---
name: 'CI: Vercel Website Preview'

on:
  pull_request:
    types: [opened, synchronize, reopened]
    paths:
      - 'apps/website/**'
      - 'packages/design-system/**'
      - 'packages/tailwind-utils/**'
  push:
    branches: [main]
    paths:
      - 'apps/website/**'
      - 'packages/design-system/**'
      - 'packages/tailwind-utils/**'

env:
  VERCEL_ORG_ID: ${{ secrets.VERCEL_WEBSITE_ORG_ID }}
  VERCEL_PROJECT_ID: ${{ secrets.VERCEL_WEBSITE_PROJECT_ID }}
  VERCEL_TOKEN: ${{ secrets.VERCEL_WEBSITE_TOKEN }}
  VERCEL_SCOPE: comfyui

concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

jobs:
  deploy-preview:
    if: github.event_name == 'pull_request'
    runs-on: ubuntu-latest
    permissions:
      contents: read
    env:
      ALIAS_HOST: comfy-website-preview-pr-${{ github.event.pull_request.number }}.vercel.app
    steps:
      - name: Checkout repository
        uses: actions/checkout@v6

      - name: Install pnpm
        uses: pnpm/action-setup@fc06bc1257f339d1d5d8b3a19a8cae5388b55320 # v4.4.0

      - name: Setup Node
        uses: actions/setup-node@v6
        with:
          node-version-file: '.nvmrc'

      - name: Install Vercel CLI
        run: npm install --global vercel@latest

      - name: Pull Vercel environment information
        run: vercel pull --yes --environment=preview

      - name: Build project artifacts
        run: vercel build

      - name: Fetch head commit metadata
        id: head-commit
        uses: actions/github-script@v8
        with:
          script: |
            const { data } = await github.rest.repos.getCommit({
              owner: context.repo.owner,
              repo: context.repo.repo,
              ref: context.payload.pull_request.head.sha,
            })
            const author = data.author?.login || data.commit.author?.name || ''
            const message = (data.commit.message || '').split('\n', 1)[0]
            core.setOutput('author', author)
            core.setOutput('message', message)

      - name: Deploy project artifacts to Vercel
        id: deploy
        env:
          GIT_COMMIT_REF: ${{ github.event.pull_request.head.ref }}
          GIT_COMMIT_SHA: ${{ github.event.pull_request.head.sha }}
          GIT_AUTHOR_LOGIN: ${{ steps.head-commit.outputs.author }}
          GIT_COMMIT_MESSAGE: ${{ steps.head-commit.outputs.message }}
          GIT_PR_ID: ${{ github.event.pull_request.number }}
          GIT_REPO: ${{ github.repository }}
        run: |
          URL=$(vercel deploy --prebuilt \
            --meta githubCommitRef="$GIT_COMMIT_REF" \
            --meta githubCommitSha="$GIT_COMMIT_SHA" \
            --meta githubCommitAuthorLogin="$GIT_AUTHOR_LOGIN" \
            --meta githubCommitMessage="$GIT_COMMIT_MESSAGE" \
            --meta githubPrId="$GIT_PR_ID" \
            --meta githubRepo="$GIT_REPO")
          echo "url=$URL" >> "$GITHUB_OUTPUT"

      - name: Alias deployment to stable PR hostname
        id: alias-set
        continue-on-error: true
        env:
          DEPLOY_URL: ${{ steps.deploy.outputs.url }}
        run: |
          vercel alias set "$DEPLOY_URL" "$ALIAS_HOST" --scope="$VERCEL_SCOPE"

      - name: Publish preview outputs
        env:
          DEPLOY_URL: ${{ steps.deploy.outputs.url }}
          ALIAS_OK: ${{ steps.alias-set.outcome == 'success' }}
        run: |
          if [[ "$ALIAS_OK" == "true" ]]; then
            STABLE_URL="https://$ALIAS_HOST"
          else
            STABLE_URL="$DEPLOY_URL"
          fi
          mkdir -p temp/vercel-preview
          echo "$DEPLOY_URL" > temp/vercel-preview/url.txt
          echo "$STABLE_URL" > temp/vercel-preview/stable-url.txt
          {
            echo "**Preview:** $STABLE_URL"
            if [[ "$ALIAS_OK" == "true" ]]; then
              echo "**This commit:** $DEPLOY_URL"
            else
              echo "_Stable alias update failed — URL reflects this commit only._"
            fi
          } >> "$GITHUB_STEP_SUMMARY"

      - name: Upload preview metadata
        uses: actions/upload-artifact@v6
        with:
          name: vercel-preview
          path: temp/vercel-preview

  deploy-production:
    if: github.event_name == 'push'
    runs-on: ubuntu-latest
    steps:
      - name: Checkout repository
        uses: actions/checkout@v6

      - name: Install pnpm
        uses: pnpm/action-setup@fc06bc1257f339d1d5d8b3a19a8cae5388b55320 # v4.4.0

      - name: Setup Node
        uses: actions/setup-node@v6
        with:
          node-version-file: '.nvmrc'

      - name: Install Vercel CLI
        run: npm install --global vercel@latest

      - name: Pull Vercel environment information
        run: vercel pull --yes --environment=production

      - name: Build project artifacts
        run: vercel build --prod

      - name: Deploy project artifacts to Vercel
        id: deploy
        run: |
          URL=$(vercel deploy --prebuilt --prod)
          echo "url=$URL" >> "$GITHUB_OUTPUT"

      - name: Add deployment URL to summary
        run: echo "**Production:** ${{ steps.deploy.outputs.url }}" >> "$GITHUB_STEP_SUMMARY"