ci.yml

name: CI

on:
  push:
    branches: [main]
  pull_request:
    types: [opened, edited, synchronize, reopened]

jobs:
  build-backend:
    name: Build Backend
    runs-on: ubuntu-latest

    strategy:
      matrix:
        target: [client, admin]

    steps:
      - uses: actions/checkout@v4

      - name: Check if source code has changed
        uses: dorny/paths-filter@v3
        id: filter
        with:
          filters: |
            shared: &shared
              - 'apps/backend/libs/**'
              - 'apps/backend/prisma/**'
              - 'apps/backend/*.json'
              - 'pnpm-lock.yaml'
            client:
              - *shared
              - 'apps/backend/apps/client/**'
            admin:
              - *shared
              - 'apps/backend/apps/admin/**'

      - uses: ./.github/actions/setup-pnpm
        if: ${{ steps.filter.outputs[matrix.target] == 'true' }}

      - name: Generate Prisma Client
        if: ${{ steps.filter.outputs[matrix.target] == 'true' }}
        run: pnpm --filter="@codedang/backend" exec prisma generate

      - name: Build
        if: ${{ steps.filter.outputs[matrix.target] == 'true' }}
        run: pnpm --filter="@codedang/backend" build ${{ matrix.target }}

  build-frontend:
    name: Build Frontend
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v4

      - name: Check if source code has changed
        uses: dorny/paths-filter@v3
        id: filter
        with:
          filters: |
            frontend:
              - 'apps/frontend/**'
              - 'pnpm-lock.yaml'

      - uses: ./.github/actions/setup-pnpm
        if: steps.filter.outputs.frontend == 'true'

      - name: Setup Next.js build cache
        uses: actions/cache@v4
        if: steps.filter.outputs.frontend == 'true'
        with:
          path: apps/frontend/.next/cache
          key: ${{ runner.os }}-nextjs-${{ hashFiles('pnpm-lock.yaml') }}-${{ hashFiles('**/*.js', '**/*.jsx', '**/*.ts', '**/*.tsx') }}
          restore-keys: |
            ${{ runner.os }}-nextjs-${{ hashFiles('pnpm-lock.yaml') }}-

      - name: Load Next.js environment
        if: steps.filter.outputs.frontend == 'true'
        run: |
          echo "NEXT_PUBLIC_BASEURL=https://stage.codedang.com/api" >> apps/frontend/.env
          echo "NEXT_PUBLIC_GQL_BASEURL=https://stage.codedang.com/graphql" >> apps/frontend/.env
          echo "NEXT_URL=https://stage.codedang.com" >> apps/frontend/.env

      - name: Build
        if: steps.filter.outputs.frontend == 'true'
        run: pnpm --filter="@codedang/frontend" build

  typecheck:
    name: Typecheck
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v4

      - name: Check if source code has changed
        uses: dorny/paths-filter@v3
        id: filter
        with:
          filters: |
            backend:
              - 'apps/backend/**'

      - uses: ./.github/actions/setup-pnpm
        if: steps.filter.outputs.backend == 'true'

      - name: Generate Prisma Client
        if: steps.filter.outputs.backend == 'true'
        run: pnpm --filter="@codedang/backend" exec prisma generate

      - name: Check types (backend) # For spec files
        if: steps.filter.outputs.backend == 'true'
        run: pnpm --filter="@codedang/backend" exec tsc --noEmit

      # Typecheck is not performed for frontend intentionally.
      # Check: https://github.com/vercel/next.js/issues/53959
      # Unlike backend, we don't have spec file to check types.
      # So typechecking performed in the build step is enough.

  lint:
    name: Lint
    runs-on: ubuntu-latest

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

      - uses: ./.github/actions/setup-pnpm
        with:
          install: 'no'

      - name: Install dev dependencies
        run: pnpm install --dev

      - name: Set up Go
        uses: actions/setup-go@v5
        with:
          go-version-file: apps/iris/go.mod
          cache-dependency-path: apps/iris/go.sum

      - name: Lint pull request title
        if: ${{ github.event_name == 'pull_request' }}
        run: echo "${{ github.event.pull_request.title }}" | pnpm commitlint --verbose

      - name: Check style (Node.js)
        run: git diff --name-only --diff-filter=ACMRUXB origin/main | xargs -r pnpm prettier -c --ignore-unknown --no-error-on-unmatched-pattern

      - name: Check Style (Go)
        run: |
          if [ -n "$(gofmt -l .)" ]; then
            echo "Go files must be formatted with gofmt. Please run:"
            echo "  go fmt ./..."
            exit 1
          fi
        working-directory: ./apps/iris

      - name: Lint (Node.js)
        run: git diff --name-only --diff-filter=ACMRUXB origin/main | grep -E "(.ts$|.tsx$|.js$|.jsx$)" | grep -v 'next.config.js$' | xargs -r pnpm eslint

  test-backend:
    name: Test Backend
    runs-on: ubuntu-latest

    env:
      DATABASE_URL: postgresql://postgres:1234@localhost:5432/skkuding?schema=public
      TEST_DATABASE_URL: postgresql://postgres:1234@localhost:5432/skkuding?schema=public

    services:
      postgres:
        image: postgres:16-alpine
        ports:
          - 5432:5432
        env:
          POSTGRES_USER: postgres
          POSTGRES_PASSWORD: 1234
          POSTGRES_DB: skkuding

    steps:
      - uses: actions/checkout@v4

      - name: Check if source code has changed
        uses: dorny/paths-filter@v3
        id: filter
        with:
          filters: |
            backend:
              - 'apps/backend/**'
              - 'pnpm-lock.yaml'

      - uses: ./.github/actions/setup-pnpm
        if: steps.filter.outputs.backend == 'true'

      - name: Check Prisma Migration
        if: steps.filter.outputs.backend == 'true'
        run: |
          pnpm --filter="@codedang/backend" exec prisma migrate diff \
            --from-migrations ./prisma/migrations \
            --to-schema-datamodel ./prisma/schema.prisma \
            --shadow-database-url ${{ env.DATABASE_URL }} \
            --exit-code ||
          (echo "::error::Prisma migration is not up to date." \
          "Please run 'pnpm prisma migrate dev' locally and commit the changes." && exit 1)

      - name: Migrate Prisma
        if: steps.filter.outputs.backend == 'true'
        run: pnpm --filter="@codedang/backend" exec prisma migrate reset --force

      - name: Test
        if: steps.filter.outputs.backend == 'true'
        run: pnpm --filter="@codedang/backend" test