name: Release

on:
  workflow_dispatch:
    inputs:
      ref:
        description: 'Ref to build (for Pull Requests, use refs/pull/NNN/head)'
        required: true
  repository_dispatch:
    # client_payload should be the same as the inputs for workflow_dispatch.
    types:
    - Build*
  release:
    types:
    - published

jobs:
  source:
    name: Source

    runs-on: ubuntu-20.04

    outputs:
      version: ${{ steps.metadata.outputs.version }}
      is_tag: ${{ steps.metadata.outputs.is_tag }}
      trigger_type: ${{ steps.metadata.outputs.trigger_type }}
      folder: ${{ steps.metadata.outputs.folder }}

    steps:
    - name: Checkout (Release)
      if: github.event_name == 'release'
      uses: actions/checkout@v2
      with:
        # We generate a changelog; for this we need the full git log.
        fetch-depth: 0

    - name: Checkout (Manual)
      if: github.event_name == 'workflow_dispatch'
      uses: actions/checkout@v2
      with:
        ref: ${{ github.event.inputs.ref }}
        # We generate a changelog; for this we need the full git log.
        fetch-depth: 0

    - name: Checkout (Trigger)
      if: github.event_name == 'repository_dispatch'
      uses: actions/checkout@v2
      with:
        ref: ${{ github.event.client_payload.ref }}
        # We generate a changelog; for this we need the full git log.
        fetch-depth: 0

    - name: Check valid branch name
      run: |
        if [ "${{ github.event_name }}" = "workflow_dispatch" ]; then
          REF="${{ github.event.inputs.ref }}"
        elif [ "${{ github.event_name }}" = "repository_dispatch" ]; then
          REF="${{ github.event.client_payload.ref }}"
        else
          REF="${{ github.ref }}"
        fi

        # Check if we are a tag.
        if [ -n "$(git name-rev --name-only --tags --no-undefined HEAD 2>/dev/null || false)" ]; then
          exit 0
        fi

        # Check if the checkout caused the branch to be named.
        if [ "$(git rev-parse --abbrev-ref HEAD)" != "HEAD" ]; then
          exit 0
        fi

        # Check if this was a pull request.
        if [ -n "$(echo ${REF} | grep '^refs/pull/[0-9]*')" ]; then
          PULL=$(echo ${REF} | cut -d/ -f3)
          git checkout -b pr${PULL}
        fi

        # Are we still in a detached state? Error out.
        if [ "$(git rev-parse --abbrev-ref HEAD)" == "HEAD" ]; then
          echo "The 'ref' given resulted in a checkout of a detached HEAD."
          echo "We cannot detect the version for these checkout accurate."
          echo ""
          echo "If you want to build a Pull Request, make sure you use 'refs/pull/NNN/head'."
          echo ""
          echo "Cancelling build, as without a version we cannot store the artifacts."
          exit 1
        fi

    - name: Generate metadata
      id: metadata
      run: |
        echo "::group::Prepare metadata files"
        cmake -DGENERATE_OTTDREV=1 -P cmake/scripts/FindVersion.cmake
        ./.github/changelog.sh > .changelog
        TZ='UTC' date +"%Y-%m-%d %H:%M UTC" > .release_date
        cat .ottdrev | cut -f 1 -d$'\t' > .version

        if [ $(cat .ottdrev | cut -f 6 -d$'\t') = '1' ]; then
          # Assume that all tags are always releases. Why else make a tag?
          IS_TAG="true"

          FOLDER="${{ env.FOLDER_RELEASES }}"
          TRIGGER_TYPE="new-tag"
        else
          IS_TAG="false"

