# Setup Flutter

Cross-platform composite action to set up the Flutter SDK with automated caching on macOS, Windows, and Linux. Supports local Git mirrors with automatic fallback to upstream GitHub.

## Features

- **Multi-OS Support**: Native setup for macOS (Apple Silicon & Intel), Windows (PowerShell), and Linux.
- **Git Mirror & Fallback**: Clones from local Gitea Flutter mirror (`https://git.rodydavis.dev/rodydavis/flutter.git`) with automatic fallback to `https://github.com/flutter/flutter.git`.
- **SDK Caching**: Uses `actions/cache@v3` to cache the full Flutter SDK directory across workflow runs based on OS, CPU architecture, and version.
- **Desktop Windowing**: Automatically configures desktop windowing support and exports Flutter to `$GITHUB_PATH`.

## Inputs

| Name | Description | Required | Default |
| :--- | :--- | :--- | :--- |
| `version` | Flutter channel, tag, or branch (e.g., `master`, `stable`, `3.29.0`). | No | `master` |
| `mirror_url` | Git repository URL for Flutter SDK mirror. | No | `https://git.rodydavis.dev/rodydavis/flutter.git` |
| `git_token` | Gitea token for authenticated git mirror access. | No | `''` |
| `cache` | Enable Flutter SDK caching across CI runs. | No | `true` |
| `enable_windowing` | Enable desktop windowing and platform configs. | No | `true` |

## Example Usage

### Basic Usage (Master Channel)

```yaml
- name: Set up Flutter
  uses: rodydavis/shared-actions/setup-flutter@main
  with:
    version: master
    git_token: ${{ secrets.GIT_TOKEN }}
```

### Specific Version Tag with Caching

```yaml
- name: Set up Flutter 3.29.0
  uses: rodydavis/shared-actions/setup-flutter@main
  with:
    version: '3.29.0'
    cache: 'true'
```