deploy-info-comment-on-pr.yml

name: Deployment Info Comment on PR

on:
  pull_request:
    types: [opened]

jobs:
  comment_on_pr:
    runs-on: ubuntu-latest
    env:
      GH_TOKEN: ${{ github.token }}
    steps:
      - name: Checkout PR branch
        uses: actions/checkout@v4

      - name: Wait for 3 seconds
        run: sleep 3

      - name: Check if Deploy Workflow is Running
        id: check_deploy
        run: |
          runs=$(gh run list --branch "${{ github.head_ref }}" \
                             --workflow "Deploy to Cloudflare Pages" \
                             --json status \
                             --jq '.[] | select(.status == "in_progress")' 2>/dev/null)

          if [[ -n "$runs" ]]; then
            echo "Deploy workflow is currently running. Exiting."
            echo "DEPLOY_STATUS=running" >> $GITHUB_ENV
            exit 0
          else
            echo "DEPLOY_STATUS=completed" >> $GITHUB_ENV
          fi

      - name: Add to Job Summaries if Deployment Running
        if: env.DEPLOY_STATUS == 'running'
        run: echo "✅ This workflow ended without executing anything because the deployment workflow was running." >> "$GITHUB_STEP_SUMMARY"

      - name: Get Latest Commit Hash
        if: env.DEPLOY_STATUS == 'completed'
        id: get_commit
        run: |
          COMMIT_HASH=$(gh pr view ${{ github.event.pull_request.number }} --json commits -q ".commits[-1].oid")
          echo "COMMIT_HASH=${COMMIT_HASH}" >> $GITHUB_ENV
          SHORT_COMMIT_HASH=${COMMIT_HASH:0:7}
          echo "SHORT_COMMIT_HASH=${SHORT_COMMIT_HASH}" >> $GITHUB_ENV

      - name: Output Latest Commit Hash
        if: env.DEPLOY_STATUS == 'completed'
        run: echo "Latest Commit Hash ... ${{ env.COMMIT_HASH }}"

      - name: Fetch latest deployment info and match with commit hash
        if: env.DEPLOY_STATUS == 'completed'
        env:
          CLOUDFLARE_API_TOKEN: ${{ secrets.CLOUDFLARE_API_TOKEN }}
          CLOUDFLARE_ACCOUNT_ID: ${{ secrets.CLOUDFLARE_ACCOUNT_ID }}
          CLOUDFLARE_PROJECT_NAME: ${{ secrets.CLOUDFLARE_PROJECT_NAME }}
        run: |
          response=$(curl -s -X GET "https://api.cloudflare.com/client/v4/accounts/$CLOUDFLARE_ACCOUNT_ID/pages/projects/$CLOUDFLARE_PROJECT_NAME/deployments" \
            -H "Authorization: Bearer $CLOUDFLARE_API_TOKEN" \
            -H "Content-Type: application/json")

          matching_deployment=$(echo "$response" | jq -r --arg commit "${{ env.COMMIT_HASH }}" '.result[] | select(.deployment_trigger.metadata.commit_hash == $commit)')

          if [ -z "$matching_deployment" ]; then
            echo "No deployment found for the latest commit hash."
            exit 1
          fi

          deployment_url=$(echo "$matching_deployment" | jq -r '.url')
          deployment_alias_url=$(echo "$matching_deployment" | jq -r '.aliases[0]')
          pages_deployment_id=$(echo "$matching_deployment" | jq -r '.id')

          echo "Matched Deploy URL: $deployment_url"
          echo "Deploy Alias URL: $deployment_alias_url"
          echo "Deploy ID: $pages_deployment_id"

          echo "LATEST_DEPLOY_URL=$deployment_url" >> $GITHUB_ENV
          echo "DEPLOY_ALIAS_URL=$deployment_alias_url" >> $GITHUB_ENV
          echo "DEPLOY_ID=$pages_deployment_id" >> $GITHUB_ENV

      - name: Create Comment Content
        if: env.DEPLOY_STATUS == 'completed'
        run: |
          {
            echo "GH_SAMPLE_COMMENT<<EOF"
            echo "<!-- DEPLOYMENT_COMMENT -->"
            echo "## Deploying ${{ secrets.CLOUDFLARE_PROJECT_NAME }} with &nbsp;<a href='https://pages.dev'><img alt='Cloudflare Pages' src='https://user-images.githubusercontent.com/23264/106598434-9e719e00-654f-11eb-9e59-6167043cfa01.png' width='16'></a> &nbsp;Cloudflare Pages"
            echo ""
            echo "<table><tr><td><strong>Latest commit:</strong> </td><td>"
            echo "<code>${{ env.SHORT_COMMIT_HASH }}</code>"
            echo "</td></tr>"
            echo "<tr><td><strong>Status:</strong></td><td>&nbsp;✅&nbsp; Deploy successful!</td></tr>"
            echo "<tr><td><strong>Preview URL:</strong></td><td>"
            echo "<a href='${{ env.LATEST_DEPLOY_URL }}'>${{ env.LATEST_DEPLOY_URL }}</a>"
            echo "</td></tr>"
            echo "<tr><td><strong>Branch Preview URL:</strong></td><td>"
            echo "<a href='${{ env.DEPLOY_ALIAS_URL }}'>${{ env.DEPLOY_ALIAS_URL }}</a>"
            echo "</td></tr>"
            echo "</table>"
            echo ""
            echo "[View logs](https://dash.cloudflare.com/?to=/:account/pages/view/${{ secrets.CLOUDFLARE_PROJECT_NAME }}/${{ env.DEPLOY_ID }})"
            echo "EOF"
          } >> "$GITHUB_ENV"

      - name: Add or Update Comment on Pull Request
        if: env.DEPLOY_STATUS == 'completed'
        run: |
          PR_NUMBER=${{ github.event.pull_request.number }}

          # Fetch existing comments
          COMMENTS=$(gh api repos/${{ github.repository }}/issues/${PR_NUMBER}/comments --jq '.[] | @base64')

          COMMENT_ID=""

          for COMMENT in $COMMENTS; do
            COMMENT_JSON=$(echo $COMMENT | base64 --decode)
            BODY=$(echo $COMMENT_JSON | jq -r '.body')
            ID=$(echo $COMMENT_JSON | jq -r '.id')

            if echo "$BODY" | grep -q '<!-- DEPLOYMENT_COMMENT -->'; then
              COMMENT_ID=$ID
              break
            fi
          done

          if [ -n "$COMMENT_ID" ]; then
            echo "Updating existing comment ID: $COMMENT_ID"
            gh api \
              --method PATCH \
              -H "Accept: application/vnd.github.v3+json" \
              /repos/${{ github.repository }}/issues/comments/$COMMENT_ID \
              -f body="${{ env.GH_SAMPLE_COMMENT }}"
          else
            echo "Creating new comment"
            gh pr comment $PR_NUMBER --body "${{ env.GH_SAMPLE_COMMENT }}"
          fi

      - name: Add to Job Summaries
        if: env.DEPLOY_STATUS == 'completed'
        run: echo "${{ env.GH_SAMPLE_COMMENT }}" >> "$GITHUB_STEP_SUMMARY"