add-hip-number.yml

name: Assign HIP Number and Rename File

on:
  pull_request:
    types: [opened, synchronize]

defaults:
  run:
    shell: bash

permissions:
  contents: write
  issues: read
  pull-requests: write
  checks: write

jobs:
  assign-hip-number:
    runs-on: hiero-improvement-proposals-linux-medium
    continue-on-error: true  # Silently fail - don't show red X on PRs
    steps:
      - name: Harden Runner
        uses: step-security/harden-runner@fe104658747b27e96e4f7e80cd0a94068e53901d # v2.16.1
        with:
          egress-policy: audit

      - name: Checkout Code
        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
        with:
          token: ${{ secrets.GH_ACCESS_TOKEN }}
          fetch-depth: 0

      - name: Import GPG Key
        id: gpg_importer
        uses: step-security/ghaction-import-gpg@69c854a83c7f79463f8bdf46772ab09826c560cd # v6.3.1
        with:
          git_commit_gpgsign: true
          git_tag_gpgsign: true
          git_user_signingkey: true
          gpg_private_key: ${{ secrets.GPG_KEY_CONTENTS }}
          passphrase: ${{ secrets.GPG_KEY_PASSPHRASE }}

      - name: Identify if New HIP
        id: check-new
        run: |
          # Fetch the main branch to have all necessary references
          git fetch origin main

          # Get the modified files in the PR against the main branch
          MODIFIED_FILES=$(git diff --name-only origin/main...$GITHUB_SHA)
          echo "Modified files in PR: $MODIFIED_FILES"

          # Directory path to check for HIP files
          HIP_DIRECTORY='HIP'
          HIP_FILES=$(echo "$MODIFIED_FILES" | grep "^$HIP_DIRECTORY/.*\.md")
          echo "Filtered HIP files: $HIP_FILES"
          echo "::set-output name=hip-files::$HIP_FILES"

          # Check if any HIP files were modified
          if [ -z "$HIP_FILES" ]; then
            echo "No HIP files found in the PR."
            echo "::set-output name=new-hip::false"
            exit 0
          fi

          # Check each HIP file to see if it exists in the main branch
          NEW_HIP=true
          for file in $HIP_FILES; do
            if git ls-tree -r origin/main --name-only | grep -q "^$file$"; then
              echo "This PR modifies an existing HIP: $file"
              NEW_HIP=false
              break
            fi
          done

          if [ "$NEW_HIP" = "true" ]; then
            echo "This PR creates a new HIP."
            echo "::set-output name=new-hip::true"
          else
            echo "::set-output name=new-hip::false"
          fi

      - name: Assign HIP Number
        if: steps.check-new.outputs.new-hip == 'true'
        run: |
          # Extract the current PR number
          PR_NUMBER=${{ github.event.pull_request.number }}
          HIP_HEADER="hip: $PR_NUMBER"
          HIP_FILE=$(echo "${{ steps.check-new.outputs.hip-files }}" | head -n 1)

          echo "Assigning HIP number to file: $HIP_FILE"

          if [ -n "$HIP_FILE" ]; then
            sed -i "s/^hip:.*$/$HIP_HEADER/" "$HIP_FILE"
          else
            echo "No valid HIP file to assign a number. Skipping assignment."
            exit 0
          fi

      - name: Rename HIP File
        if: steps.check-new.outputs.new-hip == 'true'
        run: |
          # Extract PR number
          PR_NUMBER=${{ github.event.pull_request.number }}
          HIP_FILE=$(echo "${{ steps.check-new.outputs.hip-files }}" | head -n 1)

          if [ -n "$HIP_FILE" ]; then
            NEW_HIP_FILE="HIP/hip-$PR_NUMBER.md"
            mv "$HIP_FILE" "$NEW_HIP_FILE"
          else
            echo "No HIP file found to rename. Skipping rename."
            exit 0
          fi

      - name: Commit Changes
        if: steps.check-new.outputs.new-hip == 'true'
        run: |
          git config --global user.name 'GitHub Action'
          git config --global user.email 'action@github.com'

          PR_NUMBER=${{ github.event.pull_request.number }}
          git add HIP/

          # Check if there are changes to commit
          if git diff --cached --quiet; then
            echo "No changes to commit. Skipping."
            exit 0
          fi

          git commit -sSm "Assigning HIP $PR_NUMBER and renaming file to hip-$PR_NUMBER.md" || {
            echo "Commit failed. This may be expected for PRs from forks."
            exit 0
          }

          git push origin HEAD:${{ github.head_ref }} || {
            echo "Push failed. This is expected for PRs from forks without write access."
            echo "The PR author will need to manually update their branch."
            exit 0
          }