name: Backend CI

on:
  push:
    branches:
      - main
      - master
    paths:
      - 'backend/**'
      - '.github/workflows/backend-ci.yml'
  pull_request:
    branches:
      - main
      - master
    paths:
      - 'backend/**'
      - '.github/workflows/backend-ci.yml'

jobs:
  lint-and-test:
    name: Lint & Verify Backend
    runs-on: ubuntu-latest

    defaults:
      run:
        working-directory: backend

    steps:
      - name: Checkout Code
        uses: actions/checkout@v4

      - name: Setup Python
        uses: actions/setup-python@v5
        with:
          python-version: '3.11'
          cache: 'pip'
          cache-dependency-path: backend/requirements.txt

      - name: Setup Node.js
        uses: actions/setup-node@v4
        with:
          node-version: '20'

      - name: Install System Dependencies
        run: |
          sudo apt-get update
          sudo apt-get install -y --no-install-recommends build-essential libpq-dev

      - name: Install Python Dependencies
        run: |
          python -m pip install --upgrade pip
          pip install -r requirements.txt
          pip install ruff

      - name: Generate Prisma Client
        run: |
          python -m prisma generate

      - name: Run Ruff Linter
        run: |
          ruff check app/ main.py

  docker-build:
    name: Verify Docker Build
    runs-on: ubuntu-latest
    needs: lint-and-test

    steps:
      - name: Checkout Code
        uses: actions/checkout@v4

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3

      - name: Build Docker Image
        uses: docker/build-push-action@v5
        with:
          context: backend
          file: backend/Dockerfile
          push: false
          cache-from: type=gha
          cache-to: type=gha,mode=max