name: PR Test (Arm64)

on:
  push:
    branches: [ main ]
  pull_request:
    branches: [ main ]
  workflow_dispatch:
  workflow_call:
    inputs:
      ref:
        description: 'Git ref (branch, tag, or SHA) to test. If not provided, uses the default branch.'
        required: false
        type: string
        default: ''
      run_all_tests:
        description: "Run all tests (for releasing or testing purpose)"
        required: false
        type: boolean
        default: false

concurrency:
  group: pr-test-arm64-${{ inputs.ref || github.ref }}
  cancel-in-progress: false

jobs:
  check-changes:
    runs-on: ubuntu-latest
    outputs:
      main_package: ${{ steps.filter.outputs.main_package || steps.run-mode.outputs.run_all_tests}}
    steps:
      - name: Checkout code
        uses: actions/checkout@v4
        with:
          ref: ${{ inputs.ref || github.ref }}

      - name: Determine run mode
        id: run-mode
        run: |
          if [[ "${{ inputs.run_all_tests }}" == "true" ]]; then
            echo "run_all_tests=true" >> $GITHUB_OUTPUT
            echo "Run mode: ALL TESTS (run_all_tests=${{ inputs.run_all_tests }})"
          else
            echo "run_all_tests=false" >> $GITHUB_OUTPUT
            echo "Run mode: FILTERED (triggered by ${{ github.event_name }})"
          fi

      - name: Detect file changes
        id: filter
        uses: dorny/paths-filter@v3
        if: steps.run-mode.outputs.run_all_tests != 'true'
        with:
          filters: |
            main_package:
              - "python/sglang/!(multimodal_gen)/**/!(*.md)"
              - "python/pyproject_cpu.toml"
              - "test/**/!(*.md)"
              - "sgl-kernel/**/*.!(md|txt)"
              - ".github/workflows/pr-test-arm64.yml"
              - "docker/arm64.Dockerfile"

  pr-gate:
    needs: check-changes
    if: needs.check-changes.outputs.main_package == 'true'
    uses: ./.github/workflows/pr-gate.yml
    secrets: inherit

  build-test:
    needs: [check-changes, pr-gate]
    if: needs.check-changes.outputs.main_package == 'true'
    runs-on: ubuntu-24.04-arm
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
        with:
          ref: ${{ inputs.ref || github.ref }}

      - name: Build container
        run: |
          PR_REPO=${{ github.event.pull_request.head.repo.clone_url }}
          PR_HEAD_REF=${{ github.head_ref }}

          docker build \
            ${PR_REPO:+--build-arg SGLANG_REPO=$PR_REPO} \
            ${PR_HEAD_REF:+--build-arg VER_SGLANG=$PR_HEAD_REF} \
            . -f docker/arm64.Dockerfile -t sglang_arm64 --no-cache

      - name: Run container
        run: |
          docker run -dt \
            -v ${{ github.workspace }}:/sglang-checkout/ --ipc=host \
            --name ci_sglang_arm64 \
            sglang_arm64

      - name: Arm sanity check
        timeout-minutes: 5
        run: |
          docker exec -w /sglang-checkout/ ci_sglang_arm64 \
            bash -c "source /opt/.venv/bin/activate && python3 -c 'import platform; import torch; import sgl_kernel; from sglang.srt.utils.common import is_host_cpu_arm64; assert platform.machine() in (\"aarch64\", \"arm64\"); assert is_host_cpu_arm64(); assert hasattr(torch.ops.sgl_kernel, \"decode_attention_cpu\"); assert hasattr(torch.ops.sgl_kernel, \"initialize\");'"

      - name: Run unit tests
        timeout-minutes: 36
        run: |
          docker exec -w /sglang-checkout/ ci_sglang_arm64 \
            bash -c "source /opt/.venv/bin/activate && cd ./test && python3 run_suite.py --hw cpu --suite base-b-test-cpu-arm64 --timeout-per-file 1500"

      - name: Change permission
        timeout-minutes: 2
        run: |
          docker exec -u root ci_sglang_arm64 bash -c "
            rm -rf /tmp/ci-home  &&
            chown -R  $(id -u):$(id -g) /sglang-checkout/ 2>/dev/null || true
          "

      - name: Cleanup container
        if: always()
        run: |
          docker rm -f ci_sglang_arm64 || true