auto-add-id.yml

name: "Auto Add Post ID"

on:
  workflow_dispatch:
  push:
    branches:
      - main
    paths:
      - "content/posts/**.md"
  pull_request:
    branches:
      - main
    paths:
      - "content/posts/**.md"

env:
  repo: mildronize/blog-v8
  working_directory: "tmp-site"
  snippets_directory: "snippets"
  # Version of Zola available in GitHub releases.
  # Ref: https://www.getzola.org/documentation/deployment/gitlab-pages/
  ZOLA_VERSION: "0.19.2"

jobs:
  add-post-id:
    name: Add Post ID
    runs-on: ubuntu-latest
    steps:
      - name: Determine working branch name
        run: |
          if [[ "${{ github.event_name }}" == "pull_request" ]]; then
              echo "BRANCH_NAME=${{ github.event.pull_request.head.ref  }}" >> $GITHUB_ENV
          elif [[ "${{ github.event_name }}" == "push" ]]; then
              echo "BRANCH_NAME=${{ github.ref_name  }}" >> $GITHUB_ENV
          else
              echo "Only push and pull_request events are supported"
              exit 1
          fi

      - name: Setup branch name
        run: |
          echo "new_branch_name=$BRANCH_NAME.auto-add-post-id-$(date +%s)" >> $GITHUB_ENV
        shell: bash

      - name: Clone Project
        run: |
          git clone https://${{ secrets.GH_TOKEN }}@github.com/${{ env.repo }} ${{ env.working_directory }}
          cd ${{ env.working_directory }} && git submodule update --init --recursive

      - name: Checkout Branch
        run: git checkout ${{ env.BRANCH_NAME }}
        working-directory: ${{ env.working_directory }}

      - uses: oven-sh/setup-bun@v2

      - name: Install Zola
        run: |
          zola_url="https://github.com/getzola/zola/releases/download/v$ZOLA_VERSION/zola-v$ZOLA_VERSION-x86_64-unknown-linux-gnu.tar.gz"
          if ! wget --quiet --spider $zola_url; then
            echo "A Zola release with the specified version could not be found.";
            exit 1;
          fi
          wget $zola_url
          tar -xzf *.tar.gz

      - name: Install Scripts Dependencies
        run: bun install
        working-directory: ${{ env.working_directory }}/${{ env.snippets_directory }}

      - name: Add Post ID
        id: add-post-id
        run: |
          bun run add-id
        working-directory: ${{ env.working_directory }}/${{ env.snippets_directory }}
      
      - name: Setup Git Message & Pull Request Title
        run: |
          echo "git_message=content: ${{ steps.add-post-id.outputs.added-id-message }}" >> $GITHUB_ENV
        shell: bash

      - name: Zola Build
        run: |
          ../zola build
        working-directory: ${{ env.working_directory }}

      - name: Setup Git
        run: |
          git config --global user.email "${{ env.git_email }}"
          git config --global user.name "${{ env.git_name }}"
          git checkout -b ${{ env.new_branch_name }}
        working-directory: ${{ env.working_directory }}
        env:
          git_email: github-action-bot@thadaw.com
          git_name: Add Post ID

      - name: Commit Change & Push
        if: steps.add-post-id.outputs.added-id-is-updated == 'true'
        run: |
          git add --all content
          git restore --staged snippets/bun.lockb
          git diff --quiet && git diff --staged --quiet || git commit -am "${{ env.git_message }}"
          git push --set-upstream origin ${{ env.new_branch_name }}
        working-directory: ${{ env.working_directory }}

      - name: Create Pull Request & Merge if possible
        if: steps.add-post-id.outputs.added-id-is-updated == 'true'
        run: |
          gh pr create \
            --title "${{ env.git_message }}" \
            --body "${{ steps.add-post-id.outputs.added-id-details }}" \
            --base ${{ env.BRANCH_NAME }} \
            --head ${{ env.new_branch_name }} \
            --repo "${{ env.repo }}"

          retry=1
          while [ $retry -lt 10 ]
          do
              pr_number=`gh pr view ${{ env.new_branch_name }} --repo "${{ env.repo }}" --json number | jq '.number'`
              if [ "$pr_number" != "" ]; then
                  break
              fi
              echo "Retry to get PR number... ($retry)"
              sleep 3
              retry=$(( $retry + 1 ))
          done

          if [ $retry -eq 10 ]
          then
              echo "Exceed limit retry"
              exit 1
          fi

          echo "PR Number: $pr_number"
          gh pr merge $pr_number \
            --merge \
            --delete-branch \
            --repo ${{ env.repo }}

        env:
          GITHUB_TOKEN: ${{ secrets.GH_TOKEN }}