ci.yml

name: CI
on:
  push:
    branches:
      # Change this if your primary branch is not main
      - main
      - dev
  pull_request:

# Needed for nx-set-shas when run on the main branch
permissions:
  actions: read
  contents: read

env:
  NX_CLOUD_DISTRIBUTED_EXECUTION: true
  NX_CLOUD_DISTRIBUTED_EXECUTION_AGENT_COUNT: 3 # expected number of agents
  NX_BRANCH: ${{ github.event.number || github.ref_name }}
  NX_CLOUD_ACCESS_TOKEN: ${{ secrets.NX_CLOUD_ACCESS_TOKEN }}

jobs:
  main:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
        name: Checkout [Pull Request]
        if: ${{ github.event_name == 'pull_request' }}
        with:
          # By default, PRs will be checked-out based on the Merge Commit, but we want the actual branch HEAD.
          ref: ${{ github.event.pull_request.head.sha }}
          # We need to fetch all branches and commits so that Nx affected has a base to compare against.
          fetch-depth: 0

      - uses: actions/checkout@v4
        name: Checkout [Default Branch]
        if: ${{ github.event_name != 'pull_request' }}
        with:
          # We need to fetch all branches and commits so that Nx affected has a base to compare against.
          fetch-depth: 0
      - uses: actions/setup-node@v3
        with:
          node-version: 20

      - uses: pnpm/action-setup@v3
        name: Install pnpm
        with:
          version: 8
          run_install: false

      - name: Get pnpm store directory
        shell: bash
        run: |
          echo "STORE_PATH=$(pnpm store path --silent)" >> $GITHUB_ENV

      - uses: actions/cache@v3
        name: Setup pnpm cache
        with:
          path: ${{ env.STORE_PATH }}
          key: ${{ runner.os }}-pnpm-store-${{ hashFiles('**/pnpm-lock.yaml') }}
          restore-keys: |
            ${{ runner.os }}-pnpm-store-

      # The "--stop-agents-after" is optional, but allows idle agents to shut down once the "e2e-ci" targets have been requested
      # - run: npx nx-cloud start-ci-run --distribute-on="5 linux-medium-js" --stop-agents-after="e2e-ci"

      - run: pnpm i --frozen-lockfile

      - uses: nrwl/nx-set-shas@v3
        with:
          main-branch-name: "dev"

      # This line is needed for nx affected to work when CI is running on a PR
      - name: Checkout default branch
        if: github.ref != 'refs/heads/dev'
        run: git branch --track dev origin/dev

      - name: Initialize the Nx Cloud distributed CI run and stop agents when the build tasks are done
        run: npx nx-cloud start-ci-run --stop-agents-after=build

      - name: Run commands in parallel
        run: |
          pids=()
          # list of commands to be run on main has env flag NX_CLOUD_DISTRIBUTED_EXECUTION set to false
          NX_CLOUD_DISTRIBUTED_EXECUTION=false npx nx-cloud record -- npx nx format:check & pids+=($!)

          # list of commands to be run on agents
          npx nx affected -t lint,test --parallel=3 &
          npx nx affected -t build --parallel=3 & 
          pids+=($!)

          # run all commands in parallel and bail if one of them fails
          for pid in ${pids[*]}; do
            if ! wait $pid; then
              exit 1
            fi
          done

          exit 0

      - name: Stop CI run
        run: npx nx-cloud complete-ci-run

  agents:
    name: Agent ${{ matrix.agent }}
    runs-on: ubuntu-latest
    strategy:
      matrix:
        agent: [1, 2, 3]
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - uses: actions/setup-node@v3
        with:
          node-version: 20

      - uses: pnpm/action-setup@v3
        name: Install pnpm
        with:
          version: 8
          run_install: false

      - name: Get pnpm store directory
        shell: bash
        run: |
          echo "STORE_PATH=$(pnpm store path --silent)" >> $GITHUB_ENV

      - uses: actions/cache@v3
        name: Setup pnpm cache
        with:
          path: ${{ env.STORE_PATH }}
          key: ${{ runner.os }}-pnpm-store-${{ hashFiles('**/pnpm-lock.yaml') }}
          restore-keys: |
            ${{ runner.os }}-pnpm-store-

      - name: Install Dependencies
        run: pnpm i --frozen-lockfile

      - name: Start Nx Agent ${{ matrix.agent }}
        run: npx nx-cloud start-agent
        env:
          NX_AGENT_NAME: ${{ matrix.agent }}