feat(get-magento-version): add get-magento-version action (#72)

.github/workflows/_internal-get-magento-version.yaml

@@ -0,0 +1,43 @@
+name: Get Magento Version
+
+on:
+  push:
+    branches:
+    - main
+    paths:
+    - ".github/workflows/_internal-get-magento-version.yaml"
+    - "get-magento-version/**"
+    - "!(**/*.md)"
+  pull_request:
+    branches:
+    - main
+    paths:
+    - ".github/workflows/_internal-get-magento-version.yaml"
+    - "get-magento-version/**"
+    - "!(**/*.md)"
+
+jobs:
+  get-magento-version:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - name: Set PHP Version
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: 8.1
+          tools: composer:v2.4.2
+      
+      - run: composer create-project --repository-url="https://mirror.mage-os.org" "magento/project-community-edition:2.4.5-p1" ../magento2 --no-install
+        shell: bash
+        name: Create Magento ${{ matrix.magento }} Project 
+
+      - uses: ./get-magento-version
+        id: magento-version
+        with:
+          working-directory:  ../magento2
+
+      - name: Fail if key does not match
+        if: steps.magento-version.outputs.version != '"2.4.5-p1"'
+        shell: bash
+        run: echo "${{ steps.magento-version.outputs.version }}" && exit 1
+       

README.md

@@ -26,5 +26,6 @@ Opinionated Github Actions and Workflows to make building, testing, and maintain
 | Action Name                                      | Description                                                        |
 | ------------------------------------------------ | ------------------------------------------------------------------ |
 | [Unit Test](./unit-test/README.md)               | A Github Action that runs the Unit Tests a Magento Package         |
-| [Installation Test](installation-test/README.md) | A Github Action that tests the installability of a Magento Package |
-| [Supported Version](supported-version/README.md) | A Github Action that computes the currently supported Github Actions Matrix for Magento 2 |
+| [Get Magento Version](./get-magento-version/README.md) | A Github Action that computes the installed Magento version. |
+| [Installation Test](./installation-test/README.md) | A Github Action that tests the installability of a Magento Package |
+| [Supported Version](./supported-version/README.md) | A Github Action that computes the currently supported Github Actions Matrix for Magento 2 |

get-magento-version/README.md

@@ -0,0 +1,32 @@
+# "Get Magento Version" Action
+
+A Github Action that computes an installed Magento version.
+
+## Inputs
+
+See the [action.yml](./action.yml)
+
+## Usage
+
+```yml
+name: Get Magento Version
+
+on:
+  push:
+    branches:
+    - main
+  pull_request:
+    branches:
+    - main
+
+jobs:
+  version:
+    runs-on: ubuntu-latest
+    name: A job to compute an installed Magento version.
+    steps:
+      - uses: actions/checkout@v3
+      - uses: graycoreio/github-actions-magento2/get-magento-version@main
+        id: get-magento-version
+      - run: echo version ${{ steps.get-magento-version.outputs.version }}
+        shell: bash
+```

get-magento-version/action.yml

@@ -0,0 +1,31 @@
+name: "Get Magento Version"
+author: "Graycore"
+description: " A Github Action that determines the currently installed version of Magento"
+
+inputs: 
+  working-directory: 
+    default: $GITHUB_WORKSPACE
+    description: "The current working directory of the action"
+    required: false
+
+outputs:
+  version: # id of output
+    description: 'The determined version of Magento'
+    value: ${{ steps.get-magento-version.outputs.version }}
+
+runs:
+  using: "composite"
+  steps:
+  - run: |
+      echo "::set-output name=version::$(cat composer.json | jq '.require 
+      | with_entries( select(.key == "magento/product-community-edition" or .key == "magento/product-enterprise-edition") )
+      | to_entries 
+      | .[0].value')"
+    shell: bash
+    working-directory:  ${{ inputs.working-directory }}
+    name: Compute Installed Magento version
+    id: get-magento-version
+
+branding:
+  icon: "code"
+  color: "green"