merge.yml

name: Run Merge Script

on:
  workflow_dispatch:
  # run after layout verification
  workflow_run:
    workflows: ["Run Layout Verification"]
    types:
      - completed

jobs:
  merge:
    # only run the merge script on the SiEPIC account  
    #if: github.repository_owner == 'SiEPIC'
      # if: >-
      # github.event.pull_request.user.login != 'SiEPIC' &&
      # repository_dispatch.organization
    runs-on: ubuntu-latest

    steps:
      - name: checkout repo content
        uses: actions/checkout@v2
        with:
          # https://github.com/MestreLion/git-tools?tab=readme-ov-file#git-restore-mtime
          fetch-depth: 0

      - name: download verification trigger artifact
        uses: dawidd6/action-download-artifact@v2
        with:
          run_id: ${{ github.event.workflow_run.id }}
          name: verification-trigger
          path: .
          search_artifacts: true
        if: github.event_name != 'workflow_dispatch'

      - name: check if verification action was triggered by a pull request
        run: |
          trigger_info=$(cat trigger_info.txt)
          echo $trigger_info
          if [[ "$trigger_info" == "pull_request" || "$trigger_info" == "pull_request_target" ]]; then
            echo "This workflow was triggered by a pull request. Do not update url in read me."
            TRIGGER_INFO='pull request'
            echo "TRIGGER_INFO=$TRIGGER_INFO" >> $GITHUB_ENV
          else
            echo "This workflow was not triggered by a pull request. Continue with merge and update url in read me."
          fi
        if: github.event_name != 'workflow_dispatch'

      # there is only an artifact to download if this action is triggered after the verification action
      # if it is manually triggered we set the var trigger_info manually 
      - name: if this action was manually triggered set trigger_info var
        run: |
          trigger_info='workflow_dispatch'
          echo "TRIGGER_INFO=$trigger_info" >> $GITHUB_ENV
        if: github.event_name == 'workflow_dispatch'


      - name: Restore original modification time of files based on the date of the most recent commit
        uses: chetan/git-restore-mtime-action@v2
        #run: |
        #  # https://github.com/MestreLion/git-tools?tab=readme-ov-file#installation
        #  sudo apt install git-restore-mtime
        #  git restore-mtime

      # can also specify Python version if needed
      - name: setup python
        uses: actions/setup-python@v5
        with:
          python-version: '3.11' 
          cache: 'pip'

      - name: install Python packages
        run: |
          pip install klayout SiEPIC siepic_ebeam_pdk pandas
          
      - name: run merge script
        run: |

          python merge/EBeam_merge.py

      - name: move merge output files to new folder
        run: |
          #output_files="EBeam.gds EBeam.oas EBeam.txt EBeam.coords"
          output_files="EBeam.oas EBeam.txt"

          IFS=' '

          mkdir -p merge_output

          for file in $output_files; do
            cp "merge/$file" merge_output/
          done

      - name: upload artifact
        uses: actions/upload-artifact@v4
        id: artifact-upload
        with:
          name: merge-files
          path: merge_output/

      - name: get artifact url
        run: |
          IFS='/' read -ra REPO <<< "$GITHUB_REPOSITORY"
          OWNER="${REPO[0]}"
          REPO_NAME="${REPO[1]}"
          echo "Owner: $OWNER"
          echo "Repository: $REPO_NAME"

          RUN_ID=${{ github.run_id }}
          ARTIFACT_ID=${{ steps.artifact-upload.outputs.artifact-id }}
          ARTIFACT_URL="https://github.com/$OWNER/$REPO_NAME/actions/runs/$RUN_ID/artifacts/$ARTIFACT_ID"
          echo "Artifact URL: $ARTIFACT_URL"

          echo "ARTIFACT_URL=$ARTIFACT_URL" >> $GITHUB_ENV
          echo "OWNER=$OWNER" >> $GITHUB_ENV

      - name: update url in runner README
        run: |
          start_delim="<!-- start-link -->"
          end_delim="<!-- end-link -->"

          # remove current URL
          sed -i "/$start_delim/,/$end_delim/d" README.md

          # add new URL
          printf "$start_delim\n$ARTIFACT_URL\n$end_delim\n" >> README.md

      # merge script always runs on any PR
      # this ensures link is only updated after a PR is merged into SiEPIC
      - name: commit and push changes to README if we are in SiEPIC repo
        run: |
          git pull origin main
          git diff
          git config --local user.email "${{ github.actor }}@users.noreply.github.com"
          git config --local user.name "${{ github.actor }}"
          git add README.md
          git commit -m "update README with new artifact url $ARTIFACT_URL"
          git push
        if: env.TRIGGER_INFO != 'pull request' && github.repository_owner == 'SiEPIC'