          BRANCH=$(git symbolic-ref -q HEAD | sed 's@.*/@@')
          if [ -z "${BRANCH}" ]; then
            echo "Internal error: branch name is empty."
            echo "An earlier step should have prevented this from happening."
            echo "Cancelling build, as without a branch name we cannot store the artifacts"
            exit 1
          fi

          if [ "${BRANCH}" = "${{ env.NIGHTLIES_BRANCH }}" ]; then
            # The "master" branch is special, and we call a nightly.
            FOLDER="${{ env.FOLDER_NIGHTLIES }}/$(date +%Y)"
            TRIGGER_TYPE="new-master"
          else
            # All other branches, which can be builds of Pull Requests, are
            # put in their own folder.
            FOLDER="${{ env.FOLDER_BRANCHES }}/${BRANCH}"
            TRIGGER_TYPE="new-branch"
          fi
        fi

        mkdir -p build/bundles
        cp .changelog build/bundles/changelog.txt
        cp .release_date build/bundles/released.txt
        cp README.md build/bundles/README.md
        echo "::endgroup::"

        echo "Release Date: $(cat .release_date)"
        echo "Revision: $(cat .ottdrev)"
        echo "Version: $(cat .version)"
        echo "Is tag: ${IS_TAG}"
        echo "Folder on CDN: ${FOLDER}"
        echo "Workflow trigger: ${TRIGGER_TYPE}"

        echo "::set-output name=version::$(cat .version)"
        echo "::set-output name=is_tag::${IS_TAG}"
        echo "::set-output name=folder::${FOLDER}"
        echo "::set-output name=trigger_type::${TRIGGER_TYPE}"
      env:
        NIGHTLIES_BRANCH: master
        FOLDER_RELEASES: openttd-releases
        FOLDER_NIGHTLIES: openttd-nightlies
        FOLDER_BRANCHES: openttd-branches

    - name: Remove VCS information
      run: |
        rm -rf .git

    - name: Create bundles
      run: |
        FOLDER_NAME=openttd-${{ steps.metadata.outputs.version }}

        # Rename the folder to openttd-NNN
        mkdir ${FOLDER_NAME}
        find . -maxdepth 1 -not -name . -not -name build -not -name ${FOLDER_NAME} -exec mv {} ${FOLDER_NAME}/ \;

        echo "::group::Create tarball (xz) bundle"
        tar --xz -cvf build/bundles/${FOLDER_NAME}-source.tar.xz ${FOLDER_NAME}
        echo "::endgroup::"

        # This tarball is only to be used within this workflow.
        echo "::group::Create tarball (gz) bundle"
        tar --gzip -cvf source.tar.gz ${FOLDER_NAME}
        echo "::endgroup::"

        echo "::group::Create zip bundle"
        zip -9 -r build/bundles/${FOLDER_NAME}-source.zip ${FOLDER_NAME}
        echo "::endgroup::"

    - name: Store bundles
      uses: actions/upload-artifact@v2
      with:
        name: openttd-source
        path: build/bundles/*
        retention-days: 5

    - name: Store source (for other jobs)
      uses: actions/upload-artifact@v2
      with:
        name: internal-source
        path: source.tar.gz
        retention-days: 1

  docs:
    name: Docs
    needs: source

    runs-on: ubuntu-20.04

    steps:
    - name: Download source
      uses: actions/download-artifact@v2
      with:
        name: internal-source

    - name: Unpack source
      run: |
        tar -xf source.tar.gz --strip-components=1

    - name: Install dependencies
      run: |
        echo "::group::Update apt"
        sudo apt-get update
        echo "::endgroup::"

        echo "::group::Install dependencies"
        sudo apt-get install -y --no-install-recommends \
          doxygen \
          # EOF
        echo "::endgroup::"
      env:
        DEBIAN_FRONTEND: noninteractive

    - name: Build
      run: |
        mkdir -p ${GITHUB_WORKSPACE}/build
        cd ${GITHUB_WORKSPACE}/build

        echo "::group::CMake"
        cmake ${GITHUB_WORKSPACE} \
          -DCMAKE_BUILD_TYPE=RelWithDebInfo \
          -DOPTION_DOCS_ONLY=ON \
          # EOF
        echo "::endgroup::"

        echo "::group::Build"
        make docs
        echo "::endgroup::"

