name: CI

on:
  push:
    branches: [ main ]
  pull_request:
    branches: [ main ]

env:
  # WHY?: services are executed way before the env can be sourced from .env file
  DB_NAME: piku_test_db
  DB_USER: test
  DB_PASSWORD: password123
  DB_HOST: postgres
  DB_PORT: 5432

jobs:
  setup-environment:
    name: Generate Certificates
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - name: Generate SSL Certificates
        run: |
          sudo apt-get update && sudo apt-get install -y mkcert libnss3-tools
          mkdir -p certs
          mkcert -install
          mkcert -cert-file certs/localhost.pem -key-file certs/localhost-key.pem localhost 127.0.0.1 ::1

      - name: Cache certificates
        uses: actions/cache/save@v4
        with:
          path: certs
          key: certs-${{ runner.os }}-${{ github.sha }}

  frontend:
    name: Frontend CI
    runs-on: ubuntu-latest
    needs: setup-environment
    defaults:
      run:
        working-directory: ./frontend
    steps:
      - uses: actions/checkout@v4
      - uses: oven-sh/setup-bun@v2

      - name: Restore certificates
        uses: actions/cache/restore@v4
        with:
          path: certs
          key: certs-${{ runner.os }}-${{ github.sha }}

      - name: Install dependencies
        run: bun install --frozen-lockfile

      - name: Code Quality
        run: |
          cp ../.env.example ../.env
          bun run check

      - name: Type Check & Build
        run: bun run build

      - name: Unit Tests
        run: bun run test

  backend:
    name: Backend CI
    runs-on: ubuntu-latest
    needs: setup-environment
    services:
      postgres:
        image: postgres:16-alpine
        env:
          POSTGRES_DB: ${{ env.DB_NAME }}
          POSTGRES_USER: ${{ env.DB_USER }}
          POSTGRES_PASSWORD: ${{ env.DB_PASSWORD }}
        options: --health-cmd pg_isready --health-interval 10s --health-timeout 5s --health-retries 5
    defaults:
      run:
        working-directory: ./backend
    steps:
      - uses: actions/checkout@v4
      - name: Install uv
        uses: astral-sh/setup-uv@v5
        with:
          enable-cache: true
          cache-dependency-glob: "backend/uv.lock"

      - name: Restore certificates
        uses: actions/cache/restore@v4
        with:
          path: certs
          key: certs-${{ runner.os }}-${{ github.sha }}

      - name: Setup DB connection Variables
        run: |
          cp ../.env.example ../.env
          uv sync

      - name: Lint & Test
        run: |
          uv run ruff check
          uv run python manage.py test

  e2e:
    name: E2E Tests
    runs-on: ubuntu-latest
    needs: setup-environment
    steps:
      - uses: actions/checkout@v4

      - name: Restore Certificates
        uses: actions/cache/restore@v4
        with:
          path: certs
          key: certs-${{ runner.os }}-${{ github.sha }}

      - name: Setup Tools
        uses: astral-sh/setup-uv@v5

      - uses: oven-sh/setup-bun@v2


      - name: Cache Playwright
        id: playwright-cache
        uses: actions/cache@v4
        with:
          path: ~/.cache/ms-playwright
          key: ${{ runner.os }}-playwright-${{ hashFiles('frontend/bun.lock') }}

      - name: Install Dependencies
        run: |
          (cd frontend && bun install)
          if [ "${{ steps.playwright-cache.outputs.cache-hit }}" != "true" ]; then
            (cd frontend && bun x playwright install --with-deps)
          fi

      - name: Run E2E
        run: |
          cp .env.e2e.example .env.e2e
          chmod +x ./scripts/run-e2e.sh
          ./scripts/run-e2e.sh
        env:
          CI: "true"

      - name: Upload Playwright Report
        if: always()
        uses: actions/upload-artifact@v4
        with:
          name: playwright-report
          path: frontend/playwright-report/
          retention-days: 10

      - name: Print Backend Logs on Failure
        if: failure()
        run: cat tmp/logs/backend.log || true