preview.yml

name: Preview

on:
  issue_comment:
    types: [created]
  pull_request:
    branches: [main]

jobs:
  check:
    runs-on: ubuntu-latest
    outputs:
      triggered: ${{ steps.check.outputs.triggered }}
      triggered_by_ci: ${{ steps.checkCI.outputs.triggered }}
    steps:
      - name: Check if the comment was a command, and react with 👀 if it was
        if: github.event.issue.pull_request
        uses: famly/pull-request-comment-trigger@master
        id: check
        with:
          trigger: "/preview"
          reaction: eyes
          prefix_only: true
        env:
          GITHUB_TOKEN: "${{ secrets.CI_GITHUB_TOKEN }}"
      - name: Check if it was CI comment
        if: github.event.issue.pull_request
        uses: famly/pull-request-comment-trigger@master
        id: checkCI
        with:
          trigger: "/preview CI"
        env:
          GITHUB_TOKEN: "${{ secrets.CI_GITHUB_TOKEN }}"
      - name: Check if it was pull request open to main branch
        if: github.event_name == 'pull_request' && github.actor != 'dependabot[bot]'
        uses: marocchino/sticky-pull-request-comment@v2
        with:
          recreate: true
          number: ${{ github.event.issue.number || github.event.pull_request.number }}
          GITHUB_TOKEN: ${{ secrets.CI_GITHUB_TOKEN }}
          message: |
            /preview CI

  run-preview:
    runs-on: ubuntu-latest
    needs: [check]
    if: ${{ needs.check.outputs.triggered == 'true' }}
    concurrency:
      group: ${{ github.event.issue.number || github.event.pull_request.number }}
      cancel-in-progress: true
    steps:
      - name: Add info about starting new preview
        uses: marocchino/sticky-pull-request-comment@v2
        with:
          recreate: true
          number: ${{ github.event.issue.number || github.event.pull_request.number }}
          GITHUB_TOKEN: ${{ secrets.CI_GITHUB_TOKEN }}
          message: |
            **🖼️ Preview Environment:** _Starting..._

      - name: Extract current commit
        id: sha
        uses: actions/github-script@v7
        with:
          result-encoding: string
          script: |
            const { owner, repo, number: pull_number } = context.issue;
            const pr = await github.rest.pulls.get({
              owner,
              repo,
              pull_number,
            });
            return pr.data.head.sha
      - uses: actions/checkout@v3
        with:
          ref: ${{ steps.sha.outputs.result }}

      - uses: actions/setup-node@v3
        with:
          node-version: 20

      - name: Start frontend tunnel
        id: expose-tunnel
        uses: codetalkio/expose-tunnel@v1.4.0
        with:
          service: localhost.run
          port: 3000
      - name: Fix tunnel url
        id: tunnel-url
        run: |
          url=${{ steps.expose-tunnel.outputs.tunnel-url }}
          fixedUrl=${url::-6}
          echo "tunnel-url=${fixedUrl}" >> $GITHUB_OUTPUT

      - name: Hide preview comment
        uses: actions/github-script@v7
        if: ${{ needs.check.outputs.triggered_by_ci != 'true' }}
        with:
          result-encoding: string
          github-token: ${{ secrets.CI_GITHUB_TOKEN }}
          script: |
            const { node_id } = context.payload.comment; 

            const query = `
              mutation minimizeComment($id: ID!) {
                minimizeComment(input: { classifier: OUTDATED, subjectId: $id }) {
                  clientMutationId
                }
              }
            `;

            await github.graphql(query, { id: node_id });

      - name: Add info about dependency install
        uses: marocchino/sticky-pull-request-comment@v2
        with:
          recreate: true
          number: ${{ github.event.issue.number || github.event.pull_request.number }}
          GITHUB_TOKEN: ${{ secrets.CI_GITHUB_TOKEN }}
          message: |
            **🖼️ Preview Environment:** _Installing dependencies..._
      - name: Install
        run: npm ci
      - name: Cache build
        uses: actions/cache@v3
        with:
          path: ${{ github.workspace }}/frontend/.next/cache
          key: ${{ runner.os }}-nextjs-${{ hashFiles('**/yarn.lock') }}-${{ hashFiles('**.[jt]s', '**.[jt]sx') }}
          restore-keys: |
            ${{ runner.os }}-nextjs-${{ hashFiles('**/package-lock.json') }}-

      - name: Add info about build
        uses: marocchino/sticky-pull-request-comment@v2
        with:
          number: ${{ github.event.issue.number || github.event.pull_request.number }}
          recreate: true
          GITHUB_TOKEN: ${{ secrets.CI_GITHUB_TOKEN }}
          message: |
            **🖼️ Preview Environment:** _Building..._
      - name: Build frontend
        run: |
          touch .env
          echo NEXT_PUBLIC_DIRECTUS_URL="https://directus.universe.nexus" >> .env
          npm run build

      - name: Starting app
        run: npm start &

      - name: Comment PR
        uses: marocchino/sticky-pull-request-comment@v2
        with:
          number: ${{ github.event.issue.number || github.event.pull_request.number }}
          recreate: true
          GITHUB_TOKEN: ${{ secrets.CI_GITHUB_TOKEN }}
          message: |
            **🖼️ Preview Environment:** ${{ steps.tunnel-url.outputs.tunnel-url }}

              You can stop the preview by clicking "Cancel" on the [GitHub Action](${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}).

      - name: Wait for 60 minutes before timing out (unless overwritten)
        run: |
          echo "Tunnel URL is ${{ steps.tunnel-url.outputs.tunnel-url }}"
          timeout 61m sleep 3600
          # Gracefully exit if the timeout hits.
          exit 0

      - name: Close comment
        uses: marocchino/sticky-pull-request-comment@v2
        if: ${{ success() }}
        with:
          recreate: true
          number: ${{ github.event.issue.number || github.event.pull_request.number }}
          GITHUB_TOKEN: ${{ secrets.CI_GITHUB_TOKEN }}
          message: |
            🖼️ Preview Environment exceeded the maximum time of 60 minutes. To start it again, comment `/preview` on this PR.
      - name: Close comment when cancelled
        uses: marocchino/sticky-pull-request-comment@v2
        if: ${{ cancelled() }}
        with:
          recreate: true
          number: ${{ github.event.issue.number || github.event.pull_request.number }}
          GITHUB_TOKEN: ${{ secrets.CI_GITHUB_TOKEN }}
          message: |
            🖼️ Preview Environment was cancelled (because of newer preview or manual cancellation). To start it again, comment `/preview` on this PR.
      - name: Close comment when failed
        uses: marocchino/sticky-pull-request-comment@v2
        if: ${{ failure() }}
        with:
          recreate: true
          number: ${{ github.event.issue.number || github.event.pull_request.number }}
          GITHUB_TOKEN: ${{ secrets.CI_GITHUB_TOKEN }}
          message: |
            🖼️ Preview Environment failed to start. You can see more info here [GitHub Action](${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}). To start it again, comment `/preview` on this PR.