    - name: Create bundles
      run: |
        BASENAME=openttd-${{ needs.source.outputs.version }}

        cd ${GITHUB_WORKSPACE}/build

        mv docs/source ${BASENAME}-docs
        mv docs/ai-api ${BASENAME}-docs-ai
        mv docs/gs-api ${BASENAME}-docs-gs

        mkdir -p bundles

        echo "::group::Create docs bundle"
        tar --xz -cf bundles/${BASENAME}-docs.tar.xz ${BASENAME}-docs
        echo "::endgroup::"

        echo "::group::Create AI API docs bundle"
        tar --xz -cf bundles/${BASENAME}-docs-ai.tar.xz ${BASENAME}-docs-ai
        echo "::endgroup::"

        echo "::group::Create GameScript API docs bundle"
        tar --xz -cf bundles/${BASENAME}-docs-gs.tar.xz ${BASENAME}-docs-gs
        echo "::endgroup::"

    - name: Store bundles
      uses: actions/upload-artifact@v2
      with:
        name: openttd-docs
        path: build/bundles/*.tar.xz
        retention-days: 5

  linux:
    name: Linux
    needs: source

    if: needs.source.outputs.is_tag == 'true'

    strategy:
      fail-fast: false
      matrix:
        include:
        - container_image: "ubuntu:18.04"
          bundle_name: "bionic"
        - container_image: "ubuntu:20.04"
          bundle_name: "focal"
        - container_image: "ubuntu:20.10"
          bundle_name: "groovy"
        - container_image: "debian:buster"
          bundle_name: "buster"

    runs-on: ubuntu-20.04
    container:
      image: ${{ matrix.container_image }}

    steps:
    - name: Download source
      uses: actions/download-artifact@v2
      with:
        name: internal-source

    - name: Unpack source
      run: |
        tar -xf source.tar.gz --strip-components=1

    - name: Install dependencies
      run: |
        echo "::group::Update apt"
        apt-get update
        echo "::endgroup::"

        echo "::group::Install dependencies"
        apt-get install -y --no-install-recommends \
          cmake \
          debhelper \
          g++ \
          git \
          make \
          openssl \
          libfontconfig-dev \
          libfluidsynth-dev \
          libicu-dev \
          liblzma-dev \
          liblzo2-dev \
          libsdl2-dev \
          libxdg-basedir-dev \
          lsb-release \
          zlib1g-dev \
          # EOF
        echo "::endgroup::"
      env:
        DEBIAN_FRONTEND: noninteractive

    - name: Install GCC problem matcher
      uses: ammaraskar/gcc-problem-matcher@master

    - name: Build
      run: |
        mkdir -p build
        cd build

        echo "::group::CMake"
        cmake ${GITHUB_WORKSPACE} \
          -DCMAKE_BUILD_TYPE=RelWithDebInfo \
          -DCMAKE_INSTALL_PREFIX=/usr \
          # EOF
        echo "::endgroup::"

        echo "::group::Build"
        echo "Running on $(nproc) cores"
        make -j$(nproc) package
        echo "::endgroup::"

        # Remove the sha256 files CPack generates; we will do this ourself at
        # the end of this workflow.
        rm -f bundles/*.sha256

    - name: Store bundles
      uses: actions/upload-artifact@v2
      with:
        name: openttd-linux-${{ matrix.bundle_name }}
        path: build/bundles
        retention-days: 5

  macos:
    name: MacOS
    needs: source

    strategy:
      fail-fast: false
      matrix:
        include:
        - arch: x64
          full_arch: x86_64

    runs-on: macos-11.0
    env:
      MACOSX_DEPLOYMENT_TARGET: 10.9

    steps:
    - name: Download source
      uses: actions/download-artifact@v2
      with:
        name: internal-source

    - name: Unpack source
      run: |
        tar -xf source.tar.gz --strip-components=1

