snapshot.yml

name: Snapshot
on:
  issue_comment:
    types: [created]

concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: false

jobs:
  snapshot:
    name: Snapshot
    if: ${{ github.event.issue.pull_request && startsWith(github.event.comment.body, '/snapshot') }}
    runs-on: ubuntu-latest
    timeout-minutes: 10
    steps:
      - name: Enforce permission requirement
        uses: prince-chrismc/check-actor-permissions-action@v3
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          permission: write

      - name: Extract snapshot command
        id: command
        env:
          COMMENT: ${{ github.event.comment.body }}
        run: |
          if [[ $COMMENT =~ ^/snapshot([[:space:]]([a-z]{3,12}))?$ ]]; then
            snapshot="${BASH_REMATCH[2]:-snapshot}"
            echo "snapshot=$snapshot" >> $GITHUB_OUTPUT
          else
            exit 1
          fi

      - name: Initial comment
        id: comment
        uses: peter-evans/create-or-update-comment@v3
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          issue-number: ${{ github.event.issue.number }}
          body: |
            **Alright @${{ github.actor }}, I'm working on the snapshot!**
            
            You can follow the progress [here](${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}).

      - name: Checkout default branch
        uses: actions/checkout@v2
  
      - name: Checkout pull request branch
        run: gh pr checkout ${{ github.event.issue.number }}
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

      - name: Get current branch name
        id: branch  
        run: echo "branch=$(git branch --show-current)" >> $GITHUB_OUTPUT

      - name: Retrieve changeset entries
        if: ${{ steps.branch.outputs.branch == 'changeset-release/main' }}
        run: git checkout origin/main

      - name: Install dependencies
        uses: ./.github/actions/setup
        with:
          cachixAuthToken: ${{ secrets.CACHIX_AUTH_TOKEN }}

      - name: Exit pre-release mode
        if: ${{ hashFiles('.changeset/pre.json') != '' }}
        run: pnpm changeset pre exit

      - name: Version snapshot
        run: pnpm changeset version --snapshot ${{ steps.command.outputs.snapshot }} | grep -q "All files have been updated"
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

      - name: Build snapshot
        run: pnpm build
 
      - name: Set registry config
        run: pnpm config set --location project "//registry.npmjs.org/:_authToken" "${{ secrets.NPM_TOKEN }}"

      - name: Publish snapshot
        id: snapshot
        run: |
          # Publish and extract published tags from stdout.
          output=$(pnpm changeset publish --tag ${{ steps.command.outputs.snapshot }} --no-git-tag)
          output=$(echo "$output" | awk '/packages published successfully:/{flag=1; next} flag')
          output=$(echo "$output" | grep -o '@[^ ]*' | awk '{print "\"" $0 "\""}' | paste -sd ',')
          echo "tags=[$output]" >> $GITHUB_OUTPUT

      - name: Update comment (success)
        uses: actions/github-script@v6
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          script: |
            const commands = ${{ steps.snapshot.outputs.tags }}.map(tag => '```sh\n' + `pnpm add ${tag}` + '\n```')
            const header = `**Good news @${{ github.actor }}, your snapshot has been published!**`
            const footer = `You can review the build log [here](${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}).`

            await github.rest.issues.updateComment({
              comment_id: ${{ steps.comment.outputs.comment-id }},
              owner: context.repo.owner,
              repo: context.repo.repo,
              body: `${header}\n\n${commands.join('\n')}\n\n${footer}`
            })

      - name: Update comment (failure)
        if: failure()
        uses: peter-evans/create-or-update-comment@v3
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          comment-id: ${{ steps.comment.outputs.comment-id }}
          edit-mode: replace
          body: |
            **Sorry @${{ github.actor }}, I failed to publish the snapshot!**
            
            You can review the build log [here](${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}).