ci(check-variables): print a warning if a GITHUB_* variable from this action already exists (#155)

Author: rlespinasse

.github/workflows/check-variables.yml

@@ -0,0 +1,139 @@
+---
+name: Compare GitHub Variables
+
+on:
+  workflow_dispatch: # Manual trigger
+  schedule:
+    - cron: "0 0 * * 1" # Weekly on Monday at midnight
+  pull_request:
+
+permissions: read-all
+
+jobs:
+  compare-variables:
+    runs-on: ubuntu-latest
+    permissions:
+      issues: write
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Load environment variables for testing
+        uses: rlespinasse/github-slug-action@v5
+        with:
+          prefix: TEST_
+
+      - name: Compare GitHub variables
+        id: compare
+        run: |
+          # Initialize arrays to store results
+          MISMATCHED_VARS=()
+          TEST_VALUES=()
+          ACTUAL_VALUES=()
+
+          # Get all environment variables
+          ALL_ENV=$(env)
+
+          # Extract TEST_GITHUB variables
+          TEST_VARS=$(echo "$ALL_ENV" | grep "^TEST_GITHUB_" | cut -d= -f1)
+
+          # Check for mismatches
+          for TEST_VAR in $TEST_VARS; do
+          # Get the corresponding GITHUB variable name
+          GITHUB_VAR=${TEST_VAR/TEST_GITHUB_/GITHUB_}
+
+          # Get the values
+          TEST_VALUE="${!TEST_VAR}"
+
+          # Check if the GITHUB variable exists
+          if [[ -n "${!GITHUB_VAR+x}" ]]; then
+            GITHUB_VALUE="${!GITHUB_VAR}"
+
+            # Compare values
+            if [[ "$TEST_VALUE" != "$GITHUB_VALUE" ]]; then
+              MISMATCHED_VARS+=("$TEST_VAR vs $GITHUB_VAR")
+              TEST_VALUES+=("$TEST_VALUE")
+              ACTUAL_VALUES+=("$GITHUB_VALUE")
+              echo "Mismatch found: $TEST_VAR=$TEST_VALUE, $GITHUB_VAR=$GITHUB_VALUE"
+            else
+              echo "Match: $TEST_VAR=$TEST_VALUE, $GITHUB_VAR=$GITHUB_VALUE"
+            fi
+          else
+            echo "Skipping $TEST_VAR as $GITHUB_VAR does not exist"
+          fi
+          done
+
+          # Set output for next steps
+          if [[ ${#MISMATCHED_VARS[@]} -gt 0 ]]; then
+          echo "has_mismatches=true" >>"$GITHUB_OUTPUT"
+
+          # Create a JSON array of mismatched variables for the issue
+          MISMATCHED_JSON=$(printf '"%s",' "${MISMATCHED_VARS[@]}" | sed 's/,$//')
+          MISMATCHED_JSON="[$MISMATCHED_JSON]"
+          echo "mismatched_vars=$MISMATCHED_JSON" >>"$GITHUB_OUTPUT"
+
+          # Create a JSON array of test values
+          TEST_JSON=$(printf '"%s",' "${TEST_VALUES[@]}" | sed 's/,$//')
+          TEST_JSON="[$TEST_JSON]"
+          echo "test_values=$TEST_JSON" >>"$GITHUB_OUTPUT"
+
+          # Create a JSON array of actual values
+          ACTUAL_JSON=$(printf '"%s",' "${ACTUAL_VALUES[@]}" | sed 's/,$//')
+          ACTUAL_JSON="[$ACTUAL_JSON]"
+          echo "actual_values=$ACTUAL_JSON" >>"$GITHUB_OUTPUT"
+
+          # Create summary table
+          {
+            echo "## GitHub Variable Mismatches";
+            echo "| Variable Pair | TEST Value | GITHUB Value |";
+            echo "| ------------- | ---------- | ------------ |";
+          } >>"$GITHUB_STEP_SUMMARY"
+
+          for i in "${!MISMATCHED_VARS[@]}"; do
+            echo "| ${MISMATCHED_VARS[$i]} | ${TEST_VALUES[$i]} | ${ACTUAL_VALUES[$i]} |" >>"$GITHUB_STEP_SUMMARY"
+          done
+          else
+          echo "has_mismatches=false" >>"$GITHUB_OUTPUT"
+          echo "## All GitHub Variables Match" >>"$GITHUB_STEP_SUMMARY"
+          echo "All action GITHUB_ variables match their official GITHUB_ counterparts." >>"$GITHUB_STEP_SUMMARY"
+          fi
+        shell: bash
+
+      - name: Create issue for mismatches
+        if: steps.compare.outputs.has_mismatches == 'true' && github.event_name != 'pull_request'
+        uses: actions/github-script@v6
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          script: |
+            const mismatchedVars = JSON.parse('${{ steps.compare.outputs.mismatched_vars }}');
+            const testValues = JSON.parse('${{ steps.compare.outputs.test_values }}');
+            const actualValues = JSON.parse('${{ steps.compare.outputs.actual_values }}');
+
+            // Create table for issue body
+            let tableBody = '| Variable Pair | TEST Value | GITHUB Value |\n';
+            tableBody += '| ------------- | ---------- | ------------ |\n';
+
+            for (let i = 0; i < mismatchedVars.length; i++) {
+              tableBody += `| ${mismatchedVars[i]} | ${testValues[i]} | ${actualValues[i]} |\n`;
+            }
+
+            // Create the issue
+            const issueTitle = `GitHub Variable Mismatches Detected - ${new Date().toISOString().split('T')[0]}`;
+            const issueBody = `## GitHub Variable Mismatches Detected\n\nThe following mismatches were found between the action **GITHUB_** variables and their official **GITHUB_** counterparts:\n\n${tableBody}\n\nPlease review these discrepancies and update the test variables as needed.`;
+
+            await github.rest.issues.create({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              title: issueTitle,
+              body: issueBody,
+              labels: ['bug']
+            });
+
+            console.log('Issue created for GitHub variable mismatches');
+
+      - name: Fail workflow if mismatches detected
+        if: steps.compare.outputs.has_mismatches == 'true' && github.event_name == 'pull_request'
+        run: |
+          echo "::error::GitHub variable mismatches detected! See the summary for details."
+          exit 1