Fix changed files action for phpcs baseline

coding-standard-baseline/README.md

@@ -1,15 +1,23 @@
 # Magento 2 Coding Standard Action
 
-A Github Action that runs the Magento Coding Standard.
+This Github Action automates the enforcement of Magento Coding Standards. It ensures code consistency and quality by checking code against Magento's specific coding guidelines.
 
 ## Inputs
 
-See the [action.yml](./action.yml)
+For detailed descriptions of each input, refer to [action.yml](./action.yml).
 
-## Usage
+## Why a Baseline?
+
+Running PHP CodeSniffer (PHPCS) with a baseline is crucial for managing legacy code. It allows you to set a "starting point" for code quality, ignoring existing issues while ensuring no new issues are introduced. This approach is especially useful for large codebases where addressing all existing issues at once is not feasible. The baseline serves as a record of known issues, enabling teams to focus on maintaining and gradually improving code quality in new or modified code.
+
+## Usage Example
+
+The following example demonstrates how to set up the action in your workflow:
+
+Check how this action is used in mage-os [here](https://github.com/mage-os/mageos-magento2/blob/2.4-develop/.github/workflows/coding-standard-baseline.yml).
 
 ```yml
-name: Coding Standard baseline
+name: Coding Standard Baseline
 
 on:
   push:
@@ -25,6 +33,8 @@ jobs:
     steps:
     - uses: mage-os/github-actions/coding-standard-baseline@main
       with:
+        head_repo: "mage-os/mageos-magento2"
+        head_ref: "main"
         php_version: "8.2"
         composer_version: "2"
         version: "*"

coding-standard-baseline/action.yml

@@ -45,70 +45,67 @@ inputs:
     default: "*"
     description: "The version of phpcs baseline to use (default: latest)."
 
+  head_repo:
+    type: string
+    required: true
+    description: "The repository full name of the head branch. E.g.: mage-os/mageos-magento2"
+
+  head_ref:
+    type: string
+    required: true
+    description: "The branch name of the head branch. E.g.: main"
+
 runs:
   using: composite
   steps:
     - name: Checkout head
       uses: actions/checkout@v4
       with:
-        ref: ${{github.event.pull_request.head.ref}}
-        repository: ${{github.event.pull_request.head.repo.full_name}}
+        ref: ${{ inputs.head_ref }}
+        repository: ${{ inputs.head_repo }}
 
-    - name: Get all changed files
-      uses: tj-actions/changed-files@v39
-      id: changed-files-phpcs
+    - uses: dorny/paths-filter@v2
+      name: Filter changed files
+      id: filter
       with:
-        files_yaml: |
-          app:
-            - '**/*.php'
-            - '**/*.phtml'
-            - '**/*.graphqls'
-            - '**/*.less'
-            - '**/*.css'
-            - '**/*.html'
-            - '**/*.xml'
-            - '**/*.js'
-
-    - name: Inform if no files have changed
-      if: steps.changed-files-phpcs.outputs.app_any_changed == 'false'
-      shell: bash
-      run: |
-        echo "No files relevant to PHPCS have changed. Skipping PHPCS run."
-        echo "List all the files that have changed: ${{ steps.changed-files-phpcs.outputs.app_all_changed_files }}"
+        list-files: shell
+        filters: |
+          phpcs:
+            - added|modified: '**/**.{php,phtml,graphqls,less,css,html,xml,js}'
 
-    - name: Inform if relevant files have changed
-      if: steps.changed-files-phpcs.outputs.app_any_changed == 'true'
+    - name: Check changed files for PHPcs
+      if: steps.filter.outputs.phpcs == 'true'
       shell: bash
       run: |
         echo "One or more files relevant to PHPCS have changed."
-        echo "List all the files that have changed: ${{ steps.changed-files-phpcs.outputs.app_all_changed_files }}"
+        echo "List all the files that have changed: ${{ steps.filter.outputs.phpcs_files }}"
 
     - name: Setup PHP
-      if: steps.changed-files-phpcs.outputs.app_any_changed == 'true'
+      if: steps.filter.outputs.phpcs == 'true'
       uses: shivammathur/setup-php@v2
       with:
         php-version: ${{ inputs.php_version }}
         tools: composer:v${{ inputs.composer_version }}
         coverage: none
 
-    - name: Create composer project
-      if: steps.changed-files-phpcs.outputs.app_any_changed == 'true'
+    - name: Install coding standards
+      if: steps.filter.outputs.phpcs == 'true'
       shell: bash
       run: |
         composer create-project --no-plugins --no-dev \
         magento/magento-coding-standard \
         magento-coding-standard "${{ github.event.inputs.version || '*' }}"
 
-    - name: Register coding standards
-      if: steps.changed-files-phpcs.outputs.app_any_changed == 'true'
+    - name: Install phpcs baseline
+      if: steps.filter.outputs.phpcs == 'true'
       working-directory: magento-coding-standard
       shell: bash
       run: |
         composer config --no-plugins allow-plugins.digitalrevolution/php-codesniffer-baseline true
         composer require --dev "digitalrevolution/php-codesniffer-baseline: ${{ github.event.inputs.baseline_version || '*' }}"
 
-    - name: Checkout base to generate baseline
-      if: steps.changed-files-phpcs.outputs.app_any_changed == 'true'
+    - name: Checkout base
+      if: steps.filter.outputs.phpcs == 'true'
       uses: actions/checkout@v4
       with:
         ref: ${{github.event.pull_request.base.ref}}
@@ -118,35 +115,35 @@ runs:
     - name: Create phpcs.baseline.xml from base
       shell: bash
       working-directory: base
-      if: steps.changed-files-phpcs.outputs.app_any_changed == 'true'
+      if: steps.filter.outputs.phpcs == 'true'
       run: |
         php ${{ github.workspace }}/magento-coding-standard/vendor/bin/phpcs --standard=Magento2 \
         $([ -n "${{ inputs.severity }}" ] && echo "--severity=${{ inputs.severity }}") \
         $([ -n "${{ inputs.warning_severity }}" ] && echo "--warning-severity=${{ inputs.warning_severity }}") \
         $([ -n "${{ inputs.error_severity }}" ] && echo "--error-severity=${{ inputs.error_severity }}") \
         --report=\\DR\\CodeSnifferBaseline\\Reports\\Baseline --report-file=phpcs.baseline.xml \
-        ${{ steps.changed-files-phpcs.outputs.app_all_changed_files }} || /bin/true
+        ${{ steps.filter.outputs.phpcs_files }} || /bin/true
 
     - name: Copy baseline to head
-      if: steps.changed-files-phpcs.outputs.app_any_changed == 'true'
+      if: steps.filter.outputs.phpcs == 'true'
       shell: bash
       run: |
         cp ${{ github.workspace }}/base/phpcs.baseline.xml ${{ github.workspace }}/magento-coding-standard/phpcs.baseline.xml
 
     # Since we ran phpcs in the base folder, the files in phpcs.baseline.xml contain the base folder in the path.
     # We need to remove /base/ so that the phpcs can locate the correct files.
     - name: Remove base dir from phpcs baseline
-      if: steps.changed-files-phpcs.outputs.app_any_changed == 'true'
+      if: steps.filter.outputs.phpcs == 'true'
       shell: bash
       run: |
         sed -i "s|/base/|/|" ${{ github.workspace }}/magento-coding-standard/phpcs.baseline.xml
 
     - name: Execute phpcs on head for changed files
       shell: bash
-      if: steps.changed-files-phpcs.outputs.app_any_changed == 'true'
-      run: |        
+      if: steps.filter.outputs.phpcs == 'true'
+      run: |
         php ${{ github.workspace }}/magento-coding-standard/vendor/bin/phpcs --standard=Magento2 \
         $([ -n "${{ inputs.severity }}" ] && echo "--severity=${{ inputs.severity }}") \
         $([ -n "${{ inputs.warning_severity }}" ] && echo "--warning-severity=${{ inputs.warning_severity }}") \
         $([ -n "${{ inputs.error_severity }}" ] && echo "--error-severity=${{ inputs.error_severity }}") \
-        ${{ steps.changed-files-phpcs.outputs.app_all_changed_files }}
+        ${{ steps.filter.outputs.phpcs_files }}