    - name: Prepare vcpkg (with cache)
      uses: lukka/run-vcpkg@v6
      with:
        vcpkgDirectory: '/usr/local/share/vcpkg'
        doNotUpdateVcpkg: true
        vcpkgArguments: 'freetype liblzma lzo'
        vcpkgTriplet: '${{ matrix.arch }}-osx'

    - name: Build tools
      run: |
        mkdir build-host
        cd build-host

        echo "::group::CMake"
        cmake ${GITHUB_WORKSPACE} \
          -DCMAKE_BUILD_TYPE=RelWithDebInfo \
          -DOPTION_TOOLS_ONLY=ON \
          # EOF
        echo "::endgroup::"

        echo "::group::Build tools"
        echo "Running on $(sysctl -n hw.logicalcpu) cores"
        make -j$(sysctl -n hw.logicalcpu) tools
        echo "::endgroup::"

    - name: Install GCC problem matcher
      uses: ammaraskar/gcc-problem-matcher@master

    - name: Build
      run: |
        mkdir build
        cd build

        echo "::group::CMake"
        cmake ${GITHUB_WORKSPACE} \
          -DCMAKE_OSX_ARCHITECTURES=${{ matrix.full_arch }} \
          -DVCPKG_TARGET_TRIPLET=${{ matrix.arch }}-osx \
          -DCMAKE_TOOLCHAIN_FILE=/usr/local/share/vcpkg/scripts/buildsystems/vcpkg.cmake \
          -DHOST_BINARY_DIR=${GITHUB_WORKSPACE}/build-host \
          -DCMAKE_BUILD_TYPE=RelWithDebInfo \
          # EOF
        echo "::endgroup::"

        echo "::group::Build"
        echo "Running on $(sysctl -n hw.logicalcpu) cores"
        make -j$(sysctl -n hw.logicalcpu) package
        echo "::endgroup::"

        # Remove the sha256 files CPack generates; we will do this ourself at
        # the end of this workflow.
        rm -f bundles/*.sha256

    - name: Store bundles
      uses: actions/upload-artifact@v2
      with:
        name: openttd-macos-${{ matrix.arch }}
        path: build/bundles
        retention-days: 5

  windows:
    name: Windows
    needs: source

    strategy:
      fail-fast: false
      matrix:
        include:
        - arch: x86
        - arch: x64

    runs-on: windows-latest

    steps:
    - name: Download source
      uses: actions/download-artifact@v2
      with:
        name: internal-source

    - name: Unpack source
      shell: bash
      run: |
        tar -xf source.tar.gz --strip-components=1

    - name: Prepare vcpkg (with cache)
      uses: lukka/run-vcpkg@v6
      with:
        vcpkgDirectory: 'c:/vcpkg'
        doNotUpdateVcpkg: true
        vcpkgArguments: 'liblzma libpng lzo zlib'
        vcpkgTriplet: '${{ matrix.arch }}-windows-static'

    - name: Build tools
      uses: lukka/run-cmake@v3
      with:
        cmakeListsOrSettingsJson: CMakeListsTxtAdvanced
        useVcpkgToolchainFile: false
        buildDirectory: '${{ github.workspace }}/build-host'
        buildWithCMakeArgs: '--target tools'
        cmakeBuildType: RelWithDebInfo
        cmakeAppendedArgs: ' -GNinja -DOPTION_TOOLS_ONLY=ON'

    - name: Install MSVC problem matcher
      uses: ammaraskar/msvc-problem-matcher@master

    - name: Build (with installer)
      if: needs.source.outputs.is_tag == 'true' && matrix.arch != 'arm64'
      uses: lukka/run-cmake@v3
      with:
        cmakeListsOrSettingsJson: CMakeListsTxtAdvanced
        useVcpkgToolchainFile: true
        buildDirectory: '${{ github.workspace }}/build'
        cmakeBuildType: RelWithDebInfo
        cmakeAppendedArgs: ' -GNinja -DOPTION_USE_NSIS=ON -DHOST_BINARY_DIR=${{ github.workspace }}/build-host'

