preview.yml

# Disabled - requires FLY_API_TOKEN secret to be configured
# To re-enable: remove 'if: false' from the preview job

name: Preview Deployment

on:
  pull_request_target:
    types: [opened, synchronize, reopened]
  workflow_dispatch:
    inputs:
      pr_number:
        description: 'PR number to deploy'
        required: true

concurrency:
  group: preview-${{ github.event.pull_request.number || github.event.inputs.pr_number }}
  cancel-in-progress: true

permissions:
  contents: read
  pull-requests: write

env:
  FLY_API_TOKEN: ${{ secrets.FLY_API_TOKEN }}
  PREVIEW_APP: yaci-explorer-pr-${{ github.event.pull_request.number || github.event.inputs.pr_number }}

jobs:
  preview:
    if: false  # Disabled until FLY_API_TOKEN is configured
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
        with:
          ref: ${{ github.event.pull_request.head.sha }}

      - uses: superfly/flyctl-actions/setup-flyctl@master

      - name: Create or update preview app
        run: |
          if ! flyctl apps list | grep -q "$PREVIEW_APP"; then
            echo "Creating preview app: $PREVIEW_APP"
            flyctl apps create "$PREVIEW_APP" --org personal
          fi

          cat > fly.preview.toml << EOF
          app = "$PREVIEW_APP"
          primary_region = "sjc"

          [http_service]
            internal_port = 80
            force_https = true
            auto_stop_machines = "stop"
            auto_start_machines = true
            min_machines_running = 0
            processes = ["app"]

          [[vm]]
            memory = "256mb"
            cpu_kind = "shared"
            cpus = 1
          EOF

          flyctl deploy --config fly.preview.toml --remote-only --no-cache

      - name: Post preview URL
        uses: actions/github-script@v7
        with:
          script: |
            const previewUrl = `https://${process.env.PREVIEW_APP}.fly.dev`;
            const sha = context.payload.pull_request.head.sha.slice(0, 7);
            const timestamp = new Date().toISOString().replace('T', ' ').slice(0, 19) + ' UTC';
            const body = `**Preview deployment ready!**\n\n${previewUrl}\n\nLast deployed: \`${sha}\` at ${timestamp}`;

            const { data: comments } = await github.rest.issues.listComments({
              owner: context.repo.owner,
              repo: context.repo.repo,
              issue_number: context.issue.number,
            });

            const botComment = comments.find(c =>
              c.user.type === 'Bot' && c.body.includes('Preview deployment')
            );

            if (botComment) {
              await github.rest.issues.updateComment({
                owner: context.repo.owner,
                repo: context.repo.repo,
                comment_id: botComment.id,
                body: body
              });
            } else {
              await github.rest.issues.createComment({
                owner: context.repo.owner,
                repo: context.repo.repo,
                issue_number: context.issue.number,
                body: body
              });
            }