main.yml

name: CI Pipeline Hanoi Towers

on:
  push:
    branches:
      - master
      - staging
      - develop

jobs:
  set-environment:
    runs-on: ubuntu-latest
    outputs:
      env: ${{ steps.set-env.outputs.env }}

    steps:
      - name: Determine environment
        id: set-env
        run: |
          if [[ "${{ github.ref }}" == "refs/heads/master" ]]; then
            echo "env=prod" >> $GITHUB_OUTPUT
          elif [[ "${{ github.ref }}" == "refs/heads/staging" ]]; then
            echo "env=staging" >> $GITHUB_OUTPUT
          elif [[ "${{ github.ref }}" == "refs/heads/develop" ]]; then
            echo "env=develop" >> $GITHUB_OUTPUT
          fi

  build-backend:
    runs-on: ubuntu-latest
    needs: set-environment
    environment: ${{ needs.set-environment.outputs.env }}
    outputs:
      backend_changed: ${{ steps.backend-check.outputs.backend_changed }}

    env:
      JWT_SECRET: ${{ secrets.JWT_SECRET }}
      DB_PASSWORD: ${{ secrets.DB_PASSWORD }}
      ENVIRONMENT: ${{ needs.set-environment.outputs.env }}

    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Check for backend changes
        id: backend-check
        run: |
          if git diff --name-only ${{ github.event.before }} ${{ github.event.after }} | grep -q '^hanoi-backend/'; then
            echo "backend_changed=true" >> $GITHUB_ENV
            echo "backend_changed=true" >> $GITHUB_OUTPUT
          else
            echo "backend_changed=false" >> $GITHUB_ENV
            echo "backend_changed=false" >> $GITHUB_OUTPUT
          fi

      - name: Set up .env file
        if: env.backend_changed == 'true'
        run: |
          sed -i "s|^JWT_SECRET=.*|JWT_SECRET=${JWT_SECRET}|" hanoi-backend/.env
          sed -i "s|^DATABASE_PASSWORD=.*|DATABASE_PASSWORD=${DB_PASSWORD}|" hanoi-backend/.env

      - name: Set up JDK 17
        if: env.backend_changed == 'true'
        uses: actions/setup-java@v4
        with:
          distribution: 'temurin'
          java-version: '17'

      - name: Grant execute permission for Gradle Wrapper
        if: env.backend_changed == 'true'
        run: chmod +x ./gradlew

      - name: Build backend
        if: env.backend_changed == 'true'
        run: |
          ./gradlew :hanoi-backend:build

      - name: Cache backend build artifacts
        if: env.backend_changed == 'true'
        uses: actions/cache@v4
        with:
          path: hanoi-backend/build/libs
          key: backend-${{ env.ENVIRONMENT }}-${{ runner.os }}-${{ hashFiles('hanoi-backend/**') }}
          restore-keys: |
            backend-${{ env.ENVIRONMENT }}-${{ runner.os }}-

      - name: Upload backend artifact
        if: env.backend_changed == 'true'
        uses: actions/upload-artifact@v4
        with:
          name: backend-artifact-${{ env.ENVIRONMENT }}
          path: hanoi-backend/build/libs

  build-frontend:
    runs-on: ubuntu-latest
    needs: set-environment
    environment: ${{ needs.set-environment.outputs.env }}
    outputs:
      frontend_changed: ${{ steps.frontend-check.outputs.frontend_changed }}

    env:
      HANOI_FRONTEND_URL: ${{ vars.HANOI_FRONTEND_URL }}
      HANOI_BACKEND_URL: ${{ vars.HANOI_BACKEND_URL }}
      ENVIRONMENT: ${{ needs.set-environment.outputs.env }}

    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Check for frontend changes
        id: frontend-check
        run: |
          if git diff --name-only ${{ github.event.before }} ${{ github.event.after }} | grep -q '^hanoi-frontend/'; then
            echo "frontend_changed=true" >> $GITHUB_ENV
            echo "frontend_changed=true" >> $GITHUB_OUTPUT
          else
            echo "frontend_changed=false" >> $GITHUB_ENV
            echo "frontend_changed=false" >> $GITHUB_OUTPUT
          fi

      - name: Set up .env file
        if: env.frontend_changed == 'true'
        run: |
          sed -i "s|^HANOI_FRONTEND_URL=.*|HANOI_FRONTEND_URL=${HANOI_FRONTEND_URL}|" hanoi-frontend/.env
          sed -i "s|^HANOI_BACKEND_URL=.*|HANOI_BACKEND_URL=${HANOI_BACKEND_URL}|" hanoi-frontend/.env

      - name: Set up JDK 17
        if: env.frontend_changed == 'true'
        uses: actions/setup-java@v4
        with:
          distribution: 'temurin'
          java-version: '17'

      - name: Grant execute permission for Gradle Wrapper
        if: env.frontend_changed == 'true'
        run: chmod +x ./gradlew

      - name: Build frontend
        if: env.frontend_changed == 'true'
        run: |
          ./gradlew :hanoi-frontend:build

      - name: Cache frontend build artifacts
        if: env.frontend_changed == 'true'
        uses: actions/cache@v4
        with:
          path: hanoi-frontend/build/dist/js/productionExecutable
          key: frontend-${{ env.ENVIRONMENT }}-${{ runner.os }}-${{ hashFiles('hanoi-frontend/**') }}
          restore-keys: |
            frontend-${{ env.ENVIRONMENT }}-${{ runner.os }}-

      - name: Upload frontend artifact
        if: env.frontend_changed == 'true'
        uses: actions/upload-artifact@v4
        with:
          name: frontend-artifact-${{ env.ENVIRONMENT }}
          path: hanoi-frontend/build/dist/js/productionExecutable