    - name: Build (without installer)
      if: needs.source.outputs.is_tag != 'true' || matrix.arch == 'arm64'
      uses: lukka/run-cmake@v3
      with:
        cmakeListsOrSettingsJson: CMakeListsTxtAdvanced
        useVcpkgToolchainFile: true
        buildDirectory: '${{ github.workspace }}/build'
        cmakeBuildType: RelWithDebInfo
        cmakeAppendedArgs: ' -GNinja -DHOST_BINARY_DIR=${{ github.workspace }}/build-host'

    - name: Create bundles
      shell: bash
      run: |
        cd ${GITHUB_WORKSPACE}/build
        echo "::group::Run CPack"
        cpack
        echo "::endgroup::"

        echo "::group::Prepare PDB to be bundled"
        PDB=$(ls bundles/*.zip | cut -d/ -f2 | sed 's/.zip$/.pdb/')
        cp openttd.pdb bundles/${PDB}
        xz -9 bundles/${PDB}
        echo "::endgroup::"

        echo "::group::Cleanup"
        # Remove the sha256 files CPack generates; we will do this ourself at
        # the end of this workflow.
        rm -f bundles/*.sha256
        echo "::endgroup::"

    - name: Store bundles
      uses: actions/upload-artifact@v2
      with:
        name: openttd-windows-${{ matrix.arch }}
        path: build/bundles
        retention-days: 5

  upload:
    name: Upload
    needs:
    - source
    - docs
    - linux
    - macos
    - windows

    # The 'linux' job can be skipped if it is a nightly. That normally causes
    # this job to be skipped too, unless we have this length boy :)
    # "always()" is important here, it is the keyword to use to stop skipping
    # this job if any dependency is skipped. It looks a bit silly, but it is
    # how GitHub Actions work ;)
    if: always() && needs.source.result == 'success' && needs.docs.result == 'success' && (needs.linux.result == 'success' || needs.linux.result == 'skipped') && needs.macos.result == 'success' && needs.windows.result == 'success'

    runs-on: ubuntu-20.04

    steps:
    - name: Download all bundles
      uses: actions/download-artifact@v2

    - name: Calculate checksums
      run: |
        echo "::group::Move bundles to a single folder"
        mkdir bundles
        mv openttd-*/* bundles/
        cd bundles
        echo "::group::Build"

        for i in $(ls openttd-*); do
          echo "::group::Calculating checksums for ${i}"
          openssl dgst -r -md5 -hex $i > $i.md5sum
          openssl dgst -r -sha1 -hex $i > $i.sha1sum
          openssl dgst -r -sha256 -hex $i > $i.sha256sum
          echo "::endgroup::"
        done

    - name: Upload bundles to AWS
      run: |
        aws s3 cp --recursive --only-show-errors bundles/ s3://${{ secrets.CDN_S3_BUCKET }}/${{ needs.source.outputs.folder }}/${{ needs.source.outputs.version }}/

        # We do not invalidate the CloudFront distribution here. The trigger
        # for "New OpenTTD release" first updated the manifest files and
        # creates an index.html. We invalidate after that, so everything
        # becomes visible at once.
      env:
        AWS_ACCESS_KEY_ID: ${{ secrets.AWS_ACCESS_KEY_ID }}
        AWS_SECRET_ACCESS_KEY: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
        AWS_REGION: ${{ secrets.AWS_REGION }}

    - name: Trigger 'New OpenTTD release'
      uses: peter-evans/repository-dispatch@v1
      with:
        token: ${{ secrets.DEPLOYMENT_TOKEN }}
        repository: OpenTTD/workflows
        event-type: ${{ needs.source.outputs.trigger_type }}
        client-payload: '{"version": "${{ needs.source.outputs.version }}", "folder": "${{ needs.source.outputs.folder }}"}'