version: "3"

vars:
  DEFAULT_BUILD_ARGS: --all-features --workspace
  RELEASE_BUILD_ARGS: --all-features --workspace --release

tasks:
  build:
    desc: Cross-compile diff-engine binaries for all target platforms
    vars:
      BUILD_ARGS: "{{default .DEFAULT_BUILD_ARGS .BUILD_ARGS}}"
    deps:
      - add-targets
    cmds:
      - task: build-macos
        vars:
          BUILD_ARGS: "{{.BUILD_ARGS}}"
      - task: build-windows
        vars:
          BUILD_ARGS: "{{.BUILD_ARGS}}"
      - task: build-linux
        vars:
          BUILD_ARGS: "{{.BUILD_ARGS}}"

  build-macos:
    desc: Build diff-engine binaries for Mac OS
    vars:
      BUILD_ARGS: "{{default .DEFAULT_BUILD_ARGS .BUILD_ARGS}}"
    deps:
      - task: build-macos-x86-64
        vars:
          BUILD_ARGS: "{{.BUILD_ARGS}}"
      - task: build-macos-aarch64
        vars:
          BUILD_ARGS: "{{.BUILD_ARGS}}"

  build-macos-x86-64:
    desc: Build diff-engine binaries for Mac OS x86-64
    vars:
      BUILD_ARGS: "{{default .DEFAULT_BUILD_ARGS .BUILD_ARGS}}"
    cmds:
      - cargo build {{.BUILD_ARGS}} --target x86_64-apple-darwin

  build-macos-aarch64:
    desc: Build diff-engine binaries for Mac OS aarch64
    vars:
      BUILD_ARGS: "{{default .DEFAULT_BUILD_ARGS .BUILD_ARGS}}"
    cmds:
      - cargo build {{.BUILD_ARGS}} --target aarch64-apple-darwin

  build-linux:
    desc: Build diff-engine binaries for Linux
    vars:
      BUILD_ARGS: "{{default .DEFAULT_BUILD_ARGS .BUILD_ARGS}}"
    deps:
      - build-linux:macos-host-deps
    cmds:
      - |
        if uname -a | grep -q Darwin
        then
          CARGO_TARGET_X86_64_UNKNOWN_LINUX_MUSL_LINKER=x86_64-linux-musl-gcc \
            cargo build {{.BUILD_ARGS}} --target x86_64-unknown-linux-musl
        else
          cargo build {{.BUILD_ARGS}} --target x86_64-unknown-linux-musl
        fi

  build-windows:
    desc: Build diff-engine binaries for Windows
    vars:
      BUILD_ARGS: "{{default .DEFAULT_BUILD_ARGS .BUILD_ARGS}}"
    deps:
      - build-windows:macos-host-deps
      - build-windows:debian-host-deps
    cmds:
      - cargo build {{.BUILD_ARGS}} --target x86_64-pc-windows-gnu

  test:
    - cargo test

  add-targets:
    cmds:
      - rustup target add aarch64-apple-darwin
      - rustup target add x86_64-apple-darwin
      - rustup target add x86_64-unknown-linux-gnu  # glibc
      - rustup target add x86_64-unknown-linux-musl # musl libc
      - rustup target add x86_64-pc-windows-gnu

  # Mac OS build host toolchain deps
  build-windows:macos-host-deps:
    desc: Install a Windows build toolchain on Mac OS hosts
    cmds:
      - brew install mingw-w64
    status:
      - uname -a | grep -qv "Darwin"

  # Debian build host toolchain deps
  build-windows:debian-host-deps:
    cmds:
      - sudo apt-get -y install gcc-mingw-w64
    status:
      - uname -a | grep -qv "GNU/Linux"
      - |
        if [ -f /etc/os-release ]
        then
          cat /etc/os-release | grep -qv "ID_LIKE=debian"
        fi

  build-linux:macos-host-deps:
    desc: Install a Windows build toolchain on Mac OS hosts
    cmds:
      # - xcode-select --install
      - brew tap SergioBenitez/osxct
      - brew install x86_64-unknown-linux-gnu
      - brew install filosottile/musl-cross/musl-cross
    status:
      - uname -a | grep -qv "Darwin"

  locate-binaries:
    cmds:
      - |
        if uname -a | grep -q Darwin
        then
          find ./target -type f -perm +111 -print | grep release/optic_diff
        else
          find ./target -executable -print -type f | grep release/optic_diff
        fi

  ci:build:
    desc: The CI build workflow
    cmds:
      - task: build
        vars:
          BUILD_ARGS: "{{.RELEASE_BUILD_ARGS}}"
      - task: :flush-to-disk
      - task: locate-binaries

  package-tarballs:
    summary: |
      Locates any previously built diff-engine binaries and creates a tgz archive
      for each in ./build/dist. The structure of the tarball is expected to be:

        tar tvf build/dist/optic_diff-v0.0.0-alpha.b00-macos.tar.gz
        drwxr-xr-x  0 nate   staff       0 Feb 23 15:14 optic_diff-v0.0.0-alpha.b00-macos/
        -rwxr-xr-x  0 nate   staff 12298919 Feb 23 15:14 optic_diff-v0.0.0-alpha.b00-macos/optic_diff
    vars:
      VERSION: '{{default "NO_VERSION" .VERSION}}'
    cmds:
      # kind of a hack job. but it mimics the existing tags we're appending to the binary tarballs
      # in the main release flow.
      - |
        for binary in $(task diff-engine:locate-binaries)
        do
          if [[ $binary =~ "x86_64-apple" ]]; then
            tag="macos"
          elif [[ $binary =~ "aarch64-apple" ]]; then
            tag="macos-aarch64"
          elif [[ $binary =~ "windows" ]]; then
            tag="win64"
          elif [[ $binary =~ "linux" ]]; then
            tag="linux"
          else
            echo "Could not identify the arch for file: $binary"
            exit 1
          fi

          filename="optic_diff-v{{.VERSION}}-$tag"
          chmod +x $binary
          mkdir -p build/$filename build/dist
          cp $binary build/$filename/
          tar -C build -czvf build/dist/${filename}.tar.gz $filename
        done
      - ls -lh build/dist