firebase-preview.yml

name: Firebase Preview Deploy

# Trigger the workflow on PRs to the main branch only
on:
  pull_request:
    branches:
      - main

jobs:
  deploy-preview:
    runs-on: ubuntu-latest
    permissions:
      contents: read
      pull-requests: write
      issues: write
    steps:
      - name: Checkout code
        uses: actions/checkout@v4

      - name: Setup Node
        uses: actions/setup-node@v4
        with:
          node-version: 'lts/*'

      - name: Install dependencies
        run: npm install

      - name: Build the app
        run: npm run build

      - name: Install Firebase CLI
        run: npm install -g firebase-tools

      - name: Deploy to Firebase Preview Channel
        env:
          FIREBASE_TOKEN: ${{ secrets.FIREBASE_TOKEN }}
        run: firebase hosting:channel:deploy pr-${{ github.event.number }} --expires 3d

      # Step to post the preview link to the PR discussion
      - name: Post preview link to PR
        uses: actions/github-script@v7
        with:
          script: |
            const previewUrl = `https://pr-${{ github.event.number }}--studybuddy-8086e.web.app`;
            github.rest.issues.createComment({
              issue_number: context.issue.number,
              owner: context.repo.owner,
              repo: context.repo.repo,
              body: `🚀 Preview for this PR is available at: ${previewUrl}`
            });