name: Validate tofu formatting monthly

on:
  schedule:
    # Runs at 00:00 UTC on the first day of every month
    - cron: "0 0 1 * *"
  # Allows you to run this workflow manually from the Actions tab
  workflow_dispatch:

jobs:
  check_all:
    name: Check all tofu file formatting
    runs-on: ubuntu-latest
    # Permissions needed for the job
    permissions:
      contents: read # To check out the code

    steps:
      - name: Checkout code
        uses: actions/checkout@eef61447b9ff4aafe5dcd4e0bbf5d482be7e7871 # v4.2.1

      - name: Setup OpenTofu
        uses: opentofu/setup-opentofu@592200bd4b9bbf4772ace78f887668b1aee8f716 # v1.0.5
        with:
          tofu_version: latest

      - name: Validate tofu fmt for all files in tofu/ directory
        run: |
          # Allow the script to continue even if tofu fmt fails for one file
          set +e

          # Initialize overall check status (0 = success, 1 = failure)
          CHECK_STATUS=0

          echo "Searching for and checking .tofu and .tfvars files in the 'tofu/' directory recursively..."
          echo "### Tofu Format Check Results" >> $GITHUB_STEP_SUMMARY # Add a header to the summary

          # Use find to locate files and pipe them safely to a while loop
          # This handles filenames with spaces or special characters correctly.
          find tofu/ -type f \( -name '*.tofu' -o -name '*.tfvars' \) -print0 | while IFS= read -r -d $'\0' file; do
            echo "Checking tofu fmt on ${file}..." # Log which file is being checked

            # Run tofu fmt in check mode. It exits with non-zero status if formatting is needed.
            tofu fmt -check "${file}"
            FMT_STATUS=$?

            # If tofu fmt failed (exit status is not 0)
            if [[ $FMT_STATUS -ne 0 ]]; then
              # Add a failure message to the GitHub Actions summary
              echo "❌ **${file}**: Needs formatting. Run \`tofu fmt\`." >> $GITHUB_STEP_SUMMARY
              # Update the overall check status to failure
              CHECK_STATUS=1
            else
              # Add a success message to the GitHub Actions summary
              echo "✅ **${file}**: Formatted correctly." >> $GITHUB_STEP_SUMMARY
            fi
          done

          # Exit the step with the final check status
          # If CHECK_STATUS is 1, the step (and job) will fail. If 0, it succeeds.
          echo "Final check status: ${CHECK_STATUS}"
          exit ${CHECK_STATUS}