name: ocelot.social end-to-end test CI

on:
  push:
    paths:
      - 'webapp/**'
      - 'backend/**'
      - 'neo4j/**'
      - 'cypress/**'
      - '.github/workflows/test-e2e.yml'

jobs:
  build_images:
    name: Build Docker Images
    runs-on: ubuntu-latest
    strategy:
      matrix:
        include:
          - service: backend
            dockerfile: backend/Dockerfile
            context: backend
            target: build
          - service: webapp
            dockerfile: webapp/Dockerfile
            context: webapp
            target: build
          - service: neo4j
            dockerfile: neo4j/Dockerfile
            context: neo4j
            target: community
    steps:
      - uses: actions/checkout@v4
      - uses: docker/setup-buildx-action@v3
      - name: Build ${{ matrix.service }} image
        uses: docker/build-push-action@v5
        with:
          context: ./${{ matrix.context }}
          file: ./${{ matrix.dockerfile }}
          target: ${{ matrix.target }}
          tags: ocelotsocialnetwork/${{ matrix.service }}:test
          push: false
          outputs: type=docker,dest=/tmp/${{ matrix.service }}.tar
      - name: Upload Docker image tarball
        uses: actions/upload-artifact@v4
        with:
          name: ${{ matrix.service }}-image
          path: /tmp/${{ matrix.service }}.tar

  prepare_backend:
    name: Prepare backend
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: actions/setup-node@v4
        with:
          node-version: '20'
      - name: Generate backend cache key
        id: backend-key
        run: echo "key=node-modules-${{ runner.os }}-${{ hashFiles('backend/yarn.lock') }}" >> $GITHUB_OUTPUT
      - name: Cache backend node_modules
        uses: actions/cache@v4
        with:
          path: backend/node_modules
          key: ${{ steps.backend-key.outputs.key }}
          restore-keys: |
            node-modules-${{ runner.os }}-
            node-modules-
      - name: Setup .env and backend deps
        run: |
          cp backend/.env.test_e2e backend/.env || touch backend/.env
          cd backend
          if [ ! -d "node_modules" ]; then yarn install; fi
          yarn build
      - name: Upload backend build
        uses: actions/upload-artifact@v4
        with:
          name: backend-build
          path: backend/build

  prepare_webapp:
    name: Prepare webapp
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: actions/setup-node@v4
        with:
          node-version: '20'
      - name: Generate webapp cache key
        id: webapp-key
        run: echo "key=node-modules-${{ runner.os }}-${{ hashFiles('webapp/yarn.lock') }}" >> $GITHUB_OUTPUT
      - name: Cache webapp node_modules
        uses: actions/cache@v4
        with:
          path: webapp/node_modules
          key: ${{ steps.webapp-key.outputs.key }}
          restore-keys: |
            node-modules-${{ runner.os }}-
            node-modules-
      - name: Setup .env and webapp deps
        run: |
          cp webapp/.env.template webapp/.env || touch webapp/.env
          if [ ! -d "webapp/node_modules" ]; then (cd webapp && yarn install || true); fi

  prepare_cypress:
    name: Prepare Cypress
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - name: Generate cypress cache key
        id: cypress-key
        run: echo "key=cypress-${{ runner.os }}-${{ hashFiles('**/yarn.lock') }}" >> $GITHUB_OUTPUT
      - name: Cache cypress and dependencies
        uses: actions/cache@v4
        with:
          path: |
            /opt/cucumber-json-formatter
            ~/.cache/Cypress
            node_modules
            backend/node_modules
          key: ${{ steps.cypress-key.outputs.key }}
          restore-keys: |
            cypress-${{ runner.os }}-
            cypress-
      - name: Copy env files
        run: |
          cp webapp/.env.template webapp/.env
          cp backend/.env.test_e2e backend/.env
      - name: Install cypress requirements
        run: |
          wget --no-verbose -O /opt/cucumber-json-formatter "https://github.com/cucumber/json-formatter/releases/download/v19.0.0/cucumber-json-formatter-linux-386"
          chmod +x /opt/cucumber-json-formatter
          cd backend && yarn install && yarn build && cd ..
          yarn install

  fullstack_tests:
    name: Run Fullstack E2E Tests
    needs: [build_images, prepare_backend, prepare_webapp, prepare_cypress]
    runs-on: ubuntu-latest
    env:
      jobs: 8
    strategy:
      matrix:
        job: [1, 2, 3, 4, 5, 6, 7, 8]
    steps:
      - name: Restore node_modules cache
        uses: actions/cache@v4
        with:
          path: |
            backend/node_modules
            webapp/node_modules
          key: node-modules-${{ runner.os }}-${{ hashFiles('**/yarn.lock') }}
          restore-keys: |
            node-modules-${{ runner.os }}-
            node-modules-
      - name: Download Docker image tarballs
        uses: actions/download-artifact@v4
        with:
          name: backend-image
          path: /tmp
      - uses: actions/download-artifact@v4
        with:
          name: webapp-image
          path: /tmp
      - uses: actions/download-artifact@v4
        with:
          name: neo4j-image
          path: /tmp
      - name: Load Docker images
        run: |
          docker load < /tmp/neo4j.tar
          docker load < /tmp/backend.tar
          docker load < /tmp/webapp.tar
      - name: Download backend build
        uses: actions/download-artifact@v4
        with:
          name: backend-build
          path: backend/build
      - uses: actions/checkout@v4
      - name: Add node_modules/.bin to PATH
        run: echo "$(pwd)/node_modules/.bin" >> $GITHUB_PATH
      - name: Ensure Cypress CLI is available
        run: |
          if ! command -v cypress >/dev/null; then
            echo "⚠️ Cypress CLI missing — installing now..."
            yarn install
          else
            echo "✅ Cypress CLI is present"
          fi
      - name: Setup .env files
        run: |
          mkdir -p webapp backend
          cp webapp/.env.template webapp/.env || touch webapp/.env
          cp backend/.env.test_e2e backend/.env || touch backend/.env
      - name: Start system
        run: |
          set -e
          docker compose -f docker-compose.yml -f docker-compose.test.yml up --detach webapp mailserver
      - name: Wait for webapp
        run: |
          for i in {1..30}; do curl -sf http://localhost:3000 && exit 0 || sleep 2; done; exit 1
      - name: Run Cypress tests
        run: |
          yarn run cypress:run --spec $(cypress/parallel-features.sh ${{ matrix.job }} ${{ env.jobs }})