes --> D[Get Nodegroup Blend Path (Arg or Config)];
    D --> E[Construct Blender Command for Nodegroups];
    E --> F[Execute Command: blender -b nodegroup.blend --python create_nodegroups.py -- <asset_root> -S];
    F --> G{Command Successful?};
    G -- Yes --> H{Materials Blend Path Specified?};
    G -- No --> I[Log Nodegroup Error];
    I --> H;
    H -- Yes --> J[Get Materials Blend Path (Arg or Config)];
    J --> K[Construct Blender Command for Materials];
    K --> L[Execute Command: blender -b materials.blend --python create_materials.py -- <asset_root> -S];
    L --> M{Command Successful?};
    M -- Yes --> N[End main.py];
    M -- No --> O[Log Materials Error];
    O --> N;
    H -- No --> N;
    C -- No --> H;