Convert action to composite

* move the current action to a sub folder and create a new top level composite action that reuses the old config action
* add workflow tests

.github/test.yaml

@@ -0,0 +1,40 @@
+name: Tests
+
+on:
+  push:
+  pull_request:
+
+# Ensure that new pushes/updates cancel running jobs
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  test-config:
+    name: Config only
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+      - name: Setup Flutter
+        id: config
+        uses: ./
+        with:
+          path: test/.fvmrc
+      - run: echo ${{ steps.config.outputs.FLUTTER_VERSION }}
+      - run: echo ${{ steps.config.outputs.FLUTTER_CHANNEL }}
+      - run: echo ${{ env.FLUTTER_VERSION }}
+      - run: echo ${{ env.FLUTTER_CHANNEL }}
+
+  test-setup:
+    name: Setup
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+      - name: Setup Flutter
+        uses: ./
+        with:
+          path: test/.fvmrc
+          setup-flutter: true
+      - run: flutter --version

action.yaml

@@ -1,5 +1,5 @@
 name: 'Flutter FVM config action'
-description: 'Action that parses an FVM config file in order to configure the subosito/flutter-action.'
+description: 'Action that parses an FVM config file in order to configure or setup the subosito/flutter-action.'
 author: 'Peter Leibiger'
 inputs:
   path:
@@ -9,14 +9,31 @@ inputs:
     description: 'Flavor to use'
     required: false
     default: ''
+  setup-flutter:
+    description: 'Setup Flutter (default: false)'
+    required: false
+    default: 'false'
 outputs:
   FLUTTER_VERSION:
     description: 'The version of Flutter specified in the fvm configuration file'
+    value: ${{ steps.config-action.outputs.FLUTTER_VERSION }}
   FLUTTER_CHANNEL:
     description: 'The channel of Flutter specified in the fvm configuration file'
+    value: ${{ steps.config-action.outputs.FLUTTER_CHANNEL }}
 runs:
-  using: 'node20'
-  main: 'dist/index.js'
+  using: 'composite'
+  steps:
+    - uses: ./config-action
+      id: config-action
+      with:
+        path: ${{ inputs.path }}
+        flavor: ${{ inputs.flavor }}
+    - uses: subosito/flutter-action@v2
+      if: inputs.setup-flutter == 'true'
+      with:
+        cache: true
+        flutter-version: ${{ steps.config-action.outputs.FLUTTER_VERSION }}
+        channel: ${{ steps.config-action.outputs.FLUTTER_CHANNEL }}
 branding:
   icon: 'maximize'
   color: 'blue'

config-action/action.yaml

@@ -0,0 +1,22 @@
+name: 'Flutter FVM config action'
+description: 'Action that parses an FVM config file in order to configure the subosito/flutter-action.'
+author: 'Peter Leibiger'
+inputs:
+  path:
+    description: 'Path to the FVM config file'
+    required: false
+  flavor:
+    description: 'Flavor to use'
+    required: false
+    default: ''
+outputs:
+  FLUTTER_VERSION:
+    description: 'The version of Flutter specified in the fvm configuration file'
+  FLUTTER_CHANNEL:
+    description: 'The channel of Flutter specified in the fvm configuration file'
+runs:
+  using: 'node20'
+  main: 'dist/index.js'
+branding:
+  icon: 'maximize'
+  color: 'blue'

test/.fvmrc

@@ -0,0 +1,4 @@
+{
+  "flutter": "3.24.0@stable",
+  "flavors": {}
+}