name: PR Deploy

on:
  pull_request_review:
    types: [submitted]

concurrency:
  group: staging-deploy
  cancel-in-progress: false

permissions:
  contents: read
  deployments: write
  pull-requests: write

jobs:
  prepare:
    name: Prepare deployment
    runs-on: ubuntu-latest
    if: >
      github.event.review.state == 'approved' &&
      github.event.pull_request.head.repo.full_name == github.repository
    outputs:
      image_tag: ${{ steps.image.outputs.tag }}
      sha: ${{ github.event.pull_request.head.sha }}
      pr_number: ${{ github.event.pull_request.number }}
    
    steps:
      - name: Checkout PR
        uses: actions/checkout@v4
        with:
          ref: ${{ github.event.pull_request.head.sha }}
      
      - name: Get image tag
        id: image
        env:
          PR_NUMBER: ${{ github.event.pull_request.number }}
          PR_SHA: ${{ github.event.pull_request.head.sha }}
        run: |
          IMAGE_TAG="pr-${PR_NUMBER}-${PR_SHA:0:7}"
          echo "tag=$IMAGE_TAG" >> "$GITHUB_OUTPUT"

  deploy:
    name: Deploy to staging
    needs: prepare
    uses: ./.github/workflows/deploy-core.yml
    with:
      image_tag: ${{ needs.prepare.outputs.image_tag }}
      sha: ${{ needs.prepare.outputs.sha }}
      description: Deploy PR #${{ needs.prepare.outputs.pr_number }} to staging
      pr_number: ${{ needs.prepare.outputs.pr_number }}
    secrets: inherit

  comment:
    name: Comment deployment status
    needs: [prepare, deploy]
    if: always()
    runs-on: ubuntu-latest
    env:
      GH_TOKEN: ${{ github.token }}
      IMAGE_TAG: ${{ needs.prepare.outputs.image_tag }}
      PR_NUMBER: ${{ needs.prepare.outputs.pr_number }}
      REF_SHA: ${{ needs.prepare.outputs.sha }}
      STATUS: ${{ needs.deploy.outputs.status }}
    
    steps:
      - name: Comment on PR
        run: |
          if [ "$STATUS" = "success" ]; then
            BODY=$(jq -nr --arg tag "$IMAGE_TAG" --arg sha "$REF_SHA" --arg url "${GITHUB_SERVER_URL}/${GITHUB_REPOSITORY}/actions/runs/${GITHUB_RUN_ID}" \
              '"✅ **Staging deployment completed**\n\n🔗 **URL**: https://dev.opensourcepos.org\n📦 **Image Tag**: `\($tag)`\n🔨 **Commit**: \($sha)\n\nView logs: \($url)"')
          else
            BODY=$(jq -nr --arg url "${GITHUB_SERVER_URL}/${GITHUB_REPOSITORY}/actions/runs/${GITHUB_RUN_ID}" \
              '"❌ **Staging deployment failed**\n\nCheck the [workflow logs](\($url)) for details."')
          fi
          
          gh api "repos/${GITHUB_REPOSITORY}/issues/${PR_NUMBER}/comments" \
            -X POST \
            -f body="$BODY"