ci.yml

name: CI
on:
  pull_request:
  push:
    branches:
      - main

concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

jobs:
  build_details:
    runs-on: ubuntu-latest
    outputs:
      packages: ${{ steps.packages.outputs.packages }}
      should_run: ${{ steps.packages.outputs.should_run }}
    steps:
      - name: Checkout code
        uses: actions/checkout@v4
      - name: Grab packages to build
        id: packages
        run: |
          PACKAGES_TO_RUN=$(OUTPUT_ONLY=true ./tests/run_tests.sh | while read i; do echo "\\\"$i\\\""; done | xargs | sed -e 's# #,#g' | tr -d '\n')
          SHOULD_RUN=$(if [ -n "${PACKAGES_TO_RUN}"]; then echo "false"; else echo "true"; fi)
          echo "Packages to run: ${PACKAGES_TO_RUN}"
          echo "packages=[${PACKAGES_TO_RUN}]" >> "${GITHUB_OUTPUT}"
          echo "should_run=${SHOULD_RUN}" >> "${GITHUB_OUTPUT}"

  build_package:
    runs-on: ubuntu-latest
    needs: build_details
    if: needs.build_details.outputs.should_run == 'true'
    strategy:
      fail-fast: false
      matrix:
        package: ${{ fromJson(needs.build_details.outputs.packages) }}
        # ocaml compiler 4.14.1 does not have an option to build in 32 bit mode anymore.
        arch: [x64]
        ocaml_version: [4.14.1, 5.1.1]
    container:
      image: ocamlcross/windows-${{ matrix.arch }}-base:${{ matrix.ocaml_version }}
      options: --user root
    steps:
      - name: Checkout code
        uses: actions/checkout@v4
      - name: Build package
        env:
          PKG_CONFIG_PATH: ${{ matrix.arch == 'x64' && '/usr/src/mxe/usr/x86_64-w64-mingw32.static/lib/pkgconfig/' || '/usr/src/mxe/usr/i686-w64-mingw32.static/lib/pkgconfig/' }}
          TOOLPREF64: /usr/src/mxe/usr/bin/x86_64-w64-mingw32.static-
          TOOLPREF32: /usr/src/mxe/usr/bin/i686-w64-mingw32.static-
        run: |
          rm -rf /home/opam/opam-cross-windows/packages /home/opam/opam-cross-windows/repo
          mv packages /home/opam/opam-cross-windows
          mv repo /home/opam/opam-cross-windows
          sudo -u opam opam update
          sudo -u opam opam list --short --recursive --external --vars os-distribution=mxe,os-family=mingw --required-by=${{ matrix.package }} > /home/opam/mxe-deps
          if [ -s /home/opam/mxe-deps ]; then
            cd /usr/src/mxe/ && cat /home/opam/mxe-deps | xargs make
          fi
          eval $(sudo -u opam opam env)
          sudo -u opam opam reinstall --verbose -y ${{ matrix.package }} ocaml-windows.${{ matrix.ocaml_version }}
      - name: Export revdeps
        id: revdeps
        if: matrix.arch == 'x64'
        run: |
          eval $(sudo -u opam opam env)
          BASE_PACKAGE=$(echo ${{ matrix.package }} | cut -d'.' -f 1)
          REVDEPS_TO_BUILD=$(sudo -u opam opam list --rec --short --sort --depends-on=${{ matrix.package }} | grep -v "${BASE_PACKAGE}" |  while read i; do echo "\\\"$i\\\""; done | xargs | sed -e 's# #,#g' | tr -d '\n')
          echo "Revdeps to build: ${REVDEPS_TO_BUILD}"
          echo "revdeps=[${REVDEPS_TO_BUILD}]" >> "${GITHUB_OUTPUT}"
      - name: Write matrix output
        if: matrix.arch == 'x64' && matrix.ocaml_version == '5.1.1'
        id: matrix_output
        uses: cloudposse/github-action-matrix-outputs-write@main
        with:
          matrix-step-name: ${{ github.job }}
          matrix-key: ${{ matrix.package }}
          outputs: |-
            revdeps: ${{ steps.revdeps.outputs.revdeps }}

  collect_revdeps:
    runs-on: ubuntu-latest
    needs: [build_package]
    outputs:
      revdeps: ${{ steps.revdeps.outputs.revdeps }}
      has_revdeps: ${{ steps.revdeps.outputs.has_revdeps }}
    steps:
      - name: Collect revdeps
        uses: cloudposse/github-action-matrix-outputs-read@main
        id: collect_revdeps
        with:
          matrix-step-name: build_package
      - name: Export all revdeps
        uses: satackey/action-js-inline@v0.0.2
        id: revdeps
        with:
          script: |
            const core = require("@actions/core")
            const { revdeps } = JSON.parse('${{ steps.collect_revdeps.outputs.result }}')
            const result = Object.keys(revdeps).reduce((result, key) =>
              [...result, ...revdeps[key]], []);
            console.log(`Collected revdeps: ${result}`);
            core.setOutput("revdeps", JSON.stringify(result));
            core.setOutput("has_revdeps", result.length !== 0);

  build_revdeps:
    runs-on: ubuntu-latest
    needs: collect_revdeps
    if: needs.collect_revdeps.outputs.has_revdeps == 'true'
    strategy:
      fail-fast: false
      matrix:
        package: ${{ fromJson(needs.collect_revdeps.outputs.revdeps) }}
        arch: [x64]
        ocaml_version: [4.14.1, 5.1.1]
    container:
      image: ocamlcross/windows-${{ matrix.arch }}-base:${{ matrix.ocaml_version }}
      options: --user root
    steps:
      - name: Checkout code
        uses: actions/checkout@v4
      - name: Build revdep
        env:
          PKG_CONFIG_PATH: ${{ matrix.arch == 'x64' && '/usr/src/mxe/usr/x86_64-w64-mingw32.static/lib/pkgconfig/' || '/usr/src/mxe/usr/i686-w64-mingw32.static/lib/pkgconfig/' }}
          TOOLPREF64: /usr/src/mxe/usr/bin/x86_64-w64-mingw32.static-
          TOOLPREF32: /usr/src/mxe/usr/bin/i686-w64-mingw32.static-
        run: |
          rm -rf /home/opam/opam-cross-windows/packages /home/opam/opam-cross-windows/repo
          mv packages /home/opam/opam-cross-windows
          mv repo /home/opam/opam-cross-windows
          sudo -u opam opam update
          sudo -u opam opam list --short --recursive --external --vars os-distribution=mxe,os-family=mingw --required-by=${{ matrix.package }} > /home/opam/mxe-deps
          if [ -s /home/opam/mxe-deps ]; then
            cd /usr/src/mxe/ && cat /home/opam/mxe-deps | xargs make
          fi
          eval $(sudo -u opam opam env)
          sudo -u opam opam reinstall --verbose -y ${{ matrix.package }} ocaml-windows.${{ matrix.ocaml_version }}