name: 🐧 Linux Builds
on: [push, pull_request]

# Global Settings
env:
  # Only used for the cache key. Increment version to force clean build.
  GODOT_BASE_BRANCH: master-v2
  SCONSFLAGS: verbose=yes warnings=extra werror=yes module_text_server_fb_enabled=yes

concurrency:
  group: ci-${{github.actor}}-${{github.head_ref || github.run_number}}-${{github.ref}}-linux
  cancel-in-progress: true

jobs:
  build-linux:
    runs-on: "ubuntu-20.04"
    name: ${{ matrix.name }}
    strategy:
      fail-fast: false
      matrix:
        include:
          - name: Editor w/ Mono (target=release_debug, tools=yes, tests=yes)
            cache-name: linux-editor-mono
            target: release_debug
            tools: true
            tests: false # Disabled due freeze caused by mix Mono build and CI
            sconsflags: module_mono_enabled=yes mono_static=yes mono_glue=no
            doc-test: true
            bin: "./bin/godot.linuxbsd.opt.tools.64.mono"
            build-mono: true
            artifact: true

          - name: Editor with doubles and GCC sanitizers (target=debug, tools=yes, float=64, tests=yes, use_asan=yes, use_ubsan=yes)
            cache-name: linux-editor-double-sanitizers
            target: debug
            tools: true
            tests: true
            sconsflags: float=64 use_asan=yes use_ubsan=yes
            proj-test: true
            # Can be turned off for PRs that intentionally break compat with godot-cpp,
            # until both the upstream PR and the matching godot-cpp changes are merged.
            godot-cpp-test: true
            bin: "./bin/godot.linuxbsd.double.tools.64.san"
            build-mono: false
            # Skip 2GiB artifact speeding up action.
            artifact: false

          - name: Editor with clang sanitizers (target=debug, tools=yes, use_asan=yes, use_ubsan=yes, use_llvm=yes)
            cache-name: linux-editor-llvm-sanitizers
            target: debug
            tools: true
            tests: true
            sconsflags: use_asan=yes use_ubsan=yes use_llvm=yes
            bin: "./bin/godot.linuxbsd.tools.64.llvm.san"
            build-mono: false
            # Skip 2GiB artifact speeding up action.
            artifact: false

          - name: Template w/ Mono (target=release, tools=no)
            cache-name: linux-template-mono
            target: release
            tools: false
            tests: false
            sconsflags: module_mono_enabled=yes mono_static=yes mono_glue=no debug_symbols=no
            build-mono: false
            artifact: true

          - name: Minimal Template (target=release, tools=no, everything disabled)
            cache-name: linux-template-minimal
            target: release
            tools: false
            tests: false
            sconsflags: modules_enabled_by_default=no disable_3d=yes disable_advanced_gui=yes deprecated=no minizip=no
            artifact: true

    steps:
      - uses: actions/checkout@v2

      - name: Linux dependencies
        shell: bash
        run: |
          # Azure repositories are not reliable, we need to prevent azure giving us packages.
          sudo rm -f /etc/apt/sources.list.d/*
          sudo cp -f misc/ci/sources.list /etc/apt/sources.list
          sudo apt-get update
          # The actual dependencies
          sudo apt-get install build-essential pkg-config libx11-dev libxcursor-dev \
              libxinerama-dev libgl1-mesa-dev libglu-dev libasound2-dev libpulse-dev \
              libdbus-1-dev libudev-dev libxi-dev libxrandr-dev yasm xvfb wget unzip \
              llvm

      - name: Setup Godot build cache
        uses: ./.github/actions/godot-cache
        with:
          cache-name: ${{ matrix.cache-name }}
        continue-on-error: true

      - name: Setup python and scons
        uses: ./.github/actions/godot-deps

      - name: Compilation
        uses: ./.github/actions/godot-build
        with:
          sconsflags: ${{ env.SCONSFLAGS }} ${{ matrix.sconsflags }}
          platform: linuxbsd
          target: ${{ matrix.target }}
          tools: ${{ matrix.tools }}
          tests: ${{ matrix.tests }}

      - name: Generate Mono glue
        if: ${{ matrix.build-mono }}
        run: |
          ${{ matrix.bin }} --headless --generate-mono-glue modules/mono/glue || true

      # Rebuild with mono
      - name: Compilation (mono_glue=yes)
        uses: ./.github/actions/godot-build
        if: ${{ matrix.build-mono }}
        with:
          sconsflags: ${{ env.SCONSFLAGS }} ${{ matrix.sconsflags }} mono_glue=yes
          platform: linuxbsd
          target: ${{ matrix.target }}
          tools: ${{ matrix.tools }}

      # Execute unit tests for the editor
      - name: Unit tests
        if: ${{ matrix.tests }}
        run: |
          ${{ matrix.bin }} --test --headless

      # Check class reference
      - name: Check for class reference updates
        if: ${{ matrix.doc-test }}
        run: |
          echo "Running --doctool to see if this changes the public API without updating the documentation."
          echo -e "If a diff is shown, it means that your code/doc changes are incomplete and you should update the class reference with --doctool.\n\n"
          ${{ matrix.bin }} --doctool --headless 2>&1 > /dev/null || true
          git diff --color --exit-code && ! git ls-files --others --exclude-standard | sed -e 's/^/New doc file missing in PR: /' | grep 'xml$'

      # Download, unzip and setup SwiftShader library
      # See https://github.com/godotengine/regression-test-project/releases/tag/_ci-deps for details
      - name: Download SwiftShader
        if: ${{ matrix.tests }}
        run: |
          wget https://github.com/godotengine/regression-test-project/releases/download/_ci-deps/swiftshader-ubuntu20.04-20211002.zip
          unzip swiftshader-ubuntu20.04-20211002.zip
          curr="$(pwd)/libvk_swiftshader.so"
          sed -i "s|PATH_TO_CHANGE|$curr|" vk_swiftshader_icd.json

      # Download and extract zip archive with project, folder is renamed to be able to easy change used project
      - name: Download test project
        if: ${{ matrix.proj-test }}
        run: |
          wget https://github.com/godotengine/regression-test-project/archive/4.0.zip
          unzip 4.0.zip
          mv "regression-test-project-4.0" "test_project"

      # Editor is quite complicated piece of software, so it is easy to introduce bug here
      - name: Open and close editor
        if: ${{ matrix.proj-test }}
        run: |
          VK_ICD_FILENAMES=$(pwd)/vk_swiftshader_icd.json DRI_PRIME=0 xvfb-run ${{ matrix.bin }} --audio-driver Dummy --editor --quit --path test_project 2>&1 | tee sanitizers_log.txt || true
          misc/scripts/check_ci_log.py sanitizers_log.txt

      # Run test project
      - name: Run project
        if: ${{ matrix.proj-test }}
        run: |
          VK_ICD_FILENAMES=$(pwd)/vk_swiftshader_icd.json DRI_PRIME=0 xvfb-run ${{ matrix.bin }} 40 --audio-driver Dummy --path test_project 2>&1 | tee sanitizers_log.txt || true
          misc/scripts/check_ci_log.py sanitizers_log.txt

      # Checkout godot-cpp
      - name: Checkout godot-cpp
        if: ${{ matrix.godot-cpp-test }}
        uses: actions/checkout@v2
        with:
          repository: godotengine/godot-cpp
          submodules: 'recursive'
          path: 'godot-cpp'

      # Check extension API
      - name: Check for extension api updates
        if: ${{ matrix.godot-cpp-test }}
        run: |
          echo "Running --dump-extension-api to create extensions api."
          VK_ICD_FILENAMES=$(pwd)/vk_swiftshader_icd.json DRI_PRIME=0 xvfb-run ${{ matrix.bin }} --audio-driver Dummy --dump-extension-api 2>&1 > /dev/null || true
          misc/scripts/compare_extension_api.py godot-cpp/godot-headers/extension_api.json extension_api.json

      # Copy new extension API files into place
      - name: Copy new extension API files into place
        if: ${{ matrix.godot-cpp-test }}
        run: |
          cp -f extension_api.json godot-cpp/godot-headers/
          cp -f core/extension/gdnative_interface.h godot-cpp/godot-headers/godot/

      # Build godot-cpp test extension
      - name: Build godot-cpp test extension
        if: ${{ matrix.godot-cpp-test }}
        run: |
          cd godot-cpp/test
          scons target=${{ matrix.target }} -j2
          cd ../..

      - name: Prepare artifact
        if: ${{ matrix.artifact }}
        run: |
          strip bin/godot.*

      - name: Upload artifact
        uses: ./.github/actions/upload-artifact
        if: ${{ matrix.artifact }}
        with:
          name: ${{ matrix.cache-name }}