deploy-preview.yml

name: Publish preview on CF Pages

on:
  pull_request_target:

permissions:
  contents: read
  pages: write
  id-token: write
  issues: write
  pull-requests: write

jobs:
  deploy-preview:
    runs-on: ubuntu-latest

    steps:
      - name: Clone repository
        uses: actions/checkout@v4
        with:
          ref: ${{ github.event.pull_request.head.sha }}

      - name: Setup Deno environment
        uses: denoland/setup-deno@v1
        with:
          deno-version: v1.x

      - name: Build site
        run: deno task build
        env:
          GITHUB_TOKEN: ${{ secrets.TOKEN }}
      
      - name: Deploy to CF Pages
        id: deploy-preview
        uses: cloudflare/wrangler-action@v3
        env:
          API_TOKEN: ${{ secrets.CLOUDFLARE_API_TOKEN }}
          ACCOUNT_ID: ${{ secrets.CLOUDFLARE_ACCOUNT_ID }}
          GITHUB_TOKEN: ${{ secrets.GH_PAT }}
          BRANCH_NAME: ${{ github.head_ref || github.ref_name }}
        with:
          apiToken: ${{ env.API_TOKEN }}
          accountId: ${{ env.ACCOUNT_ID }}
          command: pages deploy 'target' --project-name=${{ github.event.repository.name }} --branch=${{ BRANCH_NAME }}

      - name: Report preview environment in PR
        uses: actions/github-script@v6
        with:
          github-token: ${{ secrets.GH_PAT }}
          script: |
            let comments = await github.rest.issues.listComments({
              issue_number: context.issue.number,
              owner: context.repo.owner,
              repo: context.repo.repo,
            });

            let previousComment = comments.data.find((i) => i.user.login === "probe-rs-bot");

            if(!previousComment) {
              await github.rest.issues.createComment({
                issue_number: context.issue.number,
                owner: context.repo.owner,
                repo: context.repo.repo,
                body: '# [Preview](${{ steps.deploy-preview.outputs.alias }})'
              })
            } else {
              await github.rest.issues.updateComment({
                issue_number: context.issue.number,
                owner: context.repo.owner,
                repo: context.repo.repo,
                comment_id: previousComment.id,
                body: '# [Preview](${{ steps.deploy-preview.outputs.alias }})'
              })
            }