CI_PIPELINE.yml

name: CI Pipeline

on:
  pull_request:
    types: [ opened, reopened, synchronize ]
    branches:
      - develop
      - main

jobs:
  build:
    name: Lint, Build and Test
    runs-on: ubuntu-latest

    strategy:
      matrix:
        project: [ frontend, backend ]

    steps:
      - name: Checkout Repository
        uses: actions/checkout@v3
        with:
          fetch-depth: 2

      - name: Fetch base branch
        run: |
          echo "BASE_BRANCH=${{ github.event.pull_request.base.ref }}" >> $GITHUB_ENV
          git fetch origin $BASE_BRANCH --depth=1

      - name: Check for changes in ${{ matrix.project }}
        id: changes
        run: |
          if git diff --name-only origin/$BASE_BRANCH HEAD | grep -q "^${{ matrix.project }}/"; then
            echo "changed=true" >> $GITHUB_ENV
          else
            echo "changed=false" >> $GITHUB_ENV
          fi

      - name: Set up Node.js
        if: env.changed == 'true'
        uses: actions/setup-node@v3
        with:
          node-version: '20'

      - name: Install Dependencies for ${{ matrix.project }}
        if: env.changed == 'true'
        run: yarn install --frozen-lockfile # yarn.lock 을 기준으로 설치하며, 의존성 재해석 방지
        working-directory: ${{ matrix.project }}

      - name: Lint ${{ matrix.project }}
        if: env.changed == 'true'
        run: yarn format-check
        working-directory: ${{ matrix.project }}

      - name: Build ${{ matrix.project }}
        if: env.changed == 'true'
        run: yarn build
        working-directory: ${{ matrix.project }}

      - name: Test ${{ matrix.project }}
        if: env.changed == 'true'
        run: |
          echo "${{ secrets.DOT_ENV_PROD }}" > ${{ github.workspace }}/backend/.env
          yarn test
        working-directory: ${{ matrix.project }}