fix: correctly handle pull_request_target event (community-scripts#1327)

* Fix workflow on pull_request_target

* fix fromJSON

Author: se-bastiaan

.github/workflows/validate-filenames.yml

@@ -16,6 +16,7 @@ jobs:
 
     steps:
       - name: Get pull request information
+        if: github.event_name == 'pull_request_target'
         uses: actions/github-script@v7
         id: pr
         with:
@@ -30,13 +31,13 @@ jobs:
         uses: actions/checkout@v4
         with:
           fetch-depth: 0 # Ensure the full history is fetched for accurate diffing
-          ref: ${{ fromJSON(steps.pr.outputs.result).merge_commit_sha }}
+          ref: ${{ github.event_name == 'pull_request_target' && fromJSON(steps.pr.outputs.result).merge_commit_sha || '' }}
 
       - name: Get changed files
         id: changed-files
         run: |
-          if ${{ github.event_name == 'pull_request' }}; then
-              echo "files=$(git diff --name-only ${{ github.event.pull_request.base.sha }} ${{ github.sha }} | xargs)" >> $GITHUB_OUTPUT
+          if ${{ github.event_name == 'pull_request_target' }}; then
+              echo "files=$(git diff --name-only ${{ github.event.pull_request.base.sha }} ${{ steps.pr.outputs.result && fromJSON(steps.pr.outputs.result).merge_commit_sha }} | xargs)" >> $GITHUB_OUTPUT
           else
               echo "files=$(git diff --name-only ${{ github.event.before }} ${{ github.event.after }} | xargs)" >> $GITHUB_OUTPUT
           fi
@@ -88,7 +89,7 @@ jobs:
           fi
 
       - name: Post results and comment
-        if: always() && steps.check-scripts.outputs.files != '' && steps.check-json.outputs.files != '' && github.event_name == 'pull_request'
+        if: always() && steps.check-scripts.outputs.files != '' && steps.check-json.outputs.files != '' && github.event_name == 'pull_request_target'
         uses: actions/github-script@v7
         with:
           script: |

.github/workflows/validate-formatting.yaml

@@ -18,6 +18,7 @@ jobs:
 
     steps:
       - name: Get pull request information
+        if: github.event_name == 'pull_request_target'
         uses: actions/github-script@v7
         id: pr
         with:
@@ -32,13 +33,13 @@ jobs:
         uses: actions/checkout@v4
         with:
           fetch-depth: 0 # Ensure the full history is fetched for accurate diffing
-          ref: ${{ fromJSON(steps.pr.outputs.result).merge_commit_sha }}
+          ref: ${{ github.event_name == 'pull_request_target' && fromJSON(steps.pr.outputs.result).merge_commit_sha || '' }}
 
       - name: Get changed files
         id: changed-files
         run: |
           if ${{ github.event_name == 'pull_request' }}; then
-              echo "files=$(git diff --name-only ${{ github.event.pull_request.base.sha }} ${{ github.sha }} | grep -E '\.(sh|func)$' | xargs)" >> $GITHUB_OUTPUT
+              echo "files=$(git diff --name-only ${{ github.event.pull_request.base.sha }} ${{ steps.pr.outputs.result && fromJSON(steps.pr.outputs.result).merge_commit_sha }} | grep -E '\.(sh|func)$' | xargs)" >> $GITHUB_OUTPUT
           else
               echo "files=$(git diff --name-only ${{ github.event.before }} ${{ github.event.after }} | grep -E '\.(sh|func)$' | xargs)" >> $GITHUB_OUTPUT
           fi

.github/workflows/validate-scripts.yml

@@ -17,6 +17,7 @@ jobs:
 
     steps:
       - name: Get pull request information
+        if: github.event_name == 'pull_request_target'
         uses: actions/github-script@v7
         id: pr
         with:
@@ -31,7 +32,7 @@ jobs:
         uses: actions/checkout@v4
         with:
           fetch-depth: 0 # Ensure the full history is fetched for accurate diffing
-          ref: ${{fromJSON(steps.pr.outputs.result).merge_commit_sha}}
+          ref: ${{ github.event_name == 'pull_request_target' && fromJSON(steps.pr.outputs.result).merge_commit_sha || '' }}
 
       - name: Set execute permission for .sh files
         run: |
@@ -40,8 +41,8 @@ jobs:
       - name: Get changed files
         id: changed-files
         run: |
-          if ${{ github.event_name == 'pull_request' }}; then
-              echo "files=$(git diff --name-only -r HEAD^1 HEAD | grep -E '\.(sh|func)$' | xargs)" >> $GITHUB_OUTPUT
+          if ${{ github.event_name == 'pull_request_target' }}; then
+              echo "files=$(git diff --name-only ${{ github.event.pull_request.base.sha }} ${{ steps.pr.outputs.result && fromJSON(steps.pr.outputs.result).merge_commit_sha }} | xargs)" >> $GITHUB_OUTPUT
           else
               echo "files=$(git diff --name-only ${{ github.event.before }} ${{ github.event.after }} | grep -E '\.(sh|func)$' | xargs)" >> $GITHUB_OUTPUT
           fi
@@ -167,7 +168,7 @@ jobs:
           fi
 
       - name: Post results and comment
-        if: always() && steps.changed-files.outputs.files != '' && github.event_name == 'pull_request'
+        if: always() && steps.changed-files.outputs.files != '' && github.event_name == 'pull_request_target'
         uses: actions/github-script@v7
         with:
